DA14681-01000U22 [DIALOG]
Bluetooth Low Energy 4.2 SoC;
| 型号： | DA14681-01000U22 |
| 厂家： | 
Dialog Semiconductor |
| 描述： | Bluetooth Low Energy 4.2 SoC 电信 电信集成电路 |
| 文件： | 总444页 (文件大小：5297K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
DA14681
FINAL
Bluetooth Low Energy 4.2 SoC
line batteries
General description
Charger (up to 5.0 V) with programmable curves
High accuracy state-of-charge fuel gauge
Programmable threshold for brownout detection
Digitally controlled oscillators and PLL
16 MHz crystal oscillator
The DA14681 is a flexible System-on-Chip combining
an application processor, memories, cryptography
engine, power management unit, digital and analog
peripherals and a Bluetooth Low Energy MAC engine
and radio transceiver.
The DA14681 is based on an ARM® Cortex®-M0 CPU
delivering up to 84 DMIPS and provides a flexible
memory architecture, enabling code execution from
embedded memory (RAM, ROM) or non-volatile mem-
ory (OTP or external Quad-SPI FLASH).
16 MHz RC oscillator
32 kHz crystal and RC oscillator
11.7 kHz RCX oscillator
Low power PLL up to 96 MHz
Three general purpose timer/counters with PWM
One 16-bit up/down timer/counter with PWM
available in extended/deep sleep mode
Application cryptographic engine with ECC, AES-
256, SHA-1, SHA-256, SHA-512 and True Random
Number Generator
The advanced power management unit of the
DA14681 enables it to run from primary and secondary
batteries, as well as provide power to external devices.
The on-chip charger and state-of-charge fuel gauge
allow the DA14681 to natively charge rechargeable
batteries over USB.
Digital interfaces
37 (AQFN) or 21 (WLCSP) general purpose I/Os
with programmable voltage levels
An on-chip PLL enables on-the-fly tuning of the system
clock between 32 kHz and 96 MHz to meet high pro-
cessing requirements. Several optimised sleep modes
are available to reduce power dissipation when there is
no activity.
Quad-SPI FLASH interface
Two UARTs, one with hardware flow control
Two SPI+™ interfaces
Two I2C bus interfaces at 100 kHz, 400 kHz
Three-axes capable Quadrature Decoder
PDM + HW decimator (2 mics or 2 speakers)
I2S/PCM master/slave interface up to 8 channels
Keyboard scanner with debouncing
Infrared (IR) interface (PWM)
Features
Complies to Bluetooth v4.2, ETSI EN 300 328 and
EN 300 440 Class 2 (Europe), FCC CFR47 Part 15
(US) and ARIB STD-T66 (Japan)
USB 1.1 Full Speed (FS) device interface
Analog interfaces
Flexible processing power
8-channel 10-bit ADC with averaging capability
Three matched white LED drivers
Temperature sensor
0 Hz up to 96 MHz 32-bit ARM Cortex-M0 with
4-way associative cache
Three optimised power modes (Extended sleep,
Deep sleep and Hibernation) reducing current to
1.4 uA
Radio transceiver
2.4 GHz CMOS transceiver with integrated balun
50 matched single wire antenna interface
0 dBm transmit output power
-94 dBm receiver sensitivity (BLE)
Supply current at VBAT1 (3 V):
Memories
64 kB One-Time-Programmable (OTP) memory
128 kB Data SRAM with retention capabilities
16 kB Cache SRAM with retention capabilities
128 kB ROM (including boot ROM and BLE stack)
Power management
TX: 3.4 mA
RX: 3.1 mA (with ideal DC-DC converter)
Packages:
Integrated Buck DC-DC converter (1.7 V - 4.75 V)
Three power supply pins for external devices
Supports Li-Polymer, Li-Ion, coin, NiMH and alka-
AQFN with 60 pins, 6 mm x 6 mm
WLCSP with 53 balls, 3.406 mm x 3.010 mm
________________________________________________________________________________________________
System diagram
Datasheet
Revision 3.1
24-Nov-2020
CFR0011-120-00-FM Rev 5
1 of 444
© 2018-2020 Dialog Semiconductor
DA14681
FINAL
Bluetooth Low Energy 4.2 SoC
1 Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
2 Package and pinout . . . . . . . . . . . . . . . . . . . . . . . . . 7
3 System overview . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
8.2 RUNTIME RECONFIGURATION . . . . . . . . . . 58
8.2.1 Cache Line reconfiguration . . . . . . . . . . 58
8.2.2 TAG memory word. . . . . . . . . . . . . . . . . 58
8.2.3 Associativity reconfiguration . . . . . . . . . 58
8.3 2 AND 4 WAY REPLACEMENT STRATEGY . 58
8.4 CACHE RESETS. . . . . . . . . . . . . . . . . . . . . . . 58
8.5 CACHE MISS RATE MONITOR . . . . . . . . . . . 59
8.6 CACHE MISS LATENCY AND POWER . . . . . 59
3.1 INTERNAL BLOCKS. . . . . . . . . . . . . . . . . . . . 19
3.2 FUNCTIONAL MODES . . . . . . . . . . . . . . . . . . 20
3.3 SYSTEM CONFIGURATION . . . . . . . . . . . . . 20
3.4 SYSTEM STARTUP PROCEDURE . . . . . . . . 23
3.4.1 Power/Wakeup FSM . . . . . . . . . . . . . . . 24
3.4.2 Goto Sleep FSM . . . . . . . . . . . . . . . . . . 24
3.4.3 BootROM sequence . . . . . . . . . . . . . . . 25
3.5 POWER CONTROL AND MODES . . . . . . . . . 27
3.5.1 System Power Control . . . . . . . . . . . . . . 27
3.5.2 Power domains . . . . . . . . . . . . . . . . . . . 28
3.5.3 Power modes. . . . . . . . . . . . . . . . . . . . . 29
9 AMBA Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 61
10 Memory Controller . . . . . . . . . . . . . . . . . . . . . . . . 63
11 OTP Controller. . . . . . . . . . . . . . . . . . . . . . . . . . . . 65
11.1 OPERATING MODES . . . . . . . . . . . . . . . . . . 65
11.2 AHB MASTER INTERFACE . . . . . . . . . . . . . 66
11.3 AHB SLAVE INTERFACES . . . . . . . . . . . . . . 66
11.4 ERROR CORRECTING CODE (ECC) . . . . . 66
11.5 BUILD-IN SELF REPAIR (BISR) . . . . . . . . . . 66
4 Power management . . . . . . . . . . . . . . . . . . . . . . . . 31
4.1 ARCHITECTURE . . . . . . . . . . . . . . . . . . . . . . 31
4.1.1 SIMO DC-DC converter . . . . . . . . . . . . . 32
4.1.2 LDOs . . . . . . . . . . . . . . . . . . . . . . . . . . . 34
4.1.3 Switching from DC-DC to LDOs . . . . . . 36
4.1.4 PMU configurations in Sleep modes . . . 37
4.1.5 Wake/Power up - Sleep Timing . . . . . . . 37
4.1.6 Charger . . . . . . . . . . . . . . . . . . . . . . . . . 40
4.1.7 Fuel gauge. . . . . . . . . . . . . . . . . . . . . . . 42
4.1.8 USB charger detection. . . . . . . . . . . . . . 44
12 Quad SPI Controller . . . . . . . . . . . . . . . . . . . . . . . 67
12.1 ARCHITECTURE . . . . . . . . . . . . . . . . . . . . . 67
12.1.1 Interface. . . . . . . . . . . . . . . . . . . . . . . . 67
12.1.2 Initialization FSM . . . . . . . . . . . . . . . . . 68
12.1.3 SPI modes . . . . . . . . . . . . . . . . . . . . . . 69
12.1.4 Access modes . . . . . . . . . . . . . . . . . . . 69
12.1.5 Endianess . . . . . . . . . . . . . . . . . . . . . . 69
12.1.6 Erase Suspend/Resume . . . . . . . . . . . 69
12.1.7 QSPI FLASH Programming . . . . . . . . . 70
12.2 PROGRAMMING . . . . . . . . . . . . . . . . . . . . . 70
12.2.1 Auto Mode . . . . . . . . . . . . . . . . . . . . . . 70
12.2.2 Manual Mode . . . . . . . . . . . . . . . . . . . . 71
12.2.3 Clock selection. . . . . . . . . . . . . . . . . . . 71
12.2.4 Received data . . . . . . . . . . . . . . . . . . . 71
12.3 TIMING . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71
5 Reset. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 47
5.1 POR, HW AND SW RESET . . . . . . . . . . . . . . 47
5.2 BROWN OUT DETECTION . . . . . . . . . . . . . . 48
6 Clock generation . . . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.1 CLOCK TREE . . . . . . . . . . . . . . . . . . . . . . . . . 49
6.2 CRYSTAL OSCILLATORS . . . . . . . . . . . . . . . 50
6.2.1 Frequency control (16 MHz crystal). . . . 50
6.2.2 Automated trimming and settling notification
50
13 DMA Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . 73
13.1 DMA PERIPHERALS . . . . . . . . . . . . . . . . . . 74
13.2 INPUT/OUTPUT MULTIPLEXER . . . . . . . . . 74
13.3 DMA CHANNEL OPERATION . . . . . . . . . . . 74
13.4 DMA ARBITRATION . . . . . . . . . . . . . . . . . . . 75
13.5 FREEZING DMA CHANNELS. . . . . . . . . . . . 75
6.3 RC OSCILLATORS. . . . . . . . . . . . . . . . . . . . . 51
6.3.1 Frequency calibration . . . . . . . . . . . . . . 52
6.4 PLL . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
7 ARM Cortex M0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 53
14 AES/Hash Engine . . . . . . . . . . . . . . . . . . . . . . . . . 76
7.1 SYSTEM TIMER (SYSTICK). . . . . . . . . . . . . . 54
7.2 WAKEUP INTERRUPT CONTROLLER . . . . . 54
7.3 REFERENCE . . . . . . . . . . . . . . . . . . . . . . . . . 54
7.4 INTERRUPTS . . . . . . . . . . . . . . . . . . . . . . . . . 55
14.1 DESCRIPTION . . . . . . . . . . . . . . . . . . . . . . . 76
14.2 ARCHITECTURE . . . . . . . . . . . . . . . . . . . . . 77
14.2.1 AES/HASH engine. . . . . . . . . . . . . . . . 77
14.2.2 AES . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
14.2.3 Modes . . . . . . . . . . . . . . . . . . . . . . . . . 78
14.2.4 HASH. . . . . . . . . . . . . . . . . . . . . . . . . . 78
8 Cache Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . 57
8.1 CACHABLE RANGE . . . . . . . . . . . . . . . . . . . . 57
Datasheet
Revision 3.1
24-Nov-2020
CFR0011-120-00-FM Rev 5
2 of 444
© 2018-2020 Dialog Semiconductor
DA14681
FINAL
Bluetooth Low Energy 4.2 SoC
14.3 PROGRAMMING . . . . . . . . . . . . . . . . . . . . . 79
22.1.1 Interface Signals. . . . . . . . . . . . . . . . . . 98
22.1.2 Channel ACCESS . . . . . . . . . . . . . . . . 98
22.1.3 Channel delay . . . . . . . . . . . . . . . . . . . 99
22.1.4 Clock generation . . . . . . . . . . . . . . . . . 99
22.1.5 DATA FORMATS . . . . . . . . . . . . . . . . 100
22.1.6 IOM mode . . . . . . . . . . . . . . . . . . . . . 101
22.1.7 External synchronisation . . . . . . . . . . 101
15 ECC Engine . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 82
15.1 ARCHITECTURE . . . . . . . . . . . . . . . . . . . . . 82
15.1.1 Supported curves. . . . . . . . . . . . . . . . . 83
15.1.2 Supported high level algorithms . . . . . 83
15.2 PROGRAMMING . . . . . . . . . . . . . . . . . . . . . 83
15.2.1 Example: ECDSA signature generation 83
23 UART . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 103
16 True Random Number Generator (TRNG). . . . . . 86
23.1 UART (RS232) SERIAL PROTOCOL . . . . . 104
23.2 IRDA 1.0 SIR PROTOCOL . . . . . . . . . . . . . 105
23.3 CLOCK SUPPORT . . . . . . . . . . . . . . . . . . . 105
23.4 INTERRUPTS . . . . . . . . . . . . . . . . . . . . . . . 106
23.5 PROGRAMMABLE THRE INTERRUPT . . . 106
23.6 SHADOW REGISTERS . . . . . . . . . . . . . . . 108
23.7 DIRECT TEST MODE . . . . . . . . . . . . . . . . . 108
16.1 ARCHITECTURE . . . . . . . . . . . . . . . . . . . . . 86
16.2 PROGRAMMING . . . . . . . . . . . . . . . . . . . . . 86
16.2.1 Latency . . . . . . . . . . . . . . . . . . . . . . . . 86
17 Temperature Sensor . . . . . . . . . . . . . . . . . . . . . . . 87
17.1 PROGRAMMING . . . . . . . . . . . . . . . . . . . . . 87
18 Wakeup Timer . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
19 General purpose ADC. . . . . . . . . . . . . . . . . . . . . . 89
24 SPI+ Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 109
24.1 OPERATION WITHOUT FIFOS . . . . . . . . . 109
24.2 9 BITS MODE . . . . . . . . . . . . . . . . . . . . . . . .110
19.1 ARCHITECTURE . . . . . . . . . . . . . . . . . . . . . 89
19.2 INPUT CHANNELS AND INPUT SCALE . . . 91
19.3 STARTING THE ADC . . . . . . . . . . . . . . . . . . 91
19.4 ADC CONVERSION MODES . . . . . . . . . . . . 91
19.4.1 Manual Mode. . . . . . . . . . . . . . . . . . . . 91
19.4.2 Continuous Mode. . . . . . . . . . . . . . . . . 91
19.5 NON-IDEAL EFFECTS . . . . . . . . . . . . . . . . . 91
19.6 SAMPLING TIME (SMPL_TIME). . . . . . . . . . 92
19.7 OVERSAMPLING . . . . . . . . . . . . . . . . . . . . . 92
19.8 CHOPPING . . . . . . . . . . . . . . . . . . . . . . . . . . 93
19.9 OFFSET CALIBRATION . . . . . . . . . . . . . . . . 93
19.10 ZERO-SCALE ADJUSTMENT . . . . . . . . . . 93
19.11 COMMON MODE ADJUSTMENT. . . . . . . . 93
19.12 INPUT IMPEDANCE, INDUCTANCE AND IN-
PUT SETTLING. . . . . . . . . . . . . . . . . . . . . . . . 94
25 I2C. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 113
25.1 I2C BUS TERMS . . . . . . . . . . . . . . . . . . . . . .113
25.1.1 Bus Transfer Terms . . . . . . . . . . . . . . .114
25.2 I2C BEHAVIOUR. . . . . . . . . . . . . . . . . . . . . .114
25.2.1 START and STOP Generation. . . . . . .115
25.2.2 Combined Formats . . . . . . . . . . . . . . .115
25.3 I2C PROTOCOLS . . . . . . . . . . . . . . . . . . . . .115
25.3.1 START and STOP Conditions . . . . . . .115
25.3.2 Addressing Slave Protocol. . . . . . . . . .115
25.3.3 Transmitting and Receiving Protocol . .116
25.4 MULTIPLE MASTER ARBITRATION . . . . . .118
25.5 CLOCK SYNCHRONIZATION . . . . . . . . . . .119
25.6 OPERATION MODES . . . . . . . . . . . . . . . . . 120
25.6.1 Slave Mode Operation . . . . . . . . . . . . 120
25.6.2 Master Mode Operation . . . . . . . . . . . 122
25.6.3 Disabling I2C controller . . . . . . . . . . . 122
20 Sample rate Converter (SRC). . . . . . . . . . . . . . . . 95
20.1 ARCHITECTURE . . . . . . . . . . . . . . . . . . . . . 95
20.1.1 I/O channels. . . . . . . . . . . . . . . . . . . . . 95
20.1.2 I/O multiplexers . . . . . . . . . . . . . . . . . . 95
20.1.3 Input and Output Sample rate conversion
96
26 InfraRed Generator . . . . . . . . . . . . . . . . . . . . . . . 123
26.1 ARCHITECTURE . . . . . . . . . . . . . . . . . . . . 123
26.2 PROGRAMMING . . . . . . . . . . . . . . . . . . . . 124
20.1.4 SRC conversion modes of operation . . 96
20.1.5 DMA operation. . . . . . . . . . . . . . . . . . . 96
20.1.6 Interrupts . . . . . . . . . . . . . . . . . . . . . . . 96
20.1.7 SRC use cases . . . . . . . . . . . . . . . . . . 96
27 Quadrature Decoder . . . . . . . . . . . . . . . . . . . . . . 125
27.1 ARCHITECTURE . . . . . . . . . . . . . . . . . . . . 125
27.2 PROGRAMMING . . . . . . . . . . . . . . . . . . . . 125
28 Keyboard Scanner. . . . . . . . . . . . . . . . . . . . . . . . 126
21 PDM interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . 97
28.1 ARCHITECTURE . . . . . . . . . . . . . . . . . . . . 126
28.2 PROGRAMMING . . . . . . . . . . . . . . . . . . . . 128
22 PCM Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . 98
22.1 ARCHITECTURE . . . . . . . . . . . . . . . . . . . . . 98
Datasheet
Revision 3.1
24-Nov-2020
CFR0011-120-00-FM Rev 5
3 of 444
© 2018-2020 Dialog Semiconductor
DA14681
FINAL
Bluetooth Low Energy 4.2 SoC
29 Software Timers . . . . . . . . . . . . . . . . . . . . . . . . . 129
33.3 DIAGNOSTIC SIGNALS . . . . . . . . . . . . . . . 156
33.4 POWER PROFILE . . . . . . . . . . . . . . . . . . . 157
33.4.1 Advertising Event. . . . . . . . . . . . . . . . 157
33.4.2 Connection Event . . . . . . . . . . . . . . . 158
29.1 TIMER0 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 129
29.2 TIMER1 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 131
29.3 TIMER2 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 132
29.4 BRTH_TIMER . . . . . . . . . . . . . . . . . . . . . . . 134
34 CoEx interface . . . . . . . . . . . . . . . . . . . . . . . . . . . 159
30 Watchdog Timer . . . . . . . . . . . . . . . . . . . . . . . . . 135
31 USB Interface. . . . . . . . . . . . . . . . . . . . . . . . . . . . 136
34.1 ARCHITECTURE . . . . . . . . . . . . . . . . . . . . 159
34.2 PROGRAMMING . . . . . . . . . . . . . . . . . . . . 159
35 Radio . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 161
31.1 SERIAL INTERFACE ENGINE . . . . . . . . . . 137
31.2 ENDPOINT PIPE CONTROLLER (EPC) . . 137
31.3 FUNCTIONAL STATES. . . . . . . . . . . . . . . . 138
31.3.1 Line Condition Detection . . . . . . . . . . 138
31.4 FUNCTIONAL STATE DIAGRAM . . . . . . . . 139
31.5 ADDRESS DETECTION . . . . . . . . . . . . . . . 141
31.6 TRANSMIT AND RECEIVE ENDPOINT FIFOS
142
35.1 ARCHITECTURE . . . . . . . . . . . . . . . . . . . . 161
35.1.1 Receiver. . . . . . . . . . . . . . . . . . . . . . . 161
35.1.2 Synthesizer . . . . . . . . . . . . . . . . . . . . 161
35.1.3 Transmitter. . . . . . . . . . . . . . . . . . . . . 162
35.1.4 RFIO . . . . . . . . . . . . . . . . . . . . . . . . . 162
35.1.5 Biassing . . . . . . . . . . . . . . . . . . . . . . . 162
35.1.6 Control . . . . . . . . . . . . . . . . . . . . . . . . 162
35.2 DYNAMIC CONTROLLED FUNCTIONS . . 162
35.3 DIAGNOSTIC SIGNALS . . . . . . . . . . . . . . . 162
31.7 BIDIRECTIONAL CONTROL ENDPOINT FIFO0
143
31.8 TRANSMIT ENDPOINT FIFO (TXFIFO1 TO
TXFIFO5) . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
31.9 RECEIVE ENDPOINT FIFO (RXFIFO2 TO
RXFIFO6 . . . . . . . . . . . . . . . . . . . . . . . . . . . . 145
31.10 INTERRUPT HIERARCHY . . . . . . . . . . . . 146
31.11 USB POWER SAVING MODES . . . . . . . . 148
31.11.1 Freezing USB node . . . . . . . . . . . . . 148
31.11.2 Integrated resistors . . . . . . . . . . . . . 148
36 Memory map . . . . . . . . . . . . . . . . . . . . . . . . . . . . 164
37 Registers . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166
37.1 OTPC REGISTER FILE . . . . . . . . . . . . . . . 168
37.2 QSPIC REGISTER FILE . . . . . . . . . . . . . . . 175
37.3 BLE REGISTER FILE . . . . . . . . . . . . . . . . . 186
37.4 AES_HASH REGISTER FILE . . . . . . . . . . . 205
37.5 CACHE REGISTER FILE . . . . . . . . . . . . . . 209
37.6 CRG REGISTER FILE . . . . . . . . . . . . . . . . 213
37.7 DCDC REGISTER FILE . . . . . . . . . . . . . . . 223
37.8 WAKEUP REGISTER FILE. . . . . . . . . . . . . 233
37.9 TIMER1 REGISTER FILE . . . . . . . . . . . . . . 236
37.10 UART REGISTER FILE. . . . . . . . . . . . . . . 239
37.11 SPI REGISTER FILE. . . . . . . . . . . . . . . . . 277
37.12 I2C REGISTER FILE. . . . . . . . . . . . . . . . . 282
37.13 KEYBOARD SCAN REGISTER FILE . . . . 316
37.14 IR REGISTER FILE. . . . . . . . . . . . . . . . . . 324
37.15 USB REGISTER FILE. . . . . . . . . . . . . . . . 327
37.16 GPADC REGISTER FILE . . . . . . . . . . . . . 359
37.17 QUADRATURE DECODER REGISTER FILE.
362
32 Input/Output ports. . . . . . . . . . . . . . . . . . . . . . . . 149
32.1 PROGRAMMABLE PIN ASSIGNMENT . . . 149
32.2 GENERAL PURPOSE PORT REGISTERS 149
32.2.1 Port Data Register . . . . . . . . . . . . . . . 149
32.2.2 Port Set Data Output Register . . . . . . 150
32.2.3 Port Reset Data Output Register . . . . 150
32.3 FIXED ASSIGNMENT FUNCTIONALITY . . 150
32.4 STATE RETENTION WHILE SLEEPING . . 150
32.5 SPECIAL I/O CONSIDERATIONS . . . . . . . 151
33 BLE Core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 152
33.1 ARCHITECTURE . . . . . . . . . . . . . . . . . . . . 152
33.1.1 Exchange Memory. . . . . . . . . . . . . . . 152
33.2 PROGRAMMING . . . . . . . . . . . . . . . . . . . . 152
33.2.1 Wake up IRQ . . . . . . . . . . . . . . . . . . . 152
33.2.2 Switch from Active Mode to Deep Sleep
Mode . . . . . . . . . . . . . . . . . . . . . . . . . 153
37.18 ANAMISC REGISTER FILE . . . . . . . . . . . 363
37.19 CRG REGISTER FILE . . . . . . . . . . . . . . . 371
37.20 COEX REGISTER FILE . . . . . . . . . . . . . . 373
37.21 GPIO REGISTER FILE . . . . . . . . . . . . . . . 381
37.22 WDOG REGISTER FILE. . . . . . . . . . . . . . 398
37.23 VERSION REGISTER FILE . . . . . . . . . . . 399
37.24 GPREG REGISTER FILE . . . . . . . . . . . . . 400
37.25 TIMER0/2 AND BREATH REGISTER FILE 404
33.2.3 Switch from Deep Sleep Mode to Active
Mode . . . . . . . . . . . . . . . . . . . . . . . . . 153
33.2.4 Switching on at anchor points.. . . . . . 153
33.2.5 Switching on due to an external event.155
Datasheet
Revision 3.1
24-Nov-2020
CFR0011-120-00-FM Rev 5
4 of 444
© 2018-2020 Dialog Semiconductor
DA14681
FINAL
Bluetooth Low Energy 4.2 SoC
37.26 DMA REGISTER FILE . . . . . . . . . . . . . . . 407
37.27 APU REGISTER FILE. . . . . . . . . . . . . . . . 427
37.28 TRNG REGISTER FILE . . . . . . . . . . . . . . 433
37.29 ELLIPTIC CURVE CONTROLLER REGISTER
FILE. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 434
38 Specifications . . . . . . . . . . . . . . . . . . . . . . . . . . . 438
39 Package information. . . . . . . . . . . . . . . . . . . . . . 456
39.1 MOISTURE SENSITIVITY LEVEL (MSL) . . 456
39.2 WLCSP HANDLING . . . . . . . . . . . . . . . . . . 456
39.3 SOLDERING INFORMATION. . . . . . . . . . . 456
39.4 PACKAGE OUTLINES . . . . . . . . . . . . . . . . 457
Datasheet
Revision 3.1
24-Nov-2020
CFR0011-120-00-FM Rev 5
5 of 444
© 2018-2020 Dialog Semiconductor
DA14681
FINAL
Bluetooth Low Energy 4.2 SoC
1
Block diagram
Instruction Cache
RAM 16 kB
ARM Cortex-M0
LDO
IO
DCDC
(BUCK)
FUEL
GAUGE
CHARGER
(5V)
XTAL
32.768
kHz
LP PLL
96 MHz
XTAL
16MHz
4-WAY ASSOCIATIVE
CACHE CONTROLLER
LDO
VBAT
LDO
USB
LDO
CORE
LDO
SLEEP
LDO
RADIO
CORE
SWD
BROWNOUT &
POWER-ON RESET
QSPI FLASH
CONTROLLER
BLE Radio Transceiver
2.4 GHz
Bluetooth Low Energy 4.2 MAC
Data/Exchange RAM
128 kB
COEX
OTP
64 kB
BLE 4.2 ROM
118 kB
Analog
Audio/Voice
Comm
HID
Timers
BootROM
10 kB
IR
TIMER0/PWM
TEMPERATURE
SENSOR
UART / UART2
SRC
GENERATOR
TIMER1/PWM
TIMER2/PWM
8-CH DMA
AES256/HASH
ECC CRYPTO
TRNG
QUAD DEC
(x3)
WAKE
UP
WLED
(x3)
SPI / SPI2
I2C / I2C2
PDM
8-CH 10-BIT
ADC
WATCHDOG
TIMER
KEYBOARD
SCANNER
PCM/I2S
USB 1.1
PHY
GPIO MULTIPLEXING
Figure 1: DA14681 block diagram
Datasheet
Revision 3.1
24-Nov-2020
CFR0011-120-00-FM Rev 5
6 of 444
© 2018-2020 Dialog Semiconductor
DA14681
FINAL
Bluetooth Low Energy 4.2 SoC
2
Package and pinout
The DA14681 comes in a 6 mm x 6 mm aQFN package with 60 pins and a WLCSP package with 53 balls. Pins P3x,
P4x, LED2 and LED3 are not available in the WLCSP package. The pin/ball assignment is shown in the following fig-
ures.
A1
A2
A37
A35 A34 A33
A32
B18
A31
B17
B16
B15
A30
A29
A28
A36
B23
B21 B20 B19
B22
A3
A4
A5
A6
A7
A8
B1
B2
A27
A26
A25
A24
DA14681
(Top View)
B14
B13
B3
B4
A23
GND
A9
B12
B11
A19
A22
A21
A20
B7
B8
B9
B10
A18
B6
A10
B5
A11
A12
A13 A14 A15 A16
A17
Figure 2: AQFN60 pin assignment
Datasheet
Revision 3.1
24-Nov-2020
CFR0011-120-00-FM Rev 5
7 of 444
© 2018-2020 Dialog Semiconductor
DA14681
FINAL
Bluetooth Low Energy 4.2 SoC
8
1
2
3
4
5
6
7
A
B
C
D
E
DA14681
F
G
Figure 3: WLCSP53 ball assignment
Table 1: Ordering information
Part number
Package
Size (mm)
Shipment form
Pack quantity
DA14681-01000U22
WLCSP53
3.406 x 3.010
Reel
100/1000 (samples)
5000 (production)
DA14681-01000A92
AQFN60
6 x 6
Reel
100/1000 (samples)
4000 (production)
Datasheet
Revision 3.1
24-Nov-2020
CFR0011-120-00-FM Rev 5
8 of 444
© 2018-2020 Dialog Semiconductor
DA14681
FINAL
Bluetooth Low Energy 4.2 SoC
Table 2: Pin description
Pin no. Pin no.
Drive Reset
(mA) state
Pin name
Type
Description
AQFN
WLCSP
General Purpose I/Os (fixed pin assignment; additional functions are programmable via Pxx_MODE_REG)
B1
A2
A3
A1
A4
A5
B8
B8
A7
B7
A8
C8
C7
F4
P0_0/
DIO
4.8
4.8
4.8
4.8
4.8
4.8
4.8
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. Contains state retention mechanism
during power down.
QSPI_CLK
P0_1/
DO
OUTPUT. QSPI clock.
DIO
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. Contains state retention mechanism
during power down.
QSPI_D0
P0_2/
DIO
DIO
INPUT/OUTPUT. QSPI data I/O 0.
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. Contains state retention mechanism
during power down.
QSPI_D1
P0_3/
DIO
DIO
INPUT/OUTPUT. QSPI data I/O 1.
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. Contains state retention mechanism
during power down.
QSPI_D2
P0_4/
DIO
DIO
INPUT/OUTPUT. QSPI data I/O 2.
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. Contains state retention mechanism
during power down.
QSPI_D3
P0_5/
DIO
DIO
INPUT/OUTPUT. QSPI data I/O 3.
I-PU INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. Contains state retention mechanism
during power down.
QSPI_CS
P0_6/
DO
OUTPUT. QSPI chip select (active LOW).
DIO
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
INPUT/OUTPUT. JTAG data I/O signal.
SWDIO/
DIO
Note: This is the only pin with output capability in
Extended Sleep mode. Minimum 1V VDD required to
drive this pin while in Extended Sleep.
PWM5/
BANDGAP_E
NABLE
DO
DO
OUTPUT. Timer 1 PWM output (PWM5) in Sleep mode.
OUTPUT. Internal BANDGAP_ENABLE signal indicat-
ing the sleep time in detail
ADC4
AI
INPUT. Analog input for ADC channel 4.
Datasheet
Revision 3.1
24-Nov-2020
CFR0011-120-00-FM Rev 5
9 of 444
© 2018-2020 Dialog Semiconductor
DA14681
FINAL
Bluetooth Low Energy 4.2 SoC
Table 2: Pin description
Pin no. Pin no.
Drive Reset
(mA) state
Pin name
Type
Description
AQFN
WLCSP
A34
A6
P0_7/
DIO
4.8
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. Contains state retention mechanism
during power down.
ADC3
P1_0/
AI
INPUT. Analog input for ADC channel 3.
B15
A17
C2
F3
DIO
4.8
4.8
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down/up enabled dur-
ing and after reset. General purpose I/O port bit or alter-
nate function nodes. State retention during power down.
INPUT. Analog input for ADC channel 5.
ADC5
P1_1/
AI
DIO
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
Note: to use this pin in GPIO mode
USBPAD_REG[USBPAD_EN] must be set. Must be
used in V33 supply only.
USBN
P1_2/
AIO
DIO
INPUT/OUTPUT. Analog USB Full Speed D- signal.
A27
B23
A26
A28
B12
C1
B6
D1
B2
E2
4.8
4.8
4.8
4.8
4.8
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down/up enabled dur-
ing and after reset. General purpose I/O port bit or alter-
nate function nodes. State retention during power down.
INPUT. Analog input for ADC channel 0.
ADC0
P1_3/
AI
DIO
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down/up enabled dur-
ing and after reset. General purpose I/O port bit or alter-
nate function nodes. State retention during power down.
INPUT. Analog input for ADC channel 2.
ADC2
P1_4/
AI
DIO
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down/up enabled dur-
ing and after reset. General purpose I/O port bit or alter-
nate function nodes. State retention during power down.
INPUT. Analog input for ADC channel 1.
ADC1
P1_5/
AI
DIO
I-PU INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down/up enabled dur-
ing and after reset. General purpose I/O port bit or alter-
nate function nodes. State retention during power down.
INPUT. Analog input for ADC channel 6.
ADC6
P1_6/
AI
DIO
I-PU INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-up enabled during and
after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
INPUT. Analog input for external NTC resistor for bat-
tery temperature sensing.
NTC
AI
A25
D2
P1_7
DIO
4.8
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
Datasheet
Revision 3.1
24-Nov-2020
CFR0011-120-00-FM Rev 5
10 of 444
© 2018-2020 Dialog Semiconductor
DA14681
FINAL
Bluetooth Low Energy 4.2 SoC
Table 2: Pin description
Pin no. Pin no.
Drive Reset
(mA) state
Pin name
Type
Description
AQFN
WLCSP
A23
E1
P2_0/
DIO
4.8
4.8
4.8
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
INPUT. Analog input of the XTAL32K crystal oscillator.
INPUT. Digital input for an external clock (square wave).
XTAL32KP
P2_1/
AI
DI
B13
A16
F1
DIO
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
OUTPUT. Analog output of the XTAL32K crystal oscilla-
tor.
XTAL32KM
P2_2/
AO
G3
DIO
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
Note: to use this pin in GPIO mode
USBPAD_REG[USBPAD_EN] must be set. Must be
used in V33 supply only.
USBP
P2_3
AIO
DIO
INPUT/OUTPUT. Analog USB Full Speed D+ signal.
A35
A14
B5
F5
4.8
4.8
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
P2_4/
DIO
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
INPUT. JTAG clock signal.
SWCLK/
ADC7
DI
AI
INPUT. Analog input for ADC channel 7.
A37
A12
A10
A7
N/A
N/A
N/A
N/A
N/A
P3_0
P3_1
P3_2
P3_3
P3_4
DIO
DIO
DIO
DIO
DIO
4.8
4.8
4.8
4.8
4.8
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
A9
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
Datasheet
Revision 3.1
24-Nov-2020
CFR0011-120-00-FM Rev 5
11 of 444
© 2018-2020 Dialog Semiconductor
DA14681
FINAL
Bluetooth Low Energy 4.2 SoC
Table 2: Pin description
Pin no. Pin no.
Drive Reset
(mA) state
Pin name
Type
Description
AQFN
WLCSP
A20
N/A
P3_5
DIO
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
4.8
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
A22
B14
A24
B16
B17
A31
A32
A33
B22
A36
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
P3_6
P3_7
P4_0
P4_1
P4_2
P4_3
P4_4
P4_5
P4_6
P4_7
DIO
DIO
DIO
DIO
DIO
DIO
DIO
DIO
DIO
DIO
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
I-PD INPUT/OUTPUT with selectable pull up/down resistor
and open drain functionality. Pull-down enabled during
and after reset. General purpose I/O port bit or alternate
function nodes. State retention during power down.
Debug interface
B8
F4
SWDIO
DIO
DIO
4.8
4.8
I-PD INPUT/OUTPUT. JTAG Data input/output. Bidirectional
data and control communication. Mapped on P0_6.
A14
F5
SW_CLK
I-PD INPUT JTAG clock signal. Mapped on P2_4.
Clocks
A29
B1
A1
XTAL16MP
XTAL16MM
AI
INPUT. Crystal input for the 16 MHz XTAL oscillator.
OUTPUT. Crystal output for the 16 MHz XTAL oscillator.
A30
AO
Datasheet
Revision 3.1
24-Nov-2020
CFR0011-120-00-FM Rev 5
12 of 444
© 2018-2020 Dialog Semiconductor
DA14681
FINAL
Bluetooth Low Energy 4.2 SoC
Table 2: Pin description
Pin no. Pin no.
Drive Reset
(mA) state
Pin name
Type
Description
AQFN
WLCSP
A23
E1
XTAL32KP
AI
INPUT. Crystal input for the 32.768 kHz XTAL oscillator.
Mapped on P2_0.
B13
F1
XTAL32KM
AO
OUTPUT. Crystal output for the 32.768 kHz XTAL oscil-
lator. Mapped on P2_1.
QSPI interface
B1
A5
B8
C7
QSPI_CLK
QSPI_CS
DIO
DIO
OUTPUT. QSPI clock. Mapped on P0_0.
OUTPUT. QSPI chip select (active LOW). Mapped on
P0_5.
A2
A3
A1
A4
A7
B7
A8
C8
QSPI_D0
QSPI_D1
QSPI_D2
QSPI_D3
DIO
DIO
DIO
DIO
INPUT/OUTPUT. QSPI data 0. Mapped on P0_1.
INPUT/OUTPUT. QSPI data 1. Mapped on P0_2.
INPUT/OUTPUT. QSPI data 2. Mapped on P0_3.
INPUT/OUTPUT. QSPI data 3. Mapped on P0_0.
Quadrature decoder (mapped on port Px_y)
QD_CHA_X
QD_CHB_X
QD_CHA_Y
QD_CHB_Y
QD_CHA_Z
QD_CHB_Z
DI
DI
DI
DI
DI
DI
INPUT. Channel A for the X axis.
INPUT. Channel B for the X axis.
INPUT. Channel A for the Y axis.
INPUT. Channel B for the Y axis.
INPUT. Channel A for the Z axis.
INPUT. Channel B for the Z axis.
SPI bus interface (mapped on port Px_y)
SPI_CLK
SPI_DI
DIO
DI
INPUT/OUTPUT. SPI clock.
INPUT. SPI data input.
SPI_DO
SPI_EN
SPI2_CLK
SPI2_DI
SPI2_DO
SPI2_EN
DO
DI
OUTPUT. SPI data output.
INPUT. SPI clock enable.
INPUT/OUTPUT. SPI 2 clock.
INPUT. SPI 2 data input.
OUTPUT. SPI 2 data output.
INPUT. SPI 2 clock enable.
DIO
DI
DO
DI
I2C bus interface (mapped on port Px_y)
SDA
DIO/
INPUT/OUTPUT. I2C bus data with open drain port.
DIOD
SCL
DIO/
DIOD
INPUT/OUTPUT. I2C bus clock with open drain port.
Supports bit stretching by a slave in open drain mode.
SDA2
SCL2
DIO/
DIOD
INPUT/OUTPUT. I2C bus 2 data with open drain port.
DIO/
DIOD
INPUT/OUTPUT. I2C bus 2 clock with open drain port.
Supports bit stretching by a slave in open drain mode.
UART interface (mapped on port Px_y)
UTX
DO
OUTPUT. UART transmit data.
INPUT. UART receive data.
URX
DI
DO
DI
UTX2
URX2
URTS2
OUTPUT. UART 2 transmit data.
INPUT. UART 2 receive data.
OUTPUT. UART 2 request to send.
DO
Datasheet
Revision 3.1
24-Nov-2020
CFR0011-120-00-FM Rev 5
13 of 444
© 2018-2020 Dialog Semiconductor
DA14681
FINAL
Bluetooth Low Energy 4.2 SoC
Table 2: Pin description
Pin no. Pin no.
Drive Reset
(mA) state
Pin name
Type
Description
INPUT. UART 2 clear to send.
AQFN
WLCSP
UCTS2
DI
Infrared (IR) interface (mapped on port Px_y)
IR_OUT DO
Keyboard scanner interface (mapped on port Px_y)
OUTPUT. Infrared data.
KSC_ROWx
KSC_COLx
DO
DI
OUTPUT. Keyboard rows driven by the scanner.
INPUT. Keyboard columns sampled by the scanner.
PDM interface (mapped on port Px_y)
PDM_CLK
DO
DIO
OUTPUT. PDM clock output.
INPUT/OUTPUT. PDM data.
PDM_DATA
Datasheet
Revision 3.1
24-Nov-2020
CFR0011-120-00-FM Rev 5
14 of 444
© 2018-2020 Dialog Semiconductor
DA14681
FINAL
Bluetooth Low Energy 4.2 SoC
Table 2: Pin description
Pin no. Pin no.
Drive Reset
(mA) state
Pin name
Type
Description
AQFN
PCM interface (mapped on port Px_y)
WLCSP
PCM_DO
PCM_DI
DO
OUTPUT. PCM data output.
DI
INPUT. PCM data input.
PCM_CLK
PCM_FSC
DIO
DIO
INPUT/OUTPUT. PCM bus clock.
INPUT/OUTPUT. PCM frame sync.
PWM interface (mapped on port Px_y)
PWM0
PWM1
PWM2
PWM3
PWM4
PWM5
DO
OUTPUT. Pulse Width Modulated output of Timer 0.
OUTPUT. Pulse Width Modulated output of Timer 0.
OUTPUT. Pulse Width Modulated output of Timer 2.
OUTPUT. Pulse Width Modulated output of Timer 2.
OUTPUT. Pulse Width Modulated output of Timer 2.
DO
DO
DO
DO
DO
B8
F4
OUTPUT. Pulse Width Modulated output of Timer 1.
Mapped on P0_6 in Sleep mode.
Analog interface
A27
A26
B23
A34
B8
C1
D1
B6
A6
F4
C2
B2
F5
ADC0
ADC1
ADC2
ADC3
ADC4
ADC5
ADC6
ADC7
AI
AI
AI
AI
AI
AI
AI
AI
INPUT. Analog to Digital Converter input 0. Mapped on
P1_2.
INPUT. Analog to Digital Converter input 1. Mapped on
P1_4.
INPUT. Analog to Digital Converter input 2. Mapped on
P1_3.
INPUT. Analog to Digital Converter input 3. Mapped on
P0_7.
INPUT. Analog to Digital Converter input 4. Mapped on
P0_6.
B15
A28
A14
INPUT. Analog to Digital Converter input 5. Mapped on
P1_0.
INPUT. Analog to Digital Converter input 6. Mapped on
P1_5.
INPUT. Analog to Digital Converter input 7. Mapped on
P2_4.
USB FS interface
A16
G3
USBP
USBN
AIO
AIO
INPUT/OUTPUT. Analog USB Full/Low speed D+ sig-
nal. Mapped to P2_2.
A17
F3
INPUT/OUTPUT. Analog USB Full/Low speed D- signal.
Mapped to P1_1.
Radio transceiver
B20
B19
A4
A3
RFIOP
RFIOM
AIO
AIO
RF input/output. Impedance 50
RF ground.
Miscellaneous
A21
B10
G1
G2
RST
DI
INPUT. Reset signal (active HIGH).
LED1
AO
White LED driver output 1 (open drain, 20 mA maxi-
mum).
A19
N/A
LED2
AO
White LED driver output 2 (open drain, 20 mA maxi-
mum).
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Bluetooth Low Energy 4.2 SoC
Table 2: Pin description
Pin no. Pin no.
Drive Reset
(mA) state
Pin name
Type
Description
AQFN
WLCSP
B11
N/A
LED3
AO
White LED driver output 3 (open drain, 20 mA maxi-
mum).
A18
B9
F2
E3
SOCP
SOCN
AIO
AIO
Battery fuel gauge input.
Battery fuel gauge ground. Connect as star point.
Power supply
A13
B6
G6
F6
VBAT1
VBAT2
AI
AI
INPUT. Battery connection 1 for LDO supply.
INPUT. Battery connection 2 for DC-DC converter sup-
ply.
B7
G5
A2
VBUS
AI
AI
INPUT. USB bus voltage.
INPUT. Battery charge voltage.
B18
V14_RF
AI
INPUT. Radio supply voltage. Connect to V14 exter-
nally.
4.7 F decoupling capacitor required.
A11
B5
G8
F7
LX
LY
AIO
AIO
INPUT/OUTPUT. Connection for the external DC-DC
converter inductor.
INPUT/OUTPUT. Connection for the external DC-DC
converter inductor.
A15
A6
G4
D8
V33
V14
AO
AO
OUTPUT. 3.3 V power rail. Maximum current 100 mA.
OUTPUT. 1.4 V power rail. Maximum current 20 mA.
4.7 F decoupling capacitor required.
B3
A8
B4
B2
E7
E8
F8
D7
V12
AO
AO
AO
AI
OUTPUT. 1.2 V power rail. Maximum current 50 mA.
OUTPUT. 1.8 V power rail. Maximum current 75 mA.
OUTPUT. 1.8 V power rail. Maximum current 75 mA.
VDD1V8
VDD1V8P
VDDIO
INPUT. FLASH interface supply voltage (1.8 V to 3.3 V).
1 F ceramic decoupling capacitor required.
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
B21
B4
C3
C6
D3
D4
D5
D6
E4
E5
E6
G7
A5
PSUB_RF
GND_RF2
VSS1
-
-
-
-
-
-
-
-
-
-
-
-
-
Connect to ground.
Connect to ground.
Connect to ground.
Connect to ground.
Connect to ground.
Connect to ground.
Connect to ground.
Connect to ground.
Connect to ground.
Connect to ground.
Connect to ground.
Connect to ground.
GND_RF1
AVS1
VSS3
VSS2
AVS2
VSSIO2
VSSIO1
GND_BUCK
ESDN
die pad N/A
GND
Common ground plane for radio, analog and digital cir-
cuits.
Unconnected pins
A1, A2, N/A
A3, A4,
NC
Internally not connected. Leave open or connect to
ground.
A5, B1
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Bluetooth Low Energy 4.2 SoC
Table 3: Pin type definitions
VDD1v2
Px_MODE_REG[PUPD]
Digital/analog PAD I/O configurations:
V33
VDD1V8
DO:
DI:
DIO:
Digital Output
Digital Input
Digital Input/Output
25k
VSS
VDD
DIOD: Digital Input/Output open drain
AI:
Analog input
Open drain
AO:
AIO:
Analog Output
Analog Input/Output
Data
PIN
Output Enable
Pullup/pulldown extensions:
PU: Fixed pull-up resistor
PD: Fixed pull-down resistor
VSS
active ESD
protection
Analog
ESD
SPU: Switchable pull-up resistor
SPD: Switchable pull-down resistor
protection
25k
GND
VDDIO_xxx PAD supports 1.8 V or 3.3 V
BP = Back drive protected up to 3.45 V
Digital PADs for GPIO w/wo analog
VDD1v2
V12
Px_MODE_REG[PUPD]
CLK_AMBA_REG[QSPI_ENABLE] = 1
V33
VDD1V8
VDDIO
25k
VSS
VDD
VSS
V12
Open drain
QSPI_SLEW[1:0]
Data
Data
PIN
PIN
QSPI_DRV[1:0]
Output Enable
VSS
VSS
active ESD
active ESD
25k
protection
Analog
ESD
protection
protection
25k
USB PHY
GND
GND
Digital PADs for USB PHY with GPIO
Digital PADs for QSPI
LDO
1.2 V
V14_RF
Analog PIN
XTAL16MP
XTAL16MM
Xtal
osc
active ESD
protection
GND
active ESD
protection
active ESD
protection
GND
PAD A1
PAD A2
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Bluetooth Low Energy 4.2 SoC
Table 3: Pin type definitions
rfio_p
rfio_n
RFIOP
RFIOM
GND
reset_n
reset
V12
GND
RST
25k
active ESD
protection
GND
PAD RF
PAD RST
PWM
LED
active ESD
20mA max
protection
GND
PAD LED
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DA14681
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QSPI Controller. Interface to an external Quad SPI
Bluetooth Low Energy 4.2 SoC
3
System overview
FLASH device. It also supports single or dual SPI.
3.1 INTERNAL BLOCKS
General purpose (GP) ADC. This is a 10-bit analog-
to-digital converter with 8 external input channels and
averaging capabilities, which increase the effective
number of bits (ENOB) to 11.
The DA14681 contains the following blocks:
ARM CortexTM M0 CPU with Wake-up Interrupt Con-
troller (WIC). This processor provides 0.9 dMIPS/MHz
and is used for implementing the higher layers of the
Bluetooth Low Energy protocol. It is also used for the
application requirements including controlling of the
power scheme of the system, reaching up to 86 dMIPs
if required. It is accompanied by a powerful cache con-
troller with configurable associativity, cache line size
and RAM size.
Radio transceiver. This block implements the RF part
of the Bluetooth Low Energy protocol at 2.4 GHz.
Clock generator. This block is responsible for the
clocking of the system. It contains two crystal oscilla-
tors: one running at 16 MHz (XTAL16M), which is used
for the active mode of the system, and one running at
32.768 kHz (XTAL32K), which is used for the sleep
modes of the system.
BLE 4.2 Core. This is the baseband hardware acceler-
ator for the Bluetooth Low Energy protocol supporting
all 4.2 features. such as data length extension, secure
connections and enhanced privacy 1.2.
There are also three RC oscillators available: a 16 MHz
and a 32 kHz oscillator (RC16M and RC32K) with low
precision (> 500 ppm) and a 10.5 kHz oscillator (RCX)
with higher precision (< 500 ppm).
Co-existence The CoEx sub-block implements a coex-
istence interface with external collocated modules
interfering with the 2.4GHz ISM band. A three wire
interface is realized to sync with the external modules
about the priority and the activity of the internal radio.
The RCX oscillator can be used as a sleep clock
replacing the XTAL32K oscillator to reduce the bill of
materials of the system. The RC16M oscillator is used
to provide a clock for running SW already before the
XTAL16M oscillator has settled after power/wake up.
ROM. This is a 128 kB ROM containing the Bluetooth
Low Energy protocol stack as well as the boot code
sequence.
Additionally, a low power, short lock time PLL can be
activated to increase system’s speed to 96 MHz.
OTP. This is a 64 kB One Time Programmable memory
array, used to store the application code as well as the
Bluetooth Low Energy profiles. It also contains sys-
tem’s configuration and calibration values.
Timers. This block contains a 16-bit general purpose
timer (Timer0) with PWM capability, a 16-bit general
purpose up/down timer (Timer1) with PWM capability,
which can operate at any clock even when in sleep/
deep sleep mode, and a 14-bit timer (Timer2), which
controls three PWM signals with respect to frequency
and duty cycle. The timer block also comprises a dedi-
cated timer implementing an LED “breathing” function
with 256 steps granularity.
Data RAM. This is a 128 kB Data RAM (DataRAM)
which can be used for mirroring the program code from
the OTP when the system wakes/powers up or as a
normal data RAM when the system executes code
directly from OTP or external FLASH. It also serves as
Data RAM for variables and various data that the proto-
col requires to be retained when system goes to sleep.
It comprises 5 physical RAM cells, all with content
retaining capability.
Wake-up controller. This is a timer for capturing exter-
nal events, that can be used as a wake-up trigger
based on a programmable number of external events
on any of the GPIO ports, or as a GPIO triggered inter-
rupt generator when the system is awake.
Cache/Tag RAM. This is a 16 kB data RAM used pri-
marily by the cache controller (CacheRAM). It is
accompanied by a Tag RAM. In mirrored mode the
CacheRAM can be used as an extension of the Data-
RAM, increasing the available memory to 144 kB.
Quadrature decoder. This block decodes the pulse
trains from a rotary encoder to provide the step size
and the direction of movement of an external device.
Three axes (X, Y, Z) are supported.
Cache controller. This is an instruction cache control-
ler used for code execution directly from OTP or exter-
nal QSPI FLASH, thus reducing accesses to these
memories.
Keyboard scanner. This circuit implements scanning
and debouncing of a keyboard matrix and generates
an interrupt when a report is ready on a key press/
release.
UART and UART2. Asynchronous serial interfaces.
UART2 implements hardware flow control with a FIFO
of 16 bytes depth.
Infrared (IR) generator. This controller implements a
very flexible, low power, microcode based scheme for
IR protocols primarily used for remote controls.
SPI and SPI2. These are the serial peripheral inter-
faces with master/slave capability with a 16-bit wide
FIFO of 16 places.
AHB/APB bus. Implements the AMBA Lite version of
the AHB and APB specifications. Two different AHB
busses are used, one for the CPU and one for the
DMAs of the system. APB32 is implemented for the
Audio peripherals while APB16 is used for the other
peripheral blocks.
I2C and I2C2. These are Master/Slave I2C interfaces
used for sensors and/or host MCU communication.
Each controller includes a FIFO of 4, 9-bit locations.
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interaction devices, etc. Customers are able to develop
and test their own applications. Upon completion of the
development, the application code can be programmed
into the embedded OTP or external QSPI FLASH
memory.
Bluetooth Low Energy 4.2 SoC
USB 1.1 FS Device. This is a 12 Mbit/s only USB
device controller, which is mainly used for software
upgrades. its power source pin (VBUS) is used for
recharging the system’s battery.
Cryptography blocks. The cryptography blocks con-
sist of a AES/HASH controller and an Elliptic Curve
Controller (ECC), accelerating any application security
requirements. A True Random Number Generator
(TRNG) is also provided enabling secure key genera-
tion.
In principle, the system has two functional modes of
operation:
A. Mirrored mode. Application, profiles etc. are all
included in the OTP or external FLASH. They will be
mirrored at boot or wake-up time into the unified RAM,
which consists of both the CacheRAM and the Data-
RAM cells in a single, continuous memory space. Next,
the CPU starts executing from the unified RAM, which
is used for code as well as data.
DMA Engine. This is a general purpose DMA engine
with 8 channels that can be multiplexed to support data
fetching between peripherals and DataRAM.
Audio blocks. This part enables audio streaming by
means of a Pulse Density Modulation (PDM), a Sample
Rate Converter (SRC) and a Pulse Code Modulation
(PCM) interface. It can support 2 digital microphones or
2 digital loudspeakers using the PDM interface or con-
nect an external CoDec at the PCM/I2S interface.
During Mirrored mode the cache controller is totally
bypassed while all of its RAM cells (except for the Tag
RAM) are virtually moved into a continuous memory
space.
B. Cached mode. This mode uses the memory
resources of the system as described in the block dia-
gram. The cached area can be OTP and/or the exter-
nal FLASH memory space. Code is executed directly
from the OTP/FLASH through the cache controller,
while DataRAM is used for intermediate variables,
stacks, heaps and application data.
Power management. A sophisticated power manage-
ment circuit with a Single Inductance Multiple Output
(SIMO) Buck DC-DC converter and several LDOs that
can be turned on/off via software. Extra pins are pro-
vided for supplying external devices, even when the
DA14681 is in extended sleep mode. It also comprises
a Constant Current/Constant Voltage (CCCV) charger
for the battery charging and a state-of-charge fuel
gauge circuit.
Mirrored mode or Cached mode should be configured
during initialisation of the system and not dynamically.
There are several different ways of executing code and
mapping the data segment of the system. The following
table provide an overview of the different possibilities
for BLE product use cases.
A more detailed description of each of the components
of the DA14681 is presented in the following sections.
3.2 FUNCTIONAL MODES
The DA14681 is optimised for embedded applications
such as health monitoring, sports measuring, human
Table 4: Memory configurations
Application and
BLE Exchange RAM
Functional mode
and data
Use case
BLE stack code
profile code
BLE_01
BLE_02
BLE_03
BLE_04
BLE_05
ROM
ROM
ROM
ROM
FLASH
OTP
DataRAM
DataRAM
DataRAM
DataRAM
DataRAM
Mirrored
Mirrored
Cached
Cached
Cached
FLASH
OTP
FLASH
FLASH
In addition, it is also possible to use parts of the Data-
RAM as code segments. In that case, parts of the code
can be placed in the DataRAM (a non-cacheable area),
while the system is operating in cached mode.
wide) in the OTP memory space. It is partitioned into
four sections that contain vital information for the sys-
tem, as illustrated in the following table.
3.3 SYSTEM CONFIGURATION
The DA14681 contains a 64 kB One Time Programma-
ble (OTP) memory, which is used for storing the code
(as explained in Table 4) and for retaining the system’s
configuration data in a special OTP space called the
“OTP header”.
The OTP header occupies the last 712 words (64 bits
Datasheet
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Bluetooth Low Energy 4.2 SoC
Table 5: OTP header details
Address
Size (B) Field name
Description
0x7F8E9C0
0x7F8E9C0
184
Chip Configuration Section (CCS)
8
Mirrored/Cached At startup
Non-Volatile Memory
Product Ready
0: Mirrored
1: Cached
0x7F8E9C8
0x7F8E9D0
0x7F8E9D8
8
8
8
0: FLASH
Anything else: OTP
0x00: OTP or FLASH not programmed
0xAA: OTP or FLASH programmed
Redundancy
0: Used
1: Not used
0x7F8E9E0
0x7F8E9E8
8
8
Reserved
Shuffle RAMs
Define the sequence of the RAM cells in a continu-
ous memory space
0x0: DataRAM1, DataRAM2, DataRAM3
0x1: DataRAM2, DataRAM1, DataRAM3
0x2: DataRAM3, DataRAM1, DataRAM2
0x3: DataRAM3, DataRAM1, DataRAM1
DataRAM1=8KB, DataRAM2=24KB,
DataRAM3=32KB
0x7F8E9F0
0x7F8E9F8
0x7F8EA00
8
8
8
JTAG
0x0: Enabled
0x1: Disabled
Sleep Clock
Position/Package
0x0: XTAL32
0x1: RCX
B7-B4: Reserved. Keep these values to 0
B3:
0x00 – WLCSP
0x55 – aQFN60(DA14681/DA15101)
0x99 – KGD
B2: Wafer number
B1: Y coord,
B0: X coord.
0x7F8EA08
0x7F8EA10
8
8
Tester/Timestamp
B7: Reserved
B6: Tester ID (MSByte)
B5: Tester ID (LSByte)
B4: Tester Site
B3: TimeStamp Byte 3
B2: TimeStamp Byte 2
B1: TimeStamp Byte 1
B0: TimeStamp Byte 0
Mirror Image Length
Contains the size of the image to be mirrored
(unit: 32-bit words)
0x7F8EA18
0x7F8EA20
8
8
Reserved
Chip Unique ID
ASCII code for “14681AE “
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Table 5: OTP header details
Address
Size (B) Field name
8 Cache architecture
Description
0x7F8EA28
Defines the Cache architecture to be programmed at
SW reset:
Bits[3:0] Cache Line Size
0x0: 8 bytes
0x1: 16 bytes
0x2: 32 bytes
0x3 - 0x7: RESERVED
Bits[7:4] Associativity
0x0: Direct Mapped
0x1: 2-way set
0x2: 4-way set
0x3 - 0x7: RESERVED
Bits[11:8] Cache Size
0x0: RESERVED
0x1: 8 KBytes
0x2: 16 KBytes
0x3-0x7: RESERVED
Bits[15:12] RESERVED
0x7F8EA30
8
Serial Configuration Mapping
B0[7:4]: Serial signal 1, port number
B0[3:0]: Serial signal 1, bit number
B1[7:4]: Serial signal 2, port number
B1[3:0]: Serial signal 2, bit number
B2[7:4]: Serial signal 3, port number
B2[3:0]: Serial signal 3, bit number
B3[7:4]: Serial signal 4, port number
B3[3:0]: Serial signal 4, bit number
B4: Booting Method
0xAA: booting from a specific serial port (B5) and
at a specific location (B0 to B3)
0x00: normal booting sequence
B5: Serial Interface:
0x0: None
0x1: UART
0x2: UART2
0x3: SPI
0x4: SPI2
0x5: I2C
0x6: I2C2
B6:
if UART/UART2 is selected:
0x0:115 kBaud,
0x1: 57.6 kBaud,
0x2: 38.4 kBaud,
0x3: 19.2 kBaud,
0x4: 9.6 kBaud
SPI is not applicable since it is a slave interface
if I2C/I2C2:
0x0: Standard Mode (100 kbps)
0x1: Fast Mode (400 kbps)
B7: RESERVED
0x7F8EA38
0x7F8EA40
8
8
Image CRC
Reserved
CRC16 checksum for the programmed image
Reserved
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Table 5: OTP header details
Address
Size (B) Field name
8 QSPI Functions
Description
0x7F8EA48
Bit0
0: Reset Function of QSPI FLASH is in BootROM
1: Reset Function of QSPI FLASH is in OTP
Bit1
0: Find “qQ” Function of QSPI FLASH is in
BootROM
1: Find “qQ” Function of QSPI FLASH is in OTP
Bit2
0: QSPI loader of QSPI FLASH is in BootROM
1: QSPI loader of QSPI FLASH is in OTP
0x7F8EA50
8
UART STX timing
BDADDR
Defines the delay for booting from UART in units of
10 ms each.
0x7F8EA58
0x7F8EA78
0x7F8EA78
32
384
8
Bluetooth Address
Trim and Calibration Section (TCS)
Trim and Calibration Register
Address
B7 to B5: Inverted address
B3 to B0: Address
0x7F8EA80
0x7F8EA88
8
Trim and Calibration Register
Value
B7 to B5: Inverted data value
B3 to B0: Data value
368
Trim values
Contains all trim values and calibration values in
word pairs (Address, Value)
0x7F8EBF8
3072
Elliptic Curve Contents Section (ECS)
0x7F8EBF8
8
ECC image length and CRC
B7 to B5: Inverted value of B3-B0
B3 to B2: Image CRC
B1 to B0: Image length in 32-bit words
0x7F8EC00
3064
ECC microcode
Contains all ECC microcode for the Curves imple-
mentation
0x7F8F7F8
2048
QSPI FLASH Initialization Section (QFIS)
0x7F8F7F8
8
Address for the QSPI Reset
code
B7-B5: Section length (Bytes)
B3-B0: Address
0x7F8F800
0x7F8F808
0x7F8F810
0x7F8F818
8
Address for the QSPI "pP"
identification code
B7-B5: Section length (Bytes)
B3-B0: Address
8
Address for the QSPI Loader
code
B7-B5: Section length (Bytes)
B3-B0: Address
8
Address for the QSPI wake up B7-B5: Section length (Bytes)
uCode
B3-B0: Address
2016
Contains all QSPI related code
segments
Integrity of the data in the OTP header is guaranteed in
various ways. The OTP controller has an embedded
Error Correction Code hardware block, which can cor-
rect 1 bit error and detect 2 bit errors.
OTP, checking and then storing the value into the
respective register is considered to be a fast and easy
task for software.
The Elliptic Curve Contents Section contains its own
CRC-16 checksum, while the actual OTP image (not
present in the header) is also optionally protected by a
CRC-16 checksum (Image CRC).
Furthermore, the Chip Configuration Section contains
mostly flags with redundancy over the whole 64-bit
word to ensure no mistaken value will be read. The flag
value is repeated over all bytes of the word.
The QSPI FLASH Initialisation Section relies on the
The Trim and Calibration Settings Section comprises
the addresses and data values of the registers to be
configured after power/wake up. The OTP contains the
inverted values of both the address and the data val-
ues in the most significant 32-bit word. Reading from
OTP controller reports for integrity.
3.4 SYSTEM STARTUP PROCEDURE
After power-on or wake-up, a hardware state machine
is started, which resides in the Power Management
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Unit. Following this, the CPU will start executing code
from address 0x0. If the system is just powered-up,
then ROM resides at 0x0 hence the bootROM
sequence will be triggered. If the system was just
waken-up, then address 0x0 is remapped to either the
Data-RAM or one of the Non-Volatile resources of the
chip hence code is directly executed from there.
Default clock is
RC32 or Sleep
Clock
Start
3.4.1 Power/Wakeup FSM
VBUS > VBAT ?
Yes
No
The hardware FSM is responsible for starting the main
LDOs of the system and power the main rails used for
supplying the digital and analog resources of the chip.
The flow chart of this state machine is presented in Fig-
ure 4. System clock after Power On Reset is released,
is the 32 kHz coming from an on-chip RC oscillator
(RC32K). The FSM will initially compare the voltages
between pins VBUS and VBAT. This embedded PMU
feature provides a digital signal for deciding which LDO
to start so that Vsys is powered up. Please refer to Fig-
ure 7 for an overview of the LDOs.
Power On VSYS
Turn on LDO_USB
Power On VSYS
Turn on LDO_VBAT
Power On VEXT
Turn on LDO_IO2
When VBUS is present (the system is connected to the
USB for recharging or software upgrading), the PMU
powers the whole system from VBUS instead of VBAT.
Therefore a dedicated LDO_USB will be started. The
LDO_USB has its own reference and will switch to the
Bandgap reference voltage as soon as this has settled.
Power On VFLASH
Turn on LDO_IO
Power On VCORE
Turn on LDO_CORE
System clock is
RC16M
Untrimmed if power
up
When no VBUS is detected (no USB connection), the
LDO_VBAT will be turned on, followed by the Bandgap.
The LDO_VBAT also has its own reference for starting
up and will automatically switch to the Bandgap refer-
ence.
Switch to RC16
clock
Trimmed if Wake up
The next step is to start the LDO_IO2 and LDO_IO,
which provides power to the external rails, mostly tar-
geting external QSPI FLASH if available. Then the
LDO_CORE is enabled to supply the VDD voltage (1.2
V) for the digital core to start operating. From that point
onwards and provided that the LDOs are settled, the
digital system is up and running.
End
Figure 4: Power/Wakeup FSM flow diagram
When powered up the default clock is the RC32 which
is close to 32 kHz. The time required for the completion
of the HW FSM is 16 clock cycles i.e. 0.5 ms. If the sys-
tem wakes up, then the sleep clock is used: either the
XTAL32K (32 kHz) or the RCX (10.5 kHz). Depending
on the amount of time slept, there might be some
energy in the LDOs left or not, hence the settling time
might be less than expected. This process might take
11 to 16 clock cycles i.e. minimum 0.35 ms, maximum
1.6 ms.
Next, both 16 MHz oscillators are started. The system
clock switches to the 16 MHz RC clock to start OTP
mirroring or any other initialisation procedure that has
to do with an external FLASH.
Then the CPU can take over and either start executing
code from RAM (in the case of wake up) or ROM (in
the case of power up). If executing code from RAM, it
should switch on the SIMO DC-DC converter, disable
the LDOs to lower the power consumption of the digital
part and operate the radio. For a detailed overview of
the PMU, please refer to Figure 9 and for a representa-
tion of the timing of the power up/ wake up process
refer to Figure 17..
3.4.2 Goto Sleep FSM
After the sleep command has been issued (WFI), the
system will switch to operating on RC16M and the HW
FSM described in the flow chart of will take over:
The latency of the hardware FSM is not always the
same. It is depending on power up or wake up and
more specific, in the case of wake up, it depends on
the time the system has been sleeping before.
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bled, there is no way of enabling it again even by the
Bluetooth Low Energy 4.2 SoC
application.
Following that, trim and calibration values are read
from the OTP and stored into the respective retention
registers. Note that the TCS Section of the OTP header
(see Table 5) contains all register addresses and val-
ues that are being measured during production testing
or any other values that are required to be retained.
These values are all stored into their respective regis-
ters using a ‘while’ loop, which reads and evaluates all
TCS slots.
Default clock is
RC16(trimmed)
Start
Provided that this
LDO is enabled
by SW
Also
LDO_IO_RET are
started
Default clock is
Lp_clk (XTAL32K
or RCX)
Start
LDO_VBAT_RET
From that point onwards, the trimmed RC16 oscillator
provides a clock frequency very close to 16 MHz.
Disable
LDO_VBAT
The TCS values are protected using inverted redun-
dancy. When a voltage dropout occurs while reading or
writing the value, an incorrect redundancy check will
re-initiate the copy action. When copying is still unsuc-
cessful after 5 attempts, a hardware reset will be trig-
gered.
SLEEP_TIMER
counts (if
programmed ?0)
Go to Sleep
After a very short delay of approximately 200 us, the
XTAL16M oscillator is enabled.
End
The “Product Ready” flag defines whether the system
should follow the ‘NVM’ or the ‘SERIAL’ booting paths
of the flow chart. In the NVM case, the system is sup-
posed to start executing code from a Non-Volatile
memory (NVM), which can either be the OTP or the
QSPI FLASH in any of the functional modes.
Figure 5: Go to Sleep FSM flow diagram
Depending on the programming of the respective con-
trol registers the FSM will switch to the lp_clk and then
start (or not) the LDO_VBAT_RET to provide power at
the Vsys rail. LDO_IO_RET and LDO_IO_RET2 will
also be enabled (or not, depending on SW program-
ming) during this state. Additionally, the LDO_CORE is
disabled letting the LDO_SLEEP take over the supply
of the always on logic.
Following that, the FSM will disable the LDO_VBAT
and the LDO_IO/LDO_IO2.
Finally during the Go to Sleep state, the
SLEEP_TIMER starts counting if there has been a
value programmed in the SLEEP_TIMER_REG and
the system goes into sleep.
A detailed timing diagram of the go to sleep procedure
is illustrated at Figure 18.
3.4.3 BootROM sequence
The BootROM sequence will be triggered right after a
power-up or when the latest remapping of address 0 is
pointing to the ROM.
The booting process of the DA14681 is presented in
Figure 6.
The BootROM code starts with the RC16 oscillator
active but untrimmed, which provides an average fre-
quency of 10 MHz in typical conditions. The BootROM
code starts the watchdog timer, which will fire only after
2 seconds if not re-initialised.
Next, the OTP controller is initialised and two important
configuration flags are read and evaluated: the
sequence of the RAM cells and whether JTAG should
be enabled or not. Especially for the latter, if it is disa-
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Boot start
Default clock is
RC16M
Disable XTAL16M
Start LDO_RADIO
Initialise OTP
Shuffle RAM cells
Enable/disable JTAG
Copy TCS to registers
If copy values are
not correct then
issue a HW reset
0x00: Serial boot
0xAA: NVM boot
Else: HW reset
Wait for 200us and enable XTAL16M
Product
Ready?
Yes
No
Wait for 4 ms
Switch to XTAL16M
Boot from
specific serial
device?
Read serial
configuration
NVM is
QSPI or OTP
?
Yes
QSPI
OTP
Yes
Read reset seq. from OTP and run it
Check for “qQ” in the QSPI FLASH
Initialise specific
serial device
No
Cached/
Mirrored?
No
Initialise peripheral
devices
Device
found?
“qQ”
No
identified?
Boot from
SPI Master
Ext SPI
Master?
Yes
Yes
Yes
Yes
Yes
Cached
Mirrored
HW reset Copy QFIS uCode to QSPI FIFO
No
Yes
Boot from
UART
UART
No
Cached/
Mirrored
Mirrored?
Yes
Copy interrupt
vector table to
0x7FC00000
Configure image
length
A
Cached
Boot from
SPI Slave
Ext SPI
Slave?
Enable cache
controller
Copy image to
Data RAM
Enable cache
controller
No
Copy interrupt
vector table to
0x7FC00000
No
Copy
done?
Boot from
I2C
I2C?
Execute QFIS
loader
Remap to
Download code to
No
Yes
address 0x0
SW reset
Boot end
Data RAM
QSPI FLASH
programmed?
No
Disable Watchdog
Wait forever
Yes
A
Figure 6: BootROM sequence
Colored boxes indicate OTP header access.
The NVM booting sequence is as follows:
1. If the NVM is the QSPI FLASH:
apply it to the QSPI FLASH.
- Initialise the FLASH.
- Check whether there is a magic word written in
the FLASH (ASCII for “qQ”).
- Read the reset sequence from the OTP and
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Table 6: Scanning steps for booting from serial
Bluetooth Low Energy 4.2 SoC
- Download uCode for FLASH into the controller
from the QFIS segment of the OTP header.
Step
Boot from
Speed
- Identify in which memory mode the system is
operating (Cached or Mirrored):
1
UART
115.2 kbps
UTX => P0_1
URX => P0_2
- Mirrored mode: the Application code is copied
into the DataRAM and the cache controller is
bypassed, attaching the cache RAM to the
DataRAM memory space.
2
3
4
5
6
UART
UTX => P0_5
URX => P0_3
57.6 kbps
57.6 kbps
57.6 kbps
57.6 kbps
2 MHz
- Cached mode: the cache controller is initial-
ised as specified by the architectural parame-
ters and the interrupt vectors are copied at the
beginning of the DataRAM.
UART
UTX => P1_0
URX => P1_5
UART
UTX => P1_2
URX => P1_4
2. If the NVM is the OTP, then the same happens
in Mirrored mode, while the Cached mode only
requires the interrupt vector copy.
UART
UTX => P1_3
URX => P2_3
3. Remap address 0 to QSPI or OTP.
4. End the booting sequence with a software reset.
In the case of a non-‘Product Ready’ device, the sys-
tem clock is switched to the XTAL16M after a delay of 4
ms. This is required for making sure the oscillator is
settled. From this point there are two options in the
BootROM code:
SPI Slave
MISO => P0_2
MOSI => P0_1
SPI_CLK => P0_0
SPICS => P0_5
1. Booting from a specific serial interface. This
provides the ability to directly download code
from a specific serial interface without scanning
for a connected device first. This is to be used in
cases where an external MCU will boot the
DA14681. The configuration of the serial inter-
face in terms of pin location, controller and
speed is to be found in the OTP header as
explained in Table 5.
7
I2C
SCL => P0_1
SDA => P0_2
400 kbps
400 kbps
100 kbps
100 kbps
8
I2C
SCL => P0_5
SDA => P0_3
9
I2C
SCL => P1_0
SDA => P1_5
2. Booting from any connected device by scan-
ning a predefined number of GPIOs and inter-
faces. When the respective flag is not set in the
OTP header, booting from any serial interface
will occur. This provides the flexibility to initially
boot from a UART or an SPI at a totally blank
device to start development of applications. All
serial interfaces will be exercised once using the
protocols described in AN-B-046. When no con-
nection has been established, then a final
attempt is performed for identifying a valid QSPI
FLASH and if that is also unsuccessful, the sys-
tem gets into a while forever loop.
10
I2C
SCL => P1_3
SDA => P2_3
3.5 POWER CONTROL AND MODES
3.5.1 System Power Control
The PMU supports operation from coin-cell, 2x AAA
and rechargeable Lithium-Ion batteries. An overview
diagram is shown in Figure 7.
The sequence of the steps that the booter takes while
scanning for an external device is presented in the fol-
lowing table:
There are three main supply (input) pins: VBUS,
VBAT1 and VBAT2. VBUS is only used in case a USB
supply is connected to the device. In all other cases,
VBAT1 and VBAT2 are used, the first being the supply
of the LDOs and the second the DC-DC converter sup-
ply. VBAT1 and VBAT2 should be shorted together.
Table 6: Scanning steps for booting from serial
Step
Boot from
Speed
From VBAT1 or VBUS, the system supply (Vsys) is
generated by either LDO_USB or LDO_VBAT. Vsys is
used to power an accurate bandgap reference, the
internal sleep oscillator (RCX) and the I/O pins. In case
the DC-DC converter is not activated, Vsys is also
used to generate the Vcore for the digital domain and
the I/O supply.
0
SPI Master
Defined by
Master
MISO => P0_1
MOSI => P0_2
SPI_CLK => P0_3
SPICS => P0_4
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always active and is generated either from VBUS or
VBAT. This power domain is only used for the retention
circuits. The LDO_SLEEP supplies Vcore when all
other power supplies are off. This supply is used for the
digital wake-up state machine and retention during
sleep modes. A low power 32 kHz oscillator (RC32) is
used as a clock for the digital state machine.
Bluetooth Low Energy 4.2 SoC
The Radio, ADC, PLL and the Xtal16M oscillator can
be supplied by either the 1.4 V DC-DC converter output
or by the LDO_Radio.
The Single Inductor Multiple Outputs (SIMO) DC-DC
converter has four dedicated outputs and has an aver-
age efficiency of 82% when activated. Two of its out-
puts (VDD1V8 and VDD1V8P) deliver power to
external devices, even when the system is in sleep
mode, by using the LDO_RET_IOx. When the VBAT1
voltage is too low to achieve a correct conversion, the
LDO_IOx will still keep the outputs powered.
External devices might be powered by the VDD1V8,
VDD1V8P or even V33 pins, exploiting the DC-DC
converter efficiency and further optimising the system’s
power dissipation. External QuadSPI FLASH devices
and other components such as sensors can be pow-
ered by the VDD1V8 or VDD1V8P or even V33 pins.
In addition to the main supplies described above, the
PMU has several features to support ultra low power
sleep modes, where large parts of the system are
turned off. There is a dedicated supply domain that is
VBUS
LDO_USB_RET
V33
Vsys
LDO_USB
VBAT1
LDO_VBAT_RET
LDO_VBAT
SIMO DCDC
VDD1V8
V12
V14
Vflash
Vext
Vcore
VDD1V8P
Vradio
VBAT2
Figure 7: Power Management Unit overview
The partitioning of the DA14681’s resources with
3.5.2 Power domains
respect to the various power domains is presented in
the following table.
The DA14681 comprises several different power
domains, that are controlled by power switching ele-
ments, thus eliminating leakage currents by totally
powering them down.
Table 7: Power domains
Power
Description
domain
PD_AON
Always On. This power line connects to all resources that must be powered constantly: the ARM/WIC,
the BLE Timer, Timer1, the Retention SRAM, the PMU/CRG, the Wake-up controller, the pad ring and
various registers required for the Wake-Up sequence.
PD_SYS
System. This power line connects to all resources that should be powered only when the ARM Cortex
M0 is running: the AMBA bus, the OTP cell and controller, the QSPI controller, the ROM, the DataRAM
the Watchdog timer, the SW timers, the crypto controllers, the USB and the GPIO port multiplexing.
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Bluetooth Low Energy 4.2 SoC
Table 7: Power domains
Power
Description
domain
PD_PER
Peripherals. This power line connects to the peripherals that can be switched off after completing their
operation: the UARTs, the SPI, the I2C the Keyboard scanner, the ADC etc.
PD_RAD
Radio. This is the power island that contains the digital part of the Radio: the Modulator/Demodulator,
the RF control unit and register file. The power management of the analog Radio subsystems is done
within the Radio itself, since it contains several LDOs.
PD_BLE
BLE. This is a separate power island that only contains the Bluetooth Low Energy Lower Mac hardware
block.
An illustration of the power domains on the chip block
diagram is presented in the following figure.
FUEL
GAUGE
LDO
IO
CHARGER
(5V)
ARM Cortex M0
RAM 16KB
DCDC
PLL
96
MHz
XTAL
16
MHz
XTAL
32.768
kHz
RETAINABLE
RF
LDO
LDO
SYS
LDO
SLP
LDO
USB
Cache Controller
BrownOut &
POReset
RET. REGS
4-way Assoc.
RET. REGS
Radio
Tranceiver
AES/HASH/ECC/
TRNG
Digital
PHY
BLE
TIMER
RFCU
CRG
BLE 4.2 MAC
RAM
RAM Ctrl
128 kB
RETAINABLE
RET. REGS
OTP Ctrl
OTP
64 kB
RET. REGS
ROM
AMBA APB
AMBA AHB
ROM Ctrl
128 kB
DMA Engine
8-ch 10-bit ADC
SRC
PDM
IR Generator
UART/UART2
SPI / SPI2
Timers
TIMER1
Temperature
Sensor
QuadRature
Decoder (x3)
Quad SPI Ctrl
GP Registers
RET. REGS
LED
(x3)
WAKE
UP
RET. REGS
PCM/I2S
I2C / I2C2
Keyboard Scanner
USB 1.1 FS
Device
GPIO Multiplexing
BLE MAC Domain (PD_BLE)
Radio Domain (PD_RAD)
Analog/RF
Always On Domain (PD_AON)
Peripherals Domain (PD_PER)
System Domain (PD_SYS)
Figure 8: DA14680 digital power domains
There are specific blocks containing retention registers.
These are register that keep their contents even when
their power domain has been switched off.
1. Active mode
2. Extended Sleep mode
3. Deep Sleep mode
4. Hibernation mode
Moreover, all DataRAM and CacheRAM blocks have
their own retaining mechanism, i.e. they can be pro-
grammed to retain their content independently of the
status of the power domains.
However, there are several different configurations for
each power mode, depending on the amount of RAM
being retained and whether the DC-DC converter is
kept powered on or not.
3.5.3 Power modes
The DA14681 has four main power modes, which are
distinguished by the power domains and clocks that
are active:
The different configurations are presented in Table 8.
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Bluetooth Low Energy 4.2 SoC
Table 8: Power modes and configurations
Power
Power domains
Analog blocks
Clocks available
Retained memory Wake-up mechanism
Description
mode
Active
AON_PD=ON
SYS_PD=ON
BLE_PD=OPT1
RAD_PD=OPT
PER_PD=OPT
LDO_USB = OFF
LDO_RET=OFF
LDO_VBAT=ON
LDO_IO=OPT
BandGap=ON
LDO_CORE= OPT
SIMO= OPT
XTAL16M
RC16
XTAL32K (optional)
RCX
All memories are
powered up and
accessible
No wake up required. Sys- During this mode the system is executing code from
tem is up and running
RAM (mirrored mode) or cached in OTP or FLASH
(cached mode).
The Radio, the BLE and the Peripherals power
domains can optionally (OPT) be turned on/off,
according to the application's requirements. Software
is in control of these via register bits.
RC32
Radio activity
LDO_RAD=OPT
requires XTAL16M
If the system is idle, all power domains should be
turned off except AON and SYS, divide the system
clock to lowest value and have the CPU execute a
WFI command.
LDO_VBAT_RET=OPT clock
LDO_VBUS_RET=OFF
LDO_IO_RETx=OPT
LDO_SLEEP=OFF
Extended AON_PD=ON
LDO_USB=OFF
LDO_RET= ON
LDO_VBAT=OFF
LDO_IO=OPT
Low power clock:
XTAL32K (optional)
RCX
8KB to 128KB
Synchronously to the BLE The Extended Sleep mode is a mode where connec-
Sleep
SYS_PD=OFF
BLE_PD=OPT
RAD_PD=OPT
PER_PD=OPT
anchor points using the
Low power clock (XTAL or
RCX) BLE timer
tion to the protocol is sustained.
Granularity is:
8KB
24KB
In case of Mirrored Mode and No Retention RAM for
code then OTP or FLASH mirroring will occur upon
wake-up. In case of cached mode, no Retention for
BandGap=OFF
Asynchronously to the
LDO_CORE=OFF
SIMO=OFF
Either of the above
32KB
BLE anchor points from an code is required, only for data.
external device powered In case of external devices that need to wake up the
16KB Cache will be from battery via any GPIO
LDO_RAD= OPT
LDO_VBAT_RET=ON
LDO_VBUS_RET=OFF
LDO_IO_RETx=OPT
LDO_SLEEP=ON
system, there are two options: Either power them
externally or from the DA14681.
automatically
retained if in
cached mode
Asynchronously to the
BLE anchor points from
Timer1 interrupt.
Deep
Sleep
AON_PD=ON
SYS_PD=OFF
BLE_PD=OPT
RAD_PD=OPT
PER_PD=OPT
As above
RC32.
As above
None
Asynchronously to the
BLE using any GPIO. The
toggling activity on any of
the selected pins enables
The Deep Sleep mode assumes a long period of
inactivity for the system.
The RAM can still be retained. Waking up can only
happen from an external GPIO.
Before switching into
Deep Sleep mode,
RC32 has to be
active.
RC32.2
Hiberna-
tion
AON_PD=ON
SYS_PD=OFF
BLE_PD=OPT
RAD_PD=OPT
PER_PD=OPT
As above
RC32.
Asynchronously to the
BLE using any GPIO. The
toggling activity on any of
the selected pins enables
RC32.
The Hibernation mode assumes a long period of
inactivity for the system (can also be observed as
product shipping mode).
Before switching into
Deep Sleep mode,
RC32 has to be
active.
There is no RAM retained in the system.
1 : OPT means optionally on or off, configured by software
2 : The wake up GPIO must be configured at WKUP_SELECT_Px_REG before going to sleep
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• Two DC-DC converter outputs at 1.8 V with 75 mA
Bluetooth Low Energy 4.2 SoC
4
Power management
load capability for powering external devices
The DA14681 has a complete integrated power man-
agement unit (PMU) which comprises a Single Induct-
ance Multiple Output (SIMO) DC-DC converter with 4
outputs, various LDOs for the different power domains
of the system, a Constant Current Constant Voltage
(CCCV) charger for battery recharging, a charge detec-
tion circuit and a fuel gauge revealing the remaining
battery charge. The PMU is capable of supplying exter-
nal devices even when the DA14681 is in sleep mode.
• One LDO output up to 3.6 V with up to 110 mA load
capability
• DC-DC converter on/off control per output
• Active and Sleep mode current limited LDOs
• Use of small external components
• Supply of external rails (V33, VDD1V8, VDD1V8P)
while DA14681is in Sleep mode
The system diagram of the analog Power Management
Unit (PMU) is presented in Figure 9.
• Fuel gauge to indicate state-of-charge
• CCCV charger with battery/die-temperature protec-
tion
Features
• Synchronous Single Inductance Multiple Output
Buck DC-DC converter with 4 output power rails
• Interrupt line for the DCDC converter
• Programmable DC-DC converter output charging
sequence
VBAT1
VBUS
0.39Ohm
(4.2V - 5.75V)
CCCV
(1.7V - 4.5V)
charger
3x
10uF
Open-
drain
10uF
LDO-
VBAT
3.3V
LDO-
VBAT_
RET
VDDIO
LDO_ret
(clamp ~2V)
Low power
QSPI-I/O
LDO-
USB
3.3V
LDO_ret
(clamp ~3V)
Low power
SOCP
FUEL
GAUGE
0.1Ohm
Vcore
Vcont (<3.3V)
GPIOs
V33
SOCN
Vsys (1.7V - 3.3V)
110mA/3mA
4.7uF
USB
Dp
Dn
LDO_IO
_RET
Band-gap
RCX
LDO_IO
LDO_core
(by-pass)
1.2V
LDO_radio
(by-pass)
1.4V
USB-
Charge
-detect
LDO_sleep
(clamp ~1V)
Low power
VDD1V8
Vflash (1.8V)
75mA/3mA
10uF
Vcore (1.2V)
50mA/1mA
LDO_IO
_RET2
V12
LDO_IO2
4.7uF
Digital core
Dig.
VDD1V8P
RC16
XTAL32k
Vext (1.8V) 75mA/3mA
SIMO
Buck
DCDC
10uF
Wake-up
20mA
LX
LY
0.47uH
RC32
ON/OFF black blocks
ON/OFF green blocks
VBAT2
V14
Vradio (1.4V)
V14_RF
4.7uF
4.7uF
Vsys
Radio
LDO
1V2
ADC,
PLL
LDO
1V2
XTAL16M
Figure 9: Power management unit block diagram
Note 1: Quality of the V14_RF de-coupling capacitor is
affecting the radio performance
and VBAT2. The VBUS is connected when charging
the battery through the USB connector. VBAT1 should
be shorted with VBAT2 externally and supplies the
LDOs, while VBAT2 supplies the SIMO DCDC con-
verter. There are certain parts of the PMU which are
always powered. They are designated in red in Figure
9. The always on power circuitry consists of 2 clamps
and LDO_SLEEP which provides the necessary volt-
age when the system is in extended sleep, deep sleep
or hibernation mode. When the system wakes up, then
Note 2: Proposed de-coupling capacitor values provide
best system performance
Note 3: All de-coupling capacitors should be placed as
close to the respective pin as possible
4.1 ARCHITECTURE
There are 3 main power inputs, namely VBUS, VBAT1
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they are not used to supply any external devices.
Especially V14 should be connected via the PCB to the
V14_RF as displayed in Figure 9.
Bluetooth Low Energy 4.2 SoC
many of the blocks of the PMU are activated automati-
cally (in green) as explained in the power/wake up
sequence flow charts. Finally, SW is responsible for
activating the SIMO DCDC and any other block which
is in black in Figure 9.
IDIG and IRAD define the currents dissipated by the digi-
tal core and the radio, respectively, while IV18_ACT rep-
resents the current load on both 1.8 V power rails.
The current that the PMU can deliver on each rail in
Active/Sleep mode is presented in the following table.
Note that V14 and V12 are used for the radio and the
core respectively. Therefore it is recommended that
Table 9: PMU current supply capabilities
Parameter
Description
Conditions
Maximum value
Unit
IV33_ACT_LDO
Current drawn from pin
Power from
100 – IV18_ACT – IDIG - IRAD
mA
by external devices when LDO_VBAT
in Active mode
IV18_ACT= LDO_IO
I
+ ILDO_IO2
IV33_SLEEP
Current drawn from pin
by external devices when LDO_VBAT_RET
in Sleep mode
Power from
2 - IV33
mA
mA
mA
mA
IV18_ACT_LDO
IV18_ACT_SIMO
IV18_SLEEP
Current drawn from pin
by external devices when LDO_IO/LDO_IO2
in Active mode
Power from
100 – IV33_ACT – IDIG – IRAD
IV18_ACT. Max 75 mA
–
Current drawn from pin
by external devices when
in Active mode
Power from DCDC
75
Current drawn from pin
Power from
For each LDO: 2 – IV33_SLP
by external devices when LDO_IO_RET/
in Sleep mode LDO_IO_RET2
4.1.1 SIMO DC-DC converter
The heart of the PMU is the SIMO Buck DC-DC con-
verter. The block diagram is displayed in the following
figure:
Datasheet
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Bluetooth Low Energy 4.2 SoC
Charge Initiate
State
O utput Select
VBAT
P_SW
IM AX
CEXT_V14
=
10 µF
CEXT_V18
LEXT
470 nH
FSM
=
10 µF
D IG ITA L
CEXT_V12
4.7 µF
=
N _SW
FW _SW
IL=0
IL=IM AX
CEXT_V 18P
=
10 µF
O FF CHIP
Figure 10: SIMO DCDC Converter block diagram
the DCDC converter comprises 4 outputs:
is done using a priority select register, which holds the
sequence in which the outputs will be charged. Each
time one or more outputs require a charge cycle, the
system sorts the outputs based on this priority register
and loads this sequence in a four tab shift register.
• Vext which connects to the VDD1V8P pin and deliv-
ers 75 mA when DA14681 is in active. The voltage
range of this power rail is 1.8 V +/- 5%. External
devices, such as Power Amplifiers (PA), Front End
Modules (FEMs) or sensors can be powered by this
rail.
In order to minimize the ripple voltage on the outputs,
the current limit is dynamically set during operation in
Active mode. This is done by measuring how long each
output is above its minimum value after a charge cycle.
When this time is very long, more charge than required
(given the load current) was stored on the output
capacitor, so the current limit is reduced by one bit
(LSB). However, when the output voltage drops too
quickly, not enough charge was delivered to the output
capacitor, so the current limit is increased by one bit
(LSB).
• Vflash which is used for supplying external devices,
such as QSPI FLASH or sensors. This rail’s charac-
teristics are identical to the Vext one.
• Vradio which powers the RF circuits via a number of
dedicated LDOs. This rail delivers up to 20 mA at 1.4
V and should not be used for supplying external
devices.
• Vcore which supplies the digital core of the
DA14681 and delivers up to 50 mA at 1. 2 V when in
Active mode. This rail should not be used for supply-
ing external devices.
The efficiency of the DCDC converter on the VDD1V8
or VDD1V8P is illustrated in the following figure. It is
measured at three battery voltages (VBAT). The load
on V14 and V12 is kept constant at 2mA and 5mA
respectively.
The converter has an asynchronous architecture, i.e.
the on-time of the switches is not determined by an
external clock. Instead, the on-time is determined by a
(dynamically varying) current limit in the external induc-
tor. If one of the output voltages is too low (determined
using clocked comparators) a charge cycle is triggered.
However, it is possible for more than one outputs to be
below minimum at the same time, in which case the
system has to decide which output to charge first. This
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Figure 11: 1.8V rails DCDC efficiency vs load
Efficiency for sub-mA loads, i.e. between 100 uA and 1
mA is over 70% for VBAT > 3.5 V and over 80% for
VBAT < 3.5 V.
the load as well as different VBAT voltages, is pre-
sented in the following figures:
The efficiency of the V12 and V14 rails with respect to
Figure 12: 1.2V rail DCDC efficiency vs load
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Figure 13: 1.4V rail DCDC efficiency vs load
1.2V and 1.4V efficiency is measured with no load on
the 1.8V.
down again. This periodic operation is programmable
in terms of timing with use of the
SLEEP_TIMING_REG which counts sleep clock ticks.
4.1.2 LDOs
In active mode, when external supply is between 1.7 V
and 2.4 V and the DC-DC converter is bypassed (step-
down conversion not feasible due to low voltage), the
LDO_VBAT provides power to the Vsys line and the
LDO_IO/LDO_IO2, LDO_Core and LDO_radio to the
1.8 V rails, the Vcore and the Vradio, respectively.
Several LDOs are used to provide a stable power sup-
ply to all rails, when the SIMO DCDC is not active (e.g.
in Sleep mode or during start up) or when the device is
plugged onto a USB charger. Furthermore, bypassing
the DCDC is also considered, when the external volt-
age on pin VBAT2 is at the edge of enabling an efficient
step-down activity (i.e. < 2.3V).
Finally, when the system is connected to a USB
charger, pin VBUS is the source of the power instead
of pin VBAT1/VBAT2. The same path is used as with
VBAT2, but the LDO_USB is responsible for providing
the System supply line with power. This LDO is auto-
matically switched on as soon as a VBUS>VBAT1 volt-
age is sensed.
Two low power LDOs (LDO_ret) one connected to
VBUS and one to VBAT, provide power to the Vcont
power line and hence to the LDO_sleep (which is a
clamp actually). This LDO is responsible for providing
the VDD supply during Sleep mode, which can be
trimmed down to 0.85 V. This is basically the supply of
the Always On power domain (PD_AON) which is
always on, independently of active or any sleep mode.
4.1.2.1 LDOs Loadstep Response
This section summarizes the loadstep response of the
important LDOs of the PMU:
In Sleep modes the retention LDOs might take over
and make sure that the system is properly powered
without the need of the DC-DC converter. The
LDO_VBAT_RET provides power to the System supply
line the LDO_SLEEP at Vcore, and LDO_IO_RET/
LDO_IO_RET2 to the external 1.8 V power rails. There
is no need to power the Vradio since it is not enabled in
any of the sleep mode. The LDO_VBAT_RET and
LDO_IO_RETx circuits are identical and operate in a
sample & hold manner: They contain a reference volt-
age capacitance which is used to regulate the output
voltage. However, due to leakage, this internal refer-
ence capacitor is discharged. To keep as stable voltage
reference, a mechanism is built to start the Bandgap,
sample the voltage reference in the LDOs and shut it
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Figure 14: LDO_VBAT loadstep 0 to 100mA (Cload=4.7uF, Vout=3.3V)
Figure 15: LDO_IO loadstep 0 to 60mA (Cload=10uF)
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Figure 16: LDO_VBAT_RET loadstep 0 to 5mA (Cload=4.7uF, Vout=2.4V)
4.1.3 Switching from DC-DC to LDOs
mode and re-enable automatic switching over to Low
Voltage mode.
The DCDC converter can supply the maximum load
current for all four outputs down to a battery voltage of
approximately 2.4 V. When the voltage drops below
this, the 1.8 V outputs can no longer be supplied by the
DCDC and current will have to be provided by LDO's.
There are two methods for switching from DCDC to
LDO's, one based on hardware and one based on soft-
ware. Both modes use a special brown out, which sig-
nals that the battery voltage has dropped below 2.45 V
(+/- 50 mV) as a detection mechanism. This brown out
If automatic switching is disabled, software will have to
handle the appropriate settings for a low battery. In
order to alert the software to such a situation the DCDC
controller can generate an interrupt upon a brownout
event. The software can then handle all settings and it
can choose to either clear and/or mask the interrupt
(using the interrupt clear and interrupt mask registers
respectively). Note that the interrupt and automatic
Low Voltage mode settings are independent, so it is
possible to generate interrupts when automatic Low
Voltage mode is enabled.
has
to
be
enabled
by
setting
BOD_CTRL2_REG[BOD_VBAT_EN]=1. In hardware
mode, the DCDC controller will automatically disable
the 1.8 V outputs when this brownout occurs and it will
set the maximum current limits for the other outputs to
a lower value (which is programmable). It will assert an
internal signal that indicates that the converter is work-
ing in Low Voltage mode to signal that the 1.8 V LDO's
have to be enabled. This mode can only be disabled by
software in order to avoid the system oscillating
between High and Low Voltage modes when the bat-
tery voltage is close to the brownout threshold.
The respective LDOs should be switched on before
disabling the DCDC converter (i.e. just before entering
a sleep mode). Each power rail (except Vcont and
Vsys) is covered by both a DCDC output and an LDO.
To switch off the DCDC, the user must enable the
LDO_IO_RETx (if external components need to stay
powered). If Vradio is required on, then LDO_RADIO
should be activated as well.
4.1.4 PMU configurations in Sleep modes
The automatic Low Voltage mode can be fully disabled
by
Every power line can be supplied by either a DC-DC
output or an LDO. Only Vcont and Vsys is not powered
by a DC-DC output. There is quite a number of different
ways of configuring the PMU to supply the internal rails
as well as external devices, while in sleep mode,
depending on the load, the sleep time etc. For supply-
ing the Vsys rail a stable voltage level is needed hence
the LDO_VBAT_RET has to be used, a sample-and-
DCDC_CTRL_0_REG[DCDC_BROWNOUT_LV_MOD
E]=0. This also forces the converter back into High
Voltage mode once it is operating in Low Voltage mode
so when the battery voltage is once again sufficient the
software needs to clear and then set the aforemen-
tioned register field to switch back to High Voltage
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ever, there is one recommended configuration that cov-
Bluetooth Low Energy 4.2 SoC
hold type of LDO which samples the bandgap voltage
on a regular basis and regulates accordingly. The regu-
lar wake-up is based on the SLEEP_TIMER_REG
value.
ers all cases.
Vsys is powered by LDO_VBAT_RET, which is a sam-
ple and hold LDO, thus guaranteeing a stable voltage
on this rail. This enables connecting external compo-
The recommended power configuration is presented in
the following table:
nents
on
the
V33
pin
of
the
system.
SLEEP_TIMER_REG has to be programmed with a
value to trigger the period wakeup of the Bandgap.
This covers systems with external components on 1.8V
and/or 3.3V rails kept alive while the DA14681 is in
Extended Sleep mode.
Table 10: Sleep PMU configuration
Power
Power Configuration
Rail
Vcont
Vsys
always on powered by LDO_RET
LDO_VBAT_RET
4.1.5 Wake/Power up - Sleep Timing
There are two HW controlled FSMs which run at
power/wake up and when going to sleep as explained
in section 3.4.1 and section 3.4.2 respectively. Their
timing regarding the enabling/disabling of the various
resources of the PMU is explained in the following fig-
ures:
Vflash LDO_IO_RET
Vext LDO_IO_RET2
Vcore LDO_SLEEP
Vradio OFF
There are many ways of configuring the PMU, how-
Wake Up Process
Power Up
Wake Up
RC32 (31.2us)
RC16 untrimmed (~100ns)
RC16 trimmed (~60ns)
XTAL32K(30.5us) / RCX (95.2us)
CLK
Wake Up Event
Filter
WUP
Switch
to RC16
SLEEP
Start V33
Start VDD1V8P
Start VDD1V8
Start VDD_CORE
RUNNING SW...
HW FSM
LDO_VBAT_RET
LDO_IO_RET
LDO_IO2_RET
LDO_VBAT
HW
controlled
LDO_CORE
LDO_IO2
LDO_IO
RC16_Enable
DCDC_1V8
DCDC_1V8P
DCDC_1V2
SW
controlled
DCDC_1V4
Figure 17: Wake/Power-Up timing and PMU operations
In the case of powering up the system, the HW FSM as
depicted in Figure 3, enables the various LDOs while
being clocked by the RC32K. Each LDO requires a cer-
tain amount of time to settle depending on the load of
the power rail. The LDOs are ready within 12 clock
cycles (or 380 us) and then the clock is switched to the
RC16 which has not yet been trimmed, hence the fre-
quency is near 10 MHz.
the HW FSM operates at either the RCX or the
XTAL32K clock hence the actual frequency may vary
from 11.7 kHz to 32,768 kHz. The FSM filters the wake
up event at the first state (an interrupt coming from a
GPIO or an internal timer) and then it performs the
same steps as in the power up case. The only differ-
ence here is that the amount of time required for the
LDOs to settle might be less then before since the
sleep time might have been short enough to allow a
total discharge of the capacitances, internally as well
In the case of waking up from any of the sleep modes,
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chip into sleep), the clock is switched to the lp_clk
Bluetooth Low Energy 4.2 SoC
as externally. However, do the frequency variation the
wake up time might reach 1.2 ms if the RCX is used.
(RCX or XTAL32K) the retention LDOs are enabled
(LDO_VBAT_RET, LDO_IO_RET and LDO_IO_RET2)
and the core (VDD) voltage LDO is disabled so that the
LDO_sleep takes over. The actual amount of clock
cycles since the WFI is issued up to the point where
the lp_clk starts and the FSM changes state is 7.
Depending on wether a value has been programmed in
the SLEEP_TIMER_REG, the system is automatically
shorty waken up every so many ticks (lp_clk) to quickly
sample the bandgap voltage and get back to sleep.
The DC-DC and the LDO_VBAT_RET require a sam-
ple-and-hold operation, hence if these two elements
are not part of the sleep strategy, SLEEP_TIMER_REG
should be kept to 0. The overall FSM latency is 4 lp_clk
clock cycles
In both cases, as soon as the RC16 clock is enabled,
the FSM hands control to the CPU. The CPU will start
executing code from address 0x0. If it is a power up,
the BootROM code resides at address 0x0. If it is a
wake up, the RAM is remapped at address 0x0. The
actual application code is responsible for starting the
DC-DC
controller
by
setting
DCDC_CTRL_0_REG[DCDC_MODE]=Active. Further-
more, the respective rails might or might not be ena-
bled
by
respectively
programming
the
DCDC_<rail>_ENABLE_xV bits.
Preparing the system for any of the sleep modes,
requires that the application switches back the clock to
the RC16 and switches off the XTAL16M (see Figure
18). After executing the WFI command (which puts the
.
RC16 trimmed (~60ns)
XTAL32K(30.5us) / RCX (95.2us)
CLK
DCDC_MODE=Sleep
Goto Sleep
SLEEP
Clock ticks = SLEEP_TIMER
Disable
LDO_VBAT
RUNNING SW...
Start LDO_VBAT_RET
HW FSM
LDO_VBAT_RET
LDO_IO_RET
LDO_IO2_RET
LDO_VBAT
HW
controlled
LDO_CORE
LDO_IO
LDO_IO2
RC16_Enable
DCDC_1V8
DCDC_1V8P
DCDC_1V2
SW
controlled
DCDC_1V4
Figure 18: Goto Sleep timing and PMU operations
If the SLEEP_TIMER_REG is programmed to wake up
the system for rails charging (DCDC operation) and
bandgap sampling, then the timing of the HW FSM
looks as illustrated in Figure 19. The state machine is
clocked by the lp_clk and starts with enabling the
Bandgap. On the next state, it enables the RC16 clock
(WPS_CLK) and following that, a sampling of the
Brown Out Detection circuit on the various power rail
occurs (WPS_BOD). The sampling is performed with
the BOD_clk at 1 MHz (see Figure 27).
Next state is dedicated to the DCDC converter
(WPS_SIMO). This is when the charging of the differ-
ent power rails will happen if the DCDC is set at sleep
mode
by
programming
the
DCDC_CTRL_0_REG[DCDC_MODE] flag. During the
last 3 states the sampling and hold of the bandgap volt-
age
reference
occurs,
the
required
LDO_IO_RET
by
the
and
LDO_VBAT_RET,
LDO_IO_RET2.
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Charging of the DCDC rails as well as sample-and-hold
functionality of the LDOs are both displayed in Figure
19 to allow illustrating the waveform for all cases. In
reality, depending on the power configuration, only the
pre-defined resources will be part of the intermediate
wake up FSM.
Figure 19: SLEEP_TIMER based wake up timing
4.1.6 Charger
The charging circuit operates as a constant current/
constant voltage source. The control circuit keeps the
charge voltage or the charge current at the predefined
values (whichever of the two is reached first). The val-
ues
can
be
changed
via
register
CHARGER_CTRL1_REG.
The charge control circuit is initially supplied from pin
VBUS. The complete charging circuit is powered down,
when the VBUS voltage is low for more than 10 ms or
by setting bit CHARGER_CTRL1_REG[CHARGE_ON]
= 0. In a Li-ion application the charger is also disabled,
when the voltage on pin NTC is in the “too hot” or “too
cold” region.
Note that, the use of the charger requires P1_4 as a
power pin and P1_6 for controlling the NTC if required
(as shown in Figure 22).
Figure 20: Pre-Charge and Charge Voltage/Current
Diagram
Pre-Charging and Charging
The Charger circuitry supports a large range of current
levels for pre-charge and charging. If the range is
within 5 mA and 400 mA, then the respective level has
The Charger is supporting pre-charging and normal
charging as explained in the diagram bellow. The
charger starts at constant current mode (CC) to get the
battery voltage to the predefined voltage level. It then
switches to constant voltage mode and continues until
the current drops below the expected threshold indicat-
ing that the Battery has reached the charging limits.
to
be
programmed
in
the
CHARGER_CTRL1_REG[CHARGE_CUR] field. If the
range of pre-charge currents is between 0.2 mA and 15
mA
then
programming
the
CHARGER_CTRL2_REG[CHARGER_TEST]=0x6 in
addition to the CHARGER_CTRL1_REG is required.
This will divide the current level by ~27 hence produce
sub-miliamps levels.
The pre-charge and charge state machine as imple-
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mented in software is presented in the following flow
chart:
Charging Start
Charge Detection
Check ADC[VBAT
]
VBAT< VWEAK_BAT_THR
VBAT= VWEAK_BAT_THR
Set Timeout Timer
Configure Current for
TTH_TIMOUT
ICharge
Set VBAT sense Timer
TVBAT_SENSE
Set Status check Timer
TSTATUS_CHECK
Configure Current for
IPre_Charge
TSTATUS_CHECK did not
expire
T
STATUS_CHECK expired
Wait for TPROT_OVERSHOOT
Check BATTEMP field
Check ADC[VBAT
]
Check End of Charge field
VBAT= VWEAK_BAT_THR
Temperature ok and
not end of charge
VBAT< VWEAK_BAT_THR
Temperature out of
bounds or charge
ended
TTH_TIMOUT expired
TTH_TIMOUT did not
expire
Charging End
Figure 21: Pre-Charge and Charge SW FSM
The Charge detection is performed by HW according to
the “Battery Charging Specification, Rev 1.2, Decem-
ber 2010”. There are several timers used in this flow
chart as explained below:
status bits of the charging circuitry are checked:
CHARGER_STATUS_REG[END_OF_CHARGE]
and
CHARGER_STATUS_REG[CHARGER_BATTEMP_
OK]
• T
is the time-out threshold which stops the
TH_TIMOUT
V
is the voltage threshold below which,
pre-charging if voltage has not increased within a
certain time interval due to possibly a bad battery.
WEAK_BAT_THR
a battery is considered as “weak” as explained in the
BCS, Rev1.2 specification while I and I
the charging current limits configured as already
explained.
Charge
Pre_charge
• T
defines the period of checking the volt-
VBAT_SENSE
age level of the battery via the ADC channel. It is set
at 10 ms.
Auto shut-off
• T
defines a programmable interval
PROT_OVERSHOOT
The charger auto shut-off circuits for Li-ion/polymer
batteries automatically switches off the charger circuit,
when the NTC input voltage goes outside the specified
voltage ranges as shown in Figure 22.
to avoid sampling a wrong VBAT voltage right after
disabling a Battery protection IC. In these cases a
small overshoot might be observed which could trick
the sampling routine that battery is already charged,
hence the charging sequence would be terminated.
Default time is 10 ms.
The charge disable function will be activated, when the
voltage ratio (NTC voltage/P1_4 voltage) is below 1/2
(too hot) and above 7/8 (too cold).
• T
is the time period after which, the
STATUS_CHECK
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CHARGER_STATUS_REG[END_OF_CHARGE]. The
Bluetooth Low Energy 4.2 SoC
The Auto shut-off control and status bits can found in
registers
CHARGER_STATUS_REG.
CHARGER_CTR1_REG
and
charge cycle is not affected directly. This indicator can
be used by higher-level control to manipulate the
charge process.
R1 can be dimensioned as follows:
Cold battery protection can be switched-off indepen-
dently from the NTC_DISABLE control.
R1 = R
@Tcritical
NTC
E.g. if the NTC is 4.7 kat Tcritical = ~40 °C, R1 must
also be 4.7 k, charging will stop at the “too hot” limit.
The “too cold” temperature is not critical and will in
practice be around 0 °C.
Non-rechargeable batteries
A 3.74 V charge level is provided to test for non-
rechargeable NiMH batteries. For two NiMH batteries
the maximum charging voltage is expected to be 3.4 V.
When 3.74 V is selected and an ADC measurement
indicates a quick rise above the 3.4 V level, most likely
non-rechargeable batteries are present and the
charger must be disabled.
If the NTC auto shut-off feature is not required, bit
CHARGER_CTR1_REG[NTC_DISABLE] must be set
to ‘1’.
End Of Charge detection
This is an indicator when the charge current is
decreased to 10% of the programmed value and can
be
read
at
P1_4
NTC_LOW_DISABLE
R1
(10k)
1
7/8*VDD
1/2*VDD
‐
Too Cold
7/8
NTC/P1_6
+
Temperature ok
+
CHARGE Disable
NTC_DISABLE
1/2
‐
Too Hot
NTC
(10k)
GND
Figure 22: Charger auto shut-off circuit
4.1.7 Fuel gauge
The Fuel Gauge, State of Charge (SOC) circuit is used
to accurately determine the actual amount of charge
(Coulombs) in rechargeable batteries as well as the
discharge state of non-rechargeable batteries. This
information can be used as battery status indication to
the user.
Features
• Coulomb Counter fuel gauge with high accuracy
Sigma delta ADC 0.05% at 1A Max
• Integrates charge and discharge currents
• Measures average currents
• Offset cancelling by chopper amplifier
• Power saving mode with auto increment
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the time base for the 40 bits Fuel Gauge up/down
Bluetooth Low Energy 4.2 SoC
Architecture
counter. The chopper amplifier cancels any offset
before passing it to the SD ADC. The integrated value
is read via the SOC_CHARGE_CNTRx_REG (x=1,2,3)
and the average current via the 16 bits
SOC_CHARGE_AVG_REG (9 bit + sign + fractional).
The Fuel Gauge measures integrates the current
through the battery by measuring the voltage over a
0.1 (typical) external resistor or PCB wire using
SOCp and SOCn pins. Recommended settings will be
based on this resistor value.
All SOC_* registers can be read out via APB16 inter-
face.
During operation (charge or discharge) the SOC con-
tinuously integrates the voltage on SOCn/SOCp using
a Sigma Delta ADC and integrating counter which is
APB16
VBAT
SOC_CTRLx_REG
SOC_RESET_CHARGE
SOC_ADD2CH_REG
(Fuel Gauge)
SOCp
SOC_CHARGE_CNTRx_REG
SD Counter
Chopper
stage
SD ADC
(fs=1MHz)
0.1Ohm
SOCn
SOC_CHARGE_AVG_REG
Star-point
connection
(Average current)
DIVNX_CLK
Figure 23: State of charge (SOC) circuit block diagram
Operation (rechargeable battery)
At insertion of a new battery the MIN/MAX values of
the counter are unknown, so the above described cali-
bration procedure must be repeated.
Figure 24 shows the Fuel Gauge Hardware/Software
operation. The SOC_CHARGE_CNTRx_REG repre-
sents the actual amount of charge Q = I*t added or
subtracted from the battery after the counter is reset
with SOC_CTRL1_REG[SOC_RESET_CHARGE].
Power saving mode
For power saving the SOC analog part can be disabled
and the SOC_ADD2CH_REG will be used to decre-
ment the SOC_CHARGE_CNTRx_REG at the default
sample frequency of 1 MHz. The value of the
SOC_ADD2CH_REG can be determined from the
SOC_CHARGE_AVG_REG when not in power saving.
With the battery charger enabled, a fully charged bat-
tery
will
set
bit
At
CHARGER_STATUS_REG[END_OF_CHARGE].
this point the SOC counter can be reset, starting to
count down as soon as the battery is removed from the
charger. A local variable “full_charge” is determined
based on the battery capacity, aging and temperature
parameters. The actual battery voltage is determined
from a VBAT voltage measurement using the general
purpose ADC. At the lowest operational battery level,
the SOC_CHARGE_CNTRx_REG represents the bat-
tery capacity which will be negative at this point. The
Current charge = full_charge - SOC counter value.
Reversely, if the counter is reset at the lowest battery
voltage, the increasing counter represents the current
actual battery charge.
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Bluetooth Low Energy 4.2 SoC
SW
Aging &
Battery temperature
capacity compensation
full_charge
CHARGER_STATUS_REG
[END_OF_CHARGE] ==1
current_charge
SOC Analog
add
SOC_CHARGE_CNTRx_REG
++/--
SOC_CTRL1_REG
[SOC_RESET_CHARGE] =1
++/--
Used in power saving mode.
Represents charge when
SOC Analog is off
SOC_ADD2CH_REG
Measure once at low current
when not in power saving mode
SOC_CHARGE_AVG_REG
HW
Figure 24: Fuel Gauge operation
• Charger type detection: Dedicated Charging Port
4.1.8 USB charger detection
(DCP), Charging Downstream Port (CDP), Standard
Downstream Port, PS2 port and Proprietary charger
The USB controller has built-in hardware to determine
the charger type to which it is connected. Depending
on the charger type, battery state and USB connection
state a defined current can be drawn from the charger.
• Dead battery provision
• Compatible with various smartphone chargers
Features
• Complies to “Battery Charging Specification”
Revision V1.2 December 7, 2010 (BC1.2)
VBUS
CHARGE_STS
VBUS
VDM_SRC_ON
IDP_SRC
<0.25 V -> 0
>0.4 V -> 1
Charger
(0.6 V)
A)
(10
+
USB_DCP_DET
USB_DP_VAL
VDP_SRC_ON
VDM_SRC_ON
IDP_SRC_ON
<0.8 V -> 0
>1.5 V -> 1
VBUS
USBP
USBN
D+
D-
<0.8 V -> 0
>1.5 V -> 1
GND
USB_DM_VAL
GND
IDM_SINK_ON
IDP_SINK_ON
<0.25 V -> 0
>0.4 V -> 1
Receptacle
RDM_DWN
(15k)
USB_CHG_DET
A)
(100
VDP_SRC_ON
VSS
Figure 25: USB charger detection block diagram (BC1.2)
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The USB interface supports the battery charging with
the following hardware blocks as shown in Figure 25.
Table 11: USBP, USBN contact detection
• A voltage source of 0.6 V can be switched to USBP
or USBN with USB_CHARGER_CTRL_REG bits
VDP_SRC_ON resp. VDM_SRC_ON.
Port
USBP
USBN
USB_DP_VAL
Nothing
>1.5 V
0
1
• A current sink of 100 A can be switched to USBP or
USBN with USB_CHARGER_CTRL_REG bits
IDP_SINK_ON resp. IDM_SINK_ON. (Note that
internal logic prevents to both switches can be ena-
ble at the same time)
connected
Standard
down-
<0.8 V
0
0
stream
Dedicated <0.8 V
charger
<0.8 V
<0.8 V
0
0
• A current source I
bled with
USB_CHARGER_CTRL_REG[IDP_SRC_ON]
and R
can be ena-
DP_SRC
DM_DWN
Charging
down-
<0 .8 V
• A logic level Schmitt trigger for USBN, USBP read in
USB_CHARGER_STAT_REG bits
stream
USB_DM_VAL, resp. USB_DP_VAL logic level
(0: <0.8 V 1: >2 V)
Primary charger detection
Primary charger detection is used to detect whether
the downstream port has charging capabilities or not.
The detection is initiated by setting bits
• A comparator output CHG_DET read in
USB_CHARGER_STAT_REG[USB_CHG_DET] to
detect a level of 0.4 V < USBN < 1.5 V to indicate
that a DCP or CDP is connected.
USB_CHARGER_CTRL_REG[VDP_SRC_ON]
USB_CHARGER_CTRL_REG[IDM_SINK_ON]. This
enables the voltage source V on USBP and the
and
• A comparator output DCP_DET read in
USB_CHARGER_STAT_REG[USB_DCP_DET] to
detect a level of 0.4 V < USBP < 1.5 V to indicate
that a DCP is connected.
DP_SRC
current source I
on USBN. The measured lev-
DM_SINK
els on USBP and USBN shown in Table 12 determine
the value of bit
Initially all bits of USB_CHARGER_CTRL_REG must
be set to reset value ‘0’.
USB_CHARGER_STAT_REG[USB_CHG_DET].
Table 12: Charger type detection
The presence of VBUS can be checked by reading bit
ANA_STATUS_REG[VBUS_AVAILABLE].
Port
USBP USBN
USB_CHG_DET
Optionally, in case the receptacle's VBUS is connected
Dedicated 0.6 V
charger
>0.4 V
<1.5 V
1
to the CHARGE pin via
a
resistor, bit
BAT_STATUS_REG[CHARGE_STS] is set when
Vcharge > Vih_charge (1.5 V). This value meets the
VOTG_SESS_VLD value. With the keyboard interface
configured to detect a level change of the CHARGE
pin, bit KEY_STATUS_REG[0] is set and a KEYB_INT
is generated. Optionally, an accurate value of VBUS
can be determined with a resistor divider on VBUS to
VSS, connected to one of the general purpose ADC
inputs.
Charging 0.6 V
down-
stream
First
<0.25 V
Then 0.6 V 1 ms to 20 ms
0 (Note 1)
then 1 after
Standard
down-
stream
0.6 V
2 V
<0.25 V
2 V
0
0
PS2
Detection negotiation
Note 1: After 20 ms a valid comparator signal is found, after 40 ms
the comparator signal can be read in USB_CHG_DET.
When a downstream port drops VBUS, the bus will dis-
charge and ANA_STATUS_REG[VBUS_AVAILABLE]
goes to 0.
Note that when the charger detection is done before
the charging downstream port is enabled its V
DM_SRC
Contact detection
(so before 20 ms) a standard downstream port is
detected, which is safe but incorrect. After the
If USB_CHARGER_CTRL_REG[IDP_SRC_ON] is set,
bit USB_CHARGER_STAT_REG[USB_DP_VAL] indi-
cates that the data pins make contact (see Table 11).
V
has been enabled in the charging down-
DM_SRC
stream port, a charger port is detected.
It is the responsibility of the SW to wait until the USBN
and USBP contact bouncing has finished before the
register is read.
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Secondary charger detection
Table 15: Smartphone charger detection
Secondary charger detection can be used to distin-
guish a dedicated charger or a charging downstream
port. The detection is initiated by setting bits
USBP/
USBN
USB_DP_VAL / USB_DP_VAL2 /
Voltage
USB_DM_VAL
USB_DM_VAL2
2 V
1
0
>1.5 V
<2.3 V
USB_CHARGER_CTRL_REG[VDM_SRC_ON]
USB_CHARGER_CTRL_REG[IDP_SINK_ON]. This
enables and The difference
and
V
I
.
DM_SRC
DP_SINK
2.8 V
1
1
>2.5 V
between a DCP and a CDP is shown Table 13..
Table 13: Secondary charger detection
Port
USBP
USBN
USB_DCP_DET
Dedicated >0.4 V
0.6 V
1
charger
<1.5 V
Charging
down-
<0.25 V 0.6 V
0
stream
Finally V
shall be enabled as defined in the
DP_SRC
Good Battery Algorithm.
Interrupts
The charger detection hardware can operate in polling
mode or can generate a USB interrupt to the ARM Cor-
TM
tex
M0. A change in one of the bits [3:0] of register
sets bits
USB_CHARGER_STAT_REG,
USB_MAEV_REG[USB_CH_EV] if the corresponding
bits [7:4] are set to ‘1’. If USB_CHARGER_STAT_REG
is read, bit USB_CH_EV interrupt is cleared. The inter-
rupt “set” conditions have priority over the “clear” condi-
tion of the read access.
Once VBUS is inserted, CHARGE generates
a
KEYB_INT. A debounce timer for Contact Detection
and wait time to detect a standard downstream port
must be done by software polling or by using system
timer interrupts SWTIM_INT.
USB V1.1 compatibility
In USB V1.1 the integrated USBP and USBN resistors
were used for a dedicated charger detection. Although
not very convenient, these resistors can still be used to
force High/Low levels on the USB lines.
Smartphone charger detection
The battery charger detection circuit is able to detect
smartphone chargers with characteristics shown in
Table 14.
Table 14: Smartphone charger characteristics
USBP
2.0 V
2.0 V
2.8 V
2.8 V
USBN
2.0 V
2.8 V
2.0 V
2.8 V
Load current
up to 500 mA
up to 1 A
up to 2 A
Not defined
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Features
5
Reset
• RC spike filter on RST to suppress external spikes
(400 k2.8 pF)
The DA14681 comprises an RST pad which is active
HIGH. It contains an RC filter for spike suppression. It
also contains a 25 k pull-down resistor. The typical
latency of the RST pad is in the range of 2 s.
• Three different reset lines (SW, HW and POR)
• Power On Reset (POR) issued if voltage threshold
reached on VDD, VDD1v8 or V33 rails
Furthermore, a separate programmable Brown-Out
block will issue a Power On Reset (POR) upon voltage
reaching the minimum threshold on each of the three
main power rails of the system.
• Programmable POR voltage threshold for the VDD
rail in sleep (0.7V or 0.8V)
• Configurable POR enables for the VDD1v8 and the
VDD3v3 rails
AHB32
APB16
HW_RESET
DEBUGGER_ENABLE
(Only Debugger
can set this bit)
Debugger
SWD_RESET_REG
[SWD_HW_RESET_REQ]
SWDAP
SWDIO
SWDCLK
SYS_CTRL_REG[SW_RESET]
SW_RESET
ARM
AIRCR[SYSRESETREQ]
PAD_RESET
HW_RESET
RST
25k
WATCHDOG
WDOG_reset
NMI
Brown Out Detection
FSM
Digital Domain
VDD level sense
POR_RESET
BOD_CTRL_REG
BOD_CLK
Figure 26: Reset and Brown-Out block diagram
5.1 POR, HW AND SW RESET
• the SW reset which is triggered by application soft-
ware, writing the SYS_CTRL_REG[SW_RESET] bit,
the HW reset, and a special ARM command.
The Power On Reset (POR) signal is generated inter-
nally and will release the system’s flip-flops as soon as
the VDD voltage crosses the minimum threshold value
at 0.65 V and the Brown-Out Detection FSM senses
the various internal voltage levels to be higher than the
programmed thresholds as explained in section 5.2.
The POR resets everything in the chip.
The HW reset can also be automatically activated upon
waking up of the system from an Extended Sleep or
Deep
Sleep
mode
by
programming
bit
PMU_CTRL_REG[RESET_ON_WAKEUP]. The HW
reset will basically run the cold startup sequence and
the BootROM code will be executed.
There are two other main reset signals in the DA14681,
namely:
The SW reset is the logical OR of a signal from the
ARM CPU (triggered by writing SCB -> AIRCR =
0x05FA0004) and the SYS_CTRL_REG[SW_RESET]
bit. This is mainly used to reboot the system after the
base address has been remapped.
• the HW reset which is basically triggered by the RST
pad, the Watchdog expiration, the POR and the
debugger (by writting SWD_RESTET_REG)
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All registers are reset by POR, a few are not reset by
the HW reset signal, and even more are not reset by
the SW reset. These registers are listed in the following
table:
Table 16: Reset signals and registers
Reset by writing to the
SW_RESET bit only
Reset by POR only
Reset by HW reset
all DCDC_* registers
BANDGAP_REG
all QSPIC_* registers
all PLL_* registers
The rest of the register file
AON_SPARE_REG
all CACHE_* registers except
for CACHE_MRM_* registers
SYS_STAT_REG
All other OTPC_* registers
ANA_STATUS_REG
BLE_CNTL2_REG
BLE_EM_BASE_REG
BOD_STATUS_REG
DEBUG_REG.
DEBUGS_FREEZE_EN
OTPC_MODE_REG.MODE
OTPC_NWORDS_REG
OTPC_TIM1_REG
CLK_AMBA_REG[12:0]
CLK_FREQ_TRIM_REG
CLK_RADIO_REG
CLK_CTRL_REG
OTPC_TIM2_REG
PMU_CTRL_REG
SYS_CTRL_REG
CLK_32K_REG
CLK_16M_REG
CLK_RCX32K_REG
TRIM_CTRL_REG
BOD_CTRL_REG
BOD_CTRL2_REG
LDO_CTRL1_REG
LDO_CTRL2_REG
SLEEP_TIMER_REG
POWER_CTRL_REG
5.2 BROWN OUT DETECTION
issue a HW reset if the respective bits are set.
The DA14681 contains a brown out detection circuitry
which is based on sensing selected voltages in the chip
every clock cycle. If one of the voltages is found to be
below the pre-configured threshold, then a POR is
issued.
4. BOD_V18P: senses the VDD1V8P voltage. it
will issue a HW reset if the respective bits are
set.
5. BOD_V33: senses the V33 voltage. it will issue
a HW reset if the respective bits are set.
The BOD FSM is running on the BOD_clk which is 1
MHz coming from a fixed division of the RC16 clock by
16. The pulses generated for moving from one state to
another are 25% duty cycled, hence 250 kHz.
6. BOD_VBAT: senses the VBAT1 voltage. it will
not issue a HW reset. Instead, it will trigger the
DCDC_IRQ line as soon as the VBAT1 voltage
reaches 2.45V. The reason is to notify SW that
from this point and below, DCDC is not providing
better efficiency than the LDOs, hence SW
should switch the PMU operation to the
LDO_VBAT.
The threshold values for the comparison are config-
ured in the BOD_CTRL_REG. Issuing a POR upon
sensing a lower voltage than the pre-defined threshold
is
controlled
by
BOD_CTRL2_REG[BOD_RESET_EN]. Furthermore,
each sensed voltage can be masked out with use of
the BOD_CTRL2_REG enable bits. The FSM steps are
the following:
7. BOD_READY: The RC16 will be turned off dur-
ing this state and the state machine is set back
to BOD_IDLE.
During the extended sleep mode, the BOD FSM is only
triggered if the SLEEP_TIMER_REG is programmed
with a specific value different than zero. The timing is
explained in Figure 19 of section 4.
1. BOD_IDLE: idle state. It will proceed to the next
state when the system wakes up.
2. BOD_VDD: senses the VDD voltage. it will issue
a HW reset if the respective bits are set.
3. BOD_V18: senses the VDD1V8 voltage. it will
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6.1 CLOCK TREE
6
Clock generation
The generation of the system’s clocks is described in detail in the following figure:
Controlled by HW.
Automatically selects lp_clk
when Deep/Sleep Mode activated
Wake UP
Divide by
PCLK_DIV
APB Interfaces
ARM M0
CLK_AMBA_REG
[OTP_ENABLE]
OTP Controller
CLK_PER_REG
[IR_CLK_ENABLE]
IR Generator
CLK_PER_REG
[QUAD_ENABLE]
QUAD Decoder
CLK_AMBA_REG
[ECC_CLK_ENABLE]
ECC
AES/HASH
TRNG
CLK_AMBA_REG
[AES_CLK_ENABLE]
CLK_AMBA_REG
[TRNG_CLK_ENABLE]
Divide by
HCLK_DIV
ahb_clk
CLK_PER_REG[KBSCAN_CLK_SEL]
0
CLK_PER_REG[KBSCAN_ENABLE]
CLK_PER_REG[SPI_ENABLE]
Divide by
KEYB SCAN
SPI/SPI2
KBSCN_CLKDIV
1
CLK_PER_REG[SPI_CLK_SEL]
0
Divide by
SPI_CLK
1
CLK_PER_REG[I2C_CLK_SEL]
0
CLK_PER_REG[I2C_ENABLE]
CLK_PER_REG[UART_ENABLE]
I2C/I2C2
1
UART/UART2
CLK_PER_REG[ADC_SEL_SEL]
0
ADC
SOC
1
Divide by
16 (fixed)
Divide by
SRC_DIV
SRC
PDM
Divide by
PDM_DIV
0
PCM_DIV_REG[CLK_PCM_EN]
Divide by
PCM_DIV
PCM/I2S
CLK_AMBA_REG[QSPI_ENABLE]
Divide by
1
PCM_DIV_REG[PCM_SEC_SEL]
QSPI Controller
WDOG Timer
Breath Timer
QSPI_DIV
CLK_CTRL_REG[RUNNING_AT_32K]
Divide by
32 (fixed)
1
0
Divide by 214
CLK_TMR_REG[TMR0_ENABLE]
TIMER0_CTRL_REG[TIM0_CLK_SEL]
0
CLK_TMR_REG[TMR0_CLK_SEL]
CLK_TMR_REG
0
Divide by
TMR0_DIV
[TMR0_ENABLE]
1
RC32K
OSC
Timer0
Timer1
1
0
CAPTIM_CTRL_REG[CAPTIM_SYS_CLK_EN]
0
CLK_TMR_REG
[TMR1_ENABLE]
0
1
2
RCX
OSC
CLK_TMR_REG[TMR1_CLK_SEL]
0
1
Lp_clk
Divide by
TMR1_DIV
1
XTAL32K
OSC
3
CLK_TMR_REG[TMR2_ENABLE]
CLK_CTRL_REG[USB_CLK_SRC]
Divide by
TMR2_DIV
Timer2
1
CLK_CTRL_REG[CLK32K_SOURCE]
ahb_clk
1
CLK_TMR_REG[TMR2_CLK_SEL]
USB Controller
Divide by
2 (fixed)
0
0
CLK_RADIO_REG[BLE_ENABLE]
CLK_RADIO_REG[RFCU_ENABLE]
Divide by
BLE_DIV
PLL96M
Div by
2
1
BLE Core
2
CLK_CTRL_REG[PLL_DIV2]
sys_clk
3
1
0
RC16M
OSC
Divide by
RFCU_DIV
Digital PHY/
Coex
divN_clk
XTALOSC
16M
DivN
CLK_CTRL_REG[SYS_CLK_SEL]
Automatically adopts the division if PLL
or XTAL16M is used.
RF_ADC_div
Analog PHY
DCDC
BOD
Divide by
16 (fixed)
Figure 27: Clock tree diagram
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trimmed by two on-chip variable capacitor banks. Both
Bluetooth Low Energy 4.2 SoC
The diagram depicts the possible clock sources as well
as all different divisions and multiplexing paths towards
the generation of each block’s clock. Furthermore, the
required registers that have to be programmed are also
designated on the same diagram.
capacitor banks are controlled by the same register.
The capacitance of both variable capacitor banks var-
ies from minimum to maximum value in 2048 equal
steps. With CLK_FREQ_TRIM_REG = 0x000 the max-
imum capacitance and thus the minimum frequency is
selected. With CLK_FREQ_TRIM_REG = 0x7FF the
minimum capacitance and thus the maximum fre-
quency is selected.
There are some main clock lines which are of interest:
• lp_clk (black bold line): this is the low power clock
used for the sleep modes and can only be either the
RCX, the RC32K or the XTAL32K.
The
eight
least
significant
bits
of
• sys_clk (green line): this is the system clock, used
for the AMBA clock (hclk) which runs the CPU the
memories and the bus. This clock sources can be
any oscillator, the PLL or even an externally supplied
digital clock.
CLK_FREQ_TRIM_REG directly control eight binary
weighted capacitors, as shown in Figure 29. The three
most significant bits are decoded according to Table
17. Each of the seven outputs of the decoder controls a
capacitor (value is 256 times the value of the smallest
capacitor).
• divn_clk (red line): this is a clock which automatically
adjusts the division factor on the sys_clk to always
generate 16 MHz. This enables the dynamic activa-
tion of the PLL to provide more processing power at
the CPU, without affecting the operation of blocks
designed for 16 MHz.
CLK_FREQ_TRIM_REG
10
9
8
7
6
...
1
0
Decoding
3 --> 7
6.2 CRYSTAL OSCILLATORS
The Digital Controlled Xtal Oscillator (DXCO) is a
Pierce configured type of oscillator designed for low
power consumption and high stability. There are two
such crystal oscillators in the system, one at 16 MHz
(XTAL16M) and a second at 32.768 kHz (XTAL32K).
The 32.768 kHz oscillator has no trimming capabilities
and is used as the clock of the Extended/Deep Sleep
modes. The 16 MHz oscillator can be trimmed.
...
...
3.2 pF
...
3.2 pF
1.6 pF
27 fF 13 fF
The principle schematic of the two oscillators is shown
in Figure 28: below. No external components are
required other than the crystal itself. If the crystal has a
case connection, it is advised to connect the case to
ground.
Figure 29: Frequency trimming
Table 17: CLK_FREQ_TRIM_REG Decoding 3 --> 7
Input[2:0] Output[6:0]
2
1
0
0
1
1
0
0
1
1
0
6
0
0
0
0
0
0
0
1
5
0
0
0
0
0
0
1
1
4
0
0
0
0
0
1
1
1
3
0
0
0
0
1
1
1
1
2
0
0
0
1
1
1
1
1
1
0
0
1
1
1
1
1
1
0
1
1
1
1
1
1
1
1
16 MHz
32.768 kHz
0
0
0
0
1
1
1
1
0
1
0
1
0
1
0
1
0-22.4 pF
clock16MHz
clock32kHz
6.2.2 Automated trimming and settling notification
Figure 28: Crystal oscillator circuits
There is provision in the DA14681 for automating the
actual trimming of the 16 MHz crystal oscillator. This is
a special hardware block that realizes the XTAL trim-
ming in a single step. Notification about the XTAL oscil-
lator being settled after applying the trim value is also
6.2.1 Frequency control (16 MHz crystal)
Register CLK_FREQ_TRIM_REG controls the trim-
ming of the 16 MHz crystal oscillator. The frequency is
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and signalling that the oscillator is settled is described
Bluetooth Low Energy 4.2 SoC
provided in form of an interrupt, namely the
xtal16rdy_irq line.
in the following figure:
The automated mechanism for applying the trim value
Power up: RC32
Wake up: LP_CLK
Loads from
XTALRDY_CTRL_REG and
counting down...
XTAL16M_EN
XTAL_RDY_CNT
(8 bits)
0
0
2
1
XTAL16RDY_IRQ is always
asserted when XTAL_RDY_CNT
reaches 1
XTAL16RDY_IRQ
XTAL16MHz
Start Up Time
Settling Time
XTAL16_CLK_CNT
(10 bits)
XTAL_COUNT_N‐1
Counting ...
XTAL16_OK
(Analog)
HW applies the trim value (TRIM_CTRL_REG)
when:
‐ either XTAL16_CLK_CNT reaches defined
threshold (XTAL_COUNT_N))
‐ or XTAL16_OK signal is high
The selection of the mechanism is configurable
by XTAL_TRIM_SELECT
XTALRDY_STAT_REG
(8 bits)
XTAL_RDY_CNT old value
XTAL_RDY_CNT current value
On XTAL16_OK rising edge,
XTAL_RDY_CNT value is stored here!
Figure 30: Automated mechanism for XTAL16M trim and settling
The XTALRDY_IRQ is always triggered as soon as an
internal counter reaches the value 1 counting down
ter current value (XTAL_RDY_CNT) is stored in a
shadow register XTALRDY_STAT_REG. Note that, this
register keeps the previous value and will not be reset
unless a HW reset occurs.
from
starting
value
programmed
at
XTALRDY_CTRL_REG. This counter runs on the
RC32 clock if the system is powering up, or the sleep
clock if the system is waking up. Enabling of the
XTAL16M oscillator is done by HW. There are two
intervals until the interrupt notifies the CPU that the
XTAL16 can be used:
The settling section usually takes not more than 5 to 10
clock cycles. Using the above, fine tuning and reducing
the XTAL16 settling latency is feasible.
The XTAL16_TRIM_READY bit indicates that the trim-
ming process is done. This bit is reset after the XTAL16
oscillator is disabled (turning off the system power
domain) if XTAL_TRIM_SELECT= 00 or 01.
• The Start-Up, where the XTAL16M oscillator is
slowly converging towards the initial frequency of the
crystal. This section ends with the application of the
trim value to achieve a <50ppm, 16 MHz clock.
6.3 RC OSCILLATORS
• The Settling, where the oscillator settles to the pre-
ferred frequency after the application of the trim
value
There are 3 RC oscillators in the DA14681: one provid-
ing 16 MHz (RC16M), one providing 32 kHz (RC32K)
and one providing a frequency in the range of 11.7 kHz
(RCX).
There are two ways of deciding when the start-up sec-
tion ends. This decision is controlled by
TRIM_CTRL_REG[XTAL_TRIM_SELECT] bitfield:
The 16 MHz RC oscillator is powered by the Digital
LDO i.e. the VDD = 1.2 V which is available for the core
logic during Active or Sleep Mode. The output clock is
significantly slower than 16 MHz if untrimmed and is
used to clock the CPU and the digital part of the chip
during power up or wake up, while the XTAL16M oscil-
lator is settling.
• Use an analog filter which asserts an internal signal
(XTAL16_OK)
• Use a digital counter which counts
TRIM_CTRL_REG[XTAL_COUNT_N] number of
XTAL16M clocks
The simple RC oscillator (RC32K) operates on
VDD = 1.2 V and provides 32 kHz. The main usage of
the RC32K oscillator is for internal clocking during
In any case, the trim value is applied by HW. At the ris-
ing edge of the XTAL16_OK signal, the interrupt coun-
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power up or startup. It clocks the HW state machine
which brings up the power management system of the
chip.
The enhanced RC oscillator (RCX) provides a stable
11.7 kHz. The RCX oscillator can be used to replace
the 32.768 kHz crystal, since it has a precision of
< 500 ppm, while its output frequency is quite stable
over temperature.
6.3.1 Frequency calibration
The output frequency of the 32 kHz crystal oscillator
and the three RC-oscillators can be measured relative
to the DivN clock using the on-chip reference counter.
The measurement procedure is as follows:
• REF_CNT_VAL = N (the higher N, the more accu-
rate and longer the calibration will be)
• CLK_REF_SEL_REG[REF_CLK_SEL] = 0 (RC32K)
or CLK_REF_SEL_REG[REF_CLK_SEL] = 1
(RC16M) or CLK_REF_SEL_REG[REF_CLK_SEL]
= 2 (XTAL32) or
CLK_REF_SEL_REG[REF_CLK_SEL] = 3 (RCX)
• CLK_REF_SEL_REG[REF_CAL_START] = 1 Start
the calibration
• Wait until CLK_REF_SEL_REG[REF_CAL_START]
= 0
• Read CLK_REF_VAL_H_REG and
CLK_REF_VAL_H_REG = M (32-bits values)
• Frequency = (N/M) * 16 MHz
In the case of using the RCX as a sleep clock, the fre-
quency calibration should be implemented on each
active time of a connection interval to guarantee cor-
rect operation.
6.4 PLL
This low power PLL multiplies the XTAL16M clock to
produce a 96 MHz clock with 1% precision within a few
us reaching 200 ppm precision in 30 us.
Changing the system’s clock in to the PLL output can
be done dynamically without affecting the operation of
the chip. Its main purpose is to:
• Provide a divided by 2, 48 MHz required for the
operation of the USB Controller
• Provide more processing power to the CPU, ena-
bling 80 dMIPS, for computational hungry applica-
tions
This PLL dissipates 1.2 mA when operating at 96 MHz
while the leakage current can reach 1 uA when the PLL
is disabled.
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avoids the overhead of switching between two instruc-
Bluetooth Low Energy 4.2 SoC
7
ARM Cortex M0
tion sets.
The Cortex-M0 processor is a 32-bit Reduced Instruc-
tion Set Computing (RISC) processor with a von Neu-
mann architecture (single bus interface). It uses an
instruction set called Thumb, which was first supported
in the ARM7TDMI processor; however, several newer
instructions from the ARMv6 architecture and a few
instructions from the Thumb-2 technology are also
included. Thumb-2 technology extended the previous
Thumb instruction set to allow all operations to be car-
ried out in one CPU state. The instruction set in
Thumb-2 includes both 16-bit and 32-bit instructions;
most instructions generated by the C compiler use the
16-bit instructions, and the 32-bit instructions are used
when the 16-bit version cannot carry out the required
operations. This results in high code density and
In total, the Cortex-M0 processor supports only 56
base instructions, although some instructions can have
more than one form. Although the instruction set is
small, the Cortex-M0 processor is highly capable
because the Thumb instruction set is highly optimized.
Academically, the Cortex-M0 processor is classified as
load-store architecture, as it has separate instructions
for reading and writing to memory, and instructions for
arithmetic or logical operations that use registers.
A simplified block diagram of the Cortex-M0 is shown
in Figure 31.
Power Management
Interface
Interrupt Request
and NMI
Connection to
Debugger
WakeUp Interrupt Controller
(WIC)
Serial-Wire
Debug Interface
Nested Vector
Interrupt
Controller
(NVIC)
Processor
Core
Debug
Subsystem
Internal Bus System
AHB Lite bus interface unit
Memory and Peripherals
Figure 31: ARM Cortex M0 Block Diagram
• The design is configured to respond to exceptions
Features
(e.g. interrupts) as soon as possible (minimum 16
clock cycles).
• Thumb instruction set. Highly efficient, high code
density and able to execute all Thumb instructions
from the ARM7TDMI processor.
• Non maskable interrupt (NMI) input for safety critical
systems.
• High performance. Up to 0.9 DMIPS/MHz (Dhrys-
tone 2.1) with fast multiplier.
• Easy to use and C friendly. There are only two
modes (Thread mode and Handler mode). The
whole application, including exception handlers, can
be written in C without any assembler.
• Built-in Nested Vectored Interrupt Controller (NVIC).
This makes interrupt configuration and coding of
exception handlers easy. When an interrupt request
is taken, the corresponding interrupt handler is exe-
cuted automatically without the need to determine
the exception vector in software.
• Built-in System Tick timer for OS support. A 24-bit
timer with a dedicated exception type is included in
the architecture, which the OS can use as a tick
timer or as a general timer in other applications with-
out an OS.
• Interrupts can have four different programmable pri-
ority levels. The NVIC automatically handles nested
interrupts.
• SuperVisor Call (SVC) instruction with a dedicated
SVC exception and PendSV (Pendable SuperVisor
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service) to support various operations in an embed-
ded OS.
7.1 SYSTEM TIMER (SYSTICK)
The Cortex-M0 System Timer (SysTick) can be config-
ured for using 2 different clocks. The SysTick Control &
Status (STCSR) register specifies which clock should
be used by the counter.
• Architecturally defined sleep modes and instructions
to enter sleep. The sleep features allow power con-
sumption to be reduced dramatically. Defining sleep
modes as an architectural feature makes porting of
software easier because sleep is entered by a spe-
cific instruction rather than implementation defined
control registers.
STCSR[CLKSOURCE]=0; use the (fixed) external ref-
erence clock STCLKEN of 1 MHz.
STCSR[CLKSOURCE]=1; use the (HCLK_DIV
dependent) processor clock SCLK (e.g. 2, 4, 8 or 16
MHz).
• Fault handling exception to catch various sources of
errors in the system.
The default SysTick Timer configuration will be using
the (fixed) external reference clock STCLKEN
(STCSR[CLKSOURCE]=0). When necessary, higher
clock frequencies can be used with STCSR[CLK-
SOURCE]=1 but the software should take the
HCLK_DIV dependent core clock SCLK into account
w.r.t. the timing.
• Support for 32 interrupts.
• Little endian memory support.
• Wake up Interrupt Controller (WIC) to allow the pro-
cessor to be powered down during sleep, while still
allowing interrupt sources to wake up the system.
• Halt mode debug. Allows the processor activity to
stop completely so that register values can be
accessed and modified. No overhead in code size
and stack memory size.
7.2 WAKEUP INTERRUPT CONTROLLER
The Wakeup Interrupt Controller (WIC) is a peripheral
that can detect an interrupt and wake the processor
from deep sleep mode. The WIC is enabled only when
the DEEPSLEEP bit in the SCR is set to 1 (see System
Control Register on page 4-16 of the Cortex-M0 User
Guide Reference Material).
• CoreSight technology. Allows memories and periph-
erals to be accessed from the debugger without halt-
ing the processor.
• Supports Serial Wire Debug (SWD) connections.
The serial wire debug protocol can handle the same
debug features as the JTAG, but it only requires two
wires and is already supported by a number of
debug solutions from various tools vendors.
The WIC is not programmable, and does not have any
registers or user interface. It operates entirely from
hardware signals. When the WIC is enabled and the
processor enters deep sleep mode, the power man-
agement unit in the system can power down most of
the Cortex-M0 processor. This has the side effect of
stopping the SysTick timer. When the WIC receives an
interrupt, it takes a number of clock cycles to wakeup
the processor and restore its state, before it can pro-
cess the interrupt. This means interrupt latency is
increased in Deep Sleep mode.
• Four (4) hardware breakpoints and two (2) watch
points.
• Breakpoint instruction support for an unlimited num-
ber of software breakpoints.
• Programmer’s model similar to the ARM7TDMI pro-
cessor. Most existing Thumb code for the
7.3 REFERENCE
ARM7TDMI processor can be reused. This also
makes it easy for ARM7TDMI users, as there is no
need to learn a new instruction set.
For more information on the ARM Cortex M0, see a.o.
the ARM documents listed in Table 18.
Table 18: ARM documents list
Document title
ARM Document number
1
2
3
Cortex™-M0 User Guide Reference Material
Cortex™-M0 r0p0 Technical Reference Manual
ARMv6-M Architecture Reference Manual
ARM DUI 0467B (available on the ARM website)
ARM DDI 0432C (available on the ARM website)
ARM DDI 0419C (can be downloaded by registered
ARM customers)
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7.4 INTERRUPTS
This section lists all 32 interrupt lines, except the NMI
interrupt, and describes their source and functionality.
The overview of the interrupts is illustrated in the fol-
lowing table:
Table 19: Interrupt list
IRQ
number
(inherent
priority)
IRQ name
Description
0
1
ble_wakeup_lp_irq
ble_gen_irq
Wakeup from Extended Sleep by BLE
BLE Interrupt. Sources:
- finergtim_irq: Fine Target Timer interrupt generated when Fine Target
timer expired. Timer resolution is 625μs base time reference
- grosstgtim_irq: Gross Target Timer interrupt generated when Gross Tar-
get timer expired. Timer resolution is 16 times 625μs base time reference
- cscnt_irq: 625μs base time reference interrupt, available in active
modes
- slp_irq: End of Sleep mode interrupt
- error_irq: Error interrupt, generated when undesired behavior or bad
programming occurs in the BLE Core
- rx_irq: Receipt interrupt at the end of each received packets
- event_irq: End of Advertising / Scanning / Connection events interrupt
- crypt_irq: Encryption / Decryption interrupt, generated either when AES
and/or CCM processing is finished
- sw_irq: SW triggered interrupt, generated on SW request
2
3
4
5
6
RESERVED
RESERVED
rfcal_irq
RF Calibration Interrupt. Generated by the DPHY.
RESERVED
crypto_irq
Crypto interrupt. Sources:
- aes_hash_irq: AES or HASH function interrupt.
- ecc_irq: Elliptic Curve interrupt.
7
mrm_irq
uart_irq
Cache Miss Rate Monitor interrupt.
uart interrupt.
8
9
uart2_irq
i2c_irq
uart2 interrupt.
10
11
12
13
14
15
16
17
I2C interrupt.
i2c2_irq
spi_irq
I2C2 interrupt.
SPI interrupt.
spi2_irq
adc_irq
SPI2 interrupt.
ADC interrupt.
keybrd_irq
irgen_irq
wkup_gpio_irq
Keyboard scanner interrupt.
IR generator interrupt.
Wakeup or GPIO interrupt. Will be triggered in Deep Sleep or Hibernation
modes (clock-less).
18
19
20
21
22
23
swtim0_irq
swtim1_irq
quadec_irq
usb_irq
Timer0 interrupt.
Timer1 interrupt.
Quadrature decoder interrupt.
USB controller interrupt.
PCM interrupt.
pcm_irq
src_in_irq
Sample rate converter input interrupt.
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Table 19: Interrupt list
IRQ
number
(inherent
IRQ name
Description
priority)
24
25
src_out_irq
vbus_irq
Sample rate converter output interrupt.
VBUS presence interrupt. This interrupt requires a clock to be generated.
It will not be issued in clock-less power modes.
26
27
28
29
30
dma_irq
DMA interrupt.
rf_diag_irq
trng_irq
Baseband or Radio diagnostics Interrupt.
True random number generator interrupt.
DCDC timeout interrupt.
dcdc_irq
xtal16rdy_irq
XTAL16 oscillator ready interrupt. Clock is 16MHz (<50ppm) and 60/40 %
duty cycle
31
RESERVED
Interrupt priorities are programmable by the ARM Cor-
tex M0. The lower the priority number, the higher the
priority level. The priority level is stored in a byte-wide
register, which is set to 0x0 at reset. Interrupts with the
same priority level follow a fixed priority order using the
interrupt number listed in Table 19 (lower interrupt
number has higher priority level).
To access the Cortex-M0 NVIC registers, CMSIS func-
tions can be used. The input parameter IRQn of the
CMSIS NVIC access functions is the IRQ number. This
can be the IRQ number or (more convenient) the corre-
sponding IRQ name listed in Table 19. The corre-
sponding interrupt handler name in the vector table for
IRQ#15 is e.g. UART_Handler. For more information
on the ARM Cortex M0 interrupts and the correspond-
ing CMSIS functions, see a.o. section 4.2 Nested Vec-
tored Interrupt Controller on pag. 4-3 in the Cortex™-
M0 User Guide Reference Material.
The Watchdog interrupt is connected to the NMI input
of the processor.
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Features
8
Cache Controller
• Cachable range up-to 32 Mbyte starting from QSPI
start address, length adjustable up-to N*64kByte
The cache controller is used to accelerate the system
performance of the Arm Cortex-M0 executing from
QSPI FLASH and to reduce the power consumption by
reducing the access of the QSPI FLASH. The cache
dynamically loads both program and data code into the
cache Data RAM and executes from there.
• Cache size fixed 16 kB, TAG RAM size is 4 kB
• Run time configurable cache line 8, 16 or 32 bytes
• Run time configurable 1, 2 or 4 way associativity
• Built-in TAG memory invalidation (FLUSH)
The cache controller is controlled via the
CACHE_*_REGs. The cache administration is kept in
TAG memory. This memory can be invalidated by
asserting the FLUSH bit in the CACHE_CTRL1_REG.
The Arm Cortex-M0 is halted during this invalidation
and resumes automatically. N-way associative replace-
ment strategy is base on the value of a pseudo random
LFSR.
• Random number (LFSR) for 2, 4 way replacement
strategy
• Cache Data and TAG monitoring
• Instruction and Data caching upon read access, no
write path to cache available.
• Bypass mode
The cache controller supports run time configuration of
cache line size and associativity. The selection of the
configurations depends on the code type and applica-
tion and shall be determined empirically.
• Cache internal latency
• zero wait cycle for cache hits same cache line
• one wait cycle for cache hits when changing
cache line
For debugging purposes the Data and TAG memory
can be monitored on the AHB-SYS bus (See memory
map).
• 4 + cache line size/4 cycles for cache misses
• 0 cycle in transparent bypass mode
The cache is used for dynamic code and data caching.
As an alternative for fast code executions, the data-
RAM can be used for static code storage. This code
must be copied from QSPI FLASH.
AHB‐SYS
Cache
TAG
RAM
LFSR
Replacement
vector
Cache
Data
RAM
CACHE_LEN
CACHE_LEN
Cache Core
AHB ‐CPU
AHB light
Arm
Remap
REMAP_ADR0
CACHE_*_REG
APB‐16
Figure 32: Cache controller block diagram
8.1 CACHABLE RANGE
bypass mode. The bypass mode can be forced for all
addresses by setting CACHERAM_MUX =0.
The cache controller caches address range 0-
0x1FFFFFFF (32 MB). If REMAP_ADR0=0x1 or 0x2,
all addresses from 0 to CACHE_LEN will be cached,
else the cache controller automatically asserts the
Note that the CACHE_LEN setting is only applicable
for the QSPI FLASH remap case.
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8.2 RUNTIME RECONFIGURATION
8.2.1 Cache Line reconfiguration
Associativity and cache line size of cache can be
The dynamic configuration of the cache line size uses
a physical line size of 8 bytes. When the cache line
size is defined as 16 bytes or 32 bytes, 2 or 4 physical
lines are involved.
reconfigured
CACHE_ASSOCCFG_REG
at
all
time
by
writing
the
or
CACHE_LNSIZECFG_REG registers. Reconfiguration
is done without wait state and without flushing the
cache. All the data available in the cache memory are
kept except when the associativity is reduced (4-way ->
2-way and 2-way -> 1-way). In that case typically half
of the data are unaccessible.
Reconfiguration of the cache line occurs only when
lines are replaced. Even if the cache line configuration
is set to 32 bytes, cache lines of 16 bytes may remain
in the cache memory as explained at the example in
Table 20.
Table 20: Cache line size reconfiguration example
Step1:
Step 2:
Step 3:
Cache line size = 16 bytes
a. CPU Reads @0x00: Miss a. CPU Reads @0x00: Hit
Cache Reads 16 bytes in
Block 0 @0x00
Cache line size = 32 bytes
Cache line size = 32 bytes
a. CPU Reads @0x6000: Miss
Cache reads 32 bytes in
b. CPU Reads @5010: Hit
c. CPU Reads @5020: Miss Block 6 @0x00
b. CPU Reads @5010: Miss Cache reads 32 bytes in
Cache Reads 16 bytes in
Block 5 @0x10
Block 5 @0x20
16-byte cache lines already in
the cache are replaced by the
32-byte cache line.
Although the configuration
is 32 bytes, the lines of 16
bytes remain in the cache.
Only new lines are 32 bytes.
8.2.2 TAG memory word
8.3 2 AND 4 WAY REPLACEMENT STRATEGY
The cache controller fills each line of the cache first
starting from way0 to way3. When a line is completely
full, a new way_x victim is chosen in a pseudo random
way.
The administration memory word decoding is pre-
sented in Table 21:
Table 21: TAG memory layout
When a replacement is required, the cache controller
reads the value generated by a pseudo-random num-
ber generated to select which way to replace.
Bit 23
Bits 22:2
Bits 1:0
0
AHB
address
00: invalid cache line
01: 8 valid bytes
10: 16 valid bytes
11: 32 valid bytes
The pseudo-random number generator is realized
using a Linear Feedback Shift Register (LFSR).
8.4 CACHE RESETS
8.2.3 Associativity reconfiguration
The cache controller has two reset signals connected:
To enable associativity reconfiguration, the cache
memory is organized into four banks.
• The HW_RESET. When this reset is activated, all
cache logic and registers are reset to their default
values, while all data in the TAG memories are
cleared and all CACHE_*_REG are set to their reset
values. It takes around 450 AHB cycles to clear the
cache TAG memory.
Depending on the associativity, the four banks can
operate as 4-way, or be concatenated resulting in
either a 2-way or 1-way cache.
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If a fetch request occurs during this reset period, the
request will be taken into account at the end of the
reset and wait-states will be inserted.
data from the FLASH is:
= 2+8+4+(16*2)+1=47 clock cycles.
T
RDFL
An overview of the cache miss latency calculation is
shown in Table 22:
• The SW_RESET. Upon a SW_RESET the cache
state machine and TAG memories are reset, but the
CACHE_*_REG are not affected and will remain as
programmed.
Table 22: QSPI FLASH cache miss latency
Time
8.5 CACHE MISS RATE MONITOR
The DA14681 incorporates a cache miss monitoring
circuitry which is providing real time information on the
number of cache misses within a certain amount of
time. Upon reaching a programmable threshold, an
interrupt is issued towards the CPU to take action. The
CPU can dynamically change the cache line size, the
associativity or start the PLL to decrease cache line
fetch time and consequently power. It can even apply a
combination of the aforementioned techniques to
adjust system's parameters accordingly. This block
only operates while the system is in active mode. Main
features are:
Clock Cycles
Example
Interval
T
T
T
3
2
3
CM2R
R2QA
RDFL
2
T
+T
+T
+
47
CMD ADDR DUM
(N
*2)+T
PIPE
CACHELINE
T
4
4
CLAT
T
for 16 bytes cache line
(QPI mode)
56
CML
• Up to 10 ms active time interval counter
• Registered amount of cache misses
• Registered amount of cache hits
The same calculation applies for the OTP cached case
(Table 23):
• Programmable threshold of cache misses upon
which, an interrupt is generated
Table 23: OTP cache miss latency
Time
CACHE_MRM_HITS_REG contains the amount of
cache hits and CACHE_MRM_MISSES_REG the
amount of misses counted within the time interval pro-
grammed at CACHE_MRM_TINT_REG in CPU clock
cycles.
Clock Cycles
Example
Interval
T
T
T
T
T
3
2
3
CM2R
OTP_INIT
RDOTP
CLAT
2
N
4
/4
4
CACHELINE
8.6 CACHE MISS LATENCY AND POWER
4
This section describes the amount of time (in clock
cycles) required from a cache miss up to the point the
required code/data are fetched back to the CPU and
execution continues.
for 16 bytes cache line
13
CML
The T
parameter represents the amount of
OTP_INIT
The cache miss latency (T
lowing intervals:
) can be split in the fol-
CML
cycles required for initiating the burst read of the mem-
ory.
T
: Time from the cache miss up to request from
CM2R
Especially in the case of the QSPI FLASH, the amount
of cache misses, the latency and the FLASH device
might affect the power of the application since the
FLASH has to be activated for long time intervals.
However, it is measured that given a low cache miss
rate, the average power is not dramatically increased.
Figure 33 illustrates the current overhead as a result of
the cache miss rate.
the QSPI Controller.
T
T
T
: Time from request up to actual access start.
: Time for reading data from the FLASH.
R2QA
RDFL
: Time required to get data to the CPU (cache
CLAT
latency).
The final amount of clock cycles is calculated by the
following equation:
T
=T
+T
+T
+T
CML CM2R R2QA RDFL CLAT
where T
depends on the amount of data requested
RDFL
and is provided by the following formula:
T
= T +T +T +(N
*2)+T
PIPE
RDFL
CMD ADDR DUM
CACHELINE
For example, give a cache line configuration of 16
bytes, the amount of clock cycles required to read the
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Figure 33: Current dissipation overhead due to cache miss rate (at 3V)
The average increase on an application using a
FLASH device powered by the VDD1V8 pin (1.8V),
with 5mA read current, is becoming visible (i.e. <1mA)
if the miss rate exceeds 40%. For applications that are
periodically repeating activities, the expected miss rate
should be <5% hence the power overhead is minimum.
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Features
9
AMBA Bus
• Enables data transfers from peripherals to memory
while executing code from OTP or external QSPI
FLASH
The DA14681 is equipped with a multi-layer AMBA bus
which enables parallel data paths between different
masters and slaves. The bus matrix comprises 2 main
busses:
• Provides programmable master priority on AHB-
CPU bus
• AHB-CPU bus where the Cache, or the CPU can be
masters
• Provides programmable ICM priority for the con-
nected Slaves
• AHB-DMA bus where the DMA the OTP Controller
and the AES/HASH DMA can be masters
• Enables AHB access of the CPU at the cache RAM
if no cache functionality is required
BLE
ECC
Re-
map
Addr0
Remap_
RAMS
ARM
M0
Ctrl.
Cache
HW
patch
Mem.Ctrl.
ROM Ctrl.
Data RAM cells
ROM
AON Reg. Files
CRG reg
WakeUp reg
QSPI FLASH
(in package)
AES/Hash DMA
OTPC
Periph. Reg. Files
UART reg
SPI reg
etc.
QSPIC reg
Radio Reg. Files
RF reg
APB-16 Bridge
Coex reg
DMA
Sys Reg. Files
WDG reg
DMA reg
etc.
Audio Reg. Files
PCM reg
etc
APB-32 Bridge
AHB Reg. Files
TRNG Reg. File
BLE reg
CRYPTO reg
OTPC reg
PATCH reg
ECC reg
Legend:
AHB/APB Master interface.
AHB/APB Slave interface
AHB/APB Bus
TRNG RAM
AHB Interconnection Matrix (ICM)
OTP Mem
OTPC reg
Figure 34: AMBA Bus architecture
There are six slaves which are sitting behind intercon-
nection multiplexers (ICMs) namely:
• AHB register files for the rest of the resources as
well as the TRNG RAM
• 32-bit APB peripheral registers
• Memory controller which controls the DataRAM and
the ROM cells
• Cache controller which enables AHB access of the
CPU at the cache RAM to be used as an extension
of the DataRAM in the case of mirrored mode.
• QSPI FLASH memory controller and memory
• 16-bit APB peripheral registers
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In the latter case, the ICM_S0 provides a direct access
of the CPU at the cache RAM cell. The Cache RAM
cell is always mapped at address 0x20010000. The
TAG RAM is not used during this mode of operation.
The priority on the AHB-DMA busses regarding the
master arbitration is programmable. The following table
depicts the default priority scheme (1=Highest Priority):
Table 24: AHB-DMA master default priorities
Priority
Master
1
2
3
OTP Controller DMA
AES/HASH DMA
Generic DMA
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Features
10 Memory Controller
• Five different RAM cells with retention capability
(one 8 kB, one 24 kB and three 32 kB)
The Memory controller is responsible for the interface
of the memory cells with the masters of the system
requesting for access. It comprises an arbiter which
allows for a configurable priority level between the 3
main masters of the RAM. The memory controller also
allows for the actual physical sequence of the RAM
cells in a continuous memory space enabling activation
of just the required amount of DataRAM thus saving on
power.
• Full flexibility of re-arranging the first 3 RAM cells in
a continuous RAM space starting at 0x7FC0000
• Arbitration between the AHB masters (CPU or
DMAs) the BLE core and the ECC
• Retainable configuration of the RAM cells sequence.
SYS_CTRL_REG[REMAP_RAMS]
DataRAM 1
8KB
Sequence
Config
DataRAM 2
24KB
BLE Mem I/F
DataRAM 3
32KB
BLE 4.2
ECC
BLE - AHB
DataRAM 4
ECC Mem I/F
0x7FD0000
32KB
DataRAM 5
32KB
Memory Controller
Figure 35: Memory Controller Block Diagram and environment
The Shuffle_RAM word in the OTP header encodes the
nects to the following busses:
sequence of the RAM cells. This is described in Table
25:
• ICM which multiplexes the CPU or the DMA access.
This interface is capable of operating at maximum
96MHz
Table 25: DataRAM cells sequence
• BLE Memory I/F: this is a memory interface from the
BLE 4.2 Core directly accessing the RAM used as
exchange memory (TX/RX descriptors etc.). This
interface is always operating at 16MHz.
Value
Cell
Addess
Size (kB)
0x0
DataRAM1 0x7FC0000
DataRAM2 0x7FC2000
DataRAM3 0x7FC8000
DataRAM2 0x7FC0000
DataRAM1 0x7FC6000
DataRAM3 0x7FC8000
DataRAM3 0x7FC0000
DataRAM1 0x7FC8000
DataRAM2 0x7FCA000
DataRAM3 0x7FC0000
DataRAM2 0x7FC8000
DataRAM1 0x7FCE000
8
24
32
24
8
• ECC Memory I/F: this is a memory interface from the
Elliptic Curve Crypto block directly accessing the
RAM used as crypto shared memory. This interface
is capable of operating at maximum 96MHz.
0x1
0x2
0x3
The Arbiter implements the priority scheme as depicted
in Figure 36:
32
32
8
24
32
24
8
Selecting the appropriate shuffle value, the minimum
required memory space can be left retained during
sleep modes hence reducing the sleep power dissipa-
tion.
The Memory Controller contains an Arbiter which con-
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Figure 36: Memory controller’s arbitration scheme
The overall RAM size can reach up to 144 kB using all
available RAM cells of the system (except for the TAG
RAM cell). Bypassing the cache controller adds the
Cache RAM on the overall RAM budget at the end of
the available memory space (0x7FC8000).
The Sequence Configuration block defines the
sequence of the memory cells in a continuous memory
space according to the REMAP_RAMS vector. All of
the cells can be retained at will. Shuffling of the mem-
ory cells will give the best configuration in terms of
exchange (retainable) memory, code segment and
data segment.
The Memory Controller operates at the same clock as
the CPU.
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• Transparent random address access to the OTP
Bluetooth Low Energy 4.2 SoC
11 OTP Controller
memory cells via the AHB slave memory interface.
The OTP controller realizes all functions of the OTP
macro cell in an automated and transparent way. The
controller facilitates all data transfers (reading and pro-
gramming), while implementing the required OTP test
modes in hardware. It integrates Error Correcting Code
(ECC) hardware for correcting single bit and detecting
double bit errors and Built-in Self Repair (BISR) pro-
tecting the memory cell space. An embedded DMA
engine enables mirroring of the OTP contents into the
DataRAM via the AHB-DMA bus.
• Embedded DMA engine for fast mirroring of the OTP
contents into the System RAM.
• Embedded DMA supports reading in bursts of 8 32-
bit words
• Built-In Self Repair (BISR) mechanism for program-
ming and reading
• Up to 48 MHz operation (96 MHz is not supported)
• Hardwired handshaking with the PMU to realize the
mirroring procedure
Features
• Implements all timing constraints for any access to
the physical memory cells.
• Automatic single Error Code Correction (ECC) and
double error detection
• 64-bits read in a single clock cycle from the OTP cell
AHB-CPU
AHB Slave
Registers
AHB Slave
Memory
Master AHB-DMA
Copy
Req/Ack
Slave
DMA
FIFO
ECC
IF Ctrl
Controller
OTP Memory
(64+8)bits x 8192
Figure 37: OTP Controller block diagram
11.1 OPERATING MODES
tified in the status register.
There are two different functional modes of operation
for reading and programming respectively: manual
(MREAD, MPROG) and automatic (AREAD, APROG).
The OTP operating mode is programmable at
OTPC_MODE_REG[OTPC_MODE_MODE].
The MPROG mode provides the functionality for pro-
gramming a 64 bit word. The controller expands the 64
bit word by calculating and appending an 8-bit check-
sum, implementing SECDED (Single Error Correction
Double Error Detection). In this way a complete 72 bits
word is constructed, which is stored at a selected OTP
position.
The MREAD mode enables the use of the memory
slave interface. By activating this mode the contents of
the macro cell are transparently mapped onto the spe-
cific AHB slave address space. The controller runs the
SECDED algorithm on the fly to correct single bit errors
and notify for dual bit errors by means of the status reg-
ister. This mode can be used for execution of software
in place (XIP).
Programming is performed in a single step. In the case
that one or more bits have failed to be programmed
correctly, software should trigger re-programming.
The 64 bit data word as well as the address are defined
through configuration registers. The controller applies
the corresponding control sequence for the program-
ming and the result of the verification step is indicated
in a status register.
The AREAD mode provides the ability for reading data
from the macro cell in bursts, without the use of the
slave interface. This mode is used for copying large
data blocks from the macro cell, as in the case of the
OTP mirroring into the DataRAM. As in the MREAD
mode, SECDED is also applied on every burst. How-
ever, transfer will occur even if an error has been iden-
The APROG mode gives the ability for programming
large data blocks into the macro cell. The programming
is an automated procedure, during which it is only nec-
essary to feed the controller with the required data.
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Data blocks can be fetched in two ways:
• Via the AHB master interface, i.e. the DMA.
• Via the AHB slave registers.
11.5 BUILD-IN SELF REPAIR (BISR)
The repair mechanism is available only during pro-
gramming (APROG mode only) or reading (Both
AREAD and MREAD). Only the main memory array is
protected (there is no repair mechanism for the spare
rows). It is also not available during blank check.
In the latter case, data are pumped into the OTP con-
troller through a register, which acts as a port providing
access to a FIFO. The controller expands each 64 bit
word by calculating and adding automatically an 8-bit
checksum, in order to provide SECDED functionality.
In the case of programming the OTP, the controller ini-
tially tries to write to the normal memory array. There
are two cases depending on the result of the program-
ming:
11.2 AHB MASTER INTERFACE
1. The programming in the main memory array
succeeds (with one or zero errors). The pro-
gramming ends normally.
The AHB master interface is controlled by a DMA
engine with an internal FIFO of 8 32-bit words. The
DMA engine supports AHB reads and writes. The AHB
address where memory access should begin, is pro-
2. The programming of the main memory array
fails. If there are already 8 repair records occu-
pied, programming fails and the device is dis-
carded. Otherwise, a new repair record is added.
The controller writes the new repair record in the
spare area. In the case of a failure (two or more
errors) the device is discarded. Otherwise the
programming ends successfully.
grammed
into
the
DMA
engine
at
OTPC_AHBADR_REG[OTPC_AHBADR]. The num-
ber of 32-bit words (minus 1) of a transfer must be
specified in OTPC_NWORDS_REG[OTP_NWORDS].
The DMA engine internally supports the following burst
types:
• Eight words incremental burst (INCR8)
• Four words incremental burst (INCR4)
Reading from the OTP cell requires the corresponding
registers of the OTP controller to be loaded with the
repair information. When a read action is requested,
the OTP controller performs a search in the repair
records.
• Unspecified incremental burst (INCR) with length dif-
ferent than 1, 4 or 8
• Single word access (SINGLE)
If the address, of the read requested, is found in one of
the repair records, the data are not retrieved from the
normal memory array of the OTP, but from the repair
records. The ECC is, in this case, bypassed.
11.3 AHB SLAVE INTERFACES
The slave block combines two AHB slave interfaces.
One for the registers and another for the contents of
the OTP memory. The first AHB slave is read/write
while the second is read only. The controller should be
configured into MREAD mode prior to any access on
the slave interfaces. If this is not the case, an ERROR
response on the bus will occur. The same ERROR can
also be triggered upon a SECDED detection.
If there is no match to a repair record, data are
retrieved from the normal memory array. ECC is then
activated.
11.4 ERROR CORRECTING CODE (ECC)
The error correcting code is based on the Hamming
code, for a single bit error correction. The functionality
of the Hamming code has been enhanced with the
addition of a parity bit. The presence of the parity bit
enables the detection of a double bit error.
The redundancy that is provided by the use of the two
algorithms (Hamming and parity generation) is stored
together with the actual data at each OTP position.
consisting of a 72 bits word. The exact layout of the
OTP word is presented in Figure 38:
Bit 71 Bit 70-64
Bit 63-0
Check
Parity
Payload Data
Bits
Figure 38: OTP word layout
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• SPI Modes:
12 Quad SPI Controller
Single: Data transfer via two unidirectional pins.
Dual: Data transfer via two bidirectional pins.
Quad: Data transfer via four bidirectional pins.
The Quad SPI Controller (QSPIC) provides a low pin
count interface to FLASH memory devices. The QSPIC
supports the standard Serial Peripheral Interface (SPI)
and a high performance Dual/Quad SPI Interface.
• Auto Mode: up-to 32 Mbyte transparent Code
access for XIP (Execute In Place) and Data access
with 3-byte and 4-byte addressing modes.
The QSPIC gives the ability to read data from a quad
FLASH memory, transparently through the SPI bus.
This Execute In Place (XIP) feature combined with the
CPU cache, provides comparable performance to exe-
cuting code from standard parallel FLASH. In this case
the QSPIC generates all the control signals for the SPI
bus that are needed to read data from the serial
FLASH memory. Additionally, software can easily con-
trol the serial FLASH memory via a memory mapped
register file which is contained in the QSPIC. All
instructions supported by the FLASH memory, can be
programmed using the above register file.
• Manual Mode: Direct register access using the
QSPIC register file.
• Up-to 96 MHz QSPI clock. Clock modes 0 and 3.
Master mode only.
• Vendor independent Instruction Sequencer.
• In Auto Mode the FLASH control signals are fully
programmable.
• Support for single access and high performance
burst mode in combination with the cache controller
(in Auto Mode).
A special feature of the QSPIC enables for automated
re-initialization of the FLASH device right after power
up, without the CPU being involved, thus reducing ini-
tialization time and consequently power dissipation. An
small initialization memory of 16 32-bit retainable
words, contains an encoded sequence of commands
which are shifted in to the FLASH memory right after
waking up from power down modes.
• Use of a special read instruction in the case of a
specific (programmable) wrapping burst access.
• Erase suspend/resume to Support for Code and
Data storage
• Hardware initialization state machine based on
uCode commands.
Features
Initialization
Req/Ack
Handshake
Bus
Interface
AHB Slave
Interface
AHB
QSPI I/F
Syncronizer
Register
File
Controller
uCode RAM
32 bit x 16 words
QSPI Controller
Figure 39: Quad SPI Controller architecture
12.1 ARCHITECTURE
two clock domains.
The AHB slave block implements two AHB Slave inter-
faces which enable access to the register file and the
uCode memory. The Controller implements all protocol
related to the functionality of the FLASH memory. It
contains a finite state machine (FSM) that generates all
necessary signalling to the QSPI bus and realizes all
features of the Auto mode operation. Moreover, it man-
ages all data transfers between the two interfaces (the
AHB and the QSPI).
The uCode memory is 16 words x 32 bits and contains
the microcode for the initialization of the FLASH mem-
ory even before the CPU has been waken up. The sig-
nalling between the FIFO and the PMU is done through
the request/acknowledge signals.
12.1.1 Interface
The Quad SPI Controller uses the following signals:
• QSPI_SCK: output serial clock
• QSPI_CS: Active Low output Chip select.
The Bus Interface block controls the QSPI signals at
the lowest level while the Synchronizer implements
"stretching" or "shortening" of the signals that cross the
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• QSPI_IO0:
- DO (output) in Single SPI mode
- IO0 (bidirectional) in Dual/Quad SPI mode.
Table 26: Initialization Command Encoding
• QSPI_IO1:
- DI (input) in Standard SPI mode
- IO1 (bidirectional) in Dual/Quad SPI mode.
Bit
Name
Description
Byte 0
7:3
2:1
CMD_NBYTES The number of payload
bytes to be sent
• QSPI_IO2:
- General purpose (output) (e.g. WPn Write Protect)
in Standard SPI mode
CMD_TX_MD
QSPI bus mode when trans-
- IO2 (bidirectional) in Quad SPI mode.
mitting the command:
0x0: single SPI
0x1: Dual SPI
0x2: Quad SPI
0x3: Reserved
• QSPI_IO3:
- General purpose (output) (e.g. HOLDn)
in Single SPI mode
- IO3 (bidirectional) at Quad SPI mode.
0
CMD_VALID
1: the command record is
valid
0: the command record is
not valid
• The output drive of the pads is programmable via
register bits QSPI_GP_REG[QSPI_PADS_DRV]
and the slew via
QSPI_GP_REG[QSPI_PADS_SLEW]
Byte 1
• The outputs pads have push-pull configuration and
are supplied from VDDIO.
7:0
7:0
CMD_WT_CN Number of clock cycles to
T_LS
wait after applying the com-
mand (least significant byte)
The Quad SPI Controller (QSPIC) drives all data pins
constantly except for the case when a read is per-
formed. The time for changing the direction of the pads
is at least 1.5 x QSPI_CLK (QSPI_CLK being the clock
that the FLASH operates on). In this way, data lines are
always terminated thus reducing unnecessary power
consumption.
Byte 2
CMD_WT_CN Number of clock cycles to
T_MS
wait after applying the com-
mand (most significant byte)
Byte 3 to (CMD_NBYTES+2)
The default state of the QSPI_IOx pins is 1. This state
is applied at the pins as soon as the QSPIC clock is
enabled even if no access to the FLASH has yet been
triggered. The value of the pins might be changed by
The actual data bytes to be
sent within a CS envelope
The first byte (LSByte) in the word of the FIFO contains
the flag of the command being valid or not, the bus
mode of operation and the number of bytes contained
in the payload to be sent.
programming
the
respective
registers
(QSPIC_IOx_DAT, QSPIC_IOx_OEN). This value will
be valid only after the QSPI_CS is pulled low, i.e. an
access to the FLASH occurs.
The second and third byte define the amount of clock
cycles that the QSPIC has to wait after applying the
command. The clock to be used is the RC16
(~16 MHz), which results to a maximum of 4 ms waiting
time. If more time is required by the FLASH, then multi-
ple identical commands might be issued.
12.1.2 Initialization FSM
Since the QSPIC is used in an ultra low power SoC, it
is very possible that the FLASH memory will be either
totally powered off, or set into deep power down mode
when the system goes to any of the sleep modes.
However, upon power-up or wake-up, the FLASH
device requires a number of commands to get at a
state where the CPU can actually execute code from.
This initialization should be done prior to the CPU
wakeup. The QSPIC contains a hardware state
machine which decodes a number of commands in a
16 32-bit word retainable FIFO and initializes the
FLASH automatically even before the CPU is waken
up.
Example:
Considering 0xAB to be the opcode for releasing the
FLASH from deep power down mode, the FIFO would
be initialized with the following sequence (Table 27):
Table 27: FLASH Initialization uCode example
Byte
Value Description
The command FIFO will be initialized upon cold boot of
the system by the CPU with the commands residing in
the OTP header. The start address of the RAM to be
programmed with the uCode is 0x0C000040. The com-
mand encoding is presented in Table 26:
0
0x11
Valid command record,
single SPI mode,
2 bytes of payload
1
2
3
0x01
0x00
0xAB
1 clock cycle wait after command is
sent
Actual FLASH command opcode
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Mode) can be configured via this register file. The reg-
Bluetooth Low Energy 4.2 SoC
12.1.3 SPI modes
ister file supports the following data sizes for reading
and writing accesses: 8-bits, 16-bits and 32 bits.
The Quad SPI Controller (QSPIC) supports the follow-
ing SPI standards:
• Single: Data transfer via two unidirectional pins.
12.1.5 Endianess
Note 2: The QSPIC supports communication to any single/dual or
Quad SPI FLASH memory. Contrary to the Standard SPI
interface, the supported Single SPI interface does not sup-
port the bus modes 1 and 2, does not support full-duplex
communications and does not support any SPI slave mode.
The QSPIC operates in little-endian mode. For 32-bit
or 16 bit access (for read and write operations) to a
serial FLASH memory, the least-significant byte comes
first. For 32-bit access the byte ordering is: data [7:0],
data [15:8], data [23:16], data [31:24] while for 16-bit
access the byte ordering is: data [7:0], data [15:8].
• Dual: Data transfer via two bidirectional pins.
• Quad: Data transfer via four bidirectional pins.
12.1.6 Erase Suspend/Resume
12.1.4 Access modes
The QSPI FLASH can be used for Data Storage, com-
bining the EEPROM functionality + Program storage in
one single device.
The access to a serial FLASH connected to the QSPI
can be done in two modes:
For this purpose the QSPI ERASE/SUSPEND ERASE
RESUME commands are automatically executed as
shown in Figure 40.
• Auto mode
• Manual mode
These modes are mutually exclusive. The serial
FLASH can be controlled only in one of the two modes.
The registers which control the mode of operation can
be used at any mode.
To store data in QSPI FLASH, execution from QSPI
must temporary be stopped by running directly from
RAM or from a cached program part. The sector desig-
nated for storage must be erased first in case it con-
tained data already.
In auto mode, 3-bytes and 4-bytes addressing modes
are supported. With QSPIC_CTRLMODE_REG
[QSPIC_USE_32BA]=0, up to 16 MBytes QSPI (3-
The process is implemented in a HW FSM and con-
sists of the following steps:
bytes
addressing)
can
be
accessed.
If
1. The controller is in Auto mode and read requests
are served. The Erase procedure is initiated by
setting QSPIC_ERASE_EN=1. The address of
the sector that will be erased, is defined at
QSPIC_ERS_ADDR. When an Erase procedure
is requested, the controller jumps to state 2.
QSPIC_USE_32BA=1, the 4-bytes addressing is ena-
bled for accessing up to 32 Mbyte QSPI FLASH.
Auto mode
In auto mode a read access from the serial FLASH
memory is fully transparent to the CPU. A read access
at the interface is translated by the QSPIC into the
respective SPI bus control commands needed for the
FLASH memory access.
2. Read requests are still served. As soon as the
Read requests stop (also possible due to late
bus master change, e.g DMA) and there is no
any new Read request for a number of AHB
clock cycles equal to QSPIC_ERSRES_HLD,
When the Auto Mode is disabled, any access (reading
or writing) will be ignored. When the Auto Mode is ena-
bled, only read access is supported. A write access
causes hard fault. A read access can be single access,
incremental burst or wrapping burst. Wrapping burst is
supported even when the FLASH device doesn’t sup-
port any special instruction for wrapping burst. A spe-
cial read instruction can be used in the case of a
specific (programmable) wrapping burst access. When
a FLASH supports a special instruction for wrapping
burst access, this feature reduces access time (less
wait states). For maximizing the utilization of the bus
and minimizing the number of wait states, it is recom-
mended to use burst accesses. However, non-sequen-
tial random accesses are supported with the cost of
more wait states.
then
QSPIC_WEN_INST
and
QSPIC_ERS_INST instructions are sent to the
FLASH. The QSPIC_RESSUS_DLY counter is
started and the controller jumps to state 3.
3. Erasing is in progress in FLASH and the QSPI
controller waits until one of the following events
occur:
• A status check request. This request can be
forced by writing QSPIC_CHCKERASE_REG.
The QSPI controller will then read the status of
the FLASH memory and check if erasing has
finished. Reading of the status is delayed by
QSPIC_RESSTS_DLY cycles or by
QSPIC_RESSUS_DLY cycles. The first is
based on the clock of the SPI bus, while the lat-
ter on an internal 222 KHz clock. The selection
between the two delays is configured by
QSPIC_STSDLY_SEL bit. If erasing has fin-
ished, the QSPI controller returns to the normal
operation (state 1) and sets
Manual Mode
In manual mode the FLASH memory is controlled via a
register file. All instructions that are supported by a
FLASH memory can be programmed using the register
file. Moreover, the mode of interface (SPI, Dual SPI,
Quad SPI) and the mode of operation (Auto or Manual
QSPIC_ERASE_EN= 0, otherwise it remains at
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until the FLASH device becomes ready (erasing
Bluetooth Low Energy 4.2 SoC
state 3.
is suspended). The controller will then proceed
to state 6.
• A FLASH read data request on the AHB bus.
The QSPI controller reads the status of the
FLASH memory and checks if erasing is done.
The reading of the status will be delayed again
as in the previous case by
6. The erasing process in the FLASH is now sus-
pended and the controller may read the FLASH.
The requested data are retrieved from the
FLASH device. If the reading on the AHB stops
(e.g Cache hit) and there is no new Read
requests for a number of AHB clock cycles equal
to QSPIC_ERSRES_HLD, the controller goes to
state 7.
QSPIC_RESSTS_DLY or
QSPIC_RESSUS_DLY. If erasing has ended,
the controller returns to normal operation (state
1) and sets QSPIC_ERASE_EN= 0. The read
request will be served as soon as the controller
reaches state 1. If erasing has not ended, the
controller proceeds to state 4.
7. The QSPIC_RES_INST instruction is applied
and the controller jumps back to state 3. Also,
the QSPIC_RESSUS_DLY counter is started.
As result, the erase procedure is resumed.
4. The QSPIC_SUS_INST is sent as soon as the
QSPIC_RESSUS_DLY/QSPIC_RESSTS_DLY
counter is 0. The controller jumps to state 5.
5. The controller polls the FLASH status register,
ERS_STATE = No erase
QSPIC_ERASE_EN=1
ERS_STATE = Pending
1
Erase Request
ERS_STATE = Erase Resume Request
Start QSPIC_RESSUS_DLY counter
Read
2
request
7
(Read| check erase) & BUSY_VAL=0
Set QSPIC_ERASE_EN=0
/Read & ERRSRES_HLD cycles
send QSPIC_WEN_INST and QSPIC_ERS_INST
start QSPIC_RESSUS_DLY counter
/Read & ERRSRES_HLD cycles
read
request
6
send QSPI_RES_INST
ERS_STATE = Erase
Suspended
3
ERS_STATE = Erasing
BUSY_VAL=0
5
Read & BUSY_VAL=1
4
BUSY_VAL=1
send QSPI_SUS_INST
ERS_STATE = Erase Suspend
Request
Wait for QSPIC_RESSUS_DLY=0
Figure 40: Erase Suspend/Resume in Auto mode
Refer to AN-D-185 for further Application information
12.2 PROGRAMMING
Note that, QSPI_RESSTS_DLY counts QSPI_CLK
cycles, so before changing the QSPI_CLK, make sure
that QSPI_RESSTS_DLY is set large enough to meet
the timing parameter requirements of the FLASH
device used.
12.2.1 Auto Mode
Chip selection
In auto mode the QSPI executes from address 0. See
Arm chapter remap function
Burst control phases
12.1.7 QSPI FLASH Programming
In the case of Auto Mode of operation the QSPIC gen-
erates a sequence of control signals in SPI BUS. This
sequence of control signals is analysed to the following
phases: instruction phase, address phase, extra byte
phase, dummy clocks phase and read data phase.
These phases can be programmed via registers
Programming the sectors is done in manual mode with
polling status bit in the QSPI FLASH. During program-
ming, the Arm Cortex-M0 must run from cache without
cache misses or from RAM. Furthermore interrupts
should be disabled while programming the FLASH.
Byte programming is relatively short, so a polling loop
could be acceptable to meet system latency require-
ments. Refer to vendor’s datasheet.
• QSPIC_BURSTCMDA_REG
• QSPIC_BURSTCMDB_REG.
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Writing to QSPIC_DUMMYDATA register is generating
Bluetooth Low Energy 4.2 SoC
Bits QSPIC_INST are used to set the selected instruc-
tion for the cases of incremental burst or single read
access. If bit QSPIC_WRAP_MD is equal to 1, bit
QSPIC_INST_WB can be used to set the used instruc-
tion for the case of a wrapping burst read access of
a number of dummy clock pulses to the SPI bus.
When access to the SPI bus via QSPIC_WRITEDATA,
QSPIC_READDATA and QSPIC_DUMMYDATA is very
slow, most probably the delay in accessing the internal
AHB is large. In this case, set the QSPIC_HRDY_MD
register equal to 1 to increase priority when accessing
the required registers. All masters of the SoC can
access the AHB bus interface without waiting of the
SPI Bus access completion. Polling of the
QSPIC_BUSY register must be done to check the end
of the activity at the SPI bus, before issuing any more
length
and
size
described
by
the
bits
QSPIC_WRAP_LEN
and QSPIC_WRAP_SIZE
respectively. In all other cases the QSPIC_INST is the
selected instruction.
If the instruction must be transmitted only in the first
access after the selection of Auto Mode, then the
QSPIC_INST_MD must be equal to 1.
accesses. If
QSPIC_RECVDATA contains the received data.
a
read transaction is finished,
To
enable
the
extra
byte
phase
set
QSPIC_EXT_BYTE_EN=1 register. The transmitted
byte during the extra byte phase is specified by the
QSPIC_EXT_BYTE register. To disable (hi-Z) the out-
put pads during the transmission of bits [3:0] of extra
byte, set QSPIC_EXT_HF_DS =1.
The state and the value of the QSPI_IO[3:2] is speci-
fied with the following registers bits:
• QSPIC_IO3_OEN, QSPIC_IO3_DAT
(Used for the WPn, Write Protect function).
The number of dummy bytes during the dummy
• QSPIC_IO2_OEN, QSPIC_IO2_DAT respectively
(Used for the HOLDn function).
clocks
QSPIC_DMY_NUM
QSPIC_DMY_FORCE.
phase
is
specified
and
by
enabled
register
by
12.2.3 Clock selection
The SPI BUS mode during each phase can be set with
register bits:
The SPI clock mode as set with bit QSPIC_CLK_MD
The supported modes for the generated SPI clock is:
• QSPIC_INST_TX_MD for the instruction phase
• QSPIC_ADR_TX_MD for the address phase
• QSPIC_EXT_TX_MD for the extra byte phase
• QSPIC_DMY_TX_MD for the dummy byte phase
• QSPIC_DAT_RX_MD for the read data phase.
If the Quad SPI mode is selected in any of the above
• 0 = Mode 0. The QSPI_SCK is low, when the bus is
idle (QSPI_CS is high).
• 1= Mode 3. The QSPI_SCK is high, when the bus is
idle (QSPI_CS is high).
The QSPI_CLK frequency has a programmable divider
CLK_AMBA_REG[QSPI_DIV] which divides either
XTAL16 or PLL by 1,2,4,8.
phases, write
0
to the QSPIC_IO3_OEN and
This results in frequency ranges:
QSPIC_IO2_OEN.
• In XTAL16 mode: between 2 MHz and 16 MHz
• In PLL mode: between 12 MHz and 96 MHz.
The QSPI_CLK can be faster or slower than HCLK.
If the FLASH Memory needs to be accessed with any
instruction but the read instruction, then the Manual
Mode must be used.
The final step to enable the use of Auto Mode of opera-
tion is to set the QSPIC_AUTO_MD equal to 1.
12.2.4 Received data
The standard method to sample received data is by
using the positive edge of the QSPI_SCK. However,
when the output delay of the FLASH memory is high, a
timing problem on the read path is very likely. For this
reason the QSPIC can be programmed to sample the
received data with the negative edge of the
12.2.2 Manual Mode
For the Manual Mode QSPIC_AUTO_MD must be
equal to zero.
Manual operation of the bus signals is done via
QSPIC_CTRLBUS_REG:
QSPI_SCK.
This
is
configured
with
the
• The start/end of an access can be controlled using
bits QSPIC_EN_CS and QSPIC_DIS_CS respec-
tively.
QSPIC_RXD_NEG register.
Furthermore the receive data can be pipelined by set-
ting QSPI_RPIPE_EN=1 and the sampling clock can
be delayed using QSPI_PCLK_MD. This enables sam-
pling the received data later than the actual clock edge
allows.
• The SPI bus mode of operation can be configured
with bits QSPIC_SET_SINGLE, QSPIC_SET_DUAL
and QSPIC_SET_QUAD.
Writing to QSPIC_WRITEDATA register is generating a
data transfer from the QSPIC to the SPI bus.
12.3 TIMING
This section contains timing diagrams for input and out-
put signals
A read access at QSPIC_READDATA register is gener-
ating a data transfer from the SPI bus.
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1/Fqspi_clk
QSPI_SCK
Thd_qspi_dif
Tsu_qspi_dif
QSPI Output
QSPI_IOx (input)
Figure 41: QSPI Input Timing
Tdr_qspi_cs
QSPI_CS
Tdf_qspi_cs
MODE 3
MODE 3
MODE 0
QSPI_SCK
MODE 0
Td_qspi_do
QSPI_IOx (output)
Figure 42: QSPI output Timing
Table 28: QSPI bus timing (VDDIO = 1.8V, Cload=15 pF)
PARAMETER
Fqspi_sck
DESCRIPTION
CONDITIONS
MIN
-1.4
TYP
MAX
UNITS
MHz
ns
QSPI _SCK frequency
Delay QSPI_SCK to QSPI_IOx
96
3
Td_qspi_do
Tdr_qspi_cs
Tqspi_sck
- 2.5
Tqspi_sck
+2.0
Delay QSPI_SCK to QSPI_CS Tqspi_sck=1/Fqspi_sck
ns
Tqspi_sck
- 2.5
Tqspi_sck
+3.5
Tdf_qspi_cs
Tsu_qspi_dif
Delay QSPI_CS to QSPI_SCK Tqspi_sck=1/Fqspi_sck
ns
ns
Setup time QSPI_IO to
QSPIC_PCLK_MD=6
QSPIC_PCLK_MD=6
2.6
QSPI_SCK falling edge with
variable readpipe sample clock
delay QSPI_RPIPE_EN=1
Thd_qspi_dif
Hold time QSPI_SCK falling
edge to QSPI_IO with variable
readpipe sample clock delay
QSPI_RPIPE_EN=1
-0.3
ns
Note 3: Total Delay QSPI FLASH output + PCB delay + Tsux_qspi_dif < 1/Fqspi_sck.
E.g Winbond output + PCB delay = 6ns, -> Tsux_qspi_dif < 1/96MHz - 7 = 3.41 -> QSPI_PCLK_MD= 6, QSPI_RPIPE_EN=1 is recom-
mended value for all QSPI_SCK frequencies and shall be set before the maximum frequency is applied
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Features
13 DMA Controller
• 8 channels with optional peripheral trigger
• Full 32 bit source and destination pointers.
• Flexible interrupt generation.
• Programmable length
The DMA controller has eight Direct Memory Access
(DMA) channels for fast data transfers from/to SPI,
UART, I2C, USB, PDM and ECC to/from any on-chip
RAM.
The DMA controller off-loads the Arm interrupt rate if
an interrupts is given after a number of transfers.
• Flexible peripheral request per channel
• Option to initialize memory
More peripherals DMA requests are multiplexed on the
8 available channels, to increase utilization of the DMA
service throughout the system.
AHB-DMA
SPI RX/TX req
I2C RX/TX req
SPI RX/TX ack
DMA Channel 0
. . .
I2C RX/TX ack
DMA Channel 1
. . .
SPI RX/TX req
I2C RX/TX req
SPI RX/TX ack
DMA Channel 2
DMA Channel 3
. . .
I2C RX/TX ack
. . .
SPI RX/TX req
I2C RX/TX req
SPI RX/TX ack
DMA Channel 4
DMA Channel 5
. . .
I2C RX/TX ack
. . .
SPI RX/TX req
I2C RX/TX req
SPI RX/TX ack
DMA Channel 6
DMA Channel 7
. . .
I2C RX/TX ack
. . .
DMA01_REQ_MUX
DMA23_REQ_MUX
DMA45_REQ_MUX
DMA67_REQ_MUX
DMA IRQ lines
IRQ lines
Block IRQ lines
APB16
Control
Figure 43: DMA controller block diagram
Table 29: DMA served peripherals
13.1 DMA PERIPHERALS
There is a list of peripherals that can request for a DMA
service. The list is presented in Table 29:
Name
SPI
Direction
TX
SPI2
SPI2
UART
UART
RX
Table 29: DMA served peripherals
TX
RX
Name
Direction
TX
SPI
RX
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the transfer starts. This register is increased by 1 at the
Bluetooth Low Energy 4.2 SoC
Table 29: DMA served peripherals
end of each DMA cycle and is then compared to
DMAx_LEN_REG, to determine the transfer's comple-
tion. It is then automatically reset to 0 again.
Name
UART2
UART2
I2C
Direction
RX
Based on this register, the DMA engine forms the
source/destination address at each DMA cycle, by add-
ing it to DMA_A/B_START_ADDR, after shifting it by 1
(when DMAx_CTRL_REG[BW]=0x1) or by 2 (when
DMAx_CTRL_REG[BW]=0x2).
TX
RX
I2C
TX
I2C2
RX
It also noted that, AINC/BINC must be set to '0' for
source/destination register access.
I2C2
TX
USB_FS
USB_FS
ADC
RX
TX
Read
RX
31
DMAx_A_START_REG
0
PCM
+
+
PCM
TX
SRC
RX
AD[31-0]
AINCx
BINCx
SRC
TX
IDXx_REG
+1
ECC can also be served by the DMA but will not be
requesting for data as other peripherals.
31
DMAx_B_START_REG
0
IRQ_ENABLE
Please note that for the TX DMA transfers to UART/
UART2 and I2C/I2C2, it is required that pclk = hclk (i.e.
CLK_AMBA_REG[PCLK_DIV]=0x0) and that the TX
FIFO threshold level is not set to the highest value
available where applicable.
12
DMAx_INT_REG
0
0
=
DMA_IRQ_CHx
13.2 INPUT/OUTPUT MULTIPLEXER
STOP/
12
RELOAD
The multiplexing of peripheral requests is controlled by
DMA_REQ_MUX_REG.
=
DMAx_LEN_REG
Thus,
if
DMA_REQ_MUX_REG[DMAxy_SEL] is set to a cer-
tain (non-reserved) value, the TX/RX request from the
corresponding peripheral will be routed to DMA chan-
nels y (TX request) and x (RX request) respectively.
11
0
Bus request
Acknowledge
DMAx_CTRL_REG
Similarly, an acknowledging de-multiplexing mecha-
nism is applied.
DMA_INT
DACK
DMA_Request
However, when two or more bit-fields (peripheral selec-
tors) of DMA_REQ_MUX_REG have the same value,
the lesser significant selector will be given priority (see
also the register's description).
Figure 44: DMA channel diagram
If at the end of a DMA cycle, the DMA start condition is
still true, the DMA continues. The DMA stops if
DREQ_MODE is low or if DMAx_LEN_REG is equal to
the internal index register. This condition also clears
the DMA_ON bit.
13.3 DMA CHANNEL OPERATION
A DMA channel is switched on with bit DMA_ON. This
bit is automatically reset if the dma transfer is finished.
The DMA channels can either be triggered by software
or by a peripheral DMA request. If DREQ_MODE is 0,
then a DMA channel is immediately triggered. If
DREQ_MODE is 1 the DMA channel can be triggered
by a hardware interrupt.
If bit CIRCULAR is set to 1, the DMA controller auto-
matically resets the internal index registers and contin-
ues from its starting address without intervention of the
Arm Cortex-M0. If the DMA controller is started with
DREQ_MODE =0, the DMA will always stop, regard-
less of the state of CIRCULAR.
If DMA starts, data is transferred from address
DMAx_A_START_REG
DMAx_B_START_REG
DMAx_LEN_REG, which can be 8, 16 or 32 bits wide.
The address increment is implemented using a 16-bit
index counter (DMAx_IDX_REG), initialized to 0 when
to
a
address
length of
Each DMA channel can generate an interrupt if
DMAx_INT_REG if equal to DMAx_IDX_REG. After
the transfer and before DMAx_IDX_REG is incre-
mented, the interrupt is generated.
for
Example:
if
DMA_x_INT_REG=0
and
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DMA_x_LEN_REG=0, there will be one transfer and
an interrupt.
13.4 DMA ARBITRATION
The priority level of a DMA channel can be set with bits
DMA_PRIO[2-0]. These bits determine which DMA
channel will be activated in case more than one DMA
channel requests DMA. If two or more channels have
the same priority, an inherent priority applies, (see reg-
ister description).
With DREQ_MODE = 0, a DMA can be interrupted by a
channel with a higher priority if the DMA_IDLE bit is
set. DMA_IDLE is a don’t care if DREQ_MODE = 1.
When DMA_INIT is set, however, the DMA channel
currently performing the transfer locks the bus and
cannot be interrupted by any other channel, until the
transfer is completed, regardless if DMA_IDLE is set.
The purpose of DMA_INIT is to initialize a specific
memory block with a certain value, fetched also from
memory, without any interruption from other active
DMA channels that may request the bus at the same
time. Consequently, it should be used only for memory
initialization, while when the DMA transfers data to/
from peripherals, it should be set to '0'. Note also that,
when DMA_INIT is enabled, BINC should be set to '1',
while AINC is don't care, as the DMA performs a single
read in this mode.
It should be noted that memory initialization could also
be performed without having the DMA_INIT enabled
and by simply setting AINC to '0' and BINC to '1', pro-
vided that the source address memory value will not
change during the transfer. However, it is not guaran-
teed that the DMA transfer will not be interrupted by
other channels of higher priority, when these request
access to the bus at the same time.
13.5 FREEZING DMA CHANNELS
Each channel of the DMA controller can be temporarily
disabled by writing a 1 to freeze all channels at
SET_FREEZE_REG.
To enable the channels again, a 1 to bits at the
RESET_FREEZE_REG must be written.
There is no hardware protection from erroneous pro-
gramming of the DMA registers.
It is noted that the on-going Memory-to-Memory trans-
fers (DREQ_MODE='0') cannot be interrupted. Thus, in
that case, the corresponding DMA channels will be fro-
zen after any on-going Memory-to-Memory transfer is
completed.
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Features
14 AES/Hash Engine
• AES (Advanced Encryption Standard) with 128, 192
or 256 bits key cryptographic algorithm.
The Crypto engine aims to accelerate the algorithm
calculations that are needed in order to implement the
RFC4835. It implements AES in ECB, CBC and CTR
modes. It also comprises HASH functions (SHA-1,
SHA224/256/384/512, MD5). It supports AES128, AES
256 as well as HMAC-SHA-256 authentication proto-
col.
• HASH functions: MD5, SHA-1, SHA224/256/384/
512 bits
• Modes of operation
• ECB (Electronic Code Book)
• CBC (Cipher Block Chaining)
• CTR (Counter)
The AES/HASH engine uses a DMA engine for trans-
ferring encrypted/decrypted data to a shared memory
in the AHB bus. The control registers of the IP are con-
nected to the AHB bus.
• AHB Master DMA machine for data manipulation.
• AHB Slave register file for configuration.
The AES/HASH engine gives more flexibility to the way
input data can be provided to the module. A calculation
can be applied on fragmented input data and not on
data residing at a specific memory space, by means of
successive register programming in the internal DMA
engine.
AES/HASH Engine
TxFIFO
AES
AHB Master
RxFIFO
Key Expansion
Operation
Modes
Command
Control &
Status
MD5
AHB Slave
Registers
SHA‐1/2
Figure 45: AES/HASH Architecture
The “Ctrl FSM” block checks the FIFO’s and DMA sta-
14.1 ARCHITECTURE
tus continuously and decides for the amount of data
traffic, plus which of the FIFO’s will be used. Also
decides the “switching off” of the AES/HASH after
transferring all results to the memory.
14.1.1 AES/HASH engine
The architectural view of the AES/HASH engine is the
following:
The “HASH” block contains all the logic required for the
realization of the hash algorithms calculations as well
as circuitry for the padding of data. It also contains glue
logic for the transfer of the results to the “Modes” block.
The AES/HASH includes a DMA engine (AHB Master
Interface) for transferring data between the IP and a
sheared memory. The control registers of the AES/
HASH are connected to AHB interface (AHB Slave
interface).
14.1.2 AES
This part of the architecture implements the AES algo-
rithm describing in the AES-FIPS PUB 197. The capa-
bilities that offer are the encryption and decryption of
128 bits data blocks by using 128, 192 or 256 bits
encryption key.
The “Modes” controls the AES by implementing the
respective mode that the selected encryption algo-
rithms will operate each time. Also “Modes” communi-
cates with DMA via two FIFO’s (RxFIFO and TxFIFO)
which isolate the operation of the AES/HASH IP from
the current status of the AHB-AMBA bus and also ena-
ble parallel transmission of data in bursts. By using
burst transmission, the bus is utilized better because
the bus access requests are reduced.
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• CBC (Cipher Block Chaining
• CTR (Counter)
KeyExpansion
Padding requirements of the algorithms, to convert all
data to multiples of 16 bytes (for AES), must be
addressed by software.
AddRoundKey
MainFSM
By applying successive programming of AES-CBC
encryptions using software, the realization of the
HMAC-XCBC-AES-96 algorithm is possible.
The implementation of the AES-CCM is feasible just
like the implementation of AES-CTR algorithms for
encryption, and AES-CBC for authentication.
14.1.4 HASH
Figure 46: AES Architecture
The structure of the HASH block is presented in Figure
47:
The internal structure of the AES correlates with the
logic function of the AES algorithm.
• KeyExpansion: The “KeyExpansion” is the process
of generating the number of keys based on the initial
key. More specific generates 11, 13 and 15 keys
from an initial key of 128, 192 and 256 bits respec-
tively. Each round of the algorithm uses each one of
the above keys. For the encryption of each 128 bits
input we need to use all generated, from this pro-
cess, keys.
HASH FUNC
OUTPP
INPP
• AddRoundKey: Adds (modulo 2) the intermediate
status that the input data already transformed (128
bits) with one of the generated (from “KeyExpan-
sion”) keys. The output of this module contains the
result that produced from the application of all the
transformations that take place for the current round
of the algorithm.
Figure 47: HASH block diagram
INPP applies padding at the input data as required by
the hash algorithms. Two types of padding are imple-
mented, due to the different algorithms supported. The
purpose is to ensure that the message is a multiple of
512 bits or 1024 bits depending on the algorithm. Pad-
ding is done in a similar way in both cases. After the
last data byte, one extra byte of value 0x80 is added.
Next, a number of bytes (0x00) is added so that the
overall size of the data block (including the extra bytes)
mod 512/1024 is 448/896 depending on the algorithm.
Following that, a 64/128-bits big-endian number is
attached which represents the size of the data block, in
bits (without the padding). While in this process, TX/RX
FIFOs are switched into 8-bytes mode.
• SBytesSRows: When encryption is taking place the
module applies the SubBytes transformation first
and then the ShiftRows transformation on the input
data.
• ISRowsISBytes: When decryption is taking place
this module applies the Inverse ShiftRows transfor-
mation and then the Inverse SubBytes on the input
data.
• MixCols: Being used for encryption and implements
the MixColumns transformation.
OUTPP packetizes the algorithm result (128 to 512
bits) into blocks of 64 bytes so that they can be shifted
to the TX FIFO.
• IMixCols: Being used for decryption and implements
the Inverse MixColumns transformation.
HASH FUNC contains the logic implementing the fol-
lowing hash algorithms:
• MainFSM: The basic FSM that controls all previous
modules. In general controls the complete AES
encryption/decryption.
1. MD5: RFC1321
2. SHA-1: FIPS PUB 180-4
All parts of AES is implemented using hardware includ-
ing the Key Expansion part.
3. SHA-224/256: FIPS PUB180-4. In this case only
initialization changes.
14.1.3 Modes
4. SHA-384/512: FIPS PUB 180-4
The block “Modes” uses the AES in order to implement
the following modes of operations:
As depicted in Figure 48, HASH FUNC comprises com-
mon and specific resources for all algorithms.
• ECB (Electronic Code Book)
All registers are contained in the common resources.
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Also, 2 32-bit adders utilized by all hash algorithms are
part of the common resources.
M0
M4
M1
M5
M2
M6
M3
M7
A
C
E
G
B
D
F
H0
H2
H4
H6
H1
H3
H5
H7
M8
M9
M10
M14
M11
M15
M12
M13
H
M14
M15
64-bit registers
ADD0
ADD1
64-bit adders
COMMON
RESOURCES
FSM
ALGORITHM
SPECIFIC
RESOURCES
MD5
Functions
SHA-1
Functions
SHA-256
Functions
SHA-512
Functions
Constants
Figure 48: HASH FUNC architecture
14.2 PROGRAMMING
CRYPTO_KEYS memory.
The basic register for the programming of AES/HASH
engine is the CRYPTO_CTRL_REG. Select the crypto-
graphic algorithm by setting the CRYPTO_ALG regis-
ter. The mode of operation can be programmed by
choosing the suitable value for the CRYPTO_ALG_MD
register. When only the final block of the resulting data
must be stored at the memory, the user should set the
CRYPTO_OUT_MD=1. The encryption/decryption
In case of CRYPTO_AES_KEXP = 1,
CRYPTO_KEYS_START should be programmed with
the cipher key.
The source address is set by writing the
CRYPTO_FETCH_ADDR_REG register. The AES/
HASH engine reads the input data from this memory
location.
function
is
selected
by
programming
the
The destination address is set by writing the
CRYPTO_DEST_ADDR_REG register. The AES/
HASH engine writes the output data to this memory
location.
CRYPTO_ENCDEC register. If the selected algorithm
is the AES, the CRYPTO_AES_KEY_SZ register
should be used to set the key size of the algorithm. To
generate an interrupt request at the end of the opera-
tion, CRYPTO_IRQ_EN=1 should be set.
The
calculation
is
started
by
setting
CRYPTO_START_REG=1.
Proportionally with the selected cryptographic algo-
rithm and the selected mode of operation, read the
CRYPTO MREGs table and program the suitable regis-
ters with the parameters of the selected algorithms.
The end of calculation is indicated by the
CRYPTO_INACTIVE flag when
CRYPTO_MORE_IN=0. If not, the processing of the
current
data
input
is
denoted
by
Flag CRYPTO_AES_KEXP controls key expansion.
With CRYPTO_AES_KEXP=1, key expansion will be
performed by the dedicated hardware engine. Other-
wise key expansion should be performed by software
and generated keys should be stored into
CRYPTO_WAIT_FOR_IN.
When
CRYPTO_INACTIVE=1, the calculation is finished and
the resulting data are in the memory. When
CRYPTO_WAIT_FOR_IN=1 more data are to be pro-
cessed. In both cases, if CRYPTO_IRQ_EN=1, an
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interrupt request is generated.
To clear an interrupt request from the AES/HASH
engine, CRYPTO_CLRIRQ=1 should be programmed.
Table 30: Hash function selection
CRYPTO_
ALG_MD
CRYPTO_
ALG
For
the
hash
functions
field
activation,
in
the
the
Hash algorithm
CRYPTO_HASH_SEL
CRYPTO_CTRL_REG has to be set. When this bit is
set, the CRYPTO_ALG field refers to the hash algo-
rithms rather than the encryptions algorithms.
CRYPTO_ALG_MD selects between HASH algorithms
based on 32 or 64-bit arithmetic. Table 30 shows the
programming selection of the hash algorithms. With
means of the CRYPTO_HASH_OUT_LEN, the number
of bytes to be eventually used is defined. This number
is programmable ranging from 1 to 64.
00
00
00
00
01
01
01
01
00
01
10
11
00
01
10
11
MD5
SHA-1
SHA-256/224
SHA-256
SHA-384
SHA-512
SHA-512/224
SHA-512/256
Note that there are some restrictions for the number of
bytes to be processed (CRYPTO_LEN value) that are
related to the algorithm currently in use
(CRYPTO_HASH_SEL and CRYPTO_ALG), the mode
of operation (CRYPTO_ALG_MD) and whether there
are more data to be consumed (CRYPTO_MORE_IN)
as depicted in Table 31:
Table 31: Restrictions on CRYPTO_LEN
CRYPTO_LEN
CRYPTO_MORE_IN
= 0
CRYPTO_LEN
CRYPTO_MORE_IN
= 1
CRYPTO_
HASH_SEL
CRYPTO_
ALG_MD
ALGORITHM
CRYPTO_ALG
AES ECB
AES ECB
AES CTR
00
01
00
00
multiple of 16
multiple of 16
multiple of 16
multiple of 16
0
1
10
11
00
00
no restriction
no restriction
multiple of 16
multiple of 16
AES CBC
MD5
00
00
00
00
01
01
01
01
00
01
10
11
00
01
10
11
no restriction
no restriction
no restriction
no restriction
no restriction
no restriction
no restriction
no restriction
multiple of 8
multiple of 8
multiple of 8
multiple of 8
multiple of 8
multiple of 8
multiple of 8
multiple of 8
SHA-1
SHA-256/224
SHA-256
SHA-384
SHA-512
SHA-512/224
SHA-512/256
The amount of clock cycles required to perform a
HASH or an encryption/decryption/key expansion task,
is presented in Table 32:
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Table 32: Latency of various crypto algorithms
Clock Cycles for
256 kB (M)
Algorithm
Activity
Clock Cycles / Block
Block Size (bits)
MD5
Hash
231
281
423
423
565
565
565
565
54
512
0.95
SHA-1
Hash
512
1.15
SHA-256/224
SHA-256
SHA-384
SHA-512
SHA-512/224
SHA-512/256
AES-128
AES-128
AES-192
AES-192
AES-256
AES-256
Hash
512
1.73
Hash
512
1.73
Hash
1024
1024
1024
1024
1.16
Hash
1.16
Hash
1.16
Hash
1.16
Key Expansion
Encryption
Key Expansion
Encryption
Key Expansion
Encryption
86
128
128
128
1.41
1.65
1.92
59
101
70
117
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Features
15 ECC Engine
• RAM-based sequencer gives a maximum of flexibil-
ity and facilitates functional upgrades
The ECC Engine is a very flexible block based on a
4x4 array of Dual-Field Processing Elements (DFPEs)
that can be used to execute all operations & algorithms
required for Elliptic Curve Cryptography systems such
as Diffie-Hellman (ECD-H) Key Exchange and Elliptic
Curve Digital Signature Algorithm (ECDSA). The ECC
engine is flexible enough to support any other crypto
algorithm since it comprises a μ-Code based controller
which reads code from a dedicated RAM, making
upgrades possible.
• Supports arbitrary data/key sizes for ECC (up to 256
bits)
• Supports high-level PK Algorithms (ECDSA, ECDH,
EdDSA)
• Low memory requirements:
• 2 kBytes from system’s DataRAM
• 2 kBytes for the TCM
A powerful dedicated ALU consisting of 4 16x16 multi-
pliers (DFPEs) combined with an effective pipelining
scheme, allows for maximum throughput while preserv-
ing a small memory footprint. A Tightly Coupled Mem-
ory (TCM) assists in the intermediate results storage
without creating traffic on the system’s bus and mem-
ory.
• 3 kBytes for the μ-Code RAM (retainable)
• High throughput: 90 256-bit ECC-point multiplica-
tions per second at 96 MHz
The ECC engine comes with an APB interface for con-
figuration and a DMA engine for data transactions to
and from the DataRAM of the DA14681 without the
interference of the CPU.
Memory I/F
BLE
DataRAM
ECC_base_addr_reg
Memory I/F
ECC Engine
Tightly Coupled RAM
µ‐DMA
ALU
(4 DFPE blocks)
AHB Slave
AHB Slave
ECC Crypto Space
AHB Master
DSP Controller
CPU
Bridge
Command
µ‐Code Sequencer
µ‐Code RAM
Control &
Status
Registers
APB32
Figure 49: ECC Engine Block Diagram
15.1 ARCHITECTURE
address 0x50006000. Finally, it includes an memory
interface which directly connects to the memory con-
troller of the DA14681 and uses a memory space with
pre-defined base address as the buffer for data in and
data out such as e.g. curve parameters and signature
generation results. The pre-defined address is config-
ured by ECC_BASE_ADDR_REG which allocates
memory in pages of 1 kB.
The ECC controller comprises an AHB interface which
is used for downloading the respective curve into the 3
kB μ-Code RAM which can be retained during any
Sleep mode (PMU_CTRL_REG[RETAIN_ECCRAM]).
The source of this μ-Code might be the ECC Section of
the OTP header (Table 5) or any other RAM or FLASH
location. The μ-Code RAM base address is at
0x40030000. There is also, an APB32 interface which
is used for accessing the block’s registers at base
The DSP controller is responsible for the primitive cal-
culation with help of the ALU and its dedicated 2 kB of
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essary. At first the ECC Crypto Module needs to get
Bluetooth Low Energy 4.2 SoC
tightly coupled memory used to store intermediate vari-
ables.
started and initialized:
• Enable clock to the ECC Crypto Module at
CLK_AMBA_REG[ECC_CLK_ENABLE]
15.1.1 Supported curves
Due to the flexible architecture any curve should be
able to implement in μ-Code. The currently available
are:
• Specify address space inside DataRAM to be used
by the ECC block by programming the
ECC_BASE_ADDR_REG
• NIST recommended Curves:
• Prime Field P-192, P-224, P-256
• Binary Field K-163, K-233
• Binary Field B-163, B-233
• Brainpool and SEC2 Curves
• Curve25519
• Load micro code into ECC u-Code RAM starting at
address 0x40030000. The microcode itself can be
located in the OTP header inside the Elliptic curve
content section (ECS), or in the FLASH
• In case the interrupt is to be used, the corresponding
IRQ vector needs to be provided and the IRQ needs
to get enabled both in the Interrupt controller and the
ECC block by programming
• Average μ-Code size for these curves is 3 kB.
Before executing any arithmetic operation, all required
parameters, operands and data must be written in the
shared memory whose address is defined at
ECC_BASE_ADDR_REG.
• Average clock cycle amount for executing each
curve is 100 k cycles
15.1.2 Supported high level algorithms
Depending on the operations to execute, some param-
eters or operands (like the prime modulus N or P) must
be located in pre-defined/fixed addresses while some
other input/output operands and results can be passed
to/from programmable addresses by using specific
A number of cryptography algorithms involving other
hardware resources than just the ECC are available as
described in Table 33, including their latency in system
clock cycles:
pointers
(ECC_OPPTRA,
ECCOPPTRB
and
ECC_OPPTRC) in the configuration register
ECC_CONFIG_REG.
Table 33: ECC algorithms latency
ECC
The programming flow is illustrated in Figure 50.
Please note that the size of the individual operands
must not exceed 256bit. However operand widths of
64bit as well as 128bit are also supported. In the arith-
metic unit all operands are executed on blocks whose
length is a multiple of 64bit. If needed input data that
are written in memory must be extended with zeroes to
get the right length (defined size of operands). Data is
stored in the crypto memory following the little endian
format.
Algorithm
Routine
cycles
(M)
JPAKE-p256 step1_generate
step1_verify
4.5
4.5
2.3
2.3
2.3
0.7
0.7
1.4
0.5
0.5
1.1
1.1
1.1
1.15
2.3
1.1
1.2
2.2
step2_generate
step2_verify
seskey_generate
EdDSA -
Ed25519
pk_generate
sign_generate
sign_verify
15.2.1 Example: ECDSA signature generation
As explained in the previous section, some of the
parameters or operands need to be available at prede-
fined fixed addresses before starting the execution of
the ECDSA signature generation. They all reside in the
ECC crypto space in the DataRAM. Table 34 describes
the actual sequence of the steps required and their
respective commands.
ECDH -
Curve25519
pk_generate
seskey_generate
pk_generate
seskey_generate
pk_generate
sign_generate
sign_verify
ECDH -
P256
ECDSA -
P256
ECKCDSA - pl_generate
P256
sign_generate
sign_verify
15.2 PROGRAMMING
In order to interact with the ECC several steps are nec-
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Figure 50: ECC programming flow
Table 34: ECDSA Signature Generation Process
Step Operation
Command
1
2
select k<n
Use TRNG block
Use HASH block
Compute h = SHA-1(m)
Store h
3
4
Compute P = k.G
P (x , y ) = k.G(x , y ) = Point_Mul(k, G)
1 1 1 G G
1
Compute r = x mod n
r = MODRED(x ,n)
1
1
If r=0 then go to Step 1
Check_r
-1
5
6
w = MODINV(k,n)
Compute w = k mod n
-1
d.r = MODMUL(d, r, n)
h+d.r = MODADD(h, d.r, n)
s = MODMUL(kinv, h+d.r, n)
Compute s = k (h + d.r) mod n
If s=0 then go to Step 1
7
(r, s) is the signature for the message m
Check Status Register (ECC_STATUS_REG[ECC_BUSY])
where:
Table 35: ECC ECDSA Signature Generation
memory layout
• G(x , y ) is the generator point of the elliptic curve
G
G
chosen,
Addr Operand
Note
• n is the order of point G
• h is the 160 bits hash digest of the message m
• d is the private key (d < n)
0x4
0x5
0x6
0x7
0x8
a
Pre-defined
Pre-defined
Pre-defined
Pre-defined
b
d (private key)
k
The layout of the ECDSA signature generation in terms
of the actual parameters and operands to be used by
the u-Code is shown in Table 35:
x /Q(x) Public Key
Q
0x9
y /Q(y) Public Key
Q
Table 35: ECC ECDSA Signature Generation
memory layout
0xA
0xB
0xC
r
Result
s
Result
Addr Operand
Note
h = SHA-1(m)
Pre-defined
0x0
0x1
0x2
p or q or
n
Pre-defined
Pre-defined
Pre-defined
0xD
0xE
w
P (x)=(k.G)(x)
x /G(x)
1
G
0xF
P (y)=(k.G)(y)
1
0x3
y /G(y)
Pre-defined
G
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Parameters or operands noted as “Pre-defined” should
be available at this specific pre-defined fixed address
before generating the ECDSA Signature. The actual
signature (r, s) is available at locations 0xA and 0xB.
The memory layout shown in Table 35 represents the
actual memory description of the shared ECC memory
(part of the DataRAM).
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Features
16 True Random Number Generator
(TRNG)
The TRNG is a non-deterministic Random Number
generator used to provide the seed for encryption pro-
cesses.
• Optional NIST SP800-90A Hash_DRBG post pro-
cessing using SHA-256 function using the on-chip
HW accelerators
• Random numbers access through 32x32 bits FIFO
on AHB bus
Its output can be used as entropy input for a FIPS 140-
2 approved deterministic random number generation
process which is handled by SW and HW accelerators
of the DA14681.
• Dedicated TRNG_IRQ Interrupt line
• Start-up time 512 pclk cycles per 32 random bits
• Clock enable signals for optimal power saving
The TRNG contains oscillator rings in digital logic
which combined create metastability on a Flip-Flop
eventually being the source of the entropy bits.
CLK_AMBA_REG[TRNG_CLK_ENABLE]
ahb_clk
TRNG
Ring Oscillators
. . .
TRNG_CLK
FIFO (32b x 32)
AHB
Shift
Register
. . .
. . .
AHB Interface
APB Interface
APB32
Control & Status
Registers
TRNG_CLK
TRNG_CTRL_REG[TRNG_ENABLE]
TRNG_IRQ
Figure 51: TRNG block diagram
16.1 ARCHITECTURE
4. Poll TRNG_FIFOLVL_REG which provides the
amount of data in the FIFO, or wait for the
TRNG_IRQ
Figure 51 shows the TRNG block diagram.
The TRNG comprises a number oscillator rings con-
sisting of several inverters each. The output of the
oscillator rings are accumulated in a shift register for
whitening before being stored in a 32x32 bits deep
FIFO. The oscillator rings are enabled when the
TRNG_CTRL_REG[TRNG_ENABLE] is set and as
long as the FIFO is not full.
5. Read the random number from the TRNG FIFO
at address 0x40040000 (TRNG_M)
6. To save power, set TRNG_CLK_EN=0 and set
TRNG_ENABLE=0. The FIFO can only be
accessed if TRNG_CLK_EN=1
Note that, all signals are handled following the little-
endian format. That means that the Least Significant
Byte (LSB) is stored at the lowest address.
The 32-bit random numbers are accessible via an AHB
interface while the registers are accessible via the
APB32 interface.
16.2.1 Latency
16.2 PROGRAMMING
After TRNG_CTRL_REG[TRNG_ENABLE] is set to 1,
it takes 512 pclk clock cycles/FIFO entry. So for 32
FIFO entries 512x32 = 16K pclk clock cycles or 1 ms if
the 16 MHz clock is used.
There is a simple sequence of steps that need to be
followed to program the TRNG engine:
1. Set CLK_AMBA_REG[TRNG_CLK_EN]=1 to
enable the AHB bus access
2. Set TRNG_CTRL_REG[TRNG_MODE]=0 to
selects the ring oscillators rather then a pseudo
random generator
3. Set TRNG_CTRL_REG[TRNG_ENABLE]=1 to
start the random number generation. This signal
is ignored when the FIFO is already full
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17 Temperature Sensor
The DA14681 has a built-in temperature sensor which
is part of the charging circuit and protects the die
against too high temperature. It can however be used
as a temperature sensor even if the charging circuit is
not activated.
Features
• Supply voltage 1.9 V - 3.6 V
o
o
• Temperature range -40 C to 100 C
o
• Uncalibrated (3 sigma) accuracy of +/- 17 C
o
• Accuracy after 1 point calibration +/- 8.8 C. (Assum-
ing perfect reference temperature)
o
• Accuracy after 2 points calibration +/-4 C. (Assum-
ing perfect reference temperature)
17.1 PROGRAMMING
The temperature sensor can be read out through the
GPADC, even when the charger is off, by setting:
• CHARGER_CTRL2_REG[CHARGER_TEST]=1
• GP_ADC_CTRL_REG[GP_ADC_SEL]=14
The formulas which provide the relation between ADCx
o
values (in LSBs) and the actual temperature Tx (in C)
are explained below.
For uncalibrated measurements:
• T = (ADC - 712)/2.44
x
x
For one point calibration measurements:
• Measure T with a thermometer, and read
1p_cal
ADC
1p_cal
• T = T
+ (ADC - ADC
) / 2.44
1p_cal
x
1p_cal
x
For two points calibration measurements:
• Measure T
with a thermometer, and read
2p_cal_1
ADC
2p_cal_1
• Measure T
ADC
with a thermometer, and read
2p_cal_2
It is recommended that T
-
2p_cal_2
2p_cal_2.
o
T
> 40 C to achieve best accuracy.
2p_cal_1
• Calculate T = (ADC
- ADC
) /
c
2p_cal_2
2p_cal_1
(T
T
)
2p_cal_2 - 2p_cal_1
• T = T
+ (ADC - ADC
) / T
x
2p_cal_1
x
2p_cal_1 c
Please note that, while measuring and/or calibration,
the system’s power dissipation should be kept the
same, or else the measurement is affected by the inter-
nal thermal gradient.
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The block diagram illustrating the Wake Up function is
Bluetooth Low Energy 4.2 SoC
18 Wakeup Timer
The Wakeup Timer can be programmed to wake up the
DA14681 from power down mode after a pre-pro-
grammed number of GPIO events.
shown in Figure 52.
Features
• Monitors any GPIO state change
• Implements debouncing time from 0 upto 63 ms
Each of the GPIO inputs can be selected to generate
an event by programming the corresponding
• Accumulates external events and compares the
number to a programmed value
WKUP_SELECT_Px_REG
register.
When
all
WKUP_SELECT_Px_REG registers are configured to
generate a wakeup interrupt, a toggle on any GPIO will
wake up the system.
• Generates an interrupt to the CPU
The input signal edge can be selected by programming
the WKUP_POL_Px_REG register.
P0_0
wkup_pol_p0_reg[0]
+
wkup_select_p0_reg[0]
&
.
DEBOUNCE TIMER
key_hit
EVENT
COUNTER
.
.
WkUP_GPIO_IRQ
P4_7
wkup_pol_p4_reg[7]
>
+
wkup_select_p4_reg[7]
&
WKUP_COMPARE_REG
wkup_ctrl_reg[6]
Figure 52: Wakeup Timer block diagram
A LOW to HIGH level transition on the selected input
port, while WKUP_POL_Px_REG[y] = 0, sets internal
signal “key_hit” to ‘1’. This signal triggers the event
counter state machine as shown in Figure 53.
The debounce timer is loaded with value
WKUP_CTRL_REG[WKUP_DEB_VALUE]. The timer
counts down every 1 ms. If the timer reaches 0 and the
“key_hit” signal is still ‘1’, the event counter will be
incremented.
If the event counter is equal to the value set in the
WKUP_COMPARE_REG register, the counter will be
reset and an interrupt will be generated, if it was ena-
bled by WKUP_CTRL_REG[ENABLE_IRQ].
The interrupt can be cleared by writing any value to
register WKUP_RESET_IRQ_REG.
The event counter can be reset by writing any value to
register WKUP_RESET_CNTR_REG.
The value of the event counter can be read at any time
by reading register WKUP_COUNTER_REG.
The event counter is edge sensitive. After detecting an
active edge a reverse edge must be detected first
before it goes back to the IDLE state and from there
starts waiting for a new active edge.
RST
IDLE
key_hit = 1
timer = DEBOUNCE
key_hit = 0 and
timer = 0
key_hit = 0
KEY_PRESSED
timer not 0
key_hit = 1
key_hit = 1 and
timer = 0
event_count = event_count +1
KEY_RELEASE
Figure 53: Event counter state machine for the Wakeup interrupt generator
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• Single-ended as well as differential input with two
Bluetooth Low Energy 4.2 SoC
19 General purpose ADC
input scales
The DA14681 is equipped with a high-speed ultra low
power 10-bit general purpose Analog-to-Digital Con-
verter (GPADC). It can operate in unipolar (single
ended) mode as well as in bipolar (differential) mode.
The ADC has its own voltage regulator (LDO) of 1.2 V,
which represents the full scale reference voltage.
• Eight single-ended or two differential external input
channels
• Oversampling up to 128 steps providing effectively
up to 11.2 bits precision (ENOB)
• Battery monitoring function
• Chopper function
Features
• 10-bit dynamic ADC
• Maximum sampling rate 4 Msample/s
• Offset and zero scale adjust
• Common-mode input level adjust
• DMA support
• Ultra low power (5 A typical supply current at
100 ksample/s)
GP_ADC_SEL
General Purpose ADC
Scaler
VBAT
(5V to 1.2V)
TESTBUS
AVS
GP_ADC_SE
V12
V14
V33
1
0
GP_ADC_ATTN3X
P0_6
P0_7
P1_0
P2_4
GP_ADC_EN
1.2V
LDO
P1_2
P1_4
GP_ADC_MINT
P1_3
P1_5
GP_ADC_ATTN3X
Vref=1.2V
ADC_IRQ
GP_ADC_INT
ADC_DMA_REQ
160 kOhm
P1_2
GP_ADC_RESULT_REG
ADC
16bit
80 kOhm
80 kOhm
160 kOhm
P1_3
GP_ADC_SE
GP_ADC_SMPLS_REG
P1_4
P0_7
GP_ADC_ATTN3X
GP_ADC_ATTN3X
Figure 54: Block diagram of the General Purpose ADC
19.1 ARCHITECTURE
(ADC_DMA_REQ)
The ADC architecture shown in Figure 54 has the fol-
lowing sub blocks:
• ADC Input channels selector. Up-to eight specific
GPIO ports, battery voltage (VBAT1) and the analog
ground level (AVS) can be measured.
• Analog to Digital converter (ADC)
The ADC has the following modes of operation as
shown in Figure 55:
• ADC analog part internally clocked with 100 MHz
(default) or the ADC_CLK selectable with
GP_ADC_CTRL_REG[GP_ADC_CLK_SEL]
• Manual mode
• ADC logic part clocked with the ADC_CLK (16
MHz or 96 MHz) with
CLK_PER_REG[ADC_CLK_SEL]
• Continuous mode
In both modes the ADC performance might be
increased by enabling:
• 1.2V LDO for the ADC supply with a high PSRR ena-
bled with GP_ADC_CTRL_REG[GP_ADC_EN]
• Oversampling mode
• Chopper mode
• APB Bus interface clocked with the APB clock. Con-
trol and status registers are available through regis-
ters GP_ADC_*
• Maskable Interrupt (ADC_IRQ) and DMA request
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START
ADC_EN=1
cntr = GP_ADC_EN_DEL
Yes
No
No
cntr‐‐
cntr ==0
ADC_LDO_1V2
start‐up
GP_ADC_START==1
Wait for initual
Star
conv_nr = 2**GP_ADC_CONV_NRS
cntr = 32*GP_ADC_SMPL_TIME
Yes
ADC
Sample time
No
cntr‐‐
cntr ==0
ADC
Conversion
ADC Conversion
cntr = GP_ADC_STORE_DEL
Yes
No
cntr ==0
No
ADC
Store delay
No
cntr‐‐
ADC_READY
cntr ==0
tmp_result += ADC value
Oversampling
Mode
No
conv_nr‐‐
conv_nr==0
Yes
Delay =
GP_ADC_INTERVAL*1.024 ms
GP_ADC_RESULT=
average(tmp_result)
No
ADC_IRQ_EN=1
DMA Request =1
Yes
GP_ADC_INTERVAL==0
Continuous
Mode
No
GP_ADC_CONT==0
Yes
GP_ADC_START=0
STOP
Figure 55: GPADC operation flow diagram
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19.2 INPUT CHANNELS AND INPUT SCALE
channels
is
selected
via
bit
GP_ADC_CTRL_REG[GP_ADC_SE]. In differential
mode the voltage difference between two GPIO input
The DA14681 has a multiplexer between the ADC and
eight specific GPIO ports which can be sampled. Fur-
thermore, the ADC can also be used to monitor the
battery voltage (VBAT1) and the analog ground level
(AVS).
ports
will
be
converted
via
bit
GP_ADC_CTRL2_REG[GP_ADC_ATTN3X] the input
scale can be enlarged by a factor of three, as summa-
rized in Table 36.
Single-ended or differential operation for the external
Table 36: GPADC input channels and voltage scale
GP_ADC_ATTN3X
GP_ADC_SE
Input channels
Input scale
Input limits
0
1
P0_6, P1_0, P0_7, P2_4, P1_2,
P1_3, P1_4, P1_5
0 V to +1.2 V
-0.1 V to +1.3 V
0
1
0
1
[P1_2, P1_4], [P1_3, P0_7]
-1.2 V to +1.2 V
0 V to +3.6 V
-1.3 V to +1.3 V
-0.1 V to +3.45 V
P0_6, P1_0, P0_7, P2_4, P1_2,
P1_3, P1_4, P1_5
1
0
[P1_2, P1_4], [P1_3, P0_7]
-3.6 V to +3.6 V
-3.45 V to +3.45 V
19.3 STARTING THE ADC
on the software code style. The fastest code can han-
dle the data in four clock cycles of 16 MHz, resulting to
a highest sampling rate of 16 MHz/5 = 3.3 Msample/s.
The GPADC is a dynamic ADC and consumes no static
power, except for the LDO which consumes less than 5
A.
At full speed the ADC consumes approximately 50 A.
If the data rate is less than 100 ksample/s, the current
consumption will be in the range of 5 A.
Enabling/disabling of the ADC is triggered by configur-
ing bit GP_ADC_CTRL_REG[GP_ADC_EN]. When
set, first the LDO is enabled, then after the delay value
set in GP_ADC_CTRL3_REG[GP_ADC_EN_DEL]
(recommended value is 20us to account for LDO set-
tling time) the ADC will be enabled and an AD-conver-
sion can be started.
19.4.2 Continuous Mode
Setting GP_ADC_CTRL_REG[GP_ADC_CONT] to '1'
it is possible to use the ADC in a continuous mode
meaning that a new conversion will be started after the
previous conversion has finished without using the
GP_ADC_START bit. Still the GP_ADC_START bit is
needed to trigger the first conversion but following that,
new converted data will be generated automatically. To
correctly terminate this mode it is required to disable
the GP_ADC_CONT bit first and afterwards wait until
the GP_ADC_START bit is cleared so the ADC is in a
See Table 37 for recommended values.
The ADC LDO consumes about 5A, so GP_ADC_EN
must be must be set to 0 if the ADC is not used.
Table 37: ADC_LDO_1V2 start-up time
ADC_CLK (MHz) GP_ADC_EN_DEL Delay (s)
defined
state.
By
using
GP_ADC_CTRL3_REG[GP_ADC_INTERVAL] it is
possible to determine the time interval between con-
versions. If kept zero, the conversion will be restarted
immediately. With values different than zero, it is possi-
ble to program how many milliseconds it should take
16
96
0x0B
0x40
22.0
21.3
19.4 ADC CONVERSION MODES
19.4.1 Manual Mode
before
restarting
a
new
conversion.
If
GP_ADC_INTERVAL is not zero, it can take up to one
millisecond before the first conversion is executed
because it is synchronized to a one millisecond peri-
odic signal.
Each conversion has two phases: the sampling phase
and the conversion phase. When bit
GP_ADC_CTRL_REG[GP_ADC_EN] is set to ‘1’, the
ADC samples the selected input voltage. Writing a '1' at
bit GP_ADC_CTRL_REG[GP_ADC_START] ends the
sampling phase and triggers the conversion phase.
When the conversion is ready, the ADC resets bit
GP_ADC_START to ‘0’ and returns to the sampling
phase asserting the interrupt line GP_ADC_INT. SW
should always check that GP_ADC_START=0 before
starting a new conversion.
19.5 NON-IDEAL EFFECTS
Besides Differential Non-Linearity (DNL) and Integral
Non-Linearity (INL), each ADC has a gain error (linear)
and an offset error (linear). The gain error of the
GPADC slightly reduces the effective input scale (up to
50 mV). The offset error causes the effective input
scale to become non-centred. The offset error of the
GPADC is less than 20 mV and can be reduced by
chopping or by offset calibration.
The conversion itself is fast and takes approximately
one clock cycle of 16 MHz, though the data handling
will require several additional clock cycles, depending
The ADC result will also include some noise. If the
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input signal itself is noise free (inductive effects
included), the average noise level will be ±1 LSB. Tak-
ing more samples and calculating the average value
will reduce the noise and increase the resolution.
four least significant bits can be discarded. T
Table 38: Oversampling mode effective number of
bits
With a 'perfect' input signal (e.g. if a filter capacitor is
placed close to the input pin) most of the noise comes
from the low-power voltage regulator (LDO) of the
ADC. Since the DA14681 is targeted for ultra-compact
applications, there is no pin available to add a capaci-
tor at this voltage regulator output.
Effective number of bits
(ENOB) in
(GP_ADC_CONV_NRS) GP_ADC_RESULT_RE
G
Oversampling
1
9.05
2
9.45
The dynamic current of the ADC causes extra noise at
the regulator output. This noise can be reduced by set-
ting bits GP_ADC_CTRL2_REG[GP_ADC_I20U] and
GP_ADC_CTRL2_REG[GP_ADC_IDYN] to ‘1’. Bit
GP_ADC_I20U enables a constant 20 A load current
at the regulator output so that the current will not drop
to zero. Bit GP_ADC_IDYN enables a 10 A load cur-
rent during sampling phase so that the load current
during sampling and conversion phase becomes
approximately the same.
4
9.83
8
10.21
10.52
10.85
11.10
11.27
16
32
64
128
The preferred settings for acquiring the results of Table
38 are presented in Table 39:
19.6 SAMPLING TIME (SMPL_TIME)
The default ADC sampling time is sufficient in normal
operation to achieve 10 bit accuracy. If ATTN3X is ena-
bled or the VBAT channel is selected, additional (inter-
nal) resistance is routed in series with the sampling
capacitor, therefore it requires more time to settle to the
same accuracy. In general, enabling ATTN3X results in
a time-constant t=60 nsec, and sampling VBAT has a
time-constant t=500 nsec. The total sampling time
required for a given accuracy can be calculated using:
Table 39: Preferred settings for ENOB
measurements
Description
Register Setting
Run digital at PLL speed PLL_SYS_CTRL1_REG[
PLL_EN]=1
N
T_sample = -ln(1.2/2 )*t, where N is the desired accu-
Use internal 100MHz
clock as SAR clock.
GP_ADC_CTRL_REG[G
P_ADC_CLK_SEL]=0
racy in bits and t the time-constant mentioned before.
The corresponding value for the SMPL_TIME can than
easily be determined e.g. sampling VBAT with 10b
Use auto zero and refer- GP_ADC_CTRL_REG[G
ence sampling in the
P_ADC_LDO_ZERO]=1
accuracy
SMPL_TIME=2, or ATTN3X enabled requires
SMPL_TIME=1 for 10b accuracy when
and
ADC_CLK=16MHz
requires
LDO to suppress noise
Disable chopping
(default)
GP_ADC_CTRL_REG[G
P_ADC_CHOP]=0
ADC_CLK=16MHz. Obviously, when oversampling is
used, the expected accuracy increases. Most of the
times, setting SMPL_TIME to “1” or “2” will be suffi-
cient. If VBAT is selected, SMPL_TIME=3 is the pre-
ferred value when oversampling (this gives 11b
sampling accuracy).
Sign is not inverted
(default)
GP_ADC_CTRL_REG[G
P_ADC_SIGN]=0
Measure single ended
GP_ADC_CTRL_REG[G
P_ADC_SE]=1
Single-Ended: P1[2]
GP_ADC_CTRL_REG[G
P_ADC_SEL]=0
19.7 OVERSAMPLING
In this mode multiple successive conversions will be
executed and the results are added together to
increase the effective number of bits (ENOB). The
number of conversions that are executed is program-
Enable dynamic LDO
current load
GP_ADC_CTRL2_REG[
GP_ADC_IDYN]=1
Enable static LDO 20A
current load
GP_ADC_CTRL2_REG[
GP_ADC_I20U]=1
mable
GP_ADC_CTRL2_REG[GP_ADC_CONV_NRS]. The
six least significant bits inside the
at
32 ADC clock cycles
sampling time
GP_ADC_CTRL2_REG[
GP_ADC_SMPL_TIME]=
1
GP_ADC_RESULT_REG can be discarded if no over-
sampling is used. But if, for example, four samples are
programmed, two extra bits are generated and only the
Negative Offset centred
(zero offset)
GP_ADC_OFFN_REG=
0x200
Positive Offset centred
(zero offset)
GP_ADC_OFFP_REG=
0x200
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sign of the ADC input and output is changed. Two sign
Bluetooth Low Energy 4.2 SoC
19.8 CHOPPING
changes have no effect on the signal path, though the
sign of the ADC offset will change.
Chopping is a technique to cancel offset by taking two
samples with opposite signal polarity. This method also
smooths out other non-ideal effects and is recom-
mended for DC and slowly changing signals.
If adc_off_p = 3.5 the ADC_result with opposite
GP_ADC_SIGN will be 508. The sum of these equals
515 + 508 = 1023. This is the mid-scale value of an 11-
bit ADC, so one extra bit due to the over-sampling by a
factor of two.
Chopping
is
enabled
by
setting
bit
GP_ADC_CTRL_REG[GP_ADC_CHOP] to ‘1’.
The mid-scale value of the ADC is the 'natural' zero
point of the ADC (ADC result = 511.5 = 1FF or 200 Hex
= 01.1111.1111 or 10.0000.0000 Bin). Ideally this corre-
The LSB of this 11-bit word should be ignored if a 10-
bit word is preferred. In that case the result is 511.5, so
the actual output value will be 511 or 512.
sponds to V = 1.2V/2 = 0.6 V in single-ended mode
i
and V = 0.0 V in differential mode.
i
19.9 OFFSET CALIBRATION
If bit GP_ADC_CTRL2_REG[GP_ADC_ATTN3X] is set
to ‘1’, the zero point is 3 times higher (1.8 V single-
ended and 0.0 V differential).
A relative high offset caused by a very small dynamic
comparator (up to 20 mV, so approximately 20 LSB).
This offset can be cancelled with the chopping function,
but it still causes unwanted saturation effects at zero
scale or full scale. With the GP_ADC_OFFP and
GP_ADC_OFFN registers the offset can be compen-
sated in the ADC network itself.
With bit GP_ADC_CTRL_REG[GP_ADC_MUTE], the
ADC input is switched to the centre scale input level,
so the ADC result ideally is 511.5 . If instead a value of
515 is observed, the output offset is +3.5 (adc_off_p =
3.5).
To calibrate the ADC follow the steps in Table 40.
With bit GP_ADC_CTRL_REG[GP_ADC_SIGN] the
Table 40: GPADC calibration procedure for single-ended and differential modes
Step
Single-ended mode (GP_ADC_SE = 1)
Differential mode (GP_ADC_SE = 0)
1
Set GP_ADC_OFFP = GP_ADC_OFFN=0x200;
GP_ADC_MUTE = 0x1; GP_ADC_SIGN = 0x0
Set GP_ADC_OFFP=GP_ADC_OFFN = 0x200;
GP_ADC_MUTE = 0x1; GP_ADC_SIGN = 0x0
2
3
4
5
6
7
Start conversion
Start conversion
adc_off_p = GP_ADC_RESULT - 0x200
Set GP_ADC_SIGN = 0x1
Start conversion
adc_off_p = GP_ADC_RESULT - 0x200
Set GP_ADC_SIGN = 0x1
Start conversion
adc_off_n = GP_ADC_RESULT - 0x200
adc_off_n = GP_ADC_RESULT - 0x200
GP_ADC_OFFP = 0x200 - 2*adc_off_p
GP_ADC_OFFN = 0x200 - 2*adc_off_n
GP_ADC_OFFP = 0x200 - adc_off_p
GP_ADC_OFFN = 0x200 - adc_off_n
Note: The average of GP_ADC_OFFP and GP_ADC_OFFN should be 0x200 (with a margin of 20 LSB)
It is recommended to implement the above calibration
routine during the initialization phase of the DA14681.
To verify the calibration results, check whether the
GP_ADC_RESULT value is close to 0x200 while bit
GP_ADC_MUTE = 1.
margin up to 50 mV) according to Table 41.
Table 41: Common Mode adjustment
CM Voltage
GP_ADC_OFFP = GP_ADC_OFFN
(Vccm)
19.10 ZERO-SCALE ADJUSTMENT
0.3 V
0x300
0x200
0x100
The GP_ADC_OFFP and GP_ADC_OFFN registers
can also be used to set the zero-scale or full-scale
input level at a certain target value. For instance, they
can be used to calibrate GP_ADC_RESULT to 0x000
at an input voltage of exactly 0.0 V, or to calibrate the
zero scale of a sensor.
0.6 V
0.9 V
Any other common mode level between 0.0 V and
1.2 V can be calculated from the table above. Offset
calibration can be combined with common mode
adjustment by replacing the "0x200" value in the offset
calibration routine by the value required to get the
appropriate common mode level.
19.11 COMMON MODE ADJUSTMENT
The common mode level of the differential signal must
be 0.6 V (or 1.8 V with GP_ADC_ATTN3X = 1). If the
common mode input level of 0.6 V cannot be achieved,
the common mode level of the GP_ADC can be
adjusted (the GP_ADC can tolerate a common mode
Note: The input voltage limits for the ADC in differential
mode are: -1.3 V to +1.3 V (for GP_ADC_ATTN3X = 0,
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see Table 36). The differential input range of the ADC
is: -1.2 V < V[P0_0,P0_1] < +1.2 V. Therefore, if Vcmm
< 0.5 V or Vcmm > 0.7 V, the input can no longer cover
the whole ADC range.
19.12 INPUT IMPEDANCE, INDUCTANCE, AND
INPUT SETTLING
The GPADC has no input buffer stage. During sam-
pling phase a capacitor of 1 pF (0.5 pF in differential) is
switched to the input line. The pre-charge of this
capacitor is at mid-scale level so the input impedance
is infinite.
At 100 ksample/s, zero or full-scale single-ended input
signal, this sampling capacitor will load the input with:
I
= V * C * f = ±0.6 V * 1 pF * 100 kHz = ±60 nA
LOAD
S
(differential: ±1.2 V * 0.5 pF * 100 kHz = ±60 nA at both
pins).
During sampling phase a certain settling time is
required. A 10-bit accuracy requires at least 7 time
constants of the output impedance of the input signal
source and the 1 pF sampling capacitor. The conver-
sion time is approximately one clock cycle of 16 MHz
(62.5 ns).
7 * R
=> R
* 1 pF - 62.5 ns < 1/f
S
OUT
OUT
< (1 + 62.5 ns * f ) / (7 * 1 pF * f )
S
S
Examples:
R
R
< 8.9 M at f = 100 kHz
OUT
OUT
S
< 890 k at f = 1 MHz
S
The inductance from the signal source to the ADC
input pin must be very small. Otherwise, filter capaci-
tors are required from the input pins to ground (differ-
ential mode: from pin to pin).
To observe the noise level of the ADC and the voltage
regulator, bit GP_ADC_CTRL_REG[GP_ADC_MUTE]
must be set to ‘1’. The noise should be less than ±1
LSB on average, with occasionally a ±2 LSB peak
value. If a higher noise level is observed on the input
channel(s), applying filter capacitor(s) will reduce the
noise.
The 3x input attenuator is realized with a resistor
divider
network.
When
bit
GP_ADC_CTRL_REG2[GP_ADC_ATTN3X] is set to
‘1’, the input impedance of the selected ADC input
channel becomes 300 k (typical) instead of infinite.
Bluetooth Low Energy
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• SRC_IN, SRC_OUT Sample rates 62.5 kHz to 16
Bluetooth Low Energy 4.2 SoC
20 Sample Rate Converter (SRC)
MHz
The SRC is a HW accelerator used to convert the sam-
ple rate of audio samples between various interfaces.
Its primary purpose is to directly connect PCM and
PDM channels while converting the rate accordingly. It
can provide up or down sampled streams to other inter-
faces like USB by means of the AMBA bus.
• SNR > 100 dB
• Single Buffer I/O with DMA support
• Automatic mode to adjust sample rate to the applied
frame sync (e.g. PCM_FSC)
• Manual mode to generate interrupts at the pro-
grammed sample rate. Adjustment is done by SW
based on buffer pointers drift (e.g for USB)
Features
• Supported conversions:
• SRC_IN (24 bits) to SRC_OUT (24 bits)
• PDM_IN (1bit) to SRC_OUT (24 bits)
• SRC_IN (24 bits) to PDM_OUT (1 bit)
• SRC runs at 16 MHz
SRC
PCM
2x24
0 = Off
2x24
2x24
1 = PCM1_IN1[31‐8], PCM1_IN2[31‐8]
SRC1_OUT1_REG[31‐8]
SRC1_IN1_REG[31‐8]
SRC1_OUT1_REG[31‐8], SRC1_OUT2_REG[31‐8]
SRC1_OUT2_REG[31‐8]
SRC1_IN2_REG[31‐8]
2x24
PCM
Down sampler
2 = SRC1_IN1_REG[31‐8], SRC1_IN2_REG[31‐8]
PCM
Up sampler
SRC_IN_SYNC
SRC_OUT_SYNC
0 = Off
1 = PCM_SYNC
Fs_clock
auto_sync_in
man_sync_in
1
0
Fs_clock
Sync
Gen
man_sync_out
0
1
SRC1_OUT_FS_REG[23‐0]
PCM_SYNC
SRC_IN_AMODE
SRC_OUT_AMODE
APU_MUX_REG[SRC_IN_MUX]
Sync
Gen
SRC1_IN_FS_REG[23‐0]
PDM
Down
sampler
PDM
upsampler
5 = PDM_IN
PDM_OUT
Inter
polator
5 = PDM_CLK
APU_MUX_REG[SRC_IN_MUX]
PDM_CLK
Figure 56: Sample rate Converter block diagram
20.1 ARCHITECTURE
20.1.1 I/O channels
routed to the PCM. This input selection of these multi-
plexers is also controlled by APU_MUX_REG.
20.1.3 Input and Output Sample rate conversion
The SRC block converts two 24 bits channels either as
a stereo pair or as two mono channels. The PCM linear
data pairs are received on SRC_IN and the output is
2x24 bits left aligned on SRC_OUT. The two 1 bit PDM
data inputs are received on PDM_IN and are converted
to 2x24 bits, left aligned to SRC_OUT or PDM_OUT.
The SRC has a sample rate converter on the input and
one at the output. Depending on the use case the con-
verters operate in either manual or automatic conver-
sion mode. This mode can be set in the
SRC_CTRL_REG bits SRC_IN_AMODE and bit
SRC_OUT_AMODE.
20.1.2 I/O multiplexers
20.1.4 SRC conversion modes of operation
The SRC can operate in two mode of operation:
• Manual mode
The SRCx_IN input multiplexer (Figure 56) is con-
trolled by APU_MUX_REG. The input of these multi-
plexers either come from the audio interfaces of from
registers SRC_IN1_REG and SRC_IN2_REG. The
data to these register is left aligned, bits 31-8 are
mapped on bits 23-0 of the SRC.
• Automatic mode
In manual mode the sample rate to convert to is deter-
The 24 bits SRCs outputs can be read in
SRC_OUT1_REG and SRC_OUT2_REG and is also
mined by the values in the SRC_IN_FS_REG,
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SRC_OUT_FS_REG.
20.1.5 DMA operation
Manual mode is used for sample rate conversion to/
from the e.g. USB. The CPU compares the buffer point-
ers of the USB transmit buffers with the e.g PDM
receive buffer pointers. If the pointers drift, the PDM
sample rate is adjusted in the SRC_OUT_FS_REG.
Hence, in the SRC_OUT_SYNC interrupt service rou-
tine, the PDM samples are read.
If more than one sample must be transfer to/from the
CPU or the sample rate is so high that it interrupt the
CPU too often, the DMA controller must be engaged to
perform the transactions.
20.1.6 Interrupts
After a Sample Rate conversion the input upsampler
and output down sampler generate edge triggered
interrupts on SRC_IN_SYNC and SRC_OUT_SYNC to
the CPU which do not have to be cleared. Note that
only one sample shall be read from or written to a sin-
gle register at a time (i.e. there are no FIFOs included).
In automatic mode, the sample rate is adjusted
according to the rate at which the samples are read
from, or written to the SRC. For instance, if PCM slave
data is transmitted to USB, PCM_IN is selected in the
SRC_IN_MUX. The SRC_IN is set to automatic mode
to convert sample receive at PCM_FSC rate. The
SRC_OUT is also set to automatic mode. In the
SRC_OUT_SYNC interrupt service routine, the PCM
samples are read and the rate is determined by the
main counter MAIN_CNT (8-192kHz)
20.1.7 SRC use cases
Table 42 shows typical use cases of the Sample Rate
Converter.
Typical use cases of the SRC are given in Table 42.
Table 42: Typical SRC use cases
SRCx_IN_AMODE
DATA path
SRCx_IN_SYNC
SRCx_IN_SYNC
(out)
SRCx_OUT_AMODE
DATA path
SRCx_OUT_SYNC
SRCx_OUT_SYNC
(out)
Use case
PCM_IN to USB
Automatic
PCMx_IN_DATA
PCMx_SYNC
-
Manual
SRCx_OUT_REG
up-to 192kHz
up-to 192kHz
PDM_IN to USB
SPDIF_IN to USB
USB to PCM_OUT
Automatic
PDMx_IN_DATA
PCMx_SYNC
-
Manual
SRCx_OUT_REG
Automatic
SPDIF_IN_DATA
SPDIF_IN_SYNC
-
Manual
SRCx_OUT_REG
48kHz (TYP)
(ISR adjusts FS)
Manual
up-to 192kHz
Automatic
up-to 192kHz
SRCx_IN_REG
SRCx_OUT_REG
PCMx_FSC (output)
PCM to PCM resampler (output must be a multiple of 8 kHz)
PCM1_IN to
PCM2_OUT
Automatic
PCM1_IN
PCM1_FSC (input)
Automatic
PCM2_OUT
PCM2_FSC (output)
-
-
PCM2_IN to
PCM1_OUT
Automatic
PCM2_IN
Automatic
PCM1_IN
PCM2_FSC (input)
PCM1_FSC (output)
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Bluetooth Low Energy 4.2 SoC
21 PDM interface
The Pulse Density Modulation (PDM) interface pro-
vides a serial connection for up-to 2 input devices (e.g
MEMS microphones) or output devices. The interfaces
have a common clock PDM_CLK and one input
PDM_DI which is capable of carrying two channels.
Figure 57 shows a typical connection of two micro-
phone sharing one data line.
P D M
P D M _C LK
V dd
C LK
L/R
D A TA
P D M _D I[0]
G N D
The PDM input data is a 1-bit data and is encoded so
that the left channel is clocked in on the falling edge of
PDM_CLK and the right channel is clocked on the ris-
ing edge of PDM_CLK as shown in Figure 58.
V dd
C LK
The 1 bits data stream is downsampled to 24 bits PCM
samples in the HW Sample Rate converter (SRC) for
further processing in the DSP.
L/R
D A T A
G N D
The interface supports MEMS microphone sleep mode
by disabling the PDM_CLK.
Figure 57: PDM with dual mic interface
The PDM interface signals are available through the
PPA multiplexer. The interface levels are determined
by the IO group on which the PDM signals are mapped
which can be hard wired to 1.8 V and 3.3 V.
Features
• PDM_CLK output frequency
62.5 kHz - 4 MHz
• Downsampling to 24 bits in SRC
• PDM_CLK on/off to support Sleep mode
• PDM_IN: 1 Channel in stereo format
• PDM_OUT: 2 Channels in mono format,
1 Channels in stereo format
• Programmable Left/Right channel selection
Figure 58: PDM formats
Figure 59: SRC PDM input transfer function
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Bluetooth Low Energy 4.2 SoC
• Master/slave 4 kHz to 96 kHz
22 PCM Controller
• Strobe Length 1, 8, 16, 24, 32, 40, 48 and 64 bits
The PCM controller is implementing an up-to 192kHz
synchronous interface to external audio devices, ISDN
circuits and serial data interfaces.
• PCM_FSC before or on the first bit. (In Master
mode)
It is accessed through the APB32 interface. PCM can
individually operate in master or slave mode. In slave
mode, the phase between the external and internal
frame sync can be measured and used to compensate
for drift.
• 2x32 channels
• Programmable slot delay up-to 31*8bits
• Formats
• PCM mode
The data IO registers have DMA support in order to
reduce the interrupt overhead to the CPU. Up-to 8
channels of 8 bits with a programmable delay are sup-
ported in received and transmit direction.
• I2S mode (Left/Right channel selection) with N*8
for Left and N*8 for Right
• IOM2 mode (double clock per bit)
• Programmable clock and frame sync inversion
• Direct connection to Sample Rate Converter (SRC)
• Interrupt line to the CPU
The controller supports PCM, I2S, TDM and IOM2 for-
mats.
Features
• PCM_CLK Master/slave
• PCM_FSC
• DMA support
2x32 bits
32 bit register
To AIC
PCM_DO
PCM_DI
64 bit register
2x32 bits
32 bit register
PCM_CLK
DSP_PHASE_INFO_REG
PCM_CLK (master)
PCM_IN_SYNC (master)
PCM_FSC
PCM__OUT_SYNC (master)
Figure 60: PCM Controller
22.1 ARCHITECTURE
22.1.1 Interface Signals
22.1.2 Channel ACCESS
The PCM interface has two 32-bit channels for TX and
RX. Channels are accessed through 32 bits registers:
PCM1/2_OUT1_REG, PCM1/2_OUT2_REG,
• PCM_FSC, strobe signal input, output. Supports 8/
16/32/48/96/128/192kHz. Can generate an interrupt
to the CPU.
PCM1/2_IN1_REG and PCM1/2_IN2_REG.
The registers are only word-wise (32 bits) accessible
by the CPU or the DMA via the APB-32 bridge. The 32
bits registers are arranged as 8 channels of 8 bits,
named channel 1 to channel8.
• PCM_CLK, PCM clock input, output.
• PCM_DO, PCM Data output, push pull or open drain
with external pull-up resistor.
By a flexible clock inversion, channel delay and strobe
length adjustment various format like PCM, I2S, TDM
and IOM2 can be made.
• PCM_DI, PCM Data input.
PCM interface can be powered down by the
PCM_CTRL_REG[PCM_EN] = 0.
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use cases, with 16 bits, 32 bits, 48 bits, and 64 bits.
Bluetooth Low Energy 4.2 SoC
22.1.3 Channel delay
The 8 PCM channels can be delayed with a maximum
The PCM_FSC will be synchronised to the main coun-
ter if PCM_MAIN_SYNC is ‘1’.
delay
of
31x8bits
using
the
bit
field
PCMx_CTRL_REG[PCM_CH_DEL]. Note that a high
delay count in combination with a slow clock, can lead
to the PCMx_FSC sync occurring before all channels
are shifted in or out. The received bits of the current
channel may not be properly aligned in that case.
DIV1_CLK
PCM_DIV_REG
PCM_FSC_DIV
PCM_CLK
PCM_FSC
DIVN_CLK
22.1.4 Clock generation
PCM_SRC_SEL
Figure 61 shows the PCM clock generation block and
Figure 62 the PCM_CLK_DIV value for given
PCM_FSC and PCM_CLK in master mode.
PCM_CLK_DIV is only 10 bits. For a higher division
value, use either DIV1 or DIVN.
Figure 61: PCM clock generation
The PCM_CLK_DIV calculation shows the following
XTAL
16000
PLL
96000
desired
sample
rate
bitclock
khz
desired
divider
actual
divider
actual
wordsize
desired
divider
actual
divider
actual
wordsize
bits
8 1*8
64
128
192 83.33333
250
125
250
125
80
50
125
50
40
25
125
50
40
25
50
25
20
10
50
25
20
10
25
10
10
5
8
1500
750
500
375
750
375
250
187.5
750
375
250
187.5
375
187.5
125
93.75
375
187.5
125
93.75
187.5
93.75
62.5
1500
8
8 1*16
8 1*24
8 1*32
8 2*8
8 2*16
8 2*24
8 2*32
16
25
40
8
20
25
40
8
20
25
40
10
20
25
50
10
20
25
50
10
25
25
50
750
500
375
750
375
250
150
750
375
250
150
375
150
125
75
375
150
125
75
150
75
50
25
250
125
80
16
24
32
8
16
24
40
8
16
24
40
8
20
24
40
8
20
24
40
10
20
30
60
8
16
25
40
8
256
128
256
62.5
125
62.5
384 41.66667
512
128
256
31.25
125
62.5
16 1*8
16 1*16
16 1*24
16 1*32
16 2*8
16 2*16
16 2*24
16 2*32
32 1*8
32 1*16
32 1*24
32 1*32
32 2*8
32 2*16
32 2*24
32 2*32
48 1*8
48 1*16
48 1*24
48 1*32
48 2*8
48 2*16
48 2*24
48 2*32
384 41.66667
512
256
512
31.25
62.5
31.25
768 20.83333
1024
256
512
15.625
62.5
31.25
768 20.83333
1024
512
15.625
31.25
1024
15.625
1536 10.41667
2048 7.8125
46.875
250
125
83.33333
62.5
125
62.5
41.66667
31.25
384 41.66667 N/A
768 20.83333 N/A
1152 13.88889 N/A
1536 10.41667 N/A
768 20.83333 N/A
1536 10.41667 N/A
2304 6.944444 N/A
3072 5.208333 N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
N/A
50
125
50
40
25
20
25
40
Figure 62: Integer PCM_CLK_DIV values for given PLL_MAIN frequencies and sample rates
Note that in the yellow colored cases, PCM_FSC can-
not be 50% duty cycle while using the integer option for
generating the PCM_CLK. However, this is feasible if
the fractional option is used (see PCM_DIV_REG in
Table 580 and PCM_FDIV_REG in Table 581).
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PCM_CTRL_REG[PCM_CLKINV].
The PCM_CLK frequency selection is described in sec-
tion 22.1.4.
22.1.5 DATA FORMATS
22.1.5.1 PCM master mode
22.1.5.2 PCM Slave mode
Master mode is selected if PCM_CTRL_REG[MAS-
TER] = 1.
In slave mode (bit MASTER = 0) PCM_FSC is input
and determines the starting point of channel 0. The
repetition rate of PCM_FSC must be equal to
PCM_SYNC and must be high for at least one
PCM_CLK cycle. Within one frame, PCM_FSC must
be low for at least PCM_CLK cycle.
In master mode PCM_FSC is output and falls always
over Channel 0. The duration of PCM_FSC is program-
mable with PCMx_CTRL_REG[PCM_FSCLEN]= 1 or
8,16, 24, 32 clock pulses high. The start position is pro-
grammable with PCM_CTRL_REG[PCM_FSCDEL]
and can be placed before or on the first bit of channel
0. The repetition frequency of PCM_FSC is program-
mable in PCMx_CTRL_REG[PCM_FSC_DIV] to from
8-192kHz.
Bit PCM_FSCDEL sets the start position of PCM_FSC
before or on the first bit (MSB).
In slave mode PCM_CLK is input. The minimum
received frequency is 256 kHz, the maximum is
12.288 MHz.
If master mode selected, PCM_CLK is output and pro-
vides one or two clocks per data bit programmable in
PCM_CTRL_REG[PCM_CLK_BIT].
In slave mode the main counter can be stopped and
resumed on a PCM1_FSC or PCM2_FSC rising edge.
T
The polarity of the signal can be inverted with bit
PCM_ CLK_INV= 0
PCM_C LK
PCM_ CLK_INV= 1
PCM _C LK
Ch anne l 3
cha nnel 6
Ch anne l 5 Ch ann el 8
Cha nne l 2
Cha nne l 1
Ch anne l 4
D 0
Ch anne l 7
PCM_DI/PCM_DO
D3 1
D3 1
D0
Ch anne l 3
cha nnel 6
Ch anne l 2
Ch anne l 5
Ch ann el 8
Cha nne l 1
Ch anne l 4
Ch ann el 7
D0
PCM_CH 0_DEL =1
D3 1
PCM_DI/PCM_DO
D0 D 31
PCM _ M AST ER= 0 (sl ave)
PCM_ FSC (in put)
PCM_ FSC (in put)
PCM_ FSCD EL=0
PCM_ FSCD EL=1
PC M_ M ASTER= 1 (maste r)
PCM_F SC
PCM_F SC
PCM _F SC
PCM_F SC
PCM_F SC
PCM_F SC
PCM_ FSCL EN = 0, PC M_ FSC DEL=0
PCM_F SCLEN= 1, PCM_ FSCD EL=0
PC M_FSC LEN= 8, PCM _F SCDEL =0
PCM_F SCLEN = 0, PC M _F SC DEL= 1
PC M_FSC LEN = 1, PC M_ FSCD EL=1
PC M_FSC LEN = 8, PC M_ FSCD EL=1
PCM49 5-01
Figure 63: PCM interface formats
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22.1.5.3 I2S formats
• PCM_CLK_INV:
• PCM_CH0_DEL:
1 (output on falling edge)
0 (no channel delay)
The digital audio interface supports I2S mode, Left Jus-
tified mode, Right Justified mode and TDM mode.
I2S mode
TDM mode
To support I2S mode, the MSB of the right channel is
valid on the second rising edge of the bit clock after the
rising edge of the PCM_FSC, and the MSB of the left
channel is valid on the second rising edge of the bit
clock after the falling edge of the PCM_FSC.
A time is specified from the normal ‘start of frame’ con-
dition using register bits PCM_CH0_DEL. In the left-
justified TDM example illustrated in Figure 65, the left
channel data is valid PCM_CH0_DEL clock cycles after
the rising edge of the PCM_FSC, and the right channel
data is valid the same PCM_CH0_DEL number of
clock cycles after the falling edge of the PCM_FSC.
Settings for I2S mode:
• PCM_FSC_EDGE: 1 (all after PCM_FSC)
By delaying the channels, also left and right alignment
can be achieved.
• PCM_FSCLEN:
• PCM_FSC_DEL:
4 (4x8 High, 4x8 Low)
0 (one bit delayed)
PCM_CLK
PCM_FSC
PCM_DO
PCM_DI
Left channel data
Right channel data
N-1
N-1
N-2
N-2
1
1
0
0
N-1
N-1
N-2
N-2
1
1
0
0
Figure 64: I2S Mode
Settings for TDM mode:
• PCM_CLK_INV:
• PCM_CH0_DEL:
1 (output on falling edge)
Slave 0-31 (channel delay)
Master 1-3
• PCM_FSC_EDGE: 1 (rising and falling PCM_FSC)
• PCM_FSCLEN:
Master 1 to 4
Slave waiting for edge.
• PCM_FSC_DEL:
1 (no bit delay)
PCM_CLK
PCM_FSC
PCM_DO
PCM_DI
Left channel data
Right channel data
offset
offset
N-1
N-1
N-2
N-2
1
1
0
0
N-1
N-1
N-2
1
1
0
0
N-2
Figure 65: I2S TDM mode (left justified mode)
22.1.6 IOM mode
• PCM_FSC_DEL:
0 (no bit delay)
0 (output on rising edge)
0 (no delay)
• PCM_CLK_INV:
• PCM_CH0_DEL:
• PCM_CLK_BIT:
In the IOM format, the PCM_CLK frequency is twice
the data bit cell duration. In slave mode synchroniza-
tion is on the first rising edge of PCM_FSC while data
is clock in on the second falling edge.
1
Settings for IOM mode:
22.1.7 External synchronisation
• PCM_FSC_EDGE: 0 (rising edge PCM_FSC)
With the PCM interface in slave mode, the PCM inter-
face supports direct routing through the sample rate
convertor (SRC). Any drift in PCM_FSC or other frame
• PCM_FSCLEN:
0 (one cycle)
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sync frequencies like 44.1 kHz can be directly resam-
pled to e.g 48kHz internal sample rate.
PCM_CLK
PCM_FSC
0 if Push pull
PCM_DO
PCM_DI
MSB
LSB
Hi-Z if open drain
48x-IOM
Figure 66: IOM format
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• Shadow registers to reduce software overhead and
Bluetooth Low Energy 4.2 SoC
23 UART
The DA14681 contains two instances of this block, i.e.
UART and UART2.
also include a software programmable reset
• Transmitter Holding Register Empty (THRE) inter-
rupt mode
The UART is compliant to the industry-standard 16550
and is used for serial communication with a peripheral,
modem (data carrier equipment, DCE) or data set.
Data is written from a master (CPU) over the APB bus
to the UART and it is converted to serial form and
transmitted to the destination device. Serial data is also
received by the UART and stored for the master (CPU)
to read back.
• IrDA 1.0 SIR mode supporting low power mode.
• Functionality based on the 16550 industry standard:
• Programmable character properties, such as num-
ber of data bits per character (5-8), optional
• parity bit (with odd or even select) and number of
stop bits (1, 1.5 or 2)
There is DMA support on both UARTs. UART2 only
supports hardware flow control signals (RTS, CTS) and
includes a 16-byte FIFO while UART is not.
• Line break generation and detection
• Prioritized interrupt identification
• Programmable serial data baud rate as calculated
by the following: baud rate = (serial clock frequency)/
(divisor).
Features
• 16 bytes Transmit and receive FIFOs. (UART2 only)
• Hardware flow control support (CTS/RTS) (UART2
only)
UART
UART2
pclk
FIFO
Block
APB
APB Bus
Interface
uart_int
Register
Block
dtr_n
rts_n
cts_n
Modem
dsr_n
Sync
Sync
Block
dcd_n
Block
Timeout
Detector
ri_n
Baud
Clock
Generator
uart_clk
uart_rx
Serial Receiver
Serial Transmitter
uart_tx
Figure 67: UART Blockdiagram
23.1 UART (RS232) SERIAL PROTOCOL
and the selected device is asynchronous, additional
bits (start and stop) are added to the serial data to indi-
Because the serial communication between the UART
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cate the beginning and end. Utilizing these bits allows
two devices to be synchronized. This structure of serial
data accompanied by start and stop bits is referred to
as a character, as shown in Figure 68.
Figure 68: Serial Data Format
An additional parity bit may be added to the serial char-
acter. This bit appears after the last data bit and before
the stop bit(s) in the character structure to provide the
UART with the ability to perform simple error checking
on the received data.
ted for exactly the same time duration. This is referred
to as a Bit Period or Bit Time. One BitTime equals 16
baud clocks. To ensure stability on the line the receiver
samples the serial input data at approximately the mid
point of the Bit Time once the start bit has been
detected. As the exact number of baud clocks that
each bit was transmitted for is known, calculating the
mid point for sampling is not difficult, that is every 16
baud clocks after the mid point sample of the start bit.
Figure 69 shows the sampling points of the first couple
of bits in a serial character.
The UART Line Control Register (UART_LCR_REG) is
used to control the serial character characteristics. The
individual bits of the data word are sent after the start
bit, starting with the least-significant bit (LSB). These
are followed by the optional parity bit, followed by the
stop bit(s), which can be 1, 1.5 or 2.
All the bits in the transmission (with exception to the
half stop bit when 1.5 stop bits are used) are transmit-
Figure 69: Receiver Serial Data Sample Points
As part of the 16550 standard an optional baud clock
reference output signal (baudout_n) is supplied to pro-
vide timing information to receiving devices that require
it. The baud rate of the UART is controlled by the serial
clock (sclk or pclk in a single clock implementation) and
the Divisor Latch Register (DLH and DLL). The availa-
ble baud rates are presented in the following table:
Table 43: Baud rate generation
Baud Rate
9600
Divider
104.166
52.083
26.041
17.361
8.680
4.340
1.230
1
DLH/DLL Reg
UART_DLF Reg
Error %
0.01
0.04
0.07
0.07
0.07
0.64
1.53
0
104
52
26
17
8
3
1
19200
38400
1
57600
6
115200
230400
812500
1000000
11
5
4
1
4
1
0
23.2 IRDA 1.0 SIR PROTOCOL
The Infrared Data Association (IrDA) 1.0 Serial Infrared
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(MCR) bit 6. When the UART is not configured to sup-
port IrDA SIR mode, none of the logic is implemented
and the mode cannot be activated, reducing total gate
counts. When SIR mode is enabled and active, serial
data is transmitted and received on the sir_out_n and
sir_in ports, respectively.
Bluetooth Low Energy 4.2 SoC
(SIR) mode supports bi-directional data communica-
tions with remote devices using infrared radiation as
the transmission medium. IrDA 1.0 SIR mode specifies
a maximum baud rate of 115.2 kBaud.
Note 4: Attention. Information provided on IrDA SIR mode in this
section assumes that the reader is fully familiar with the IrDA
Serial Infrared Physical Layer Specifications. This specifica-
tion can be obtained from the following website:
http://www.irda.org
Transmitting a single infrared pulse signals a logic
zero, while a logic one is represented by not sending a
pulse. The width of each pulse is 3/16ths of a normal
serial bit time. Thus, each new character begins with
an infrared pulse for the start bit. However, received
data is inverted from transmitted data due to the infra-
red pulses energizing the photo transistor base of the
IrDA receiver, pulling its output low. This inverted tran-
sistor output is then fed to the UART sir_in port, which
then has correct UART polarity. Figure 70 shows the
timing diagram for the IrDA SIR data format in compar-
ison to the standard serial format.
The data format is similar to the standard serial (sout
and sin) data format. Each data character is sent seri-
ally, beginning with a start bit, followed by 8 data bits,
and ending with at least one stop bit. Thus, the number
of data bits that can be sent is fixed. No parity informa-
tion can be supplied and only one stop bit is used while
in this mode.
Trying to adjust the number of data bits sent or enable
parity with the Line Control Register (LCR) has no
effect. When the UART is configured to support IrDA
1.0 SIR it can be enabled with Mode Control Register
Figure 70: IrDA SIR Data Format
As detailed in the IrDA 1.0 SIR, the UART can be con-
figured to support a low-power reception mode. When
the UART is configured in this mode, the reception of
SIR pulses of 1.41 microseconds (minimum pulse
duration) is possible, as well as nominal 3/16 of a nor-
mal serial bit time. Using this low-power reception
mode requires programming the Low Power Divisor
Latch (LPDLL/LPDLH) registers. It should be noted
that for all sclk frequencies greater than or equal to
7.37MHz (and obey the requirements of the Low Power
Divisor Latch registers), pulses of 1.41uS are detecta-
ble. However there are several values of sclk that do
not allow the detection of such a narrow pulse and
these are as follows (Table 44):
Table 44: Low power Divisor Latch register values
Min Pulse
width for
detection
Low power Divisor
Latch register value
SCLK
5.33 MHz
3
1.584 s
When IrDA SIR mode is enabled, the UART operation
is similar to when the mode is disabled, with one
exception; data transfers can only occur in half-duplex
fashion when IrDA SIR mode is enabled. This is
because the IrDA SIR physical layer specifies a mini-
mum of 10ms delay between transmission and recep-
tion. This 10ms delay must be generated by software.
Table 44: Low power Divisor Latch register values
23.3 CLOCK SUPPORT
The UART has two system clocks (pclk and sclk). Hav-
ing the second asynchronous serial clock (sclk) imple-
mented accommodates accurate serial baud rate
settings, as well as APB bus interface requirements.
Min Pulse
width for
detection
Low power Divisor
Latch register value
SCLK
1.84 MHz
3.69 MHz
1
2
3.77 s
With the two clock design a synchronization module is
implemented for synchronization of all control and data
2.086 s
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The assertion of the UART interrupt (UART_INT)
Bluetooth Low Energy 4.2 SoC
across the two system clock boundaries.
occurs whenever one of the several prioritized interrupt
types are enabled and active. The following interrupt
types can be enabled with the IER register:
A serial clock faster than four-times the PCLK does not
leave enough time for a complete incoming character
to be received and pushed into the receiver FIFO.
However, in most cases, the PCLK signal is faster than
the serial clock and this should never be an issue.
• Receiver Error
• Receiver Data Available
• Character Timeout (in FIFO mode only)
The serial clock modules must have time to see new
register values and reset their respective state
machines. This total time is guaranteed to be no more
than eight clock cycles of the slower of the two system
clocks. Therefore, no data should be transmitted or
received before this maximum time expires, after initial
configuration.
• Transmitter Holding Register Empty at/below thresh-
old (in Programmable THRE interrupt mode)
When an interrupt occurs the master accesses the
UART_IIR_REG to determine the source of the inter-
rupt before dealing with it accordingly. These interrupt
types are described in more detail in Table 45.
23.4 INTERRUPTS
Table 45: UART Interrupt priorities
Interrupt Id
Bits [3-0]
Interrupt Set and Reset Functions
Interrupt Source
Priority
Level
Interrupt Type
Interrupt Reset Control
0001
0110
-
None
Highest
Receiver Line status
Overrun/parity/ framing errors or
break interrupt
Reading the line status reg-
ister
0100
1
Receiver Data Available Receiver data available (non-
Reading the receiver buffer
FIFO mode or FIFOs disabled) or register (non-FIFO mode or
RCVR FIFO trigger level reached FIFOs disabled) or the FIFO
(FIFO mode and FIFOs enabled) drops below the trigger level
(FIFO mode and FIFOs ena-
bled)
1100
0010
2
3
Character timeout indi- No characters in or out of the
Reading the receiver buffer
register
cation
RCVR FIFO during the last 4
character times and there is at
least 1 character in it during this
time.
Transmitter holding reg- Transmitter holding register
Reading the IIR register (if
source of interrupt); or, writ-
ing into THR (FIFOs or
THRE Mode not selected or
disabled) or XMIT FIFO
above threshold (FIFOs and
THRE Mode selected and
enabled).
ister empty
empty (Prog. THRE Mode disa-
bled) or XMIT FIFO at or below
threshold (Prog. THRE Mode
enabled).
0000
0111
4
Reserved
Reserved
Lowest
-
-
23.5 PROGRAMMABLE THRE INTERRUPT
The UART can be configured to have a Programmable
THRE Interrupt mode available to increase system per-
formance.
When Programmable THRE Interrupt mode is selected
it can be enabled via the Interrupt Enable Register
(IER[7]). When FIFOs and the THRE Mode are imple-
mented and enabled, THRE Interrupts are active at,
and below, a programmed transmitter FIFO empty
threshold level, as opposed to empty, as shown in the
flowchart in Figure 71.
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Figure 71: Flowchart of Interrupt Generation for Programmable THRE Interrupt Mode
This threshold level is programmed into FCR[5:4]. The
available empty thresholds are: empty, 2, ¼ and ½.
See UART_FCR_REG for threshold setting details.
Selection of the best threshold value depends on the
system's ability to begin a new transmission sequence
in a timely manner. However, one of these thresholds
should prove optimum in increasing system perfor-
mance by preventing the transmitter FIFO from running
empty.
occurs and there is data to transmit”, instead of waiting
until the FIFO is completely empty. Waiting until the
FIFO is empty causes a performance hit whenever the
system is too busy to respond immediately.
Even if everything else is selected and enabled, if the
FIFOs are disabled via FCR[0], the Programmable
THRE Interrupt mode is also disabled. When not
selected or disabled, THRE interrupts and LSR[5] func-
tion normally (both reflecting an empty THR or FIFO).
The flowchart of THRE interrupt generation when not in
programmable THRE interrupt mode is shown in Fig-
ure 72.
In addition to the interrupt change, Line Status Register
(LSR[5]) also switches function from indicating trans-
mitter FIFO empty, to FIFO full. This allows software to
fill the FIFO each transmit sequence by polling LSR[5]
before writing another character. The flow then
becomes, “fill transmitter FIFO whenever an interrupt
Figure 72: Flowchart of Interrupt generation when not in Programmable THRE Interrupt Mode
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23.6 SHADOW REGISTERS
The shadow registers shadow some of the existing
register bits that are regularly modified by software.
These can be used to reduce the software overhead
that is introduced by having to perform read-modify
writes.
• UART_SRBR_REG support a host burst mode
where the host increments it address but still
accesses the same Receive buffer register
• UART_STHR support a host burst mode where the
host increments it address but still accesses the
same transmit holding register.
• UART_SFE_REG accesses the FCR[0] register
without accessing the other UART_FCR_REG bits.
• UART_SRT_REG accesses the FCR[7-6] register
without accessing the other UART_FCR_REG bits.
• UART_STER_REG accesses the FCR[5-4] register
without accessing the other UART_FCR_REG bits.
23.7 DIRECT TEST MODE
The on-chip UARTS can be used for the Direct Test
Mode required for the final product PHY layer testing. It
can be done either over the HCI layer, which engages
a full CTS/RTS UART or using a 2-wire UART directly
as described in the Bluetooth Low Energy Specification
(Volume 6, Part F).
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• Clock speeds upto 48 MHz for the SPI controller.
Programmable output frequencies of SPI interface
clock divided by 2, 4, 8 and 14
Bluetooth Low Energy 4.2 SoC
24 SPI+ Interface
This interface supports a subset of the Serial Periph-
eral Interface SPITM. The serial interface can transmit
and receive 8, 16 or 32 bits in master/slave mode and
transmit 9 bits in master mode. The SPI + interface has
enhanced functionality with bidirectional 2x16-bit word
FIFOs. Two SPI+ controllers are instantiated in the sys-
tem i.e. SPI and SPI2.
• SPI mode 0, 1, 2, 3 support. (clock edge and phase)
• Programmable SPI_DO idle level
• Maskable Interrupt generation
• Bus load reduction by unidirectional writes-only and
reads-only modes.
SPI™ is a trademark of Motorola, Inc.
Features
• Built-in RX/TX FIFOs for continuous SPI bursts.
• DMA support
• Slave and Master mode
• 8-bit, 9-bit, 16-bit or 32-bit operation
SPI_INT
DMA_TX_REQ
DMA_RX_REQ
SPI_MINT
APB bus
TX-FIFO
Request &
Interrupt
Selection
tx_req
SPIx_TX_REG0
SPIx_TX_REG1
clear_tx_req
SPI_SMn
SPI_FORCE_DO
SPI_DO
SPI clock
SPI_ON
IO buffer
SPI_RST
SPI_9BIT_VAL
SPI_CLK
RX-FIFO
SPIx_RX_REG0
rx_req
SPI_PHA SPI_POL
clear_rx_req
SPIx_RX_REG1
SPI_EN_CTRL
APB bus
Port x
Px_MODE_REG[]
SPIx_DI
SPIx_CLK
SPI_EN
SPIx_DO
Figure 73: SPI block diagram
24.1 OPERATION WITHOUT FIFOS
to be transmitted on SPIx_DO. Simultaneously, data is
received on SPIx_DI and shifted into the IO buffer. The
transfer cycle finishes after the 8th/9th/16th/32nd clock
cycle and SPI_INT_BIT bit is set in the
SPIx_CTRL_REG and SPI_INT_PEND bit in
(RE)SET_INT_PENDING_REG is set. The received
bits in the IO buffer are copied to the
SPIx_RX_TX_REG0 (and SPIx_RX_TX_REG1 in case
of 32 bits mode) were they can be read by the CPU.
This mode is the default mode.
Master mode
To enable SPITM operation, first the individual port sig-
nal must be enabled. Next the SPI must be configured
in SPI_CTRL_REG, for the desired mode. Finally bit
SPI_ON must be set to 1.
A SPI transfer cycle starts after writing to the
SPIx_RX_TX_REG0. In case of 32 bits mode, the
SPIx_RX_TX_REG1 must be written first. Writing to
SPIx_RX_TX_REG0 also sets the SPI_TXH. As soon
as the holding register is copied to the IO buffer, the
SPI_TXH is reset and a serial transfer cycle of 8/9/16/
32 clock-cycles is started which causes 8/9/16/32 bits
Interrupts to the CPU can be disabled using the
SPI_MINT bit. To clear the SPI interrupt source, any
value to SPIx_CLEAR_INT_REG must be written. Note
however that SPI_INT will be set as long as the RX-
FIFO contains unread data.
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Slave mode
The slave mode is selected with SPI_SMn set to 1 and
the Px_MODE_REG must also select SPIx_CLK as
input. The functionality of the IO buffer in slave and
master mode is identical. The SPI module clocks data
in on SPIx_DI and out on SPIx_DO on every active
edge of SPIx_CLK. As shown in Figure 74, Figure 75,
Figure 76, and Figure 77, SPI1 has an active low clock
enable SPI1_EN which can be enabled with bit
SPI_EN_CTRL=1.
Reads only mode
In “reads only” mode (SPI_FIFO_MODE = “01“) only
the RX-FIFO is used. Transfers will start immediately
when the SPI is turned on in this mode. In transmit
direction the SPI_DO pin will transmit the IO buffer
contents being the actual value of the SPIx_TX_REGx
(all 0’s after reset). This means that no dummy writes
are needed for reads only transfers.
In slave mode transfers only take place if the external
master initiates them, but in master mode this means
that transfers will continue until the RX-FIFO is full. If
this happens SPIx_CTRL_REG1[SPI_BUSY] will
become ‘0’. If exactly N words need to be read from
SPI device, first read (N - fifosize+1) words. Then wait
In slave mode the internal SPI clock must be more than
four times the SPIx_CLK
In slave mode the SPI_EN serves as a clock enable
and bit synchronization If enabled with bit
SPI_EN_CTRL. As soon as SPI_EN is deactivated
between the MSB and LSB bits, the I/O buffer is reset.
until
the
SPI_BUSY
becomes
‘0’,
set
SPI_FIFO_MODE to “00” and finally read the remain-
ing (fifosize +1) words. Here fifosize is 4/2/1 words for
8/16/32 bits mode respectively.
SPI_POL and SPI_PHA
The phase and polarity of the serial clock can be
changed with bits SPI_POL and SPI_PHA in the
SPIx_CTRL_REG.
If this is not done, more data will be read from the SPI
device until the FIFO is completely filled, or the SPI is
turned off.
SPI_DO idle levels
The idle level of signal SPI_DO depends on the master
or slave mode and polarity and phase mode of the
clock.
For DMA operation only DMA0 must be configured.
Manual transfers are not needed, as the SPI will start
transferring immediately when turning on this mode.
In master mode pin SPIx_DO gets the value of bit
SPI_DO if the SPI is idle in all modes. Also if slave in
SPI modes 0 and 2, SPI_DO is the initial and final idle
level.
Bidirectional transfers with FIFO
If SPI_FIFO_MODE is “00“, both registers are used as
a FIFO. SPI_TXH indicates that TX-FIFO is full,
SPI_INT indicates that there is data in the RX-FIFO.
In SPI modes 1 and 3 however there is no clock edge
after the sampled lsb and pin SPIx_DO gets the lsb
value of the IO buffer. If required, the SPIx_DO can be
forced to the SPI_DO bit level by resetting the SPI to
the idle state by shortly setting bit SPI_RST to 1.
(Optionally SPI_FORCE_DO can be set, but this does
not reset the IO buffer). The following diagrams show
DMA operation is recommended using both DMA0 and
DMA1. No manual transfers are required because the
requests will trigger the DMA automatically.
24.2 9 BITS MODE
The 9 bits mode can be used to support 9 bits displays
and is be selected with SPIx_CTRL_REG[SPI_WORD]
set to ‘11’. The value of the 9th bit, set in the
SPIx_CTRL_REG1[SPI_9BIT_VAL] and is used to
determine if the next 8 bits form a command word or
data word. Because the 9th bit is not part of the data,
the FIFO’s are still used in the 8 bits mode. The 9th bit
is received but not saved because it is shifted out of the
8 bits shift register upon reception.
TM
the timing of the SPI interface.
Writes only mode
In “writes only” mode (SPI_FIFO_MODE = “10“) only
the TX-FIFO is used. Received data will be copied to
the SPIx_RX_TX_REGx, but if a new SPI transfer is
finished before the old data is read from the memory,
this register will be overwritten.
The 9 bits command should entered by writing to the
SPIx_RX_TX_REG0, while the larger amount of data
words can best be handled by the DMA controller
SPI_9BIT_VAL is set to “data mode”. To send a new
command word at the end, the DMA (and SPI) must be
stopped and the SPI_9BIT_VAL shall be set to “com-
mand mode” again.
SPI_INT acts as a tx_request signal, indicating that
there is still place in the FIFO. It will be ‘0’ when the
FIFO is full or else ‘1’ when it’s not full. This is also indi-
cated in the SPIx_CTRL_REG[SPI_TXH], which is ‘1’ if
the TX-FIFO is full. Writing to the FIFO if this bit is still
1, will result in transmission of undefined data. If all
data has been transferred, SPIx_CTRL_REG1
[SPI_BUSY] will become ‘0’.
For DMA operation only DMA1 must be configured.
Starting transfers by manually writing to the
SPIx_TX_REGx shall not be done because
DMA_tx_req is already ‘1’ when this mode is activated.
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SPI_CLK
SPI_DO (Master)
SPI_DO 1 (Slave)
SPI_DO 2 (Slave)
SPI_DI
SPI_DO
SPI_DO
MSB
LSB
LSB
LSB
LSB
SPI_DO
SPI_DO
SPI_DO
MSB
^ write to SPIx_RX_TX_REG0
MSB
^ write to SPIx_RX_TX_REG0
MSB
SPI_EN (Slave)
Figure 74: SPI Master/slave, mode 0: SPI_POL=0 and SPI_PHA=0
Note 5: If 9 bits SPI mode, the MSB bit in transmit direction is determined by bit SPIx_CTRL_REG[SPI_9BIT_VAL]. In receive direction, the MSB is
received but not stored.
SPI_CLK
SPI_DO (Master)
SPI_DO (Slave)
SPI_DI
SPI_DO
MSB
MSB
LSB
LSB
SPI_DO
SPI_DO
LSB
^ write to SPIx_RX_TX_REG0
MSB
SPI_EN (Slave)
Figure 75: SPI Master/Slave, mode 1: SPI_POL=0 and SPI_PHA=1
For the MSB bit refer to Note 5.
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SPI_CLK
SPI_DO (Master)
SPI_DO 1 (Slave)
SPI_DO 2 (Slave)
SPI_DI
SPI_DO
SPI_DO
MSB
LSB
LSB
LSB
LSB
SPI_DO
SPI_DO
SPI_DO
MSB
^ write to SPIx_RX_TX_REG0
MSB
^ write to SPIx_RX_TX_REG0
MSB
SPI_EN (Slave)
Figure 76: SPI Master/Slave, mode 2: SPI_POL=1 and SPI_PHA=0
For the MSB bit refer to Note 5.
SPI_CLK
SPI_DO (Master)
SPI_DO (Slave)
SPI_DI
SPI_DO
MSB
MSB
LSB
LSB
SPI_DO
SPI_DO
LSB
^ write to SPIx_RX_TX_REG0
MSB
SPI_EN (Slave)
Figure 77: SPI Master/slave, mode 3: SPI_POL=1 and SPI_PHA=1
For the MSB bit refer to Note 5.
24.3 TIMING
The timing of the SPI interface when SPI controller is in
slave mode is presented in Figure 78:
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Figure 78: SPI slave mode timing (CPOL=0, CPHA=0)
Note that Tint represents the internal SPI clock period
and is equal to 1.5*spi_clk period.
Table 46: SPI timing parameters
PARAMETER
DESCRIPTION
CONDITIONS
MIN
TYP
MAX
UNITS
tCLKPER
spi_clk clock period
VBAT=3V,
DCDC=On
0.25*spi_ 0.25*spi_ 0.25*spi_
MHz
clk
clk
clk
tCSST
CS active before spi_clk rising
edge
8.9+Tint
4.5+Tint
2.8+Tint
ns
tCSHOLD
CS stays active after falling
edge of spi_clk
0
0
0
ns
tMOST
Input data latching setup time
input data hold time
9.3
0
4.6
0
2.8
0
ns
ns
ns
tMOHOLD
tSODEL
Output data hold time
30
14.3
8.7
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• Clock synchronization
25 I2C
• 4 deep transmit/receive 9-bit wide FIFOs
• Master transmit, Master receive operation
• 7 or 10-bit addressing
The I2C is a programmable control bus that provides
support for the communications link between Inte-
grated Circuits in a system. It is a simple two-wire bus
with a software-defined protocol for system control,
which is used in temperature sensors and voltage level
translators to EEPROMs, general-purpose I/O, A/D
and D/A converters.
• 7 or 10-bit combined format transfers
• Bulk transmit mode
• Default slave address of 0x055
• Interrupt or polled-mode operation
Two I2C controllers are instantiated in the system,
namely I2C and I2C2.
Features
• Handles Bit and Byte waiting at both bus speeds
• Programmable SDA hold time
• DMA request signals
• Two-wire I2C serial interface consists of a serial data
line (SDA) and a serial clock (SCL)
• Standard and Fast mode support (up to 400 kb/s)
I2 C
Slave State
M ac h in e
A M BA B u s
Re giste r File
In te rfac e U n it
M aste r State
M ac h in e
C lo c k
G e n e rato r
R x Sh ift
Tx Sh ift
Rx Filte r
In te r ru p t
C o n tro lle r
To ggle
Syn c h ro n ize r
R X FIFO
TX FIFO
Figure 79: I2C Block diagram
The I2C controller block diagram is shown in Figure
79:. It contains the following sub blocks:
Tx Shift. Presents data supplied by CPU for transfer on
the I2C bus.
• AMBA Bus Interface Unit.
Interfacing the APB interface to access the register
file
Rx Filter. Detects the events in the bus; for example,
start, stop and arbitration lost.
Toggle. Generates pulses on both sides and toggles to
transfer signals across clock domains.
• Register File. Contains configuration registers and is
the interface with software.
Synchronizer. Transfers signals from one clock domain
to another.
• Master State Machine. Generates the I2C protocol
for the master transfers.
Interrupt Controller. Generates the raw interrupt and
interrupt flags, allowing them to be set and cleared.
• Clock Generator. Calculates the required timing to
do the following:
RX FIFO/TX. Holds the RX FIFO and TX FIFO register
banks and controllers, along with their status levels.
• Generate the SCL clock when configured as a
master
25.1 I2C BUS TERMS
• Check for bus idle
The following terms relate to how the role of the I2C
device and how it interacts with other I2C devices on
the bus.
• Generate a START and a STOP
• Setup the data and hold the data
• Transmitter. the device that sends data to the bus. A
transmitter can either be a device that initiates the
data transmission to the bus (a master-transmitter)
Rx Shift. Takes data into the design and extracts it in
byte format.
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• START (RESTART). data transfer begins with a
START or RESTART condition. The level of the SDA
data line changes from high to low, while the SCL
clock line remains high. When this occurs, the bus
becomes busy.
Bluetooth Low Energy 4.2 SoC
or responds to a request from the master to send
data to the bus (a slave-transmitter).
• Receiver. The device that receives data from the
bus. A receiver can either be a device that receives
data on its own request (a master-receiver) or in
response to a request from the master (a slave-
receiver).
• STOP. data transfer is terminated by a STOP condi-
tion. This occurs when the level on the SDA data line
passes from the low state to the high state, while the
SCL clock line remains high. When the data transfer
has been terminated, the bus is free or idle once
again. The bus stays busy if a RESTART is gener-
ated instead of a STOP condition.
• Master. The component that initializes a transfer
(START command), generates the clock (SCL) sig-
nal and terminates the transfer (STOP command). A
master can be either a transmitter or a receiver.
• Slave. The device addressed by the master. A slave
can be either receiver or transmitter.
Note 6: START and RESTART conditions are functionally identical.
25.2 I2C BEHAVIOUR
These concepts are illustrated in Figure 80:
The I2C can be only be controlled via software to be an
I2C master only, communicating with other I2C slaves;
The master is responsible for generating the clock and
controlling the transfer of data. The slave is responsible
for either transmitting or receiving data to/from the
master. The acknowledgement of data is sent by the
device that is receiving data, which can be either a
master or a slave. As mentioned previously, the I2C
protocol also allows multiple masters to reside on the
I2C bus and uses an arbitration procedure to deter-
mine bus ownership.
Each slave has a unique address that is determined by
the system designer. When a master wants to commu-
nicate with a slave, the master transmits a START/
RESTART condition that is then followed by the slave’s
address and a control bit (R/W) to determine if the
master wants to transmit data or receive data from the
slave. The slave then sends an acknowledge (ACK)
pulse after the address.
Figure 80: Master/Slave and Transmitter/Receiver
Relationships
• Multi-master. The ability for more than one master to
co-exist on the bus at the same time without collision
or data loss.
• Arbitration. The predefined procedure that author-
izes only one master at a time to take control of the
bus. For more information about this behaviour, refer
to Multiple Master Arbitration chapter
If the master (master-transmitter) is writing to the slave
(slave-receiver), the receiver gets one byte of data.
This transaction continues until the master terminates
the transmission with a STOP condition. If the master
is reading from a slave (master-receiver), the slave
transmits (slave-transmitter) a byte of data to the mas-
ter, and the master then acknowledges the transaction
with the ACK pulse. This transaction continues until the
master terminates the transmission by not acknowl-
edging (NACK) the transaction after the last byte is
received, and then the master issues a STOP condition
or addresses another slave after issuing a RESTART
condition. This behaviour is illustrated in Figure 81:.
• Synchronization. The predefined procedure that syn-
chronizes the clock signals provided by two or more
masters. For more information about this feature,
refer to Clock Synchronization chapter
• SDA. Data signal line (Serial DAta)
• SCL. Clock signal line (Serial CLock)
25.1.1 Bus Transfer Terms
The following terms are specific to data transfers that
occur to/from the I2C bus.
Figure 81: Data transfer on the I2C Bus
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transfers,
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The I2C is a synchronous serial interface. The SDA
line is a bidirectional signal and changes only while the
SCL line is low, except for STOP, START, and
RESTART conditions. The output drivers are open-
drain or open-collector to perform wire-AND functions
on the bus. The maximum number of devices on the
bus is limited by only the maximum capacitance speci-
fication of 400 pF. Data is transmitted in byte packages.
To
initiate
combined
format
I2C_CON.I2C_RESTART_EN should be set to 1. With
this value set and operating as a master, when the I2C
controller completes an I2C transfer, it checks the
transmit FIFO and executes the next transfer. If the
direction of this transfer differs from the previous trans-
fer, the combined format is used to issue the transfer. If
the transmit FIFO is empty when the current I2C trans-
fer completes, a STOP is issued and the next transfer
is issued following a START condition.
25.2.1 START and STOP Generation
When operating as an I2C master, putting data into the
transmit FIFO causes the I2C controller to generate a
START condition on the I2C bus. Allowing the transmit
FIFO to empty causes the I2C controller to generate a
STOP condition on the I2C bus.
25.3 I2C PROTOCOLS
The I2C controller has the following protocols:
• START and STOP Conditions
• Addressing Slave Protocol
When operating as a slave, the I2C controller does not
generate START and STOP conditions, as per the pro-
tocol. However, if a read request is made to the I2C
controller, it holds the SCL line low until read data has
been supplied to it. This stalls the I2C bus until read
data is provided to the slave I2C controller, or the I2C
• Transmitting and Receiving Protocol
• START BYTE Transfer Protocol
25.3.1 START and STOP Conditions
When the bus is idle, both the SCL and SDA signals
are pulled high through external pull-up resistors on the
bus. When the master wants to start a transmission on
the bus, the master issues a START condition. This is
defined to be a high-to-low transition of the SDA signal
while SCL is 1. When the master wants to terminate
the transmission, the master issues a STOP condition.
This is defined to be a low-to-high transition of the SDA
line while SCL is 1. Figure 82: shows the timing of the
START and STOP conditions. When data is being
transmitted on the bus, the SDA line must be stable
when SCL is 1.
controller slave is disabled by writing
I2C_ENABLE.
a 0 to
25.2.2 Combined Formats
The I2C controller supports mixed read and write com-
bined format transactions in both 7-bit and 10-bit
addressing modes.
The I2C controller does not support mixed address and
mixed address format.that is, a 7-bit address transac-
tion followed by a 10-bit address transaction or vice
versa.combined format transactions.
Figure 82: START and STOP Conditions
Note 7: The signal transitions for the START/STOP conditions, as depicted in Figure 81:, reflect those observed at the output signals of the Master
driving the I2C bus. Care should be taken when observing the SDA/SCL signals at the input signals of the Slave(s), because unequal line
delays may result in an incorrect SDA/SCL timing relationship.
25.3.2 Addressing Slave Protocol
from the slave.
There are two address formats: the 7-bit address for-
mat and the 10-bit address format.
7-bit Address Format
During the 7-bit address format, the first seven bits
(bits 7:1) of the first byte set the slave address and the
LSB bit (bit 0) is the R/W bit as shown in Figure 83:.
When bit 0 (R/W) is set to 0, the master writes to the
slave. When bit 0 (R/W) is set to 1, the master reads
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Figure 83: 7-bit Address Format
slaves address bits 9:8, and the LSB bit (bit 0) is the R/
10-bit Address Format
W bit. The second byte transferred sets bits 7:0 of the
slave address. Figure 84: shows the 10-bit address for-
mat, and Table 47 defines the special purpose and
reserved first byte addresses.
During 10-bit addressing, two bytes are transferred to
set the 10-bit address. The transfer of the first byte
contains the following bit definition. The first five bits
(bits 7:3) notify the slaves that this is a 10-bit transfer
followed by the next two bits (bits 2:1), which set the
Figure 84: 10-bit Address Format
Table 47: I2C Definition of Bits in First Byte
Slave address
R/W Bits
Description
0000 000
0
General Call Address. I2C controller places the data in the receive buffer and
issues a
General Call interrupt.
0000 000
0000 001
0000 010
0000 011
0000 1XX
1
START byte. For more details, refer to “START BYTE Transfer Protocol” 0000
X
X
X
X
CBUS address. I2C controller ignores these accesses
Reserved
Reserved
High-speed master code (for more information, refer to “Multiple Master Arbitra-
tion”
1111 1XX
1111 0XX
X
X
Reserved
10-bit slave addressing
I2C controller does not restrict you from using these
reserved addresses. However, if you use these
reserved addresses, you may run into incompatibilities
with other I2C components.
from the master to either transmit data or receive data
to/from the bus, acting as either a slave-transmitter or
slave-receiver, respectively.
Master-Transmitter and Slave-Receiver
25.3.3 Transmitting and Receiving Protocol
All data is transmitted in byte format, with no limit on
the number of bytes transferred per data transfer. After
the master sends the address and R/W bit or the mas-
ter transmits a byte of data to the slave, the slave-
receiver must respond with the acknowledge signal
The master can initiate data transmission and recep-
tion to/from the bus, acting as either a master-transmit-
ter or master-receiver. A slave responds to requests
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If the master-transmitter is transmitting data as shown
in Figure 85:, then the slave-receiver responds to the
master-transmitter with an acknowledge pulse after
every byte of data is received.
Bluetooth Low Energy 4.2 SoC
(ACK). When a slave-receiver does not respond with
an ACK pulse, the master aborts the transfer by issuing
a STOP condition. The slave must leave the SDA line
high so that the master can abort the transfer.
Figure 85: Master-Transmitter Protocol
Master-Receiver and Slave-Transmitter
When a master does not want to relinquish the bus
with a STOP condition, the master can issue a
RESTART condition. This is identical to a START con-
dition except it occurs after the ACK pulse. The master
can then communicate with the same slave or a differ-
ent slave.
If the master is receiving data as shown in Figure 86:
then the master responds to the slave-transmitter with
an acknowledge pulse after a byte of data has been
received, except for the last byte. This is the way the
master-receiver notifies the slave-transmitter that this
is the last byte. The slave-transmitter relinquishes the
SDA line after detecting the No Acknowledge (NACK)
so that the master can issue a STOP condition.
Figure 86: Master-Receiver Protocol
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device requires it. This protocol consists of seven zeros
Bluetooth Low Energy 4.2 SoC
START BYTE Transfer Protocol
being transmitted followed by a 1, as illustrated in Fig-
ure 87:. This allows the processor that is polling the
bus to under-sample the address phase until 0 is
detected. Once the microcontroller detects a 0, it
switches from the under sampling rate to the correct
rate of the master.
The START BYTE transfer protocol is set up for sys-
tems that do not have an on-board dedicated I2C hard-
ware module. When the I2C controller is addressed as
a slave, it always samples the I2C bus at the highest
speed supported so that it never requires a START
BYTE transfer. However, when I2C controller is a mas-
ter, it supports the generation of START BYTE trans-
fers at the beginning of every transfer in case a slave
Figure 87: START BYTE Transfer
The START BYTE procedure is as follows:
1. Master generates a START condition.
2. Master transmits the START byte (0000 0001).
defined by the system designer and is set by writing to
the High Speed Master Mode Code Address Register,
I2C_HS_MADDR. Because the codes are unique, only
one master can win arbitration, which occurs by the
end of the transmission of the high-speed master code.
3. Master transmits the ACK clock pulse. (Present
only to conform with the byte handling format
used on the bus)
Control of the bus is determined by address or master
code and data sent by competing masters, so there is
no central master nor any order of priority on the bus.
4. No slave sets the ACK signal to 0.
Arbitration is not allowed between the following condi-
tions:
5. Master generates a RESTART (R) condition.
A hardware receiver does not respond to the START
BYTE because it is a reserved address and resets after
the RESTART condition is generated.
• A RESTART condition and a data bit
• A STOP condition and a data bit
• A RESTART condition and a STOP condition
Slaves are not involved in the arbitration process.
25.4 MULTIPLE MASTER ARBITRATION
The I2C controller bus protocol allows multiple masters
to reside on the same bus. If there are two masters on
the same I2C-bus, there is an arbitration procedure if
both try to take control of the bus at the same time by
generating a START condition at the same time. Once
a master (for example, a microcontroller) has control of
the bus, no other master can take control until the first
master sends a STOP condition and places the bus in
an idle state.
Arbitration takes place on the SDA line, while the SCL
line is 1. The master, which transmits a 1 while the
other master transmits 0, loses arbitration and turns off
its data output stage. The master that lost arbitration
can continue to generate clocks until the end of the
byte transfer. If both masters are addressing the same
slave device, the arbitration could go into the data
phase. Figure 88: illustrates the timing of when two
masters are arbitrating on the bus.
For high-speed mode, the arbitration cannot go into the
data phase because each master is programmed with
a unique high-speed master code. This 8-bitcode is
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Figure 88: Multiple Master Arbitration
goes into a HIGH wait state until the SCL clock line
25.5 CLOCK SYNCHRONIZATION
transitions to 1.
When two or more masters try to transfer information
on the bus at the same time, they must arbitrate and
synchronize the SCL clock. All masters generate their
own clock to transfer messages. Data is valid only dur-
ing the high period of SCL clock. Clock synchronization
is performed using the wired-AND connection to the
SCL signal. When the master transitions the SCL clock
to 0, the master starts counting the low time of the SCL
clock and transitions the SCL clock signal to 1 at the
beginning of the next clock period. However, if another
master is holding the SCL line to 0, then the master
All masters then count off their high time, and the mas-
ter with the shortest high time transitions the SCL line
to 0. The masters then counts out their low time and
the one with the longest low time forces the other mas-
ter into a HIGH wait state. Therefore, a synchronized
SCL clock is generated, which is illustrated in Figure
89:. Optionally, slaves may hold the SCL line low to
slow down the timing on the I2C bus.
Figure 89: Multiple Master Clock synchronization.
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1. The other I2C master device initiates an I2C transfer
Bluetooth Low Energy 4.2 SoC
25.6 OPERATION MODES
with an address that matches the slave address in the
I2C_SAR register of the I2C controller.
This section provides information on the following top-
ics:
2. The I2C controller acknowledges the sent address
and recognizes the direction of the transfer to indicate
that it is acting as a slave-transmitter.
• Slave Mode Operation
• Master Mode Operation
• Disabling I2C controller
3. The I2C controller asserts the RD_REQ interrupt (bit
5 of the I2C_RAW_INTR_STAT register) and holds the
SCL line low. It is in a wait state until software
responds. If the RD_REQ interrupt has been masked,
due to I2C_INTR_MASK[5] register (M_RD_REQ bit
field) being set to 0, then it is recommended that a
hardware and/or software timing routine be used to
instruct the CPU to perform periodic reads of the
I2C_RAW_INTR_STAT register.
Note 8: It is important to note that the I2C controller should only be
set to operate as an I2C Master, or I2C Slave, but not both
simultaneously. This is achieved by ensuring that bit 6
(I2C_SLAVE_DISABLE) and 0 (I2C_MASTER_MODE) of
the I2C_CON register are never set to 0 and 1, respectively.
25.6.1 Slave Mode Operation
This section includes the following procedures:
• Initial Configuration
a. Reads that indicate I2C_RAW_INTR_STAT[5]
(R_RD_REQ bit field) being set to 1 must be treated
as the equivalent of the RD_REQ interrupt being
asserted.
• Slave-Transmitter Operation for a Single Byte
• Slave-Receiver Operation for a Single Byte
• Slave-Transfer Operation For Bulk Transfers
b. Software must then act to satisfy the I2C transfer.
c. The timing interval used should be in the order of
10 times the fastest SCL clock period the I2C con-
troller can handle. For example, for 400 kb/s, the
timing interval is 25us.
Initial Configuration
To use the I2C controller as a slave, perform the follow-
ing steps:
Note 11: The value of 10 is recommended here because this is
approximately the amount of time required for a single byte
of data transferred on the I2C bus.
1. Disable the I2C controller by writing a ‘0’ to bit 0 of
the I2C_ENABLE register.
2. Write to the I2C_SAR register (bits 9:0) to set the
slave address. This is the address to which the I2C
controller responds.
4. If there is any data remaining in the TX FIFO before
receiving the read request, then the I2C controller
asserts
a
TX_ABRT interrupt (bit
6
of the
I2C_RAW_INTR_STAT register) to flush the old data
from the TX FIFO.
3. Write to the I2C_CON register to specify which type
of addressing is supported (7- or 10-bit by setting bit 3).
Enable the I2C controller in slave-only mode by writing
a ‘0’ into bit 6 (I2C_SLAVE_DISABLE) and a ‘0’ to bit 0
(MASTER_MODE).
Note 12: Because the I2C controller’s TX FIFO is forced into a
flushed/reset state whenever a TX_ABRT event occurs, it is
necessary for software to release the I2C controller from
this state by reading the I2C_CLR_TX_ABRT register before
attempting to write into the TX FIFO. See register
I2C_RAW_INTR_STAT for more details.
Note 9: Slaves and masters do not have to be programmed with the
same type of addressing 7- or 10-bit address. For instance, a
slave can be programmed with 7-bit addressing and a mas-
ter with 10-bit addressing, and vice versa.
If the TX_ABRT interrupt has been masked, due to of
I2C_INTR_MASK[6] register (M_TX_ABRT bit field)
being set to 0, then it is recommended that re-using the
timing routine (described in the previous step), or a
4. Enable the I2C controller by writing a ‘1’ in bit 0 of
the I2C_ENABLE register.
Note 10: Depending on the reset values chosen, steps 2 and 3 may
not be necessary because the reset values can be config-
ured. For instance, if the device is only going to be a master,
there would be no need to set the slave address because
you can configure I2C controller to have the slave disabled
after reset and to enable the master after reset. The values
stored are static and do not need to be reprogrammed if the
similar
one,
be
used
to
read
the
I2C_RAW_INTR_STAT register.
a. Reads that indicate bit 6 (R_TX_ABRT) being set
to 1 must be treated as the equivalent of the
TX_ABRT interrupt being asserted.
b. There is no further action required from software.
I2C controller is disabled.
c. The timing interval used should be similar to that
described in the previous step for the
I2C_RAW_INTR_STAT[5] register.
Slave-Transmitter Operation for a Single Byte
When another I2C master device on the bus addresses
the I2C controller and requests data, the I2C controller
acts as a slave-transmitter and the following steps
occur:
5. Software writes to the I2C_DATA_CMD register with
the data to be written (by writing a ‘0’ in bit 8).
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6. Software must clear the RD_REQ and TX_ABRT
Slave-Transfer Operation For Bulk Transfers
interrupts (bits
I2C_RAW_INTR_STAT register before proceeding.
5
and 6, respectively) of the
In the standard I2C protocol, all transactions are single
byte transactions and the programmer responds to a
remote master read request by writing one byte into the
slave’s TX FIFO. When a slave (slave-transmitter) is
issued with a read request (RD_REQ) from the remote
master (master-receiver), at a minimum there should
be at least one entry placed into the slave-transmitter’s
TX FIFO.
If the RD_REQ and/or TX_ABRT interrupts have been
masked, then clearing of the I2C_RAW_INTR_STAT
register will have already been performed when either
the R_RD_REQ or R_TX_ABRT bit has been read as
1.
7. The I2C controller releases the SCL and transmits
the byte.
I2C controller is designed to handle more data in the
TX FIFO so that subsequent read requests can take
that data without raising an interrupt to get more data.
Ultimately, this eliminates the possibility of significant
latencies being incurred between raising the interrupt
for data each time had there been a restriction of hav-
ing only one entry placed in the TX FIFO.
8. The master may hold the I2C bus by issuing a
RESTART condition or release the bus by issuing a
STOP condition.
Slave-Receiver Operation for a Single Byte
When another I2C master device on the bus addresses
the I2C controller and is sending data, the I2C control-
ler acts as a slave-receiver and the following steps
occur:
This mode only occurs when I2C controller is acting as
a slave-transmitter. If the remote master acknowledges
the data sent by the slave-transmitter and there is no
data in the slave’s TX FIFO, the I2C controller holds
the I2C SCL line low while it raises the read request
interrupt (RD_REQ) and waits for data to be written
into the TX FIFO before it can be sent to the remote
master.
1. The other I2C master device initiates an I2C transfer
with an address that matches the I2C controller’s slave
address in the I2C_SAR register.
2. The I2C controller acknowledges the sent address
and recognizes the direction of the transfer to indicate
that the I2C controller is acting as a slave-receiver.
If the RD_REQ interrupt is masked, due to bit 5
(M_RD_REQ) of the I2C_INTR_STAT register being
set to 0, then it is recommended that a timing routine
be used to activate periodic reads of the
3. I2C controller receives the transmitted byte and
places it in the receive buffer.
I2C_RAW_INTR_STAT
register.
Reads
of
Note 13: If the RX FIFO is completely filled with data when a byte is
I2C_RAW_INTR_STAT that return bit 5 (R_RD_REQ)
set to 1 must be treated as the equivalent of the
RD_REQ interrupt referred to in this section. This tim-
ing routine is similar to that described in “Slave-Trans-
mitter Operation for a Single Byte”
pushed, then an overflow occurs and the I2C controller
continues with subsequent I2C transfers. Because a NACK
is not generated, software must recognize the overflow when
indicated by the I2C controller (by the R_RX_OVER bit in
the I2C_INTR_STAT register) and take appropriate actions
to recover from lost data. Hence, there is a real time con-
straint on software to service the RX FIFO before the latter
overflow as there is no way to re-apply pressure to the
remote transmitting master. You must select a deep enough
RX FIFO depth to satisfy the interrupt service interval of their
system.
The RD_REQ interrupt is raised upon a read request,
and like interrupts, must be cleared when exiting the
interrupt service handling routine (ISR). The ISR allows
you to either write 1 byte or more than 1 byte into the
TX FIFO. During the transmission of these bytes to the
master, if the master acknowledges the last byte. then
the slave must raise the RD_REQ again because the
master is requesting for more data.
4. I2C controller asserts the RX_FULL interrupt
(I2C_RAW_INTR_STAT[2] register).
If the programmer knows in advance that the remote
master is requesting a packet of n bytes, then when
another master addresses I2C controller and requests
data, the TX FIFO could be written with n number bytes
and the remote master receives it as a continuous
stream of data. For example, the I2C controller slave
continues to send data to the remote master as long as
the remote master is acknowledging the data sent and
there is data available in the TX FIFO. There is no
need to hold the SCL line low or to issue RD_REQ
again.
If the RX_FULL interrupt has been masked, due to set-
ting I2C_INTR_MASK[2] register to 0 or setting
I2C_TX_TL to a value larger than 0, then it is recom-
mended that a timing routine (described in “Slave-
Transmitter Operation for a Single Byte”) be imple-
mented for periodic reads of the “I2C_STATUS” on
page 138 register. Reads of the I2C_STATUS register,
with bit 3 (RFNE) set at 1, must then be treated by soft-
ware as the equivalent of the RX_FULL interrupt being
asserted.
If the remote master is to receive n bytes from the I2C
controller but the programmer wrote a number of bytes
larger than n to the TX FIFO, then when the slave fin-
ishes sending the requested n bytes, it clears the TX
FIFO and ignores any excess bytes.
5. Software may read the byte from the
I2C_DATA_CMD register (bits 7:0).
6. The other master device may hold the I2C bus by
issuing a RESTART condition or release the bus by
issuing a STOP condition.
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Note 15: Depending on the reset values chosen, steps 2, 3, 4, and 5
The the I2C controller generates a transmit abort
(TX_ABRT) event to indicate the clearing of the TX
FIFO in this example. At the time an ACK/NACK is
expected, if a NACK is received, then the remote mas-
ter has all the data it wants. At this time, a flag is raised
within the slave’s state machine to clear the leftover
data in the TX FIFO. This flag is transferred to the pro-
cessor bus clock domain where the FIFO exists and
the contents of the TX FIFO is cleared at that time.
may not be necessary because the reset values can be con-
figured. The values stored are static and do not need to be
reprogrammed if the I2C controller is disabled, with the
exception of the transfer direction and data.
Master Transmit and Master Receive
The I2C Controller supports switching back and forth
between reading and writing dynamically. To transmit
data, write the data to be written to the lower byte of the
I2C_DATA_CMD_REG register. The CMD bit [8]
should be written to 0 for I2C write operations.
25.6.2 Master Mode Operation
This section includes the following topics:
• Initial Configuration
Subsequently, a read command may be issued by writ-
ing "don't cares" to the lower byte of the
I2C_DATA_CMD_REG register, and a 1 should be writ-
ten to the CMD bit.
• Dynamic I2C_TAR or I2C_10BITADDR_MASTER
Update
• Master Transmit and Master Receive
The I2C Controller master continues to initiate trans-
fers as long as there are commands present in the
transmit FIFO. If the transmit FIFO becomes empty, the
master inserts a STOP condition after completing the
current transfer.
Initial Configuration
The procedures are very similar and are only different
with regard to where the I2C_10BITADDR_MASTER
bit is set (either bit 4 of I2C_CON register or bit 12 of
I2C_TAR register).
Disabling I2C controller
To use the I2C controller as a master perform the fol-
lowing steps:
The register I2C_ENABLE_STATUS is added to allow
software to unambiguously determine when the hard-
ware has completely shutdown in response to the
I2C_ENABLE register being set from 1 to 0. Only one
register is required to be monitored.
1. Disable the I2C controller by writing 0 to the
I2C_ENABLE register.
2. Write to the I2C_CON register to set the maximum
speed mode supported (bits 2:1) and the desired
speed of the I2C controller master-initiated transfers,
either 7-bit or 10-bit addressing (bit 4).
Procedure:
1. Define a timer interval (ti2c_poll) equal to the 10
times the signalling period for the highest I2C transfer
speed used in the system and supported by I2C con-
troller. For example, if the highest I2C transfer mode is
400 kb/s, then this ti2c_poll is 25us.
Ensure that bit 6 I2C_SLAVE_DISABLE = 1 and bit 0
MASTER_MODE =1
Note 14: Slaves and masters do not have to be programmed with the
same type of addressing 7- or 10-bit address. For instance, a
slave can be programmed with 7-bit addressing and a mas-
ter with 10-bit addressing, and vice versa.
2. Define
a
maximum time-out parameter,
MAX_T_POLL_COUNT, such that if any repeated poll-
ing operation exceeds this maximum value, an error is
reported.
3. Write to the I2C_TAR register the address of the I2C
device to be addressed (bits 9:0). This register also
indicates whether a General Call or a START BYTE
command is going to be performed by I2C.
3. Execute a blocking thread/process/function that pre-
vents any further I2C master transactions to be started
by software, but allows any pending transfers to be
completed.
4. Only applicable for high-speed mode transfers. Write
to the I2C_HS_MADDR register the desired master
code for the I2C controller. The master code is pro-
grammer-defined.
Note 16: This step can be ignored if I2C controller is programmed to
operate as an I2C slave only.
4. The variable POLL_COUNT is initialized to zero.
5. Set I2C_ENABLE to 0.
5. Enable the I2C controller by writing a 1 in bit 0 of the
I2C_ENABLE register.
6. Read the I2C_ENABLE_STATUS register and test
the I2C_EN bit (bit 0). Increment POLL_COUNT by
one. If POLL_COUNT >= MAX_T_POLL_COUNT, exit
with the relevant error code.
6. Now write transfer direction and data to be sent to
the I2C_DATA_CMD register. If the I2C_DATA_CMD
register is written before the I2C controller is enabled,
the data and commands are lost as the buffers are kept
cleared when I2C controller is disabled.
7. If I2C_ENABLE_STATUS[0] is 1, then sleep for
ti2c_poll and proceed to the previous step.
This step generates the START condition and the
address byte on the I2C controller. Once I2C controller
is enabled and there is data in the TX FIFO, I2C con-
troller starts reading the data.
Otherwise, exit with a relevant success code.
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• Supports Pulse width and Pulse Distance encoding
Bluetooth Low Energy 4.2 SoC
26 InfraRed Generator
• Supports Manchester encoding
The InfraRed generator provides a flexible way of
transmitting any IR code used in remote controls. It has
an efficient message queue where users can describe
the waveform of a specific IR command in just a few
bytes independently from the protocol. It sits on the 16-
bit APB bus and receives a separate, up to 16MHz
clock used for the carrier generation.
• Supports Time mode (no carrier)
• Any combination of Mark and Space symbols
• Code FIFO of 32 16-bit words for encoding com-
mands
• Automatic Repeat function, transparent to SW
• Interrupt generation upon transmit completion
Features
• Carrier frequencies from 30 to 60 KHz
IRgen_clk
CARRIER GEN
Carrier
APB
Interface
APB
Register File
Frequency
Generator
30‐60KHz
IR
Code FIFO
16bit x 32 depth
Digital
Message
Generator
From
Register File
Message Decoding
Paint
Message
Generator
Repeat FIFO
16bit x 8 depth
INPUT STAGE
MODULATOR
OUTPUT STAGE
Figure 90: InfraRed Generator Block Diagram
26.1 ARCHITECTURE
Space) and the symbol duration within a code word
for HW to be able to understand and proceed
accordingly to the correct modulation.
The IR generator is based upon the concept of using
two different ways of describing data, being able to
support any IR protocol:
The composition of a command consists of a number
of control words which contain information about digital
or paint messages in an efficient way. A breakdown of
the well-known IR code NEC command is presented in
Figure 91 as an example:
• Digital Message: This message represents a logic 1
or a logic 0 and is clearly described in form of Mark
and Space duration as well as sequence.
• Paint Message: This message represents a totally
custom "painted" waveform. The way of efficiently
describing this, is to encode the symbol type (Mark/
Paint
Message
Tail
Paint
Message
Header
Digital Messages
Address/Command
Figure 91: Paint/Digital messages on a NEC based example
The encoding of the Paint/Digital messages can be
implemented according to Table 48 and Table 49:
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Output Stage
This sub-block can be programmed to invert the output
optionally
Table 48: IR Digital Message Encoding
Bit
Name
Description
26.2 PROGRAMMING
15
Message
Type
1 = Digital message.
That means that the
message information
itself defines logic 1 or
logic 0
Initially the clock of the block has to be enabled by
asserting the CLK_PER_REG[IR_CLK_ENABLE] bit.
The carrier ON and OFF time in clock cycles have to
be programmed at IR_FREQ_CARRIER_Oxx_REGs.
Following that, the logic one and zero are defined in
terms of clock cycles high (mark) and clock cycles low
14:11
10:0
Message
Length
Number of valid bits
minus 1. Range 0 to 10
(zero)
with
help
of
the
IR_LOGIC_ONE/
ZERO_TIME_REGs
Message
Payload
Digital Message consist-
ing of logic 1s and logic
0s
Another important feature that needs to be initialized is
whether the logic one/zero start with a mark and is fol-
lowed by a zero, or the other way around. This is
defined in IR_CTRL_REG[IR_LOGIC_ONE_FORMAT]
and
IR_CTRL_REG[IR_LOGIC_ZERO_FORMAT]
respectively. Finally, the time required for an automated
retransmit is defined at IR_REPEAT_TIME_REG.
Table 49: IR Paint Message Encoding
Bit
Name
Description
Sending commands using a specific protocol is simply
writing the correct words into the Code FIFO and then
set IR_CTRL_REG[IR_TX_START] to trigger the trans-
mission. The actual word values have to comply to the
encoding schemes as presented in Table 48 and Table
49.
15
Message
Type
0 = Paint message
14
Symbol
Type
1 = Mark
0 = Space
13:0
Duration
Mark/Space duration in
carrier clock cycles
So, basically, the MSbit of the word defines if the mes-
sage is a digital or a paint one.
The block consists of four sub-blocks:
Input Stage
it consists of the APB interface the Register File, 2
FIFOs and the Message Decoding engine. This sub-
block is responsible for the configuration of the system
and the storage and decoding of the encoded words.
These words will reside in the Code FIFO. The Repeat
FIFO can be used to load special commands for
repeating a key press i.e. this is only protocol depend-
ent. The output of the Code FIFO is decoded by the
Message Decoding engine and pushed in forms of
commands into the next sub-block, the modulator. This
sub-block is also responsible for firing up the repeat
timer in case that a key is constantly pressed. The rep-
etition time as well the message to be sent varies
according to the protocol.
Carrier Generator
This sub-block is responsible for the carrier frequency
generation. It has its own gated clock which can be up
to 16MHz and can generate frequencies in the range of
30 - 60 KHz.
Modulator
This sub-block is responsible for the generation of the
modulation signal which gates the carrier clock pulse
train. The Modulator state machine select between dig-
ital or pain message and controls the gate accordingly.
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Bluetooth Low Energy 4.2 SoC
27 Quadrature Decoder
The DA14681 has a integrated quadrature decoder
that can automatically decode the signals for the X, Y
and Z axes of a HID input device, reporting step count
and direction. This block can be used for waking up the
chip as soon as there is any kind of movement from the
external device connected to it. The block diagram of
the quadrature decoder is presented in Figure 92.
ChX_A
ChX_B
Features
• Three 16-bit signed counters that provide the step
count and direction on each of the axes (X, Y and Z)
ChX_A
ChX_B
• Programmable system clock sampling at maximum
16 MHz.
• APB interface for control and programming
• Programmable source from P0, P1 and P2 ports
• Digital filter on the channel inputs to avoid spikes
Figure 93: Moving forward on axis X
APB Interface
Register File
ChX_A
ChX_B
ChX_A
16-bit Counter
(X Axis)
ChX_B
ChY_A
16-bit Counter
(Y Axis)
ChY_B
ChX_A
ChX_B
ChZ_A
16-bit Counter
(Z Axis)
ChZ_B
Figure 94: Moving backwards on axis X
27.2 PROGRAMMING
Quad_Dec_IRQ
Interrupt Generator
Since six channels are required (two for each axis),
any GPIO can be mapped onto this block. The user
can choose which GPIOs to use for the channels by
programming the Pxy_MODE_REG[PID] with values
from 30 up to 44.
Figure 92: Block diagram of the Quadrature
Decoder
27.1 ARCHITECTURE
The digital filter eliminates any spike shorter than two
clock periods. The counter holds the movement events
of the channel. When a channel is disabled the counter
is reset. The counters are accessible via the APB bus.
Channels are expected to provide a pulse train with 90
degrees rotation as displayed in Figure 93 and Figure
94.
The quadrature decoder operates on the system clock.
The QDEC_CLOCKDIV register defines the number of
clock cycles of the period at which the decoding logic
samples the data on the channel inputs.
Depending on whether channel A or channel B is lead-
ing in phase, the quadrature decoding block calculates
the direction on the related axis. Furthermore, the
signed counter value represents the number of steps
moved.
The interrupt block monitors the movement events and
generates an interrupt every N events. The value for N
is defined in the QDEC_CTRL register.
Note: if there are events from multiple channels in the
same cycle, the interrupt event counter is only
increased by one.
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• Autonomous keyboard matrix scan without CPU
Bluetooth Low Energy 4.2 SoC
28 Keyboard Scanner
interference
The Keyboard Scanner is a programmable hardware
state machine which takes care of scanning the key-
board matrix and providing a clear view of key presses/
releases to SW. Once enabled, it takes care of any key
press or release without interfering with the CPU up to
the point that a de-bounced key press is identified. It
operates at a programmable frequency clock, allowing
for a very short scan cycle time. Debouncing of up to
12 simultaneous keys is allowed with dedicated coun-
ters. The resulting events are reported in a FIFO which
triggers an interrupt to the CPU at the end of the scan
cycle.
• 250 kHz clock for low power
• Maximum 16 Rows / 32 Columns support for any
GPIO
• Up to 12, 7-bit de-bounce counters, counting matrix
scan cycles
• Different press and release debounce times support
• Configurable row activation time
• Short scan cycle (1.3 us for a 10x10 matrix using 16
MHz clock)
The block diagram of the Keyboard Controller is pre-
sented in Figure 95.
• Row/Column report for a key press/release
Features
Rows
To/
from
GPIOs
Register
file
Matrix
Scan
Scrambler
Columns
APB
interface
Debounce
Module #1
APB16
Debounce
Module #2
. . .
Message
Fifo
message
WE
Key monitor
Debounce
Module #12
Full
Keyboard Scanner
Figure 95: Keyboard Scanner block diagram
28.1 ARCHITECTURE
The Keyboard Scanner comprises a Key Monitoring
state machine which controls the 12 Debouncing Mod-
ules, a Matrix Scan state machine which is responsible
for a totally automated scan of the preferred key matrix,
a FIFO which reports to the CPU what has been
pressed/released and an APB based register file which
is used to configure the block. A Scrambler is also uti-
lized to allow for flexibility in selecting GPIOs used as
rows or columns in the key matrix. Finally, the Key
Monitor gathers the column/row identities for an event
(key press or release), controls the 12 debouncing
modules and writes the message into the FIFO trigger-
ing an interrupt to the CPU.
Columns (y)
y2
y0
y1
y3
x0
x1
x2
x3
Rows
(x)
The Scrambler is implementing the assignment of spe-
cific GPIOs as rows (outputs) or columns (inputs) to
form a matrix as shown in the example of Figure 96.
Figure 96: 4x4 Keyboard Matrix example
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machine which takes care of the full scanning of the
key matrix without the CPU intervention. The scan
cycle is presented in Figure 97:
Bluetooth Low Energy 4.2 SoC
The configuration of the GPIOs can be realized with
use of the KBSCN_GPIOx_MODE_REG. The actual
size of the matrix shouild be programmed in
KBSCN_MATRIX_SIZE_REG.
The Matrix Scan block implements a finite state
Scan Cycle
End
Scan Cycle
Start
NO
YES
Set CUR_ROW= first
Set KEY_STAT = Not
Pressed
Is Inactive counter
reached and enable
set?
Drive CUR_ROW to low
Set
Wait for Row Activation
Time
CUR_ROW=NEXT_ROW
Read Columns
Increase Inactive
counter
Reset Inactive
counter
No
Yes
Are Columns all
= 0?
NO
Is KEY_STAT=
Pressed?
Set KEY_STAT =
Pressed
NO
YES
CHECK
DEBOUNCE
Have all Rows
been traversed?
YES
Figure 97: Scan cycle state machine
The FSM is setting each row to ‘0’, waits for a pre-con-
figured amount of time (activation time, programmed in
KBSCN_CTRL2_REG) and then it reads the columns
vector. If no zeros are sensed in the columns word, it
continues scanning until all rows have been exercised.
matrix.
Setting
bit
KBSCN_CTRL_REG[
KBSCN_INACTIVE_EN]=1 will automatically stop the
scanning activity if
KBSCN_CTRL_REG[KBSCN_INACTIVE_TIME] scan
cycles have elapsed without any key press or
debounce activity. If bit KBSCN_CTRL_REG[
KBSCN_INACTIVE_EN]=0, the scanning activity will
continue.
If there is a key press while scanning, a flag
(KEY_STAT) changes value. Flag KEY_STAT is also
set when debouncing (for a key press or release) is in
progress. As soon as the whole matrix has been
scanned, the debouncer modules are started. These
are incremented per scan cycle until a programmed
value is reached (KBSCN_DEBOUNCE_REG). Up to
12 concurrent debouncing operations are supported.
A key press/release message is prepared and stored in
the FIFO for the CPU after every scan cycle provided
that an event has been sensed. Each message is 11 bit
wide
and
can
be
read
at
KBSCN_MESSAGE_KEY_REG. Multiple messages
are possible in the case of multiple events (presses or
Next, the FSM checks on the inactivity of the key
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Bluetooth Low Energy 4.2 SoC
releases). Its structure is presented in Table 50:
The row active time, i.e. the time needed for the key
matrix to settle after applying a high or low level, has to
be programmed in the register field
KBSCN_CTRL2_REG[KBSCN_ROW_ACTIVE_TIME].
This value represents keyboard scanner clock cycles.
Table 50: Keyboard Scanner Message Structure
Bit
Description
The Matrix size has to be configured in
KBSCN_MATRIX_SIZE_REG and the debounce times
for press and release (can be different) should be pro-
grammed at KBSCN_DEBOUNCE_REG. Reset value
is 0x1 which means no debounce at all.
10
Designates if this is the last message of this
scan cycle. If it is high, then the value if the
register is 0xFF (the rest of the bits are all
high as well)
A special feature enables the scanning to automatically
9
Key state. 0: key is pressed, 1: key is
released
stop
after
KBSCN_CTRL_REG[KBSCN_INACTIVE_TIME] clock
cycles have elapsed without activity. Last thing to do for
the initialization is enable the interrupt of the Keyboard
8:4
3:0
Defines the number of the column of the key
event
Defines the number of the row of the key
event
Scanner
by
KBSCN_CTRL_REG[KBSCN_IRQ_FIFO_MASK] = 1
and
KBSCN_CTRL_REG[KBSCN_IRQ_MESSAGE_MASK
An interrupt is triggered towards the CPU in three
cases:
]
=
1
and enable the block by setting
KBSCN_CTRL_REG[KBSCN_EN]=1.
1. A message has been placed in the message
FIFO
The interrupt triggers the CPU to read a message
residing in the 12-words FIFO by reading the
KBSCN_MESSAGE_KEY_REG. This message con-
tains the key id that was recently pressed or released
as well as the indication of being or not, the only mes-
sage in the FIFO (KBSCN_LAST_ENTRY).
2. There is an underflow/overflow of the message
FIFO
3. The inactive time (in scan cycles) has elapsed
This information as well as the actual amount of mes-
sages residing in the FIFO can be accessed at
KBSCN_STATUS_REG. Note that, the FIFO can be
erased
by
SW
using
KBSCN_CTRL_REG[KBSCN_RESET_FIFO].
The number of KEYB_CLK cycles required for a full
scan cycle is given by the formula below:
C
= N
* (C
+2), where C
is the amount of
scan
ROWS
ACT
ACT
clocks for the activation time as programmed in
KBSCN_CTRL2_REG[KBSCN_ROW_ACTIVE_TIME]
and N
the number of rows.
ROWS
The clock can be 250 kHz up to 96 MHz if the PLL is
enabled.
28.2 PROGRAMMING
To initialize the Keyboard Scanner, the clock has to be
first
enabled
by
setting
and
CLK_PER_REG[KBSCAN_ENABLE]=1
KBSCN_CTRL_REG[KBSCN_CLKDIV] to the pre-
ferred value. The latter defines the clock frequency of
the block, when the clock divider is enabled by setting
CLK_PER_REG[KBSCAN_CLK_SEL]=0.
Following that, the rows have to be programmed in out-
put mode via the Pxy_MODE_REG registers. There is
a
dedicated PID for this namely number 47
(KB_ROW). The rows have to be explicitly defined as
pulled-up inputs with use of the respective
Pxy_MODE_REG registers.
Both rows and columns need to be defined in the
KBSCN_GPIOz_MODE_REG so that the Keyboard
Scanner understands which I/O is what.
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Features
29 Software Timers
• 16-bit general purpose timer
The Software Timer block contains 3 timer modules
that are software controlled, programmable and can be
used for various tasks. Timer0 is a 16-bit general pur-
pose timer with a PWM output capability. Timer2 is a
14-bit counter that generates three identical PWM sig-
nals in a quite flexible manner.
• Ability to generate 2 Pulse Width Modulated signals
(i.e. PWM0 and PWM1)
• Programmable output frequency:
f = (16, 8, 4, 2 MHz or 32 kHz) / (M+1)+(N+1)
with N = 0 to (2**16)-1, M = 0 to (2**16)-1
29.1 TIMER0
• Programmable duty cycle:
Timer0 is a 16-bit general purpose software program-
mable timer, which has the ability of generating Pulse
Width Modulated signals, namely PWM0 and PWM1. It
also generates the SWTIM_IRQ interrupt to the ARM
Cortex M0. It can be configured in various modes
regarding output frequency, duty cycle and the modula-
tion of the PWM signals.
= (M+1)/((M+1)+(N+1)) *100%
• Separately programmable interrupt timer:
T = (16, 8, 4, 2 MHz or 32 kHz) / (ON+1)
TIMER0_0N_REG
MSBreg
TIMER0_RELOAD_N_REG
LSBreg
TIMER0_RELOAD_M_REG
LSBreg
Timer0
LSBreg
MSBreg
MSBreg
1
0
1
0
loadnew
loadnew
LSBshadow
MSBshadow
LSBshadow
MSBshadow
T0-toggle
0
1
1
0
T0-counter=0
ON-counter
MSBreg
1
0
-1
loadnew
LSBreg
loadnew
LSBreg
T0-counter
MSBreg
TIM0_INT
loadnew
Interrupt generation:
PWM mode:
if (T0_toggle=0 and
ON-counter=0) OR
TIM0_CTRL =0->1
If T0-counter = 0 then
Compare
T0_ge_M0
T0_toggle = ~T0_toggle
PWM0
PWM1
If PWM_MODE = 1 then AND signal with clock
If PWM_MODE = 1 then AND signal with clock
to GPIO
December 13, 2012
Figure 98: Timer0 block diagram
Figure 98 shows the block diagram of Timer0. The 16
bits timer consists of two counters: T0-counter and ON-
enabling bit. The other four options can be selected by
setting the TIM0_CLK_SEL bit and the TMR_ENABLE
bit in the CLK_PER_REG (default disabled). This reg-
ister also controls the frequency via the TMR_DIV bits.
An extra clock divider is available that can be activated
via bit TIM0_CLK_DIV of the timer control register
TIMER0_CTRL_REG. This clock divider is only used
for the ON-counter and always divides by 10.
counter,
and
three
registers:
TIMER0_RELOAD_M_REG,
TIMER0_RELOAD_N_REG and TIMER0_ON_REG.
Upon reset, the counter and register values are
0x0000. Timer0 will generate a Pulse Width Modulated
signal PWM0. The frequency and duty cycle of PWM0
are
determined
by
the
contents
and
of
the
the
Timer0 operates in PWM mode. The signals PWM0
and PWM1 can be mapped to any GPIOs.
TIMER0_RELOAD_N_REG
TIMER0_RELOAD_M_REG registers.
Timer0 PWM mode
The timer can run at five different clocks: 16 MHz, 8
MHz, 4 MHz, 2 MHz or 32 kHz. The 32 kHz clock is
selected by default with bit TIM0_CLK_SEL in the
TIMER0_CTRL_REG register. This ‘slow’ clock has no
If bit TIM0_CTRL in the TIMER0_CTRL_REG is set,
Timer0 will start running. SWTIM_IRQ will be gener-
ated and the T0-counter will load its start value from
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(SWTIM_IRQ). The ON-counter will be reloaded with
the value of the TIMER0_ON_REG register. The T0-
counter as well as the M0-shadow register will be
Bluetooth Low Energy 4.2 SoC
the TIMER0_RELOAD_M_REG register, and will dec-
rement on each clock. The ON-counter also loads its
start value from the TIMER0_ON_REG register and
decrements with the selected clock.
loaded
with
the
value
of
the
TIMER0_RELOAD_M_REG register. At the same time,
the N0-shadow register will be loaded by the
TIMER0_RELOAD_N_REG register. Both counters will
be decremented on the next clock again and the
sequence will be repeated.
When the T0-counter reaches zero, the internal signal
T0-toggle
will
be
toggled
to
select
the
TIMER0_RELOAD_N_REG whose value will be
loaded in the T0-counter. Each time the T0-counter
reaches zero it will alternately be reloaded with the val-
ues of the M0- and N0-shadow registers respectively.
PWM0 will be high when the M0-value decrements and
low when the N0-value decrements. For PWM1 the
opposite is applicable since it is inverted. If bit
PWM_MODE in the TIMER0_CTRL_REG register is
set, the PWM signals are not HIGH during the ‘high
time’ but output a clock in that stage. The frequency is
based on the clock settings defined in the
CLK_PER_REG register (also in 32 kHz mode), but
the selected clock frequency is divided by two to get a
50 % duty cycle.
Note that it is possible to generate interrupts at a high
rate, when selecting a high clock frequency in combi-
nation with low counter values. This could result in
missed interrupt events.
During the time that the ON-counter is non-zero, new
values for the ON-register, M0-register and N0-register
can be written, but they are not used by the T0-counter
until a full cycle is finished. More specifically, the newly
written values in the TIMER0_RELOAD_M_REG and
TIMER0_RELOAD_N_REG registers are only stored
into the shadow registers when the ON-counter and
the T0-counter have both reached zero and the T0-
counter was decrementing the value loaded from the
TIMER0_RELOAD_N_REG register (see Figure 99).
If the ON-counter reaches zero it will remain zero until
the T0-counter also reaches zero, while decrementing
the
value
loaded
from
the
TIMER0_RELOAD_N_REGregister (PWM0 is low).
The counter will then generate an interrupt
clk
TIM0_CTRL
M
1
N
1
M
1
N
1
M
1
N
1
T0-counter
ON-counter
PWM0 pin
PWM1 pin
SWTIM_IRQ
0
0
0
3
0
1
0
0
0
3
4
2
0
4
2
M0=1N0=1 ON=4
Figure 99: Timer 0 Pulse PWM mode
At start-up both counters and the PWM0 signal are
LOW so also at start-up an interrupt is generated. If
Timer0 is disabled all flip-flops, counters and outputs
are in reset state except for the ON-register, the
from
the
address
of
either
or
the
the
TIMER0_RELOAD_N_REG
TIMER0_RELOAD_M_REG register, returns the value
of the T0-counter.
TIMER0_RELOAD_N_REG
TIMER0_RELOAD_M_REG register.
register
and
the
It is possible to freeze Timer0 with bit FRZ_SWTIM of
the register SET_FREEZE_REG. When the timer is fro-
zen the timer counters are not decremented. This will
freeze all the timer registers at their last value. The
timer will continue its operation again when bit
The timer input registers
TIMER0_RELOAD_N_REGand
TIMER0_RELOAD_M_REG can be written and the
counter registers ON-counter and T0-counter can be
read. When reading from the address of the ON-regis-
ter, the value of the ON-counter is returned. Reading
ON-register,
FRZ_SWTIM
is
cleared
via
register
RESET_FREEZE_REG.
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29.2 TIMER1
• One shot pulse with programmable pulse width
• 16-bit clock pre-scaler
Timer1 is a 16-bit up/down timer with capture input (2
channels) and one shot pulse capability. This timer is
also able of generating a PWM signal with programma-
ble output frequency. Timer1 is the only timer that stays
alive when the DA14681 is in sleep mode. It counts
using the sleep clock and can still control one output,
namely the P0_6 while the rest of the IOs are frozen to
reduce power dissipation.
• Up/down counting capability with free running mode
• Operating at sleep clock when system is in sleep
mode
• Counts while in Extended Sleep mode.
• PW5 controls the P0_6 output while in Extended
Sleep mode
Features
• Programmable output frequency
F = 16 MHz/2 to 16 MHz/((2**14)-1)
• 16-bit general purpose timer
• Generates a Pulse Width Modulated signal (PWM5)
• 2 channels for capture input triggering
• Dedicated interrupt line
TIMER1
System bus
0
13
0
0
13
13
PWM5_DUTY
TRIPLE_PWM_FREQ
PWM5_FREQ
Comparators
equal
Reset
Set
T1_PWM5
16 bits
Sys clk
slp_clk
16-bit Prescaler
T1_CNTR
Hold
reset
+1
Capture Word 1
Capture Word 2
Capture
Event
GPIOs
GPIOs
One Pulse
hot
Figure 100: PWM Timer 1 block diagram
Timer1
is
enabled
by
CAPTIM_CAPTURE_GPIO1_REG while upon trigger-
ing of the second event, the current timer value is
stored into CAPTIM_CAPTURE_GPIO2_REG. In this
way, the timing interval between 2 successive events
can be measured with precision.
CAPTIM_CTRL_REG[CAPTIM_EN] bit. This is the
only timer that supports up/down counting with means
of
programming
the
CAPTIM_CTRL_REG
[CAPTIM_COUNT_DOWN_EN] bit.
Timer1 supports capturing 2 externally triggered events
(positive or negative edges) on GPIOs that can be
selected. When the first event is captured, the current
value of the 16-bit free-running timer is stored into
The
Timer1
support
one
shot
pulse
(CAPTIM_CTRL_REG[CAPTIM_ONESHOT_MODE_
EN]). Whenever either of the two externally selected
GPIOs triggers an event, a programmable width pulse
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can be driving external devices even during extended
Bluetooth Low Energy 4.2 SoC
(CAPTIM_SHOTWIDTH_REG) will be output on
another
GPIO
programmed
by
sleep. However, Timer1 will not work in sleep mode if
Pxx_MODE_REG[PID]=53. Furthermore, the time up
to the start of the pulse is again configurable by
CAPTIM_RELOAD_REG.
CLK_TMR_REG[TMR1_DIV] has a value different than
0.
Note that, the PWM functionality is decoupled from the
Timer1 is kept alive while the system is in Extended
Sleep mode. The PWM5 signal which can be config-
timer1
counting
which
can
be
read
at
CAPTIM_TIMER_VAL_REG at any given time while
the chip is in active mode.
ured
by
CAPTIM_PWM_FREQ_REG
and
CAPTIM_PWM_DC_REG with respect to the fre-
quency and duty cycle is automatically connected to
the P0_6 pin output buffer. Hence, if enabled
(CLK_TMR_REG[P06_TMR1_PWM_MODE]=1), P0_6
An overview of the timer modes, reset values and inter-
rupt generation is presented in the following table:
Table 51: Timer1 interrupt generation
Mode
Reset Value
Interrupt Generated
Count up with Reload
Count down with Reload
Count up free running
0
When reload value reached
When 0 reached
CAPTIM_RELOAD_REG
0
When reload value reached
29.3 TIMER2
Timer2 has three Pulse Width Modulated (PWM) out-
puts. The block diagram in shown in Figure 101:.
Features
• 14-bit general purpose timer
• Generates 3 Pulse Width Modulated signals (i.e.
PWM2, PWM3 and PWM4)
• Input Clock frequency 16 MHz
• Programmable output frequency
F = 16 MHz/2 to 16 MHz/((2**14)-1)
• Three outputs with Programmable duty cycle from
0% to 100%
• Used for white LED intensity (on/off) control
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TIMER2
System bus
0
0
13
0
0
13
13
13
PWM2_DUTY
TRIPLE_PWM_FREQ
PWM4_DUTY
PWM3_DUTY
T2_PWM3
T2_PWM1
Reset
Set
equal3
3x14 bits
Comparators
equal1
equal2
Reset
Set
14 bits
16 MHz
T2_DUTY_CNTR
reset
Hold
+1
14 bits
/Reset block
=0
Reset
Set
T2_PWM2
T2_FREQ_CNTR
TRIPLE_PWM_ENABLE
-1
TRIPLE_PWM_CTRL_REG
SW_PAUSE_EN
RX_EN
TX_EN
TRIPLE_PWM_CTRL_REG
HW_PAUSE_EN
Figure 101: PWM Timer 2 block diagram
The Timer2 is clocked with the system clock (16 MHz)
ment a certain phase shift. These signals also control
the LED pins with means of
LED_CONTROL_REG[LEDx_SRC_SEL].
and
can
be
enabled
with
TRIPLE_PWM_CTRL_REG[TRIPLE_PWM_ENABLE].
T2_FREQ_CNTR determines the output frequency of
the T2_PMWn output. This counter counts down from
The Timer2 is enabled/disabled by programming the
TRIPLE_PWM_CTRL_REG[TRIPLE_PWM_EN] bit.
the
value
stored
in
register
The timing diagram of Timer2 is shown in Figure 102.
TRIPLE_PWM_FREQUENCY. At counter value 0,
T2_FREQ_CNTR sets the T2_PWMn output to ‘1’ and
the counter is reloaded again.
Freeze function
During RF activity it may be desirable to temporarily
suppress the PWM switching noise. This can be done
T2_DUTY_CNTR is an up-counter that determines the
duty cycle of the T2_PWMn output signal. After the
block is enabled, the counter starts from 0. If
T2_DUTY_CNTR is equal to the value stored in the
respective PWMn_DUTY_CYCLE register, this resets
the T2_PWMn output to 0. T2_DUTY_CNTR is reset
when TRIPLE_PWM_FREQUENCY is 0.
by
setting
1.
TRIPLE_PWM_CTRL_REG[HW_PAUSE_EN]
=
The effect is that whenever there is a transmission or a
reception process from the Radio, T2_DUTY_CNTR is
frozen and T2_PWMx output is switched to ‘0’ to disa-
ble the selected T2_PWM1, T2_PWM2, T2_PWM3. As
soon as the Radio is idle (i.e. RX_EN or TX_EN signals
are zero), T2_DUTY_CNTR resumes counting and
finalizes the remaining part of the PWM duty cycle.
Note that the value of PWMn_DUTY_CYCLE must be
less or equal than TRIPLE_PWM_FREQUENCY.
Another feature of Timer2 PWM signals is the fact that
the start and end cycle of the PWM wave can be pro-
grammed separately for the three signals using the
PWMx_START_CYCLE and PWMx_END_CYCLE. In
this way, the PWM signals can be configured to imple-
TRIPLE_PWM_CTRL_REG[SW_PAUSE_EN] can be
set to ‘0’ to disable the automatic, hardware driven
freeze function of the duty counter and keep the duty
cycle constant.
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Bluetooth Low Energy 4.2 SoC
Note that the RX_EN and TX_EN signals are not soft-
ware driven but controlled by the BLE core hardware.
CLK (16 MHz)
TRIPLE_PWN_EN
T2_DUTY_CNTR
T2_FREQ_CNTR
T2_PWMn
0
0
1
2
2
2
3
.
1
...
0
0
1
2
3
N
N
N-1
N-2
N-...
...
N
N-1 N-2 N-3
Figure 102: Timer 2 PWM timing diagram
29.4 BRTH_TIMER
This timer implements an automated breathing function
for external LEDs without software interference. The
resulting PWM signal can be mapped on any of the
GPIOs of the system. It uses the system clock as input.
Features
• Maximum and minimum duty cycle configuration
• PWM duty cycle step granularity up to 256
• Input clock frequency 16 MHz
• Programmable output frequency
f = f
/(1 to 256) MHz
system
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• Non-Maskable Interrupt (NMI) or WDOG reset.
30 Watchdog Timer
• Optional automatic WDOG reset if NMI handler fails
to update the Watchdog register.
The watchdog timer is an 8-bit timer with sign bit that
can be used to detect an unexpected execution
sequence caused by a software run-away and can
generate a full system reset or a Non-Maskable Inter-
rupt (NMI). Upon expiration, a HW reset is triggered.
• Non maskable Watchdog freeze of the Cortex-M0
Debug module when the Cortex-M0 is halted in
Debug state.Maskable Watchdog freeze by user pro-
gram.
Features
• 8 bits down counter with sign bit, clocked with a
10.24 ms clock for a maximum 2.6 s time-out.
Freeze Wakeup Timer, Software Timer, BLE master clock
WATCHDOG_CTRL_REG
[NMI_RST]
Set
Set by Software
Reset to 0
Reset to 0xFF
by SYS reset
WATCHDOG_REG[8-0]
Reset
Cortex-M0 (debug)
DHCSR[S_HALT]
by SYS reset
Bits[15-9] =0
Write_enable
NMI_RST
1
0
<= 0
WDOG reset
NMI
Freeze
Watchdog timer
1
0
OR
<= -16
SET_FREEZE_REG
[FRZ_WDOG]
(default)
10.24 ms
1
Set
= 0
Reset
RESET_FREEZE_REG
[FRZ_WDOG]
0
Figure 103: Watchdog Timer block diagram
The 8 bits watchdog timer is decremented by 1 every
10.24 ms. The timer value can be accessed through
the WATCHDOG_REG register which is set to 255
triggered, the SYS_CTRL_REG[REMAP_ADR0] bits
will retain their value and the Cortex-M0 will start exe-
cuting again from the current selected memory at
address zero. Refer to the “Reset” chapter for an over-
view of the complete reset circuit and conditions.
(FF ) at reset. This results in a maximum watchdog
16
time-out of ~2.6 s. During write access the
WATCHDOG_REG[WDOG_WEN] bits must be 0. This
provides extra filtering for a software run-away writing
all ones to the WATCHDOG_REG. If the watchdog
counter reaches 0, the counter value will get a negative
value by setting bit 8. The counter sequence becomes
For debugging purposes, the Cortex-M0 Debug mod-
ule can always freeze the watchdog by setting the
DHCSR[DBGKEY | C_HALT | C_DEBUGEN] control
bits (reflected by the status bit S_HALT). This is auto-
matically done by the debug tool, e.g. during step-by-
step debugging. Note that this bit also freezes the
Wakeup Timer, the Software Timer and the BLE master
clock. For additional information also see the
DEBUG_REG[DEBUGS_FREEZE_EN] mask register.
The C_DEBUGEN bit is not accessible by the user
software to prevent freezing the watchdog.
1, 0, 1FF (-1), 1FE (-2),...1F0 (-16).
16
16
16
If WATCHDOG_CTRL_REG[NMI_RST] = 0, the watch-
dog timer will generate an NMI if the watchdog timer
reaches 0 and a WDOG reset if the counter becomes
less or equal to -16 (1F0 ). The NMI handler must
16
write any value > -16 to the WATCHDOG_REG to pre-
vent the generation of a WDOG reset at counter value -
16 after 16*10.24 = 163.8 ms.
In addition to the S_HALT bit, the watchdog timer can
also be frozen if NMI_RST=0 and SET_FREEZE_REG
[FRZ_WDOG] is set to ‘1’. The watchdog timer
If WATCHDOG_CTRL_REG[NMI_RST] = 1, the watch-
dog timer generates a WDOG reset if the timer
becomes less or equal than 0.
resumes
counting
when
RESET_FREEZE_REG[FRZ_WDOG] is set to ‘1’. The
WATCHDOG_CTRL_REG[NMI_RST] bit can only be
set by software and will only be reset on a SYS reset.
The WDOG reset is one of the SYS (system) reset
sources and resets the whole device, including setting
the WATCHDOG_REG register to 255, except for the
RST pin, the Power On reset, the HW reset and the
DBG (debug module) reset. Since the HW reset is not
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ble rise and fall times and integrated D+/D- pull-up
Bluetooth Low Energy 4.2 SoC
31 USB Interface
The USB interface is an integrated USB Node control-
ler compatible with the full and low speed USB specifi-
cation version 1.1.
resistors.
• Serial Interface Engine (SIE) consisting of a Media
Access Controller (MAC), USB Specification 1.0 and
1.1 compliant
It integrates a Serial Interface Engine (SIE) and USB
endpoint (EP) FIFOs. Seven endpoint pipes are sup-
ported: one for the mandatory control endpoint and six
to support interrupt endpoints. Each endpoint pipe has
a dedicated FIFO, 8 bytes for the control endpoint, and
64 bytes for the other endpoints.
• USB Function Controller with seven FIFO-based
Endpoints:
• One bidirectional Control Endpoint 0 (8 bytes)
• Three Transmit Endpoints (64 bytes each)
• Three Receive Endpoints (64 bytes each)
The USB transceiver module is accessed through
USB_Dp and USB_Dm pins.
• Automatic Data PID toggling/checking and NAK
packet recovery (maximum 256 x32 bytes of data =
8 kB)
Features
• Full Speed USB node
• Interfaces to USB V1.1 transceiver with programma-
System bus
Endpoint/Control FIFOs
Control
Status
USBFS_IRQ
RX
(OUT)
TX
(IN)
SIE
Clock
Recovery
Media Access Controller (MAC)
6/48MHz Clock
USB Event
Detect
Physical Layer Interface (PHY)
USB Transceiver
Module
LDO_USB
500
kOhm
500
kOhm
VSS
Figure 104: USB Node block diagram
Access Controller (MAC) modules. The PHY module
VDD_USB VBUS
USB_Dp USB_Dm
31.1 SERIAL INTERFACE ENGINE
includes the digital-clock recovery circuit, a digital glitch
filter, End Of Packet (EOP) detection circuitry, and bit
The SIE is comprised of physical (PHY) and Media
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automatically. If the endpoint pipe is isochronous and
enabled but no data is present, a bit stuff error followed
by an end of packet is sent on the bus.
Bluetooth Low Energy 4.2 SoC
stuffing and unstuffing logic. The MAC module includes
packet formatting, CRC generation and checking, and
endpoint address detection. It provides the necessary
control to give the NAK, ACK, and STALL responses
as determined by the Endpoint Pipe Controller (EPC)
for the specified endpoint pipe. The SIE is also respon-
sible for detecting and reporting USB-specific events,
such as NodeReset, NodeSuspend, and NodeRe-
sume. The module output signals to the transceiver are
well matched (under 1 ns) to minimize skew on the
USB signals.
Similarly, on detection of an OUT token addressed to
an endpoint, the endpoint pipe should receive a data
packet sent by the host and load it into the appropriate
FIFO. If the endpoint pipe is stalled, a STALL hand-
shake packet is sent. If the endpoint pipe is enabled
but no buffer is present for data storage, a NAK hand-
shake packet is sent.
A disabled endpoint does not respond to IN, OUT, or
SETUP tokens.
The USB specifications assign bit stuffing and unstuff-
ing as the method to ensure adequate electrical transi-
tions on the line to enable clock recovery at the
receiving end. The bit stuffing block ensures that when-
ever a string of consecutive 1’s is encountered, a 0 is
inserted after every sixth 1 in the data stream. The bit
unstuffing logic reverses this process.
The EPC maintains separate status and control infor-
mation for each endpoint pipe.
For IN tokens, the EPC transfers data from the associ-
ated FIFO to the host. For OUT tokens, the EPC trans-
fers data in the opposite direction.
The clock recovery block uses the incoming NRZI data
to extract a data clock (12 MHz FS, 1.5 MHz LS) from a
48 (FS) / 6(LS) MHz input clock. This clock is used in
the data recovery circuit. The output of this block is
binary data (decoded from the NRZI stream) which can
be appropriately sampled using the extracted 12(6)
MHz clock. The jitter performance and timing charac-
teristics meet the requirements set forth in Chapter 7 of
the USB Specification.
31.2 ENDPOINT PIPE CONTROLLER (EPC)
The EPC provides the interface for USB function end-
points. An endpoint is the ultimate source or sink of
data. An endpoint pipe facilitates the movement of data
between USB and memory, and completes the path
between the USB host and the function endpoint.
According to the USB specification, up to 31 such end-
points are supported at any given time. USB allows a
total of 16 unidirectional endpoints for receive and 16
for transmit. As the control endpoint 0 is always bidirec-
tional, the total number is 31. The Full/Low Speed USB
node supports a maximum of seven endpoint pipes
with the same function address. See Figure 105 for a
schematic diagram of EPC operation.
A USB function is a USB device that is able to transmit
and receive information on the bus. A function may
have one or more configurations, each of which
defines the interfaces that make up the device. Each
interface, in turn, is composed of one or more end-
points.
Each endpoint is an addressable entity on USB and is
required to respond to IN and OUT tokens from the
USB host (typically a PC). IN tokens indicate that the
host has requested to receive information from an end-
point, and OUT tokens indicate that it is about to send
information to an endpoint.
On detection of an IN token addressed to an endpoint,
the endpoint pipe should respond with a data packet. If
the endpoint pipe is currently stalled, a STALL hand-
shake packet is sent under software control. If the end-
point pipe is enabled but no data is present, a NAK
(Negative Acknowledgment) handshake packet is sent
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Control Registers
FIFOs
Function
Address
Compare
EP0
USB
USB SIE
Control Endpoint Pipe
EP3
...
EP1.
Control Registers
FIFO
Receive Endpoint Pipes
CPU
EP3
...
EP1
Control Registers
FIFO
Transmit Endpoint Pipes
Figure 105: Endpoint Operation
31.3 FUNCTIONAL STATES
this event and signals it by setting the SD3 bit in the
USB_ALTEV register, which causes an USB_INT, if
enabled, to be generated. The firmware should
respond by putting the USB node in NodeSuspend
state.
31.3.1 Line Condition Detection
At any given time, the USB node is in one of the follow-
ing states (see Figure 106 for the functional state tran-
sitions):
The USB node can resume normal operation in two
ways:
• NodeOperational: Normal operation
• Host initiated. By detecting a resume signalling fol-
lowed by Low speed EOP on the USB bus, an
ALTEV[RESUME] interrupt is generated. The firm-
ware responds by setting the NodeOperational in
the USB_NFRS_REG.
• NodeSuspend: Device operation suspended due to
USB inactivity
• NodeResume: Device wake-up from suspended
state
• NodeReset: Device reset
• Device initiated. By detection of a local event, e.g
GPIO key is pressed, a KEYB_INT is generated.
The firmware releases the USB node from Node-
Suspend state by initiating a NodeResume on the
USB using the NFSR register. The node firmware
must ensure at least 5 ms of Idle on the USB, by
checking the SD5 in the USB_ALTEV before going
to the NodeResume state.
The NodeSuspend, NodeResume, or NodeReset line
condition causes a transition from one operating state
to another. These conditions are detected by special-
ized hardware and reported via the Alternate Event
(ALTEV) register. If interrupts are enabled, an interrupt
is generated upon the occurrence of any of the speci-
fied conditions.
NodeResume State: In NodeResume state, a constant
“K” is signalled on the USB. This should last for at least
1 ms and no more than 15 ms, after which the USB
host should continue sending the NodeResume signal
for at least an additional 20 ms, and then completes
the NodeResume operation by issuing the End Of
Packet (EOP) sequence.
NodeOperational State: This is the normal operating
state of the node. In this state, the node is configured
for operation on the USB.
NodeSuspend State: A USB node is expected to enter
NodeSuspend state when 3 ms have elapsed without
any detectable bus activity. The USB node looks for
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To successfully detect the EOP, the firmware must
respond by setting NodeOperational in the
USB_NFRS_REG. Upon detection on the EOP, the
USB_ALTEV_REG[EOP] is set.
If no EOP is received from the host within 100 ms, the
software must re-initiate NodeResume.
NodeReset: When detecting
a NodeResume or
NodeReset signal while in NodeSuspend state, the
USB node can signal this to the CPU by generating an
interrupt.
USB specifications require that a device must be ready
to respond to USB tokens within 10 ms after wake-up
or reset.
31.4 FUNCTIONAL STATE DIAGRAM
Figure 106 shows the device states and transitions, as
well as the conditions that trigger each transition. All
Full/Low Speed USB node state transitions are initiated
by the firmware.
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MCTRL_REG[USBEN] =0
set_NodeReset
MCTRL_REG[USBEN=1]
Reset
MCTRL_REG[USB_NAT] =1
Attached
Hub reset or
Deconfigured
POWER_STATUS_REG[VBUS_OK] =1
Powered
Power interruption &
set_NodeReset
ALTEV_REG[USB_RESET]=1 &
set_NodeOperational
Resume complete &
set_NodeOperational
Resume
local_event &
set_NodeReset
set_NodeOperational
usb_sd5_detect &
ALTEV_REG[USB_SD3]=1&
set_NodeSuspend
Set_NodeResume
FAR_REG=0x80
EPC0_REG=0x40
Suspend
Default
ALTEV_REG[USB_RESUME]=1&
set_NodeOperational
ALTEV_REG[USB_RESET]=1
Address Assigned
FAR_REG=(0x80|xx)
Addressed
Suspend/Resume states as above
EPC0_REG=(0x00||yy)
Device DeConfigured
Device Configured
Configured
Suspend/Resume states as above
Bold Italics = Transition initiated by firmware
Figure 106: Node Functional State Diagram
Note 17: When the node is not in NodeOperational state, all registers are frozen with the exception of the endpoint controller state machines, and the
TX_EN, LAST and RX_EN bits which are reset.
Note 18: In NodeResume state, resume signalling is propagated upstream.
Note 19: In NodeSuspend state, the node may enter a low power state and is able to detect resume signalling.
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Table 52: Functional states
State Transition
Condition Asserted
set_NodeReset
Node Functional State register NFS[1:0] bits are written with 00
b
(The firmware should only initiate set_NodeReset if RESET in the ALTEV register is set.)
set_NodeSuspend
Node Functional State register NFS[1:0] bits are written with 11
b
The firmware should only initiate set_suspend if SD3 in the ALTEV register is set.
set_NodeOperation
set_NodeResume
Node Functional State register NFS[1:0] bits are written with 10
b
Node Functional State register NFS[1:0] bits are written with 01
b
The firmware should only initiate clear_suspend if SD5 in the ALTEV register is set.
USB_RESET in the ALTEV register is set to 1
usb_reset_detect
local_event
A local event that should wake up the USB.
usb_sd5_detect
USB_SD5 in the ALTEV register is set to 1.
usb_suspend_detect USB_SD3 in the ALTEV register is set to 1.
usb_resume_detect
resume_complete
RESUME in the ALTEV register is set to1.
The node should stay in NodeResume state for at least 10 ms and then must enter USB Oper-
ational state to detect the EOP from the host, which terminates this Remote Resume opera-
tion. EOP is signalled when EOP in the ALTEV register is set to 1.
31.5 ADDRESS DETECTION
Packets are broadcast from the host controller to all the
nodes on the USB network. Address detection is imple-
mented in hardware to allow selective reception of
packets and to permit optimal use of microcontroller
bandwidth. One function address with seven different
endpoint combinations is decoded in parallel. If a
match is found, then that particular packet is received
into the FIFO; otherwise it is ignored.
Figure 107 shows a block diagram of the function
address and endpoint decoding. The incoming USB
Token, Packet Address field and four bits Endpoint field
are extracted from the incoming bit stream. The
address field is compared to the Function Address reg-
ister (FADR) and if a match is detected, the USB End-
point field is compared to all EP bit fields in the
Endpoint Control registers (EPCx). With IN tokens, the
transmit Endpoint Control registers are compared and
with OUT tokens the receive Endpoint Control registers
are compared. A match then enables the respective
endpoint FIFO and transfers the payload data to/from
the FIFO. Note that EPC0 is bidirectional and is ena-
bled for IN, OUT and SETUP tokens.
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- USB Packet -
Token
ADDR Field
Endpoint Field
FAR Register
match
match
IN, OUT, SETUP token
Enable Receive/Transmit FIFO0
USB_EPC0_REG[EP]
IN token
Enable Transmit FIFO1
Enable Receive FIFO1
USB_EPC1_REG[EP]
USB_EPC2_REG[EP]
OUT token
IN token
Enable Transmit FIFO2
USB_EPC3_REG[EP]
USB_EPC4_REG[EP]
OUT token
Enable Receive FIFO2
Enable Transmit FIFO3
Enable Receive FIFO3
IN token
USB_EPC5_REG[EP]
USB_EPC6_REG[EP]
OUT token
Figure 107: USB Function Address/Endpoint Decoding
31.6 TRANSMIT AND RECEIVE ENDPOINT FIFOS
The Full/Low Speed USB node uses a total of seven
transmit and receive FIFOs: one bidirectional transmit
and receive FIFO for the mandatory control endpoint,
three transmit FIFOs and three receive FIFOs. As
shown in Table 53, the bidirectional FIFO for the control
endpoint is 8 bytes deep. The additional unidirectional
FIFOs are 64 bytes each for both transmit and receive.
Each FIFO can be programmed for one exclusive USB
endpoint, used together with one globally decoded
USB function address. The firmware must not enable
both transmit and receive FIFOs for endpoint zero at
any given time.
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Table 53: USB Node Endpoint sizes
TX FIFO
RX FIFO
Endpoint No.
Size (Bytes)
Name
Size (Bytes)
Name
0
8 FIFO0
1
2
3
4
5
6
64
64
64
TXFIFO1 (IN)
TXFIFO2 (IN)
TXFIFO3 (IN)
64
64
64
RXFIFO1 (OUT)
RXFIFO2 (OUT)
RXFIFO3 (OUT)
If two endpoints in the same direction are programmed
with the same endpoint number [EP field] and both are
enabled, data is received or transmitted to/from the
endpoint with the lower number, until that endpoint is
disabled for bulk or interrupt transfers, or becomes full
or empty for ISO transfers. For example, if receive EP1
and receive EP2 both use endpoint 3 and are both
isochronous, the first OUT packet is received into EP1
and the second OUT packet into EP2, assuming no
firmware interaction in between. For ISO endpoints,
this allows implementing a ping-pong buffer scheme
together with the frame number match logic.
If an OUT token is received for the FIFO, the firmware
is informed that the FIFO has received data only if
there was no error condition (CRC or STUFF error).
Erroneous receptions are automatically discarded.
Endpoints in different directions programmed with the
same endpoint number operate independently.
31.7 BIDIRECTIONAL CONTROL ENDPOINT FIFO0
FIFO0 should be used for the bidirectional control end-
point zero. It can be configured to receive data sent to
the default address with the DEF bit in the EPC0 regis-
ter.
The Endpoint 0 FIFO can hold a single receive or
transmit packet with up to 8 bytes of data.
Note: A packet written to the FIFO is transmitted if an
IN token for the respective endpoint is received. If an
error condition is detected, the packet data remains in
the FIFO and transmission is retried with the next IN
token.
The FIFO contents can be flushed to allow response to
an OUT token or to write new data into the FIFO for the
next IN token.
Figure 108 shows the Endpoint 0 state machine. In
state TXWAIT, if USB_RXC0_REG[SETUP_FIX]=0, no
state change will take place if a SETUP is received.
With SETUP_FIX=1, the state machine goes to IDLE,
flushes to EP0 and receives the token in the RXWAIT
state. If a SETUP is received in states TXFILL or
RXDRAIN and SETUP_FIX=1, the SETUP will be
ignored and no ACK is send. This allows undisturbed
FIFO filling/emptying. This state is usually present for a
very short time and will force the host to retransmit the
SETUP once.
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IN_token: NACK
If USB_NFSR_REG[USB_NFS] != NodeOperational
OUT_token: NACK
RXC0_REG[RX_EN] = 0
TXC0_REG[TX_EN] = 0
SETUP_token && SETUP_FIX=1
IDLE
Note: TX_EN must be set to 0
by Firmwware
Write to EP0
SETUP_token
RXC0_REG[RX_EN]=1
Yes
If STALL_FIX=0
TX_EN=0
TXC0_REG[TX_EN]=1
Yes
If STALL_FIX=0
RX_EN=0
No
!TX_EN || FLUSH ||
(STALL && stall_sent
&& eot)
Yes
!RX_EN ||
(OUT_token && STALL
&& stall_sent
No
IN_token: NACK
&&eot
TXWAIT
RXWAIT
OUT_token:NACK
SETUP_token &&
SETUP_FIX=0
IN_token &&
!STALL
No
OUT_token ||
SETUP_token)
TXC0_REG[TX_EN]=1
Yes
TXFILL
!NodeOperational
RXFILL
TXC0_REG[FLUSH]=1
&& !TX_EN
No
eot
SETUP_token: If SETUP_FIX=0 &&
Previous_token = SETUP then ACK
else No handshake
Yes
cr16ok && !rxbiterror
Yes
No
If SETUP_FIX=1:
No handshake
IN_token, OUT_token: NACK
OUT, SETUP: ACK
RX_EN=0
Blue text indicate
fixes
RXDRAIN
TXDRAIN
SETUP_token: If SETUP_FIX=0 &&
Previous_token = SETUP then ACK
else No handshake
If SETUP_FIX=1:
No handshake
IN_token, OUT_token: NACK
No
Yes
eot || !NodeOperational
No
Yes
(fifo_empty & !rxlast)
|| rxflush
TX_EN=0
Figure 108: Endpoint 0 Operation
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the FIFO contents while the USB packet is transmitted
Bluetooth Low Energy 4.2 SoC
31.8 TRANSMIT ENDPOINT FIFO (TXFIFO1 TO
TXFIFO5)
on the bus.
The Transmit FIFOs for Endpoints 1, 3 and 5 support
bulk and interrupt USB packet transfers larger than the
actual FIFO size. Therefore the firmware must update
Figure 109 illustrates the operation of the transmit
FIFOs.
FLUSH (Resets TXRP and TXWP)
TXRP
TFnS - 1
0x0
+
TXFL = TXWP - TXRP
+
TX FIFO n
TXWP
+
TCOUNT = TXRP - TXWP (= TFnS - TXFL)
Figure 109: Tx FIFO operation
TFnS: Transmit FIFO n Size
This value indicates how many bytes are currently in
the FIFO.
This is the total number of bytes available within the
FIFO.
A FIFO warning is issued if TXFL decreases to a spe-
cific value. The respective WARNn bit in the FWR reg-
ister is set if TXFL is equal to or less than the number
specified by the TFWL bit in the TXCn register.
TXRP: Transmit Read Pointer
This pointer is incremented every time the Endpoint
Controller reads from the transmit FIFO. This pointer
wraps around to zero if TFxS is reached. TXRP is
never incremented beyond the value of the write
pointer TXWP.
TCOUNT: Transmit FIFO Count
This value indicates how many empty bytes can be
filled within the transmit FIFO. This value is accessible
by firmware via the TXSn register.
An underrun condition occurs if TXRP equals TXWP
and an attempt is made to transmit more bytes when
the LAST bit in the TXCMDx register is not set.
31.9 RECEIVE ENDPOINT FIFO (RXFIFO2 TO
RXFIFO6
The Receive FIFOs for the Endpoints 2, 4 and 6 sup-
port bulk, interrupt USB packet transfers larger than the
actual FIFO size. If the packet length exceeds the FIFO
size, the firmware must read the FIFO contents while
the USB packet is being received on the bus.
TXWP: Transmit Write Pointer
This pointer is incremented every time the firmware
writes to the transmit FIFO. This pointer wraps around
to zero if TFnS is reached.
If an attempt is made to write more bytes to the FIFO
than actual space available (FIFO overrun), the write to
the FIFO is ignored. If so, TCOUNT is checked for an
indication of the number of empty bytes remaining.
Figure 110 illustrates the operation of the Receive
FIFOs.
TXFL: Transmit FIFO Level
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FLUSH (Resets RXRP and RXWP)
RXRP
RFnS - 1
0x0
RCOUNT = RXWP - RXRP
+
+
RX FIFO n
RXWP
+
RXFL = RXRP - RXWP (= RFnS - RCOUNT)
Figure 110: Rx FIFO operation
RFnS: Receive FIFO n Size
RCOUNT: Receive FIFO Count
This is the total number of bytes available within the
FIFO.
This value indicates how many bytes can be read from
the receive FIFO. This value is accessible by firmware
via the RXSn register.
RXRP: Receive Read Pointer
31.10 INTERRUPT HIERARCHY
This pointer is incremented with every read of the firm-
ware from the receive FIFO. This pointer wraps around
to zero if RFnS is reached. RXRP is never incremented
beyond the value of RXWP.
Figure 111 shows the register hierarchy for generating
USB interrupt events. Each bit in the event register can
be masked with by setting the corresponding bit in the
xxxMSK_REG. A USBFS_IRQ to the CPU is generated
if one or more bits in the MAEV_REG are set and the
corresponding bits in the MAMSK_REG are set to ‘1’.
Bit 7 in the MAMSK_REG is a global interrupt enabled
for the USBFS_IRQ.
If an attempt is made to read more bytes than are actu-
ally available (FIFO underrun), the last byte is read
repeatedly.
RXWP: Receive Write Pointer
This pointer is incremented every time the Endpoint
Controller writes to the receive FIFO. This pointer
wraps around to zero if RFnS is reached.
An overrun condition occurs if RXRP equals RXWP
and an attempt is made to write an additional byte.
RXFL: Receive FIFO Level
This value indicates how many more bytes can be
received until an overrun condition occurs with the next
write to the FIFO.
A FIFO warning is issued if RXFL decreases to a spe-
cific value. The respective WARNn bit in the FWR reg-
ister is set if RXFL is equal to or less than the number
specified by the RFWL bit in the RXCn register.
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USB_IRQ
Interrupt
MAMSK_REG
MAEV
RXMSK_REG
RXEV_REG
TXMSK_REG
TXEV_REG
FWMSK_REG
FWEV_REG
ALTMSK_REG
ALTEV_REG
NAKMSK_REG
NAKEV_REG
EP0_INNAK
EP0_NAK
EP0_OUTNAK
TXS0
TX_DONE
TXC0
TXD0
RXS0
RXC0
RXD0
EPC0
RX_LAST
FIFO0
8 byte
TX_DONE, TX_UDRRN
TXS1-3
TXC1-3
TXD1-3
RXS1-3
RXC1-3
RXD1-3
EPC1,3,5
TXFIFOn
64 byte
TXWARN
RX_ERR, RX_LAST, RX_OVRR
RWWARN
EPC2,4,6
RXFIFOn
64 byte
Figure 111: Interrupt Register hierarchy
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• Selectable 25 k pull-up, pull-down resistors per pin
Bluetooth Low Energy 4.2 SoC
32 Input/Output ports
• Programmable open-drain functionality
The DA14681 has software-configurable I/O pin
assignment, organized into ports Port 0, Port1, Port2
Port 3 and Port 4. Only ports 0, 1 and 2 are available at
the WLCSP package. All ports are available at the
QFN60 package.
• Pull-up to V33 or VDD1V8 (depends on selection)
• Fixed assignment for analog pins ADC[7:0], QSPI
and SDW
• Pins retain their last state when system enters the
Sleep or Deep Sleep mode.
Features
• Port 0: 8 pins, Port 1: 8 pins, Port 2: 5 pins, Port 3: 8
pins, Port 4: 8 pins
• P0_6 is kept powered while in Extended Sleep con-
trolled by Timer1 PWM5 signal
• Fully programmable pin assignment
Px_y
Peripheral X input
Px_DATA_REG (input)
V33 or VDD1V8P
PUPD
PID
Px_MODE_REG
Peripheral X output
Peripheral Y output
Px_y
Px_RESET_DATA_REG
Px_SET_DATA_REG
Px_DATA_REG (output)
VSS
Figure 112: Port P0, P1, P2, P3 and P4 with Programmable Pin Assignment
32.1 PROGRAMMABLE PIN ASSIGNMENT
00 = Input, no resistors selected
01 = Input, pull-up selected
10 = Input, pull-down selected
11 = Output, no resistors selected
The Programmable Pin Assignment (PPA) provides a
multiplexing function to the I/Os of on-chip peripherals.
Any peripheral input or output signal can be freely
mapped to any I/O port bit by setting
Pxy_MODE_REG[4-0].
In output mode and analog mode the pull-up/down
resistors are automatically disabled.
Refer to the Px_MODE_REGs for an overview of the
available PIDs. Analog ADC has fixed pin assignment
in order to limit interference with the digital domain.
The SWD interface (JTAG) is mapped on P0_6 and
P2_4.
32.2 GENERAL PURPOSE PORT REGISTERS
The general purpose ports are selected with PID=0.
The port function is accessible through registers:
• Px_DATA_REG: Port data input/output register
The firmware has the possibility to assign the same
peripheral output to more than one pin. It is the respon-
sibility of the user to make a unique assignment.
• Px_SET_OUTPUT_DATA_REG: Port set output reg-
ister
• Px_RESET_OUTPUT_DATA_REG: Port reset out-
put register
In case more than one input signal is assigned to a
peripheral input, the left most pin in the lowest port pin
number has priority. (e.g P00_MODE_REG has priority
over P01_MODE_REG)
32.2.1 Port Data Register
The registers input Px_DATA_REG and output
Px_DATA_REG are mapped on the same address.
The port direction is controlled by setting:
Pxy_MODE_REG[9:8]
The data input register (Px_DATA_REG) is a read-only
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register that returns the current state on each port pin
even if the output direction is selected, regardless of
the programmed PID, unless the analog function is
selected (in this case it reads 0). The ARM CPU can
read this register at any time even when the pin is con-
figured as an output.
32.4 STATE RETENTION WHILE SLEEPING
Before setting the system to any of the sleep modes,
the state of the pads needs to be retained so that no
external components are affected by GPIOs changing
state when the system goes to sleep, but also to avoid
any floating driving signals from power domains that
are shut off leading to increasing power dissipation.
The data output register (Px_DATA_REG) holds the
data to be driven on the output port pins. In this config-
uration, writing to the register changes the output
value.
The state of the pads is automatically latched by
always-on latches by setting the PAD_LATCH_EN bit
in the SYS_CTRL_REG. This bit will latch all digital
control signals going into the pad as well as the data
output, hence if the pad was set as an output driving
high, it will retain its precise state.
32.2.2 Port Set Data Output Register
Writing an
1 in the set data output register
(Px_SET_DATA_REG) sets the corresponding output
pin. Writing a 0 is ignored.
The signals in red in the following figures are latched:
32.2.3 Port Reset Data Output Register
Writing
a 1 in the reset data output register
VDD
Px_MODE_REG[PUPD]
Input Enable *
(Px_RESET_DATA_REG) resets the corresponding
output pin. Writing a 0 is ignored.
V33
VDD1V8
25k
32.3 FIXED ASSIGNMENT FUNCTIONALITY
VSS
There are certain signals that have a fixed mapping on
specific general purpose IOs. This assignment is illus-
trated in the following table:
VDD
Pullup
Enable *
Open Drain *
Data *
PIN
Output Enable *
Table 54: Fixed Assignment of Specific Signals
VSS
active ESD
Pulldown
Enable *
protection
Analog
ESD
GPIO SWD
QSPI
ADC
PWM
protection
25k
P0_0
QSPI_CL
K
GND
Digital PADs for GPIO w/wo analog
Figure 113: Latching of digital pad signals
P0_1
QSPI_D0
QSPI_D1
QSPI_D2
QSPI_D3
QSPI_CS
P0_2
P0_3
P0_4
P0_5
CLK_AMBA_REG[QSPI_ENABLE] = 1
VDD
VSS
P0_6 SWDIO
ADC_4 PWM5
(only in
VDDIO
Sleep
mode)
P0_7
ADC_3
ADC_5
VDD
P1_0
QSPI_SLEW[1:0] *
Data *
P1_1
PIN
QSPI_DRV[1:0] *
P1_2
ADC_0
ADC_2
ADC_1
ADC_6
P1_3
VSS
active ESD
40k
P1_4
protection
P1_5
GND
P1_6
P1_7
Digital PADs for QSPI
P2_3
Figure 114: Latching of QSPI pad signals
P2_4 SW_CLK
ADC_3
After waking up, the software must ensure disabling of
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the latching by de-asserting the PAD_LATCH_EN bit
so that all pads are accessible and controllable again.
In the case of the QSPI pads, the pad latching will be
overwritten by the QSPI controller as soon as the clock
of the controller is enabled.
32.5 SPECIAL I/O CONSIDERATIONS
There are certain considerations in using the GPIOs as
explained below:
• To use P1_1 or P2_2 in GPIO mode,
USBPAD_REG[USBPAD_EN] must be set. How-
ever, the allowed levels on this pins are 0V and the
voltage on V33 rail. If 1.8V is selected as the pin
supply, then a current of 150 uA is to be expected.
Moreover, these pins should not be used in sleep
modes because the USBPAD_REG will be powered
off (belongs to the peripheral power domain).
• P1_0, P1_5 and P1_7 might affect radio perfor-
mance if toggling while RF activity. It is recom-
mended to use them at low speed and not while
radio is active.
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• Bit stream processing (CRC, Whitening)
33 BLE Core
• FDMA / TDMA / events formatting and synchroniza-
tion
The Bluetooth Low Energy (BLE) core is a qualified
Bluetooth 4.2 baseband controller compatible with
Bluetooth Low Energy specification and it is in charge
of packet encoding/decoding and frame scheduling.
• Frequency Hopping calculation
• Operating clock 16 or 8 MHz.
Features
• Low power modes supporting 32.0 kHz, 32.768 kHz
or 11.7 kHz
• Bluetooth Low Energy compliant according to the
specification of the Bluetooth System, v4.2, Blue-
tooth SIG.
• Supports power down of the baseband during the
protocol’s idle periods.
• Dual Topology
• AHB Slave interface for register file access.
• Low duty cycle advertising
• L2CAP connection oriented channels
• AHB Slave interface for Exchange Memory access
of CPU via BLE core.
• All device classes support (Broadcaster, Central,
Observer, Peripheral)
• AHB Master interface for direct access of BLE core
to Exchange Memory space
• All packet types (Advertising / Data / Control)
• Dedicated Encryption (AES / CCM)
BLE Timer
Registers
AHB
Slave
AHB
Master
Radio
BLE Core
Test MUXes
Bus Interface
Control
BLE_EM
_BASE_
REG
Interrupt
Generator
AES
CCM
Radio
Controller
Frequency
Selection
Memory Controller
Data
Packet
Controller
Event
Controller
White List
Search
Event
Scheduler
Whitening
CRC
Figure 115: BLE Core Block Diagram
33.2.1 Wake up IRQ
33.1 ARCHITECTURE
Once BLE core switches to “BLE Deep Sleep Mode”
the only way to correctly exit from this state is by ini-
tially generating the BLE_WAKEUP_LP_IRQ and con-
secutively the BLE_SLP_IRQ. This sequence must be
followed regardless of the cause of the termination of
the “BLE Deep Sleep Mode”, i.e. either when if the BLE
Timer expired or BLE Timer has been stopped due to
the assertion of BLE_WAKEUP_REQ.
33.1.1 Exchange Memory
The BLE Core requires access to a memory space
named “Exchange Memory” to store control structures
and frame buffers. The access to Exchange Memory is
performed via the AHB Master interface. The base
address of the Exchange Memory is programmable by
means of the BLE_EM_BASE register. The maximum
addressable size of the BLE core is 64 kB.
The
assertion
and
de-assertion
of
BLE_WAKEUP_LP_IRQ is fully controlled via the
33.2 PROGRAMMING
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BLE_ENBPRESET_REG bit fields. Detailed descrip-
tion is following:
BLE_WAKEUP_LP_IRQ (i.e. to call the Arm instruction
WFI). If programmed DEEPSLTIME is less than the
aforementioned minimum value, then
BLE_WAKEUP_LP_IRQ Handler may execute sooner
than the call of Arm WFI instruction for example, caus-
ing SW instability.
TWIRQ_SET: Number of “ble_lp_clk” cycles before the
expiration
of
the
BLE
Timer,
when
the
BLE_WAKEUP_LP_IRQ will be asserted. It is recom-
mended to select a TWIRQ_SET value larger than the
time required for the XTAL16_TRIM_READY_DELAY
event, plus the IRQ Handler execution time. If the pro-
grammed value of TWIRQ_SET is less than the mini-
mum required value, then the actual BLE sleep
duration (refer to BLE_DEEPSLSTAT_REG) will be
larger than the programmed sleep duration (refer to
BLE_DEEPSLWKUP_REG).
33.2.2 Switch from Active Mode to Deep Sleep
Mode
Software can set the BLE core into the “BLE Deep
Sleep Mode”, by first programming the timing of
BLE_WAKEUP_LP_IRQ
generation
in
BLE_ENBPRESET_REG, then program the desired
sleep duration at BLE_DEEPSLWKUP_REG and
TWIRQ_RESET: Number of “ble_lp_clk” cycles before
the expiration of the sleep period, when the
BLE_WAKEUP_LP_IRQ will be de-asserted. It is rec-
ommended to always set to “1”.
finally
set
the
register
bit
BLE_DEEPSLCNTL_REG[DEEP_SLEEP_ON]. The
BLE Core will switch to the “ble_lp_clk” (32.0kHz or
32.768 kHz) in order to maintain its internal 625us tim-
ing reference. Software must poll the state of
TWEXT:
Determines
the
high
period
of
BLE_WAKEUP_LP_IRQ, in the case of an external
BLE_CNTL2_REG[RADIO_PWRDN_ALLOW]
to
wake
up
event
(refer
to
Mini-
detect the completion of this mode transition. Once the
mode transition is completed, SW must disable the
BLE clocks (“ble_master1_clk”, “ble_master2_clk” and
GP_CONTROL_REG[BLE_WAKEUP_REQ]).
mum value is "TWIRQ_RESET + X", where X is the
number of “ble_lp_clk” clock cycles that
“ble_crypt_clk”)
by
setting
to
“0”
the
BLE_WAKEUP_LP_IRQ will be held high. Recom-
mended value is "TWIRQ_RESET + 1". Note that as
soon as GP_CONTROL_REG[BLE_WAKEUP_REQ]
is set to “1” the BLE_WAKEUP_LP_IRQ will be
asserted.
CLK_RADIO_REG[BLE_ENABLE] register bit. Finally,
SW can optionally power down the BLE power domain
by using the PMU_CTRL_REG[RADIO_SLEEP] and
the Peripheral and System power domains as well.
Figure 116 presents the waveforms while entering in
BLE Deep Sleep Mode. In this case, SW, as soon as it
detects that RADIO_PWRDOWN_ALLOW is “1”, it sets
the PMU_CTRL_REG[BLE_SLEEP] to power down
the BLE domain. At the following figures, the corre-
sponding BLE Core signals are marked with red while
BLE domain is in power down state.
Minimum BLE Sleep Duration: The minimum value of
BLE_DEEPSLWKUP_REG[DEEPSLTIME]
time,
measured in “ble_lp_clk” cycles, is the maximum of (a)
“TWIRQ_SET + 1” and (b) the SW execution time from
setting BLE_DEEPSLCNTL_REG[DEEP_SLEEP_ON]
up
to
preparing
CPU
to
accept
the
ble_lp_clk
ble_master1_gclken
ble_master1_clk
tick_625us_p
0
N
deepsltime[31:0] (hld)
deep_sleep_on
radio_pwrdown_allow
deepsldur[31:0]
0
1
2
3
Figure 116: Entering into BLE Deep Sleep Mode
33.2.3 Switch from Deep Sleep Mode to Active
Mode
33.2.4 Switching on at anchor points.
Figure 119 shows a typical deep sleep phase that is
terminated at predetermined time. After a configurable
time before the scheduled wake up time (configured
via BLE_ENBPRESET_REG register bit fields), the
BLE Timer asserts the BLE_WAKEUP_LP_IRQ in
order to wake-up the CPU (powering up the System
Power Domain). The BLE_WAKEUP_LP_IRQ Interrupt
Handler will prepare the code environment and the
There are two possibilities for BLE Core to terminate
the BLE Deep Sleep mode:
1. Termination at the end of a predetermined time.
2. Termination on software wake-up request, due to an
external event.
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detect that BLE Core is powered up. That means that if
Bluetooth Low Energy 4.2 SoC
XTAL
16MHz
stabilization
(refer
to
SYS_STAT_REG[XTAL16_SETTLED]) and will decide
when the BLE Core will be ready to exit from the BLE
Deep Sleep Mode.
the SW requires more time to power up the BLE Core,
then the final sleep duration (provided by
BLE_DEEPSLSTAT_REG) will be larger than the pre-
programmed value.
Once the SW decides that BLE Core can wake up, it
must
enable
the
BLE
clocks
(via
When BLE Timer is expired, BLE clocks are enabled
and BLE Core is powered up, the BLE Core exists the
“BLE Core Deep Sleep mode” and asserts the
BLE_SLP_IRQ.
CLK_RADIO_REG[BLE_ENABLE]) and power up the
BLE
PMU_CTRL_REG[BLE_SLEEP]
SYS_STAT_REG[BLE_IS_UP]).
Power
Domain
(refer
to
and
After the expiration of the sleep period (as specified in
BLE_DEEPSLWKUP_REG[DEEPSLTIME]) the BLE
Timer will not exit the BLE Deep Sleep mode until it will
twirq_reset=1
ble_wakeup_lp_irq
ble_slp_irq
xtal16_settled
ble_enable
rad_is_up
ble_lp_clk
ble_master1_gclken
ble_master1_clk
N
0
N
deepsltime[31:0] (hld)
deepsldur[31:0]
finecnt[9:0]
clk_status
Figure 117: Exit BLE Deep Sleep Mode at predetermined time (zoom in)
twirq_reset=1
ble_wakeup_lp_irq
ble_slp_irq
xtal16_settled
ble_enable
rad_is_up
ble_lp_clk
ble_master1_gclken
ble_master1_clk
deepsltime[31:0] (hld)
deepsldur[31:0]
finecnt[9:0]
N
0
N+5
N
clk_status
Figure 118: Exit BLE Deep Sleep Mode later than the predetermined time (zoom in)
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(N ‐ twirq_set)
ble_wakeup_lp_irq
ble_slp_irq
mirror powerup
down
sys_state
xtal16_settled
ble_enable
rad_is_up
ble_master1_gclken
ble_master1_clk
deepsltime[31:0] (hld)
deepsldur[31:0]
finecnt[9:0]
N
0
N
tick_625us_p
Figure 119: Exit BLE Deep Sleep Mode at predetermined time (zoom out)
33.2.5 Switching on due to an external event.
At Figure 120 the BLE_WAKEUP_REQ has been
asserted by SW as soon as possible, causing
BLE_WAKEUP_LP_IRQ Handler to be executed as
soon as possible. It is also possible to postpone the
assertion of BLE_WAKEUP_REQ to occur after the
detection of XTAL16_TRIM_READY, causing both
BLE_WAKEUP_LP_IRQ and BLE_SLP_IRQ Handlers
to execute sequentially. The decision depends on the
software structure and the application.
Figure 120 shows a wake up from a deep sleep period
forced
by
the
assertion
of
register
bit
GP_CONTROL_REG[BLE_WAKEUP_REQ].
Assume that the system is in Deep Sleep state, i.e. all
Power Domains have been switched off, and both the
Wakeup Timer and Wakeup Controller have been pro-
grammed appropriately. Then assume that an event is
detected at one of the GPIOs. In that case, the SW will
decide to wake-up the BLE core, and will set the
GP_CONTROL_REG[BLE_WAKEUP_REQ] to “1” in
order to force the wake up sequence.
twext=1
down
mirror powerup
sys_state
wakeup_irq
ble_wakeup_req
xtal16_settled
rad_is_up
ble_wakeup_lp_irq
ble_slp_irq
N
0
deepsltime[31:0] (hld)
deepsldur[31:0]
finecnt[9:0]
K<N
tick_625us_p
Figure 120: Exit BLE Deep Sleep Mode due to external event
As soon as bit field BLE_WAKEUP_REQ is set to “1”
the BLE_WAKEUP_LP_IRQ will be asserted. In that
case, the high period of BLE_WAKEUP_LP_IRQ is
controlled via TWEXT. The recommended value of
BLE_WAKEUP_REQ event can be disabled by setting
BLE_DEEPSLCNTL_REG[EXTWKUPDSB].
33.3 DIAGNOSTIC SIGNALS
TWEXT is "TWIRQ_RESET
BLE_WAKEUP_LP_IRQ will remain high for one
“ble_lp_clk” period.
+ 1", meaning that
The BLE core provides several internal signals that can
be mapped out on GPIOs to provide more insight on
the real time operation. They can also be used for con-
trolling external Front End Modules (FEMs) (e.g. as
explained in Figure 127. These signals are named as
As long as the BLE_WAKEUP_REQ is high, entering
the sleep mode is prohibited. Please note that
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BLE diagnostics (ble_diagx).
Table 55: BLE diagnostics mapping on GPIOs
BLE Diagnostics Port GPIO port
There are 8 fixed ports that can be assigned BLE diag-
nostic signals as presented in Table 55:
ble_diag6
ble_diag7
P1_3
P2_3
Table 55: BLE diagnostics mapping on GPIOs
BLE Diagnostics Port GPIO port
There are 3 different configuration schemes which
allow for specific internal signals to be mapped on the
BLE Diagnostics Port. These are configured by pro-
gramming the BLE_DIAGCNTLx_REG registers with
specific values. The assignment of the internal signals
on the diagnostic port depending on the configuration
is presented in Table 56:
ble_diag0
ble_diag1
ble_diag2
ble_diag3
ble_diag4
ble_diag5
P2_0
P2_1
P2_2
P1_0
P1_1
P1_2
Table 56: BLE diagnostic signals per configuration
Diagnostics
Registers value
BLE signal
Description
Port
BLE_DIAGCNTL_REG
= 0x83838383
BLE_DIAGCNTL2_REG
= 0x83838383
BLE_DIAGCNTL3_REG
= 0x76543210
ble_diag0
ble_diag1
ble_diag2
radcntl_txen
radcntl_rxen
sync_window
Radio controller Tx enable signal
Radio controller Rx enable signal
Defines the correlation window for the access address.
See timing in Figure 121
ble_diag3
ble_diag4
ble_diag5
ble_diag6
ble_diag7
sync_found_pulse Access address detection pulse. Will be generated only
if correlation is successful. See timing in Figure 121
event_in_process Indicates that an BLE event is currently in process. See
timing in Figure 127
ble_event_irq
A pulse designating the end of Advertising/Scanning/
Connection events
ble_rx_irq
A pulse designating that a packet is received depend-
ing on the configuration
ble_error_irq
A pulse indicating that the BLE core and the CPU are
trying to access the same memory space at the same
time
BLE_DIAGCNTL_REG
= 0x92929292
BLE_DIAGCNTL2_REG
= 0x92929292
BLE_DIAGCNTL3_REG
= 0x76543210
ble_diag0
ble_diag1
ble_diag2
rx_data
BLE packet controller RX data bit
rx_data_en
rx_data_core
BLE packet controller RX data bit qualifier
BLE bit streaming RX data bit. Bit streaming engine
consists of CRC and Whitening
ble_diag3
ble_diag4
ble_diag5
ble_diag6
ble_diag7
rx_data_core_en
tx_data
BLE bit streaming RX data bit qualifier
BLE packet controller TX data bit
BLE packet controller TX data bit qualifier
BLE bit streaming TX data bit.
tx_data_en
tx_data_core
tx_data_core_en
BLE bit streaming TX data bit qualifier
The sync_window and sync_found_pulse timing is pre-
sented in Figure 121:
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Figure 121: Diagnostics signals timing during correlation
33.4.1 Advertising Event
33.4 POWER PROFILE
This section presents the current profile of the
DA14681 when operating in the respective protocol
mode as described in the following sections.
The current profile of a Bluetooth Advertising event is
presented in Figure 122:
A B C
D E
F
GHK
Figure 122: BLE Advertising power profile
The current profile figure is divided into sections which
represent different operations within the DA14681
SoC. They are presented and explained in Table 57:
Table 57: BLE Advertising profile breakdown
Section Description Time (s)
C
D
XTAL16M settling time
1400
2600
Switched to XTAL16, BLE
core is enabled
Table 57: BLE Advertising profile breakdown
E
F
WFI until the Radio starts
250
Section Description
Time (s)
500
Radio activity (TX/RX) on
3800
A
B
Startup process
1
channels 37, 38 and 39
XTAL16M initial time
1000
G
BLE core sleep preparation 400
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(cached mode). The Advertising interval is 600 ms.
Bluetooth Low Energy 4.2 SoC
Table 57: BLE Advertising profile breakdown
Note, that overall time might vary depending on the
protocol’s parameters.
Section Description
Time (s)
H
K
OS sleep preparation
Goto sleep process
350
400
33.4.2 Connection Event
The current profile of a Bluetooth Connection event is
presented in Figure 123:
1 Time between RX/TX on successive channels is 1.5 ms
The overall charge required for this operation at 3V is
20 uC while executing code from FLASH and ROM
A B
C
D
E F G H K
Figure 123: BLE Connection power profile
The current profile figure is divided into sections which
represent different operations within the DA14681
SoC. They are presented and explained in Table 58:
protocol’s parameters.
Table 58: BLE Connection profile breakdown
Section Description
Time (s)
500
A
B
C
D
Startup process
XTAL16M initial time
XTAL16M settling time
1300
1150
Switched to XTAL16, BLE
core is enabled
2600
E
F
WFI until the Radio starts
Radio activity (RX, TX)
450
500
G
H
K
BLE core sleep preparation 400
OS sleep preparation
Goto sleep process
350
400
The overall charge required for this operation at 3V is
10.6 uC while executing code from FLASH and ROM
(cached mode). The Connection interval is 30 ms.
Note, that overall time might vary depending on the
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Features
34 CoEx Interface
• 2.4 GHz Radio activity indication
• Priority indication
The DA14681 implements a coexistence interface for
signalling radio activity to external 2.4 GHz co-located
devices. A three wire interface is delivering information
on the priority and the RF transmit/receive events.
• Sensing of external module RF activity
• Supports up to 2 external 2.4 GHz devices
The CoEx interface and its connection to the rest of the
system is displayed in Figure 124.
ble_sync_found_p
ble_rx_data
DEM
ble_rssi0
ble_rssi1
BLE Core
(Link Layer)
ble_freq_word
ble_tx_data
PLLDIG
ble_tx_data_en
EXT_ACT0
2.4 GHz
Ext Device
SMART_ACT
GPIO
Mux
SMART_ACT
SMART_PRI
radio_busy
tx_en
rx_en
ble_plldig_en
ble_dem_en
SMART_PRI
EXT_ACT1
2.4 GHz
Ext Device
RFCU
COEX
EXT_ACT
RADIO
Figure 124: Coexistence interface
34.1 ARCHITECTURE
Furthermore, as depicted in Figure 34, the CoEx block
is clocked by the same clock as the Digital PHY does.
Hence the CLK_RADIO_REG[RFCU_EN] bit has to be
asserted before programming the block’s registers.
The coexistence external interface contains three sig-
nals, namely:
1. EXT_ACT0, EXT_ACT1: this is an input to the
DA14681 and when asserted, it designates that
an external 2.4GHz device is about to issue RF
activity.
Any GPIO can be selected to to act as EXT_ACT0 or
EXT_ACT1,
by
just
programming
the
Pxy_MODE_REG[PID]=48/49 (COEX_EXT_ACT0 or
COEX_EXT_ACT1), hence two external devices can
be supported with the same priority. The behaviour of
the SMART_ACT (Pxy_MODE_REG[PID]=50) and
SMART_PRI (Pxy_MODE_REG[PID]=51) output sig-
nals is configurable by means of COEX_CTRL_REG
and COEX_PRIx_REG registers. The SMART_ACT
line will always be asserted if the DA14681 is about to
2. SMART_ACT: this is an output from the
DA14681 and when asserted it designates that
the DA14681 is transmitting or receiving hence
an external device should be aware of the radio
activity. The exact timing of the assertion of this
signal is depicted in Figure 125.
start
RF
activity
if
3. SMART_PRI: this signal is communicating
whether the DA14681 has priority over the exter-
nal devices or not. If asserted, then the external
devices could adjust their RF activity accord-
ingly.
COEX_CTRL_REG[SMART_ACT_IMPL]=0. On the
contrary, if COEX_CTRL_REG[SMART_ACT_IMPL]=1
then it is asserted only if DA14681 has higher priority
than the external devices as programmed in
COEX_PRIx_REG[COEX_PRI_MAC]. if not, then both
SMART_ACT and SMART_PRI will be de-asserted as
long as the EXT_ACT is high disabling the DA14681
RF activity to avoid collisions with the external device.
34.2 PROGRAMMING
The CoEx block is in the same power domain as the
Radio, namely PD_RAD. Hence, the power domain
has to be enabled prior to programming the registers.
An overview of the aforementioned scenarios is pre-
sented in Figure 125.
This
can
be
done
with
PMU_CTRL_REG[PERIPH_SLEEP]=0.
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TXWWRUP
RF BLE
BLE_TX_EN
(MAC output)
RXWWRUP
RF BLE
BLE_RX_EN
(MAC output)
prefetch_time
EVENT_IN_PROCESS
(MAC output)
EXT_ACT
SMART_ACT
(SMART_ACT_IMPL=0)
SMART_PRI
(COEX_PRI1_REG=BLE)
SMART_PRI
(COEX_PRI1_REG=EXT)
SMART_ACT
(SMART_ACT_IMPL=1
COEX_PRI1_REG=BLE)
SMART_PRI
(COEX_PRI1_REG=BLE)
SMART_ACT
(SMART_ACT_IMPL=1
COEX_PRI1_REG=EXT)
SMART_PRI
(COEX_PRI1_REG=EXT)
Figure 125: Coexistence signalling cases
Case 3:
Case 1:
Assuming COEX_CTRL_REG[SMART_ACT_IMPL]=0,
the SMART_ACT signal will be asserted with the
event_in_process BLE MAC signal which is an enve-
lope of an RX and TX event. It will be de-asserted after
the de-assertion of the event_in_process and as soon
as the latest BLE activity is completed designated by
an internal signal. SMART_PRI notifies whether the
BLE has higher priority or not, hence if
COEX_PRI1_REG[COEX_PRI_MAC]=BLE then it fol-
In this case the external device has higher priority due
to the COEX_PRI1_REG[COEX_PRI_MAC]=EXT.
Thus, the SMART_ACT will not be asserted if an exter-
nal device signals RF activity via EXT_ACT.
SMART_PRI will be also be low as long as EXT_ACT
is high.
lows
the
SMART_ACT
waveform.
If
COEX_PRI1_REG[COEX_PRI_MAC]=EXT then it will
be de-asserted whenever the external device notifies
its RF activity via EXT_ACT.
Case 2:
Assuming COEX_CTRL_REG[SMART_ACT_IMPL]=1,
the SMART_ACT will be asserted only if BLE has prior-
ity over the external devices and not always. In this
case, the COEX_PRI1_REG[COEX_PRI_MAC]=BLE
grants priority to the BLE hence the SMART_ACT and
SMART_PRI are asserted at the same time.
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Features
35 Radio
• Single ended RFIO interface, 50 matched
• Alignment free operation
The Radio Transceiver implements the RF part of the
DA14681. It provides a 93dB RF link budget for reliable
wireless communications.
• -94.5 dBm receiver sensitivity
• 0 dBm transmit output power
• Ultra low power consumption
• Fast frequency tuning minimises overhead
All RF blocks are supplied by on-chip low-drop out-reg-
ulators (LDOs). The bias scheme is programmable per
block and optimized for minimum power consumption.
The radio block diagram is given in Figure 126. It com-
prises the Receiver, Transmitter, Synthesizer, Rx/Tx
combiner block, and Biassing LDOs.
Qoffset
DAC
RX_MIX
RF_TXRX
Demodulator
IFQout
IFQin
Qin
TIA
+
+
LNA
ADC
R
F
I
O
IFIout
IFIin
TIA
Iin
ADC
PA
Ioffset
DAC
RXIF
AGCcntrl
Modulator
rxloI
RADIO680
txloQ
rxloQ
PLL680
CP
LDOs /
Bias
vco
LF
f/2
DAC
PFD
MD
SYNTH‐CTRL
Test‐Mux
DIG_2_Radio
fref
divmod
Interface
Xtal
oscillator
RFCU
Figure 126: Radio Block Diagram
output signal. The VCO runs at twice the required fre-
35.1 ARCHITECTURE
35.1.1 Receiver
quency and a dedicated divide-by-2 circuit generates
the 2.4 GHz signals in the required phase relations. Its
frequency is controlled by a classic 3rd order type II
PLL with a passive loop filter, operated in fractional-N
mode. The reference frequency is the 16 MHz crystal
clock. The multi-modulus divider has a nominal divide
ratio of 153 which is varied by a modulator. The
modulation of the TX frequency is performed by 2-point
modulation. The fractional divide ratio also contains the
shaped TX data stream. A second modulation path
feeds the TX data stream directly to the VCO. The lat-
ter path is automatically calibrated from time to time to
align the low and high frequency parts of the 2-point
modulation scheme.
The RX frontend consists of a selective matching net-
work, a low noise amplifier (LNA) and an image rejec-
tion down conversion mixer. The LNA gain is controlled
by the AGC.
The intermediate frequency (IF) part of the receiver
comprises a complex filter and 2 variable gain amplifi-
ers. This provides the necessary signal conditioning
prior to digitalization. The digital demodulator block
(DEM) provides a synchronous bit stream.
35.1.2 Synthesizer
The RF Synthesizer generates the quadrature LO sig-
nal for the mixer, but also generates the modulated TX
35.1.3 Transmitter
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The RF power amplifier (RFPA) is an extremely effi-
cient Class-D structure, providing typically 0 dBm to the
antenna. It is fed by the VCO’s divide-by-2 circuit and
delivers its TX power to the antenna pin through the
combined RX/TX matching circuit.
35.1.6 Control
The radio control unit (RFCU), controls the block timing
and configuration registers. The BLE interfaces directly
with the RFCU. The DA14681 can be put in test mode
using
a
standard
Bluetooth
tester
(e.g.
Rohde & Schwarz CBT with K57 option) by connecting
the antenna terminal for the RF link and the UART as
described in section 23.7.
35.1.4 RFIO
The RX/TX combiner block is a unique feature of the
DA14681. It makes sure that the received power is
applied to the LNA with minimum losses towards the
RFPA. In TX mode, the LNA poses a minimal load for
the RFPA and its input pins are protected from the
RFPA. In both modes, the single ended RFIO port is
matched to 50 , in order to provide the simplest possi-
ble interfacing to the antenna on the printed circuit
board.
35.2 DYNAMIC CONTROLLED FUNCTIONS
The RF control unit (RFCU) provides the capability of
controlling 5 signals which can be used for controlling a
Front End Module or an external Power Amplifier. The
timing granularity of the DCF signals is 1 us. The DCFs
can be output on any GPIO using PID numbers 55 to
59.
The programming of the DCF signals are with respect
to the rising and falling edges of the TX_EN or RX_EN
signals from the BLE MAC, as depicted in Figure 127:
35.1.5 Biassing
All RF blocks are supplied by on-chip low-drop out-reg-
ulators (LDOs). The bias scheme is programmable per
block and optimized for minimum power consumption.
Programmable through
RF_CNTRL_TIMER_x_REG[RESET_O
FFSET]
1us granularity, up to 256us
Counts fromTX/RX_EN neg edge
Programmable through
Programmable through
Programmable through
RF_CNTRL_TIMER_x_REG[SET_OFF
SET]
1us granularity, up to 256us
Counts from TX/RX_EN pos edge
BLE_RADIOPWRUPDN_REG[RXPWRUP]
1us granularity, up to 256us
There is a minimum value
(Preferred Settings)
BLE_RADIOPWRUPDN_REG[TXPWRUP]
1us granularity, up to 256us
There is a minimum value
(Preferred Settings)
RF BLE
BLE_TX_EN
(MAC out)
RF BLE
BLE_RX_EN
(MAC out)
DCFs (27‐31)
(RFCU out)
This signal is asserted when TX/RX_EN is high and
deasserted when RX/TX_EN is low
BLE_IN_PROCESS
(MAC diagnostics out)
EVENT_IN_PROCESS
(MAC diagnostics out)
Programmable through
BLE_TIMGENCNTL_REG[prefetch_time]
1us granularity, up to 256us
Time before the TX/RX_EN posedge. This signal envelops RX/
TX activity
Figure 127: DCF signals programming
35.3 DIAGNOSTIC SIGNALS
There are diagnostic signals that can trigger the
rf_diag_irq interrupt line. There are 2 signals from the
BLE MAC and 2 signals from the Radio that can actu-
ally be programmed to act as this interrupt line
Table 59: RF_DIAG_IRQ source selection
Word Sel
WSELx= 0 or 1
WSELx= 2 or 3
Bit Sel
sources.
They
are
controlled
by
the
RF_DIAGIRQ01_REG and RF_DIAGIRQ23_REG reg-
isters. The overview of the options is provided in Table
59:
BSELx=7
BSELx=6
BSELx=5
BSELx=4
ble_diag7
ble_diag6
ble_diag5
ble_diag4
TX_EN
RX_EN
DCF26
DCF25
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Table 59: RF_DIAG_IRQ source selection
Word Sel
Bit Sel
WSELx= 0 or 1
WSELx= 2 or 3
BSELx=3
BSELx=2
BSELx=1
BSELx=0
ble_diag3
ble_diag2
ble_diag1
ble_diag0
DCF24
DCF23
DCF22
DCF21
There are 4 different selections in these 2 registers
namely DIAGIRQ_WSEL_0 to DIAGIRQ_WSEL_3
(designated as WSELx in Table 59) and
DIAGIRQ_BSEL_0 to DIAGIRQ_BSEL_3 (designated
as BSELx in Table 59). They are identical allowing for
different signals combinations for the interrupt genera-
tion.
The exact definition of the ble_diagx signals are
described in Table 56.
The DCF21 to DCF26 signals are programmable tim-
ers as explained in the previous section and are used
to trigger events in the Radio circuitry.
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36 Memory map
This section contains a detailed view of the DA14681 memory map.
Table 60: Memory Map
Address
0x0
Description
Remapped Device
ROM
Power Domain
AMBA
0x7F00000
0x7F40000
0x7F80000
0x7FC0000
0x7FE0000
0x8000000
0xC000000
0xC0FFFFF
0x40000000
0x40020000
0x40030000
0x40040000
0x40060000
0x400A0000
0x400B0000
0x400C3000
0x40098000
0x50000000
0x50000100
0x50000200
0x50000300
0x50001000
0x50001100
0x50001200
0x50001300
0x50001400
0x50001500
0x50001600
0x50001700
0x50001800
0x50001900
0x50001A00
0x50001B00
0x50001C00
0x50001C4A
0x50002000
0x50002D00
0x50002E00
0x50002F00
SYS_PD
SYS_PD
SYS_PD
SYS_PD
SYS_PD
SYS_PD
SYS_PD
AHB
AHB
AHB
AHB
AHB
AHB
AHB
OTPC
OTP
DataRAM
CacheRAM
QSPI FLASH
QSPIC
Reserved
BLEC
AES-HASH
ECC_M
BLE_PD
SYS_PD
SYS_PD
SYS_PD
AHB
AHB
AHB
AHB
TRNG_M
Reserved
CACHE_MTR
CACHE_MDR
CACHEC_MRM
SYS_PD
SYS_PD
SYS_PD
AHB
AHB
AHB
Reserved
CRG
WKUPC
TIM1
AON_PD
AON_PD
AON_PD
APB16
APB16
APB16
Reserved
UART
UART2
SPI
PER_PD
PER_PD
PER_PD
PER_PD
PER_PD
PER_PD
PER_PD
PER_PD
PER_PD
PER_PD
PER_PD
PER_PD
PER_PD
APB16
APB16
APB16
APB16
APB16
APB16
APB16
APB16
APB16
APB16
APB16
APB16
APB16
SPI2
I2C
I2C2
KEYSC
IR
USB
ADC
QDEC
ANAMISC
CRG_PERIPH
Reserved
RFCU
PLLDIG
DEMOD
COEX
RAD_PD
RAD_PD
RAD_PD
RAD_PD
APB16
APB16
APB16
APB16
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Table 60: Memory Map
Address
Description
Power Domain
SYS_PD
SYS_PD
SYS_PD
SYS_PD
SYS_PD
SYS_PD
SYS_PD
PER_PD
SYS_PD
RAD_PD
AMBA
APB16
APB16
APB16
APB16
APB16
APB16
APB16
APB32
APB32
APB16
0x50003000
0x50003100
0x50003200
0x50003300
0x50003400
0x50003500
0x50003600
0x50004000
0x50005000
0x50006000
0x50006100
0xE0000000
GPIOMUX
WDOGTIM
VERSION
GPREG
TIM0/2
DMA
RFPT
APU
TRNG
ECC
Reserved
SYS_PD
Arm Internal Bus
Note: AHB implies a full 32-bit aligned address space
and a 32 bit data bus. APB16 implies a 16-bit aligned
address space and 16-bit data bus. APB32 implies a
32-bit aligned address space and a 32-bit data bus.
Byte accesses on either APB16 or APB32 are not
allowed.
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37 Registers
This section contains a detailed view of the DA14681 registers. It also describes the bitfields in certain registers that
will retain their value even if the power domain they reside in is shut off.
Table 61: Retention Registers
Register
Bit field
Table 61: Retention Registers
QSPIC_CTRLMODE QSPIC_AUTO_MD
Register
Bit field
_REG
QSPIC_CLK_MD
BLE_CNTL2_REG
EMACCERRSTAT
EMACCERRACK
EMACCERRMSK
BLE_DIAG_OVRWR_7_5
BLE_CLK_STAT
MON_LP_CLK
QSPIC_IO2_OEN
QSPIC_IO3_OEN
QSPIC_IO2_DAT
QSPIC_IO3_DAT
QSPIC_HRDY_MD
QSPIC_RXD_NEG
QSPIC_RPIPE_EN
QSPIC_PCLK_MD
RADIO_PWRDN_ALLOW
BLE_CLK_SEL
BB_ONLY
QSPIC_FORCENSEQ_EN
SW_RPL_SPI
QSPIC_USE_32BA
WAKEUPLPSTAT
BLE_RSSI_SEL
BLE_EM_BASE_10_16
QSPIC_ERASECMD QSPIC_ERS_INST
A_REG
QSPIC_WEN_INST
BLE_EM_BASE_RE
G
QSPIC_SUS_INST
QSPIC_RES_INST
QSPIC_BURSTBRK_ QSPIC_BRK_WRD
REG
QSPIC_ERASECMD QSPIC_ERS_TX_MD
QSPIC_BRK_EN
B_REG
QSPIC_WEN_TX_MD
QSPIC_BRK_SZ
QSPIC_BRK_TX_MD
QSPIC_SUS_TX_MD
QSPIC_RES_TX_MD
QSPIC_EAD_TX_MD
QSPIC_ERS_CS_HI
QSPIC_ERSRES_HLD
QSPIC_RESSUS_DLY
QSPIC_SEC_HF_DS
QSPIC_BURSTCMD QSPIC_INST
A_REG
QSPIC_INST_WB
QSPIC_EXT_BYTE
QSPIC_INST_TX_MD
QSPIC_GP_REG
QSPIC_PADS_DRV
QSPIC_PADS_SLEW
QSPIC_ADR_TX_MD
QSPIC_EXT_TX_MD
QSPIC_STATUSCMD QSPIC_RSTAT_INST
QSPIC_DMY_TX_MD
_REG
QSPIC_RSTAT_TX_MD
QSPIC_BURSTCMD QSPIC_DAT_RX_MD
B_REG
QSPIC_RSTAT_RX_MD
QSPIC_BUSY_POS
QSPIC_BUSY_VAL
QSPIC_EXT_BYTE_EN
QSPIC_EXT_HF_DS
QSPIC_DMY_NUM
QSPIC_INST_MD
QSPIC_RESSTS_DLY
QSPIC_STSDLY_SEL
QSPIC_WRAP_MD
QSPIC_WRAP_LEN
QSPIC_WRAP_SIZE
QSPIC_CS_HIGH_MIN
QSPIC_DMY_FORCE
QSPIC_UCODE_STA QSPIC_UCODE_X
RT
CACHE_ASSOCCFG CACHE_ASSOC
_REG
CACHE_CTRL1_RE
G
CACHE_FLUSH
CACHE_RES1
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Table 61: Retention Registers
1 : Cache registers are only retained if
PMU_CTRL_REG[RETAIN_CACHE=1]
Register
Bit field
CACHE_CTRL2_RE
CACHE_LEN
CACHE_WEN
CACHE_CGEN
1
G
ENABLE_ALSO_OTP_CAC
HED
ENABLE_ALSO_QSPIFLAS
H_CACHED
CACHE_CTRL3_RE
G
CACHE_ASSOCIATIVITY_
RESET_VALUE
CACHE_LINE_SIZE_RESE
T_VALUE
CACHE_RAM_SIZE_RESE
T_VALUE
CACHE_CONTROLLER_R
ESET
CACHE_LNSIZECFG CACHE_LINE
_REG
CACHE_MRM_CTRL MRM_START
_REG
MRM_IRQ_MASK
MRM_IRQ_TINT_STATUS
MRM_IRQ_THRES_STATU
S
CACHE_MRM_HITS MRM_HITS
_REG
CACHE_MRM_MISS MRM_MISSES
ES_REG
CACHE_MRM_THRE MRM_THRES
S_REG
CACHE_MRM_TINT_ MRM_TINT
REG
SWD_RESET_REG
OTPC_MODE_REG
SWD_HW_RESET_REQ
OTPC_MODE_MODE
OTPC_NWORDS
OTPC_NWORDS_R
EG
OTPC_TIM1_REG
OTPC_TIM1_CC_T_CADX
OTPC_TIM1_CC_T_PW
OTPC_TIM1_CC_T_1US
OTPC_TIM1_CC_T_500NS
OTPC_TIM1_CC_T_200NS
OTPC_TIM1_CC_T_25NS
OTPC_TIM2_REG
DEBUG_REG
OTPC_TIM2_CC_STBY_TH
R
OTPC_TIM2_CC_T_BCHK
OTPC_TIM2_RDENL_PRO
T
DEBUGS_FREEZE_EN
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37.1 OTPC REGISTER FILE
Table 62: Register map OTPC
Address
Port
Description
0x07F40000
0x07F40004
0x07F40008
0x07F4000C
0x07F40010
0x07F40014
0x07F40018
0x07F4001C
OTPC_MODE_REG
OTPC_PCTRL_REG
OTPC_STAT_REG
OTPC_AHBADR_REG
OTPC_CELADR_REG
OTPC_NWORDS_REG
OTPC_FFPRT_REG
OTPC_FFRD_REG
Mode register
Bit-programming control register
Status register
AHB master start address
Macrocell start address
Number of words
Ports access to fifo logic
The data which have taken with the latest read from
the OTPC_FFPRT_REG
0x07F40020
0x07F40024
OTPC_PWORDL_REG
OTPC_PWORDH_REG
The 32 lower bits of the 64-bit word that will be pro-
grammed, when the MPROG mode is used.
The 32 higher bits of the 64-bit word that will be pro-
grammed, when the MPROG mode is used.
0x07F40028
0x07F4002C
OTPC_TIM1_REG
OTPC_TIM2_REG
Various timing parameters of the OTP cell.
Various timing parameters of the OTP cell.
Table 63: OTPC_MODE_REG (0x07F40000)
Bit
Mode Symbol
Description
Reserved
Reserved
Reserved
Reset
0x0
31:30
29:28
27:10
9
-
-
-
-
-
0x0
-
0x0
R/W
OTPC_MODE_RLD_
RR_REQ
Write with 1 in order to be requested the reloading of the
repair records. The reloading of the repair records will be
performed at the next enabling of the OTP cell. That means
that first the controller should be configured to the STBY
mode and after should be activated any other mode. The
hardware will clear this register, when the reloading will be
performed.
0x0
The reloading has meaning only if the repair records have
been updated manually (MPROG mode).
8
7
R/W
OTPC_MODE_USE_
SP_ROWS
Selects the memory area of the OTP cell that will be used.
0 - Uses the normal memory area of the OTP cell
1 - Uses the spare rows of the OTP cell
This selection has meaning only if the mode of the controller
is not TDEC and TWR. The controller should be in STBY
mode, in order to takes into account this bit. The selection
will take effect at the next mode that will be enabled.
0x0
0x0
-
-
Reserved
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Table 63: OTPC_MODE_REG (0x07F40000)
Bit
Mode Symbol
Description
Reset
6
R/W
OTPC_MODE_ERR_ When is performed a read from the OTP memory in the
0x0
RESP_DIS
MREAD mode, a double error is likely be detected during the
retrieving of the data from the OTP. This error condition is
always indicated in the status bit
OTPC_STAT_REG[OTPC_STAT_RERROR]. However, the
OTP controller has also the ability to indicates this error con-
dition, by generating an ERROR response in the AHB bus.
The generation of the ERROR response can be avoided with
the help of this configuration bit.
0 - The OTP controller generates an ERROR response in the
AHB bus, when a double error is detected during a reading
in MREAD mode. The
OTPC_STAT_REG[OTPC_STAT_RERROR] is also
updated. The receiving of an ERROR response by the CPU
causes a Hard Fault exception in the CPU.
1 - Only the OTPC_STAT_REG[OTPC_STAT_RERROR] is
updated in a case of such error. The OTP controller will not
generate an ERROR response in the AHB bus.
5
4
R/W
R/W
OTPC_MODE_FIFO
_FLUSH
By writing with 1, removes any content from the fifo. This bit
returns automatically to value 0.
0x0
0x0
OTPC_MODE_USE_
DMA
Selects the use of the dma, when the controller is configured
in one of the modes: AREAD or APROG.
0 - The dma is not used. The data should be transferred
from/to controller through the register OTPC_FFPRT_REG.
1 - The dma is used. The data transfers from/to controller are
performed automatically, with the help of the internal DMA of
the OTP controller. The AHB base address should be config-
ured in register OTPC_AHBADR_REG, before the selection
of one of the two modes: AREAD or APROG.
3
-
-
Reserved
0x0
0x0
2:0
R/W
OTPC_MODE_MOD
E
Defines the mode of operation of the OTPC controller. The
encoding of the modes is as follows:
000 - STBY mode
001 - MREAD mode
010 - MPROG mode
011 - AREAD mode
100 - APROG mode
101 - TBLANK mode
110 - TDEC mode
111 - TWR mode
Table 64: OTPC_PCTRL_REG (0x07F40004)
Bit
Mode Symbol
Description
Reset
0x0
31:16
15
-
-
Reserved
R/W
OTPC_PCTRL_PST
ART
Write with '1' to trigger the programming of one OTP word, in
the case where the MPROG mode is selected. The bit is
cleared automatically. The 64-bits that will be programmed
into the OTP memory are contained into the two registers
OTPC_PWORDx_REG.
0x0
This bit should be used when a new programming is initi-
ated, but also when the programming must be retried.
The OTPC_PCTRL_WADDR defines the OTP position
where will be performed the programming.
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Table 64: OTPC_PCTRL_REG (0x07F40004)
Bit
Mode Symbol
Description
Reset
14
R/W
OTPC_PCTRL_PRE
TRY
It distinguishes the first attempt of a programming of an OTP
position, from a retry of programming.
0x0
0 - A new value will be programmed in a blank OTP position.
The hardware will try to write all the bits that are equal to '1'.
1 - The programming that is applied is not the first attempt,
but is a request for reprogramming. Will be processed only
the bits that were failed to be programmed during the previ-
ous attempt. The hardware knows the bits that were failed
during the previous attempt.
The registers OTPC_PWORDx_REG should contain the 64
bits of the value that should be programmed, independent of
the value of the OTPC_PCTRL_PRETRY bit.
Also, the OTPC_PCTRL_WADDR should contain always the
required OTP address.
A retry of a programming should be requested only if the pre-
vious action was the first attempt of programming or a retry
of programming. Should not be requested a retry if the first
attempt has not been performed.
13
-
-
Reserved
0x0
0x0
12:0
R/W
OTPC_PCTRL_WAD
DR
Defines the OTP position where will be programmed the 64-
bits that are contained into the registers
OTPC_PWORDx_REG. It points to a physical 72 bits OTP
word.
Table 65: OTPC_STAT_REG (0x07F40008)
Bit
Mode Symbol
Description
Reset
0x0
31:30
29:16
-
-
Reserved
R
OTPC_STAT_NWOR
DS
It contains the "live" value of the number of (32 bits) words
that remain to be processed by the controller.
0x0
15:12
11:8
-
-
Reserved
0x0
0x0
R
OTPC_STAT_FWOR
DS
Indicates the number of words which contained in the fifo of
the controller.
7
6
5
R0/
WC
OTPC_STAT_RERR
OR
Indicates that during a normal reading (MREAD or AREAD)
was reported a double error by the SECDED logic. That
means that the data are corrupted.
0 - The read data are considered as correct.
1- The SECDED logic detects a double error.
This bit can be cleared only with a write with '1'.
0x0
0x1
0x0
R
R
OTPC_STAT_ARDY
Should be used to monitor the progress of the AREAD and
APROG modes.
0 - One of the APROG or AREAD mode is selected. The
controller is busy.
1 - The controller is not in an active AREAD or APROG
mode.
OTPC_STAT_TERR
OR
Indicates the result of a test sequence. Should be checked
after the end of a TBLANK, TDEC and TWR mode
(OTPC_STAT_TRDY = 1).
0 - The test sequence ends with no error.
1 - The test sequence has failed.
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Table 65: OTPC_STAT_REG (0x07F40008)
Bit
Mode Symbol
Description
Reset
4
R
OTPC_STAT_TRDY
Indicates the state of a test mode. Should be used to monitor
the progress of the TBLANK, TDEC and TWR modes.
0 - The controller is busy. One of the test modes is in pro-
gress.
0x1
1 - There is no active test mode.
3
R
OTPC_STAT_PZER
O
Indicates that the programming sequence has been avoided
during a programming request, due to that the word that
should be programmed is equal to zero.
0x0
0 - At least one bit has been programmed into the OTP.
1 - The programming has not been performed. All the bits of
the word that should be programmed are equal to zero.
When the controller is in MPROG mode, this bit can be
checked after the end of the programming process
(OTPC_STAT_PRDY = 1).
During APROG mode, the value of this field it is normal to
changing periodically. After the end of the APROG mode
(OTPC_STAT_ARDY = 1), this field indicates that one or
more of words that have been processed are equal to zero.
2
R
OTPC_STAT_PERR_ Indicates that a correctable error has been occurred during
0x0
COR
the word programming process.
0 - There is no correctable error in the word-programming
process.
1 - The process of word - programming reported a correcta-
ble error.
The correctable error occurs when exactly one bit in an OTP
position cannot take the required value. This is not a critical
failure in the programming process. The data can still be
retrieved correctly by the OTP memory, due to that the error
correcting algorithm can repair the corrupted bit.
When the controller is in MPROG mode, this bit can be
checked after the end of the programming process
(OTPC_STAT_PRDY = 1).
During APROG mode, the value of this field it is normal to
changing periodically. After the end of the APROG mode
(OTPC_STAT_ARDY = 1), this field indicates that one or
more words had a correctable error.
1
R
OTPC_STAT_PERR_ Indicates that an uncorrectable error has been occurred dur- 0x0
UNC
ing the word programming process.
0 - There is no uncorrectable error in the word-programming
process.
1 - The process of word-programming failed due to an uncor-
rectable error.
An uncorrectable error is considered when two or more of
the bits in an OTP position cannot take the required values.
This is a critical failure in the programming process, which
means that the data cannot corrected by the single error cor-
recting algorithm.
When the controller is in MPROG mode, this bit should be
checked after the end of the programming process
(OTPC_STAT_PRDY = 1).
During APROG mode, the value of this field it is normal to
changing periodically. After the end of the APROG mode
(OTPC_STAT_ARDY = 1), this field indicates if the program-
ming was failed or ended successfully.
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Table 65: OTPC_STAT_REG (0x07F40008)
Bit
Mode Symbol
OTPC_STAT_PRDY
Description
Reset
0
R
Indicates the state of a bit-programming process.
0 - The controller is busy. A bit-programming is in progress
1 - The logic which performs bit-programming is idle.
When the controller is in MPROG mode, this bit should be
used to monitor the progress of a programming request.
During APROG mode, the value of this field it is normal to
changing periodically.
0x1
Table 66: OTPC_AHBADR_REG (0x07F4000C)
Bit
Mode Symbol
Description
Reset
31:2
R/W
-
OTPC_AHBADR
It is the AHB address used by the AHB master interface of
the controller (the bits [31:2]). The bits [1:0] of the address
are considered always as equal to zero.
0x1FF00
00
1:0
-
Reserved
0x0
Table 67: OTPC_CELADR_REG (0x07F40010)
Bit
Mode Symbol
Description
Reset
0x0
31:14
13:0
-
-
Reserved
R/W
OTPC_CELADR
It represents an OTP address, where the OTP word width
should be considered equal to 32-bits.
0x0
The physical word width of the OTP memory is 72 bits. The
8-bits of them are used for the implementation of an error
correcting code and are not available for the application. The
remaining 64 bits of the physical word are available for the
application.
The OTPC_CELADDR can distinguish the upper 32 bits
from the lower 32 bits of the available for the application bits
of the OTP word.
When OTPC_CELADDR[0] = 1 the address refers to the
upper 32 bits of the physical OTP address
OTPC_CELADDR[14:1].
The register is used during the modes: AREAD and APROG.
Table 68: OTPC_NWORDS_REG (0x07F40014)
Bit
Mode Symbol
Description
Reset
0x0
31:14
13:0
-
-
Reserved
R/W
OTPC_NWORDS
The number of words (minus one) for reading /programming
during the AREAD/APROG mode.
0x0
The width of the word should be considered equal to 32-bits.
The value of the register remains unchanged, by the internal
logic of the controller.
During mirroring, this register reflects the current ammount
of copied data.
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Table 69: OTPC_FFPRT_REG (0x07F40018)
Bit
Mode Symbol
R/W OTPC_FFPRT
Description
Reset
31:0
Provides access to the fifo through an access port.
Write to this register with the corresponding data, when the
APROG mode is selected and the dma is disabled.
Read from this register the corresponding data, when the
AREAD mode is selected and the dma is disabled.
The software should check the OTPCC_STAT_FWORDS
register for the availability of data/space, before accessing
the fifo.
0x0
Table 70: OTPC_FFRD_REG (0x07F4001C)
Bit
Mode Symbol
OTPC_FFRD
Description
Reset
31:0
R
Contains the value which taken from the fifo, after a read of
the OTPC_FFPRT_REG register.
0x0
Table 71: OTPC_PWORDL_REG (0x07F40020)
Bit
Mode Symbol
R/W OTPC_PWORDL
Description
Reset
31:0
Contains the lower 32 bits that can be programmed with the
help of the OTPC_PCTRL_REG, while the controller is in
MPROG mode.
0x0
Table 72: OTPC_PWORDH_REG (0x07F40024)
Bit
Mode Symbol
R/W OTPC_PWORDH
Description
Reset
31:0
Contains the upper 32 bits that can be programmed with the
help of the OTPC_PCTRL_REG, while the controller is in
MPROG mode.
0x0
Table 73: OTPC_TIM1_REG (0x07F40028)
Bit
Mode Symbol
Description
Reset
31
R/W
R/W
R/W
R/W
R/W
OTPC_TIM1_CC_T_
25NS
The number of hclk_c clock periods (minus one) that give a
time interval at least higher than 25ns.
0x0
30:27
26:22
21:16
15:8
OTPC_TIM1_CC_T_
200NS
The number of hclk_c clock periods (minus one) that give a
time interval at least higher than 200ns.
0x3
OTPC_TIM1_CC_T_
500NS
The number of hclk_c clock periods (minus one) that give a
time interval at least higher than 500ns
0x8
OTPC_TIM1_CC_T_
1US
The number of hclk_c clock periods (minus one) that give a
time interval at least higher than 1us.
0x10
0x4F
OTPC_TIM1_CC_T_
PW
The number of hclk_c clock periods (minus one) that give a
time interval that is
- at least higher than 4.8us
- and lower than 5.2 us
It is preferred the programmed value to give a time interval
equal to 5us.
It defines the duration of the programming pulse for every bit
that written in the OTP cell.
7:0
R/W
OTPC_TIM1_CC_T_
CADX
The number of hclk_c clock periods (minus one) that give a
time interval at least higher than 2us.It is used as a wait time
each time where the OTP cell is enabled.
0x20
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Table 74: OTPC_TIM2_REG (0x07F4002C)
Bit
Mode Symbol
Description
Reset
31:24
23
-
-
Reserved
0x0
0x0
R/W
OTPC_TIM2_RDENL This bit has meaning only when the
_PROT
OTPC_TIM1_CC_T_25NS = 1, otherwise has no functional-
ity.
0 - The minimum number of clock cycles for which the signal
read_enable of the OTP memory stays inactive is one clock
cycle. This is also applicable if OTPC_TIM1_CC_T_25NS =
0.
1 - The minimum number of clock cycles for which the signal
read_enable of the OTP memory stays inactive is two clock
cycles. The controller adds one extra wait state in the AHB
access , if it is required, in order to achieves this constraint.
This setting is applicable only if OTPC_TIM1_CC_T_25NS =
1.
22:16
R/W
OTPC_TIM2_CC_T_
BCHK
The number of hclk_c clock periods (minus one) that give a
time interval between 100ns and 200ns. This time interval is
used for the reading of the contents of the OTP cell during
the TBLANK mode.
0x1
15:10
9:0
-
-
Reserved
0x0
0x0
R/W
OTPC_TIM2_CC_ST
BY_THR
This register controls a power saving feature, which is appli-
cable only in MREAD mode. The controller monitors the
accesses in the OTP cell. If there is no access for more than
OTPC_TIM2_CC_STBY_THR hclk_c clock cycles, the OTP
cell goes to the standby while the controller itself remains in
the MREAD mode. The OTP cell will be enabled again when
will be applied a new read request. The enabling of the OTP
cell has a cost of 2us (OTPC_TIM1_CC_T_CADX hclk_c
clock cycles).
When OTPC_TIM2_CC_STBY_THR = 0 the power saving
feature is disabled and the OTP cell remains active while the
controller is in MREAD mode.
37.2 QSPIC REGISTER FILE
Table 75: Register map QSPIC
Address
Port
Description
0x0C000000
0x0C000004
0x0C000008
0x0C00000C
QSPIC_CTRLBUS_REG
QSPIC_CTRLMODE_REG
QSPIC_RECVDATA_REG
QSPIC_BURSTCMDA_REG
SPI Bus control register for the Manual mode
Mode Control register
Received data for the Manual mode
The way of reading in Auto mode (command register
A)
0x0C000010
QSPIC_BURSTCMDB_REG
The way of reading in Auto mode (command register
B)
0x0C000014
0x0C000018
0x0C00001C
0x0C000020
0x0C000024
0x0C000028
QSPIC_STATUS_REG
The status register of the QSPI controller
Write data to SPI Bus for the Manual mode
Read data from SPI Bus for the Manual mode
Send dummy clocks to SPI Bus for the Manual mode
QSPI Erase control register
QSPIC_WRITEDATA_REG
QSPIC_READDATA_REG
QSPIC_DUMMYDATA_REG
QSPIC_ERASECTRL_REG
QSPIC_ERASECMDA_REG
The way of erasing in Auto mode (command register
A)
0x0C00002C
QSPIC_ERASECMDB_REG
The way of erasing in Auto mode (command register
B)
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Table 75: Register map QSPIC
Address
Port
Description
0x0C000030
0x0C000034
QSPIC_BURSTBRK_REG
QSPIC_STATUSCMD_REG
Read break sequence in Auto mode
The way of reading the status of external device in
Auto mode
0x0C000038
0x0C00003C
QSPIC_CHCKERASE_REG
QSPIC_GP_REG
Check erase progress in Auto mode
QSPI General Purpose control register
Table 76: QSPIC_CTRLBUS_REG (0x0C000000)
Bit
31:5
4
Mode Symbol
Description
Reset
-
-
Reserved
0x0
W
QSPIC_DIS_CS
Write 1 to disable the chip select (active low) when the con-
0x0
troller is in Manual mode.
3
2
1
0
W
W
W
W
QSPIC_EN_CS
Write 1 to enable the chip select (active low) when the con-
troller is in Manual mode.
0x0
QSPIC_SET_QUAD
QSPIC_SET_DUAL
Write 1 to set the bus mode in Quad mode when the control- 0x0
ler is in Manual mode.
Write 1 to set the bus mode in Dual mode when the control-
ler is in Manual mode.
0x0
QSPIC_SET_SINGL
E
Write 1 to set the bus mode in Single SPI mode when the
controller is in Manual mode.
0x0
Table 77: QSPIC_CTRLMODE_REG (0x0C000004)
Bit
Mode Symbol
Description
Reset
0x0
31:14
13
-
-
Reserved
R/W
QSPIC_USE_32BA
Controls the length of the address that the external memory
device uses.
0x0
0 - The external memory device uses 24 bits address.
1 - The external memory device uses 32 bits address.
The controller uses this bit in order to decide the number of
the address bytes that has to transfer to the external device
during Auto mode.
12
R/W
QSPIC_FORCENSE
Q_EN
Controls the way with which is addressed by the QSPI con-
troller a burst request from the AMBA bus.
0x0
0: The controller translates a burst access on the AMBA bus
as a burst access on the QSPI bus. That results to the mini-
mum number of command/address phases.
1: The controller will split a burst access on the AMBA bus
into a number of single accesses on the QSPI bus. That
results to a separate command for each beat of the burst.
E.g a 4-beat word incremental AMBA read access will be
split into 4 different sequences on the QSPI bus: command/
address/extra clock/read data. The QSPI_CS will be low only
for the time that is needed for each of these single accesses.
This configuration bit is usefull when the clock frequency of
the QSPI bus is much higher than the clock of the AMBA
bus. In this case the interval for which the CS remains low is
minimized, achieving lower power dissipation with respect of
the case where the QSPIC_FORCENSEQ_EN=0, at cost of
performance.
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Table 77: QSPIC_CTRLMODE_REG (0x0C000004)
Bit
Mode Symbol
Description
Reset
11:9
R/W
QSPIC_PCLK_MD
Read pipe clock delay relative to the falling edge of
QSPI_SCK.
0x0
Refer to QSPI Timing for timing parameters and recom-
mended values: 0 to 7
8
7
R/W
QSPIC_RPIPE_EN
QSPIC_RXD_NEG
Controls the use of the data read pipe.
0x0
0 = The read pipe is disabled; the sampling clock is defined
according to the QSPIC_RXD_NEG setting.
1 = The read pipe is enabled. The delay of the sampling
clock is defined according to the QSPI_PCLK_MD setting.
(Recommended)
R/W
Defines the clock edge that is used for the capturing of the
received data, when the read pipe is not active
(QSPIC_RPIPE_EN = 0).
0x0
0: Sampling of the received data with the positive edge of the
QSPI_SCK
1: Sampling of the received data with the negative edge of
the QSPI_SCK
The internal QSPI_SCK clock that is used by the controller
for the capturing of the received data has a skew in respect
of the QSPI_SCK that is received by the external memory
device. In order to be improved the timing requirements of
the read path, the controller supports a read pipe register
with programmable clock delay. See also the
QSPIC_RPIPE_EN register.
6
R/W
QSPIC_HRDY_MD
This configuration bit is useful when the frequency of the
QSPI clock is much lower than the clock of the AMBA bus, in
order to not locks the AMBA bus for a long time.
0x0
0: Adds wait states via hready signal when an access is per-
formed on the QSPIC_WRITEDATA, QSPIC_READDATA
and QSPIC_DUMMYDATA registers. It is not needed to
checked the QSPIC_BUSY of the QSPIC_STATUS_REG.
1: The controller don't adds wait states via the hready signal,
when is performed access on the QSPIC_WRITEDATA,
QSPIC_READDATA and QSPIC_DUMMYDATA registers.
The QSPIC_BUSY bit of the QSPIC_STATUS_REG must be
checked in order to be detected the completion of the
requested access.
It is applicable only when the controller is in Manual mode. In
the case of the Auto mode, the controller always adds wait
states via the hready signal.
5
4
3
R/W
R/W
R/W
QSPIC_IO3_DAT
QSPIC_IO2_DAT
QSPIC_IO3_OEN
The value of QSPI_IO3 pad if QSPI_IO3_OEN is 1
The value of QSPI_IO2 pad if QSPI_IO2_OEN is 1
0x0
0x0
0x0
QSPI_IO3 output enable. Use this only in SPI or Dual SPI
mode to control /HOLD signal. When the Auto Mode is
selected (QSPIC_AUTO_MD = 1) and the QUAD SPI is
used, set this bit to zero.
0: The QSPI_IO3 pad is input.
1: The QSPI_IO3 pad is output.
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Table 77: QSPIC_CTRLMODE_REG (0x0C000004)
Bit
Mode Symbol
Description
Reset
2
R/W
QSPIC_IO2_OEN
QSPI_IO2 output enable. Use this only in SPI or Dual SPI
mode to control /WP signal. When the Auto Mode is selected
(QSPIC_AUTO_MD = 1) and the QUAD SPI is used, set this
bit to zero.
0x0
0: The QSPI_IO2 pad is input.
1: The QSPI_IO2 pad is output.
1
0
R/W
R/W
QSPIC_CLK_MD
Mode of the generated QSPI_SCK clock
0: Use Mode 0 for the QSPI_CLK. The QSPI_SCK is low
when QSPI_CS is high.
1: Use Mode 3 for the QSPI_CLK. The QSPI_SCK is high
when QSPI_CS is high.
0x0
0x0
QSPIC_AUTO_MD
Mode of operation
0: The Manual Mode is selected.
1: The Auto Mode is selected.
During an erasing the QSPIC_AUTO_MD goes in read only
mode (see QSPIC_ERASE_EN)
Table 78: QSPIC_RECVDATA_REG (0x0C000008)
Bit
Mode Symbol
QSPIC_RECVDATA
Description
Reset
31:0
R
This register contains the received data when the
0x0
QSPIC_READDATA_REG register is used in Manual mode,
in order to be retrieved data from the external memory
device and QSPIC_HRDY_MD=1 && QSPIC_BUSY=0.
Table 79: QSPIC_BURSTCMDA_REG (0x0C00000C)
Bit
Mode Symbol
Description
Reset
31:30
R/W
R/W
R/W
QSPIC_DMY_TX_M
D
It describes the mode of the SPI bus during the Dummy
0x0
bytes phase.
00 - Single SPI
01 - Dual
10 - Quad
11 - Reserved
29:28
27:26
QSPIC_EXT_TX_MD It describes the mode of the SPI bus during the Extra Byte
0x0
0x0
phase.
00 - Single SPI
01 - Dual
10 - Quad
11 - Reserved
QSPIC_ADR_TX_M
D
It describes the mode of the SPI bus during the address
phase.
00 - Single SPI
01 - Dual
10 - Quad
11 - Reserved
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Table 79: QSPIC_BURSTCMDA_REG (0x0C00000C)
Bit
Mode Symbol
Description
Reset
25:24
R/W
QSPIC_INST_TX_M
It describes the mode of the SPI bus during the instruction
0x0
D
phase.
00 - Single SPI
01 - Dual
10 - Quad
11 - Reserved
23:16
15:8
R/W
R/W
QSPIC_EXT_BYTE
QSPIC_INST_WB
The value of an extra byte which will be transferred after
address (only if QSPIC_EXT_BYTE_EN= 1). Usually this is
the Mode Bits in Dual/Quad SPI I/O instructions.
0x0
0x0
Instruction Value for Wrapping Burst. This value is the
selected instruction when QSPIC_WRAP_MD is equal to 1
and the access is a wrapping burst of length and size
described by the bit fields QSPIC_WRAP_LEN and
QSPIC_WRAP_SIZE respectively.
7:0
R/W
QSPIC_INST
Instruction Value for Incremental Burst or Single read
access. This value is the selected instruction at the cases of
incremental burst or single read access. Also this value is
used when a wrapping burst is not supported
(QSPIC_WRAP_MD)
0x0
Table 80: QSPIC_BURSTCMDB_REG (0x0C000010)
Bit
Mode Symbol
Description
Reset
0x0
31:16
15
-
-
Reserved
R/W
QSPIC_DMY_FORC
E
By setting this bit, the number of dummy bytes is forced to be
equal to 3. In this case the QSPIC_DMY_NUM field is over-
ruled and has no function.
0x0
0 - The number of dummy bytes is controlled by the
QSPIC_DMY_NUM field
1 - Three dummy bytes are used. The QSPIC_DMY_NUM is
overruled.
14:12
11:10
R/W
R/W
QSPIC_CS_HIGH_M
IN
Between the transmissions of two different instructions to the
flash memory, the SPI bus stays in idle state (QSPI_CS
high) for at least this number of QSPI_SCK clock cycles. See
the QSPIC_ERS_CS_HI register for some exceptions.
0x0
0x0
QSPIC_WRAP_SIZE
It describes the selected data size of a wrapping burst
(QSPIC_WRAP_MD).
00 - byte access (8-bits)
01 - half word access (16 bits)
10 - word access (32-bits)
11 - Reserved
9:8
R/W
QSPIC_WRAP_LEN
It describes the selected length of a wrapping burst
(QSPIC_WRAP_MD).
0x0
00 - 4 beat wrapping burst
01 - 8 beat wrapping burst
10 - 16 beat wrapping burst
11 - Reserved
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Table 80: QSPIC_BURSTCMDB_REG (0x0C000010)
Bit
Mode Symbol
Description
Reset
7
R/W
QSPIC_WRAP_MD
Wrap mode
0x0
0 - The QSPIC_INST is the selected instruction at any
access.
1 - The QSPIC_INST_WB is the selected instruction at any
wrapping burst access of length and size described by the
registers QSPIC_WRAP_LEN and QSPIC_WRAP_SIZE
respectively. In all other cases the QSPIC_INST is the
selected instruction. Use this feature only when the serial
FLASH memory supports a special instruction for wrapping
burst access.
6
R/W
R/W
QSPIC_INST_MD
QSPIC_DMY_NUM
Instruction mode
0x0
0x0
0 - Transmit instruction at any burst access.
1 - Transmit instruction only in the first access after the
selection of Auto Mode.
5:4
Number of Dummy Bytes
00 - Zero Dummy Bytes (Don't Send Dummy Bytes)
01 - Send 1 Dummy Byte
10 - Send 2 Dummy Bytes
11 - Send 4 Dummy Bytes
When QSPIC_DMY_FORCE is enabled, the
QSPIC_DMY_NUM is overruled. In this case the number of
dummy bytes is defined by the QSPIC_DMY_FORCE and is
equal to 3, independent of the value of the
QSPIC_DMY_NUM.
3
R/W
QSPIC_EXT_HF_DS
Extra Half Disable Output
0x0
0 - if QSPIC_EXT_BYTE_EN=1, is transmitted the complete
QSPIC_EXT_BYTE
1 - if QSPIC_EXT_BYTE_EN=1, the output is disabled (hi-z)
during the transmission of bits [3:0] of QSPIC_EXT_BYTE
2
R/W
R/W
QSPIC_EXT_BYTE_
EN
Extra Byte Enable
0 - Don't Send QSPIC_EXT_BYTE
1 - Send QSPIC_EXT_BYTE
0x0
0x0
1:0
QSPIC_DAT_RX_MD It describes the mode of the SPI bus during the data phase.
00 - Single SPI
01 - Dual
10 - Quad
11 - Reserved
Table 81: QSPIC_STATUS_REG (0x0C000014)
Bit
31:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
QSPIC_BUSY
The status of the SPI Bus.
0x0
0 - The SPI Bus is idle
1 - The SPI Bus is active. Read data, write data or dummy
data activity is in progress.
Has meaning only in Manual mode and only when
QSPIC_HRDY_MD = 1.
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Table 82: QSPIC_WRITEDATA_REG (0x0C000018)
Bit
Mode Symbol
QSPIC_WRITEDATA
Description
Reset
31:0
W
Writing to this register is generating a data transfer from the
controller to the external memory device. The data written in
this register is then transferred to the memory using the
selected mode of the SPI bus (SPI, Dual SPI, Quad SPI).
The data size of the access to this register can be 32-bits /
16-bits/ 8-bits and is equal to the number of the transferred
bits.
0x0
This register has meaning only when the controller is in Man-
ual mode.
Table 83: QSPIC_READDATA_REG (0x0C00001C)
Bit
Mode Symbol
QSPIC_READDATA
Description
Reset
31:0
R
A read access at this register generates a data transfer from
the external memory device to the QSPIC controller. The
data is transferred using the selected mode of the SPI bus
(SPI, Dual SPI, Quad SPI). The data size of the access to
this register can be 32-bits / 16-bits / 8-bits and is equal to
the number of the transferred bits.
0x0
This register has meaning only when the controller is in Man-
ual mode.
Table 84: QSPIC_DUMMYDATA_REG (0x0C000020)
Bit
Mode Symbol
QSPIC_DUMMYDAT
Description
Reset
31:0
W
Writing to this register generates a number of clock pulses to
the SPI bus. During the last clock of this activity in the SPI
bus, the QSPI_IOx data pads are in hi-z state. The data size
of the access to this register can be 32-bits / 16-bits/ 8-bits.
The number of generated pulses is equal to: (size of AHB
bus access) / (size of SPI bus). The size of SPI bus is equal
to 1, 2 or 4 for Single, Dual or Quad SPI mode respectively.
This register has meaning only when the controller is in Man-
ual mode.
0x0
A
Table 85: QSPIC_ERASECTRL_REG (0x0C000024)
Bit
Mode Symbol
Description
Reset
0x0
31:28
27:25
-
-
Reserved
R
QSPIC_ERS_STATE
It shows the progress of sector/block erasing (read only).
000 = No Erase.
0x0
001 = Pending erase request
010 = Erase procedure is running
011 = Suspended Erase procedure
100 = Finishing the Erase procedure
101..111 = Reserved
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Table 85: QSPIC_ERASECTRL_REG (0x0C000024)
Bit
Mode Symbol
R/W QSPIC_ERASE_EN
Description
Reset
0x0
24
During Manual mode (QSPIC_AUTO_MD = 0). This bit is in
read only mode.
During Auto mode (QSPIC_AUTO_MD = 1). To request the
erasing of the block/sector (QSPIC_ERS_ADDR, 12'b0)
write 1 to this bit. This bit is cleared automatically with the
end of the erasing. Until the end of erasing the
QSPIC_ERASE_EN remains in read only mode. During the
same period of time the controller remains in Auto Mode
(QSPIC_AUTO_MD goes in read only mode).
23:4
R/W
QSPIC_ERS_ADDR
Defines the address of the block/sector that is requested to
be erased.
0x0
If QSPIC_USE_32BA = 0 (24 bits addressing), bits
QSPIC_ERASECTRL_REG[23-12] determine the block/
sector address bits [23-12].
QSPIC_ERASECTRL_REG[11-4] are ignored by the control-
ler.
If QSPIC_USE_32BA = 1 (32 bits addressing) bits
QSPIC_ERASECTRL_REG[23-4] determine the block / sec-
tors address bits [31:12]
3:0
-
-
Reserved
0x0
Table 86: QSPIC_ERASECMDA_REG (0x0C000028)
Bit
Mode Symbol
Description
Reset
0x0
31:24
23:16
15:8
7:0
R/W
R/W
R/W
R/W
QSPIC_RES_INST
The code value of the erase resume instruction
The code value of the erase suspend instruction.
The code value of the write enable instruction
The code value of the erase instruction.
QSPIC_SUS_INST
QSPIC_WEN_INST
QSPIC_ERS_INST
0x0
0x0
0x0
Table 87: QSPIC_ERASECMDB_REG (0x0C00002C)
Bit
Mode Symbol
Description
Reset
0x0
31:30
29:24
-
-
Reserved
R/W
QSPIC_RESSUS_DL Defines a timer that counts the minimum allowed delay
0x0
Y
between an erase suspend command and the previous
erase resume command (or the initial erase command).
0 = Dont wait. The controller starts immediately to suspend
the erase procedure.
1..63 = The controller waits for at least this number of
222kHz clock cycles before the suspension of erasing. Time
starts counting after the end of the previous erase resume
command (or the initial erase command)
23:20
19:16
-
-
Reserved
0x0
0x0
R/W
QSPIC_ERSRES_HL The controller must stay without flash memory reading
D
requests for this number of AMBA hclk clock cycles, before
to perform the command of erase or erase resume
15 - 0
15
-
-
Reserved
0x0
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Table 87: QSPIC_ERASECMDB_REG (0x0C00002C)
Bit
Mode Symbol
Description
Reset
14:10
R/W
R/W
QSPIC_ERS_CS_HI
After the execution of instructions: write enable, erase, erase
suspend and erase resume, the QSPI_CS remains high for
at least this number of qspi bus clock cycles.
0x0
9:8
7:6
5:4
3:2
1:0
QSPIC_EAD_TX_MD The mode of the QSPI Bus during the address phase of the
0x0
erase instruction
00 - Single
01 - Dual
10 - Quad
11 - Reserved
R/W
R/W
R/W
R/W
QSPIC_RES_TX_MD The mode of the QSPI Bus during the transmission of the
0x0
0x0
0x0
0x0
resume instruction
00 - Single
01 - Dual
10 - Quad
11 - Reserved
QSPIC_SUS_TX_MD The mode of the QSPI Bus during the transmission of the
suspend instruction.
00 - Single
01 - Dual
10 - Quad
11 - Reserved
QSPIC_WEN_TX_M
D
The mode of the QSPI Bus during the transmission of the
write enable instruction.
00 - Single
01 - Dual
10 - Quad
11 - Reserved
QSPIC_ERS_TX_MD The mode of the QSPI Bus during the instruction phase of
the erase instruction
00 - Single
01 - Dual
10 - Quad
11 - Reserved
Table 88: QSPIC_BURSTBRK_REG (0x0C000030)
Bit
Mode Symbol
Description
Reset
0x0
31:21
20
-
-
Reserved
R/W
QSPIC_SEC_HF_DS Disable output during the transmission of the second half
(QSPIC_BRK_WRD[3:0]). Setting this bit is only useful if
QSPIC_BRK_EN =1 and QSPIC_BRK_SZ= 1.
0x0
0 - The controller drives the QSPI bus during the transmis-
sion of the QSPIC_BRK_WRD[3:0].
1 - The controller leaves the QSPI bus in Hi-Z during the
transmission of the QSPIC_BRK_WORD[3:0].
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Table 88: QSPIC_BURSTBRK_REG (0x0C000030)
Bit
Mode Symbol
Description
Reset
19:18
R/W
QSPIC_BRK_TX_MD The mode of the QSPI Bus during the transmission of the
0x0
burst break sequence.
00 - Single
01 - Dual
10 - Quad
11 - Reserved
17
16
R/W
R/W
QSPIC_BRK_SZ
QSPIC_BRK_EN
The size of Burst Break Sequence
0 - One byte (Send QSPIC_BRK_WRD[15:8])
1 - Two bytes (Send QSPIC_BRK_WRD[15:0])
0x0
0x0
Controls the application of a special command (read burst
break sequence) that is used in order to force the device to
abandon the continuous read mode.
0 - The special command is not applied
1 - The special command is applied
This special command is applied by the controller to the
external device under the following conditions:
- the controller is in Auto mode
- the QSPIC_INST_MD = 1
- the previous command that has been applied in the exter-
nal device was read
- the controller want to apply to the external device a com-
mand different than the read.
15:0
R/W
QSPIC_BRK_WRD
This is the value of a special command (read burst break
sequence) that is applied by the controller to the external
memory device, in order to force the memory device to aban-
don the continuous read mode.
0x0
Table 89: QSPIC_STATUSCMD_REG (0x0C000034)
Bit
Mode Symbol
Description
Reset
0x0
31:23
22
-
-
Reserved
R/W
QSPIC_STSDLY_SE
L
Defines the timer which is used to count the delay that it has
to wait before to read the FLASH Status Register, after an
erase or an erase resume command.
0x0
0 - The delay is controlled by the QSPIC_RESSTS_DLY
which counts on the qspi clock.
1 - The delay is controlled by the QSPIC_RESSUS_DLY
which counts on the 222 kHz clock.
21:16
R/W
QSPIC_RESSTS_DL
Y
Defines a timer that counts the minimum required delay
between the reading of the status register and of the previ-
ous erase or erase resume instruction.
0x0
0 - Dont wait. The controller starts to reading the Flash mem-
ory status register immediately.
1..63 - The controller waits for at least this number of
QSPI_CLK cycles and afterwards it starts to reading the
Flash memory status register. The timer starts to count after
the end of the previous erase or erase resume command.
The actual timer that will be used by the controller before the
reading of the Flash memory status register is defined by the
QSPIC_STSDLY_SEL.
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Table 89: QSPIC_STATUSCMD_REG (0x0C000034)
Bit
Mode Symbol
Description
Reset
15
R/W
QSPIC_BUSY_VAL
Defines the value of the Busy bit which means that the flash
is busy.
0x0
0 - The flash is busy when the Busy bit is equal to 0.
1 - The flash is busy when the Busy bit is equal to 1.
14:12
11:10
R/W
R/W
QSPIC_BUSY_POS
It describes who from the bits of status represents the
Busy bit (7 - 0).
0x0
0x0
QSPIC_RSTAT_RX_
MD
The mode of the QSPI Bus during the receive status phase
of the read status instruction
00 - Single
01 - Dual
10 - Quad
11 - Reserved
9:8
7:0
R/W
R/W
QSPIC_RSTAT_TX_
MD
The mode of the QSPI Bus during the instruction phase of
the read status instruction.
00 - Single
01 - Dual
10 - Quad
0x0
0x0
11 - Reserved
QSPIC_RSTAT_INST The code value of the read status instruction.
It is transmitted during the instruction phase of the read sta-
tus instruction.
Table 90: QSPIC_CHCKERASE_REG (0x0C000038)
Bit
Mode Symbol
QSPIC_CHCKERAS
Description
Reset
31:0
W
Writing any value to this register during erasing, forces the
controller to read the flash memory status register. Depend-
ing on the value of the Busy bit, it updates the
QSPIC_ERASE_EN.
0x0
E
Table 91: QSPIC_GP_REG (0x0C00003C)
Bit
Mode Symbol
Description
Reset
4:3
R/W
QSPIC_PADS_SLE
W
QSPI pads slew rate control. Indicative values under certain
conditions:
0x0
0: Rise=1.7 V/ns, Fall=1.9 V/ns (weak)
1: Rise=2.0 V/ns, Fall=2.3 V/ns
2: Rise=2.3 V/ns, Fall=2.6 V/ns
3: Rise=2.4 V/ns, Fall=2.7 V/ns (strong)
Conditions: FLASH pin capacitance 6 pF, Vcc=1.8V, T=25C
and Idrive=16mA.
2:1
R/W
QSPIC_PADS_DRV
QSPI pads drive current
0: 4 mA
0x0
1: 8 mA
2: 12 mA
3: 16 mA
0
-
-
Reserved
0x0
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37.3 BLE REGISTER FILE
Table 92: Register map BLE
Address
Port
Description
0x40000000
0x40000004
0x40000008
0x4000000C
0x40000010
0x40000014
0x40000018
0x4000001C
0x40000020
0x40000024
0x40000028
0x4000002C
BLE_RWBLECNTL_REG
BLE_VERSION_REG
BLE_RWBLECONF_REG
BLE_INTCNTL_REG
BLE_INTSTAT_REG
BLE Control register
Version register
Configuration register
Interrupt controller register
Interrupt status register
Interrupt raw status register
Interrupt acknowledge register
Base time reference counter
Fine time reference counter
BLE device address LSB register
BLE device address MSB register
BLE_INTRAWSTAT_REG
BLE_INTACK_REG
BLE_BASETIMECNT_REG
BLE_FINETIMECNT_REG
BLE_BDADDRL_REG
BLE_BDADDRU_REG
BLE_CURRENTRXDESCPTR_REG
Rx Descriptor Pointer for the Receive Buffer Chained
List
0x40000030
0x40000034
BLE_DEEPSLCNTL_REG
BLE_DEEPSLWKUP_REG
Deep-Sleep control register
Time (measured in Low Power clock cycles) in Deep
Sleep Mode before waking-up the device
0x40000038
0x4000003C
0x40000040
0x40000044
0x40000050
0x40000054
0x40000058
0x4000005C
0x40000060
0x40000064
0x40000070
0x40000074
0x40000078
0x4000007C
0x40000080
0x40000090
0x400000A0
0x400000A4
0x400000B0
0x400000B4
0x400000B8
0x400000C0
0x400000C4
0x400000C8
0x400000CC
0x400000D0
0x400000D4
BLE_DEEPSLSTAT_REG
BLE_ENBPRESET_REG
BLE_FINECNTCORR_REG
BLE_BASETIMECNTCORR_REG
BLE_DIAGCNTL_REG
Duration of the last deep sleep phase register
Time in low power oscillator cycles register
Phase correction value register
Base Time Counter
Diagnostics Register
BLE_DIAGSTAT_REG
Debug use only
BLE_DEBUGADDMAX_REG
BLE_DEBUGADDMIN_REG
BLE_ERRORTYPESTAT_REG
BLE_SWPROFILING_REG
BLE_RADIOCNTL0_REG
BLE_RADIOCNTL1_REG
BLE_RADIOCNTL2_REG
BLE_RADIOCNTL3_REG
BLE_RADIOPWRUPDN_REG
BLE_ADVCHMAP_REG
BLE_ADVTIM_REG
Upper limit for the memory zone
Lower limit for the memory zone
Error Type Status registers
Software Profiling register
Radio interface control register
Radio interface control register
Radio interface control register
Radio interface control register
RX/TX power up/down phase register
Advertising Channel Map
Advertising Packet Interval
Active scan register
BLE_ACTSCANSTAT_REG
BLE_WLPUBADDPTR_REG
BLE_WLPRIVADDPTR_REG
BLE_WLNBDEV_REG
Start address of public devices list
Start address of private devices list
Devices in white list
BLE_AESCNTL_REG
Start AES register
BLE_AESKEY31_0_REG
BLE_AESKEY63_32_REG
BLE_AESKEY95_64_REG
BLE_AESKEY127_96_REG
BLE_AESPTR_REG
AES encryption key
AES encryption key
AES encryption key
AES encryption key
Pointer to the block to encrypt/decrypt
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Table 92: Register map BLE
Address
Port
Description
0x400000D8
0x400000DC
0x400000E0
0x400000E4
0x400000E8
0x400000F0
0x400000F4
0x400000F8
0x400000FC
0x40000100
0x40000104
0x40000108
0x4000010C
0x40000110
0x40000200
0x40000208
0x4000020C
0x40000210
BLE_TXMICVAL_REG
BLE_RXMICVAL_REG
BLE_RFTESTCNTL_REG
BLE_RFTESTTXSTAT_REG
BLE_RFTESTRXSTAT_REG
BLE_TIMGENCNTL_REG
BLE_GROSSTIMTGT_REG
BLE_FINETIMTGT_REG
BLE_SAMPLECLK_REG
BLE_COEXIFCNTL0_REG
BLE_COEXIFCNTL1_REG
BLE_BLEMPRIO0_REG
BLE_BLEMPRIO1_REG
BLE_BLEPRIOSCHARB_REG
BLE_CNTL2_REG
AES / CCM plain MIC value
AES / CCM plain MIC value
RF Testing Register
RF Testing Register
RF Testing Register
Timing Generator Register
Gross Timer Target value
Fine Timer Target value
Samples the Base Time Counter
Coexistence interface Control 0 Register
Coexistence interface Control 1 Register
Coexistence interface Priority 0 Register
Coexistence interface Priority 1 Register
Priority Scheduling Arbiter Control Register
BLE Control Register 2
BLE_EM_BASE_REG
BLE_DIAGCNTL2_REG
BLE_DIAGCNTL3_REG
Exchange Memory Base Register
Debug use only
Debug use only
Table 93: BLE_RWBLECNTL_REG (0x40000000)
Bit
Mode Symbol
Description
Reset
31
R0/W
R0/W
R/W
MASTER_SOFT_RS
T
Reset the complete BLE Core except registers and timing
generator, when written with a 1. Resets at 0 when action is
performed. No action happens if it is written with 0.
0x0
0x0
0x0
30
29
MASTER_TGSOFT_
RST
Reset the timing generator, when written with a 1. Resets at
0 when action is performed. No action happens if it is written
with 0.
REG_SOFT_RST
Reset the complete register block, when written with a 1.
Resets at 0 when action is performed. No action happens if it
is written with 0.
Note that INT STAT will not be cleared, so the user should
also write to BLE_INTACK_REG after the SW Reset
28
26
R0/W
R0/W
SWINT_REQ
Forces the generation of ble_sw_irq when written with a 1,
and proper masking is set. Resets at 0 when action is per-
formed. No action happens if it is written with 0.
0x0
0x0
RFTEST_ABORT
Abort the current RF Testing defined as per CS-FORMAT
when written with a 1. Resets at 0 when action is performed.
No action happens if it is written with 0.
Note that when RFTEST_ABORT is requested:
1) In case of infinite Tx, the Packet Controller FSM stops at
the end of the current byte in process, and processes
accordingly the packet CRC.
2) In case of Infinite Rx, the Packet Controller FSM either
stops as the end of the current Packet reception (if Access
address has been detected), or simply stop the processing
switching off the RF.
25
R0/W
ADVERT_ABORT
Abort the current Advertising event when written with a 1.
Resets at 0 when action is performed. No action happens if it
is written with 0.
0x0
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Table 93: BLE_RWBLECNTL_REG (0x40000000)
Bit
Mode Symbol
Description
Reset
24
R0/W
R/W
SCAN_ABORT
Abort the current scan window when written with a 1. Resets
at 0 when action is performed. No action happens if it is writ-
ten with 0.
0x0
22
21
20
19
MD_DSB
0: Normal operation of MD bits management
1: Allow a single Tx/Rx exchange whatever the MD bits are.
- value forced by SW from Tx Descriptor
0x0
- value just saved in Rx Descriptor during reception
R/W
R/W
R/W
SN_DSB
0: Normal operation of Sequence number
1: Sequence Number Management disabled:
- value forced by SW from Tx Descriptor
- value ignored in Rx, where no SN error reported.
0x0
0x0
0x0
NESN_DSB
CRYPT_DSB
0: Normal operation of Acknowledge
1: Acknowledge scheme disabled:
- value forced by SW from Tx Descriptor
- value ignored in Rx, where no NESN error reported.
0: Normal operation. Encryption / Decryption enabled.
1: Encryption / Decryption disabled.
Note that if CS-CRYPT_EN is set, then MIC is generated,
and only data encryption is disabled, meaning data sent are
plain data.
18
17
R/W
R/W
WHIT_DSB
CRC_DSB
0: Normal operation. Whitening enabled.
1: Whitening disabled.
0x0
0x0
0: Normal operation. CRC removed from data stream.
1: CRC stripping disabled on Rx packets, CRC replaced by
0x000 in Tx.
16
R/W
R/W
HOP_REMAP_DSB
CORR_MODE
0: Normal operation. Frequency Hopping Remapping algo-
rithm enabled.
1: Frequency Hopping Remapping algorithm disabled
0x0
0x0
13:12
Defines correlation mode, meaningful only if
RW_BLE_CORR_PREAMBLE_ENABLE is set
00: Correlates onto Access Address
01: Correlates onto half preamble and Access Address
10: Correlates onto full preamble and Access Address
11: n/a
9
R/W
R/W
R/W
ADVERTFILT_EN
RWBLE_EN
Advertising Channels Error Filtering Enable control
0: RW-BLE Core reports all errors to RW-BLE Software
1: RW-BLE Core reports only correctly received packet, with-
out error to RW-BLE Software
0x0
0x0
0x0
8
0: Disable RW-BLE Core Exchange Table pre-fetch mecha-
nism.
1: Enable RW-BLE Core Exchange table pre-fetch mecha-
nism.
7:4
RXWINSZDEF
Default Rx Window size in us. Used when device:
• is master connected
• performs its second receipt.
0 is not a valid value. Recommended value is 10 (in deci-
mal).
2:0
R/W
SYNCERR
Indicates the maximum number of errors allowed to recog-
nize the synchronization word.
0x0
Table 94: BLE_VERSION_REG (0x40000004)
Bit
Mode Symbol
TYP
Description
Reset
31:24
R
BLE Core Type
0x1
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Table 94: BLE_VERSION_REG (0x40000004)
Bit
Mode Symbol
Description
Reset
23:16
15:8
7:0
R
R
R
REL
BLE Core version Major release number.
BLE Core upgrade Upgrade number.
BLE Core Build Build number.
0x0
0x0
0x0
UPG
BUILD
Table 95: BLE_RWBLECONF_REG (0x40000008)
Bit
Mode Symbol
Description
Reset
29:24
R
ADD_WIDTH
Value of the RW_BLE_ADDRESS_WIDTH parameter con-
certed into binary.
0x10
22:16
R
RFIF
Radio Interface ID
0x2
0x0
0x0
0x0
0x1
13:8
R
CLK_SEL
DECIPHER
DMMODE
INTMODE
Operating Frequency (in MHz)
0: AES deciphering not present
0: RW-BLE Core is used as a standalone BLE device
6
5
4
R/W
R
R
1: Interrupts are trigger level generated, i.e. stays active at 1
till acknowledgement
3
2
1
0
R
R
R
R
COEX
1: WLAN Coexistence mechanism present
1: Diagnostic port instantiated
0x1
0x1
0x1
0x1
USEDBG
USECRYPT
BUSWIDTH
1: AES-CCM Encryption block present
Processor bus width:
1: 32 bits
Table 96: BLE_INTCNTL_REG (0x4000000C)
Bit
Mode Symbol
Description
Reset
15
R/W
CSCNTDEVMSK
CSCNT interrupt mask during event. This bit allows to ena-
ble CSCNT interrupt generation during events (i.e. advertis-
ing, scanning, initiating, and connection)
0x1
0: CSCNT Interrupt not generated during events.
1: CSCNT Interrupt generated during events.
9
8
7
6
5
4
3
R/W
R/W
R/W
R/W
R/W
R/W
R/W
SWINTMSK
SW triggered interrupt Mask
0: Interrupt not generated
1: Interrupt generated
0x0
0x1
0x0
0x0
0x0
0x1
0x1
EVENTAPFAINTMSK End of event / anticipated pre-fetch abort interrupt Mask
0: Interrupt not generated
1: Interrupt generated
FINETGTIMINTMSK
Fine Target Timer Mask
0: Interrupt not generated
1: Interrupt generated
GROSSTGTIMINT-
MSK
Gross Target Timer Mask
0: Interrupt not generated
1: Interrupt generated
ERRORINTMSK
CRYPTINTMSK
EVENTINTMSK
Error Interrupt Mask
0: Interrupt not generated
1: Interrupt generated
Encryption engine Interrupt Mask
0: Interrupt not generated
1: Interrupt generated
End of event Interrupt Mask
0: Interrupt not generated
1: Interrupt generated
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Table 96: BLE_INTCNTL_REG (0x4000000C)
Bit
Mode Symbol
Description
Reset
2
R/W
R/W
R/W
SLPINTMSK
Sleep Mode Interrupt Mask
0: Interrupt not generated
1: Interrupt generated
0x1
0x1
0x1
1
0
RXINTMSK
Rx Interrupt Mask
0: Interrupt not generated
1: Interrupt generated
CSCNTINTMSK
625us Base Time Interrupt Mask
0: Interrupt not generated
1: Interrupt generated
Table 97: BLE_INTSTAT_REG (0x40000010)
Bit
Mode Symbol
SWINTSTAT
Description
Reset
9
R
R
R
R
R
R
R
SW triggered interrupt status
0x0
0: No SW triggered interrupt.
1: A SW triggered interrupt is pending
8
7
6
5
4
3
EVENTAPFAINT-
STAT
End of event / Anticipated Pre-Fetch Abort interrupt status
0: No End of Event interrupt.
1: An End of Event interrupt is pending.
0x0
0x0
0x0
0x0
0x0
0x0
FINETGTIMINTSTAT
Masked Fine Target Timer Error interrupt status
0: No Fine Target Timer interrupt.
1: A Fine Target Timer interrupt is pending.
GROSSTGTIMINT-
STAT
Masked Gross Target Timer interrupt status
0: No Gross Target Timer interrupt.
1: A Gross Target Timer interrupt is pending.
ERRORINTSTAT
CRYPTINTSTAT
EVENTINTSTAT
Masked Error interrupt status
0: No Error interrupt.
1: An Error interrupt is pending.
Masked Encryption engine interrupt status
0: No Encryption / Decryption interrupt.
1: An Encryption / Decryption interrupt is pending.
Masked End of Event interrupt status
0: No End of Advertising / Scanning / Connection interrupt.
1: An End of Advertising / Scanning / Connection interrupt is
pending.
2
1
0
R
R
R
SLPINTSTAT
RXINTSTAT
Masked Sleep interrupt status
0: No End of Sleep Mode interrupt.
1: An End of Sleep Mode interrupt is pending.
0x0
0x0
0x0
Masked Packet Reception interrupt status
0: No Rx interrupt.
1: An Rx interrupt is pending.
CSCNTINTSTAT
Masked 625us base time reference interrupt status
0: No 625us Base Time interrupt.
1: A 625us Base Time interrupt is pending.
Table 98: BLE_INTRAWSTAT_REG (0x40000014)
Bit
Mode Symbol
SWINTRAWSTAT
Description
Reset
9
R
SW triggered interrupt raw status
0: No SW triggered interrupt.
0x0
1: A SW triggered interrupt is pending.
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Table 98: BLE_INTRAWSTAT_REG (0x40000014)
Bit
Mode Symbol
Description
Reset
8
R
EVENTAPFAINT-
RAWSTAT
End of event / Anticipated Pre-Fetch Abort interrupt raw sta-
tus
0x0
0: No End of Event interrupt.
1: An End of Event interrupt is pending.
7
6
5
4
3
R
R
R
R
R
FINETGTIMINTRAW- Fine Target Timer Error interrupt raw status
0x0
0x0
0x0
0x0
0x0
STAT
0: No Fine Target Timer interrupt.
1: A Fine Target Timer interrupt is pending.
GROSSTGTIMIN-
TRAWSTAT
Gross Target Timer interrupt raw status
0: No Gross Target Timer interrupt.
1: A Gross Target Timer interrupt is pending.
ERRORINTRAW-
STAT
Error interrupt raw status
0: No Error interrupt.
1: An Error interrupt is pending.
CRYPTINTRAWSTAT Encryption engine interrupt raw status
0: No Encryption / Decryption interrupt.
1: An Encryption / Decryption interrupt is pending.
EVENTINTRAWSTAT End of Event interrupt raw status
0: No End of Advertising / Scanning / Connection interrupt.
1: An End of Advertising / Scanning / Connection interrupt is
pending.
2
1
0
R
R
R
SLPINTRAWSTAT
Sleep interrupt raw status
0: No End of Sleep Mode interrupt.
1: An End of Sleep Mode interrupt is pending.
0x0
0x0
0x0
RXINTRAWSTAT
Packet Reception interrupt raw status
0: No Rx interrupt.
1: An Rx interrupt is pending.
CSCNTINTRAW-
STAT
625us base time reference interrupt raw status
0: No 625us Base Time interrupt.
1: A 625us Base Time interrupt is pending.
Table 99: BLE_INTACK_REG (0x40000018)
Bit
Mode Symbol
Description
Reset
9
R0/W
SWINTACK
SW triggered interrupt acknowledgement bit
0x0
Software writing 1 acknowledges the SW triggered interrupt.
This bit resets SWINTSTAT and SWINTRAWSTAT flags.
Resets at 0 when action is performed
8
R0/W
EVENTAPFAINTACK
FINETGTIMINTACK
End of event / Anticipated Pre-Fetch Abort interrupt acknowl- 0x0
edgement bit
Software writing 1 acknowledges the End of event / Antici-
pated Pre-Fetch Abort interrupt. This bit resets EVENTAP-
FAINTSTAT and EVENTAPFAINTRAWSTAT flags.
Resets at 0 when action is performed
7
6
R0/W
R0/W
Fine Target Timer interrupt acknowledgement bit
Software writing 1 acknowledges the Fine Timer interrupt.
This bit resets FINETGTIMINTSTAT and FINETGTIMIN-
TRAWSTAT flags.
0x0
0x0
Resets at 0 when action is performed
GROSSTGTI-
MINTACK
Gross Target Timer interrupt acknowledgement bit
Software writing 1 acknowledges the Gross Timer interrupt.
This bit resets GROSSTGTIMINTSTAT and GROSSTGTI-
MINTRAWSTAT flags.
Resets at 0 when action is performed
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Table 99: BLE_INTACK_REG (0x40000018)
Bit
Mode Symbol
Description
Reset
5
R0/W
R0/W
R0/W
ERRORINTACK
Error interrupt acknowledgement bit
0x0
0x0
0x0
Software writing 1 acknowledges the Error interrupt. This bit
resets ERRORINTSTAT and ERRORINTRAWSTAT flags.
Resets at 0 when action is performed
4
3
CRYPTINTACK
EVENTINTACK
Encryption engine interrupt acknowledgement bit Software
writing 1 acknowledges the Encryption engine interrupt. This
bit resets CRYPTINTSTAT and CRYPTINTRAWSTAT flags.
Resets at 0 when action is performed
End of Event interrupt acknowledgment bit
Software writing 1 acknowledges the End of Advertising /
Scanning / Connection interrupt. This bit resets SLPINT-
STAT and SLPINTRAWSTAT flags.
Resets at 0 when action is performed
2
R0/W
SLPINTACK
End of Deep Sleep interrupt acknowledgment bit
Software writing 1 acknowledges the End of Sleep Mode
interrupt. This bit resets SLPINTSTAT and SLPINTRAW-
STAT flags.
0x0
Resets at 0 when action is performed
1
0
R0/W
R0/W
RXINTACK
Packet Reception interrupt acknowledgment bit
Software writing 1 acknowledges the Rx interrupt. This bit
resets RXINTSTAT and RXINTRAWSTAT flags.
Resets at 0 when action is performed
0x0
0x0
CSCNTINTACK
625us base time reference interrupt acknowledgment bit
Software writing 1 acknowledges the CLKN interrupt. This bit
resets CLKINTSTAT and CLKINTRAWSTAT flags.
Resets at 0 when action is performed
Table 100: BLE_BASETIMECNT_REG (0x4000001C)
Bit
Mode Symbol
BASETIMECNT
Description
Reset
26:0
R
Value of the 625us base time reference counter. Updated
each time SAMPCLK is written. Used by the SW in order to
synchronize with the HW
0x0
Table 101: BLE_FINETIMECNT_REG (0x40000020)
Bit
Mode Symbol
FINECNT
Description
Reset
9:0
R
Value of the current s fine time reference counter. Updated
each time SAMPCLK is written. Used by the SW in order to
synchronize with the HW, and obtain a more precise sleep
duration
0x0
Table 102: BLE_BDADDRL_REG (0x40000024)
Bit
Mode Symbol
R/W BDADDRL
Description
Reset
31:0
Bluetooth Low Energy Device Address. LSB part.
0x0
Table 103: BLE_BDADDRU_REG (0x40000028)
Bit
Mode Symbol
R/W PRIV_NPUB
Description
Reset
16
Bluetooth Low Energy Device Address privacy indicator
0: Public Bluetooth Device Address
0x0
1: Private Bluetooth Device Address
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Table 103: BLE_BDADDRU_REG (0x40000028)
Bit
Mode Symbol
R/W BDADDRU
Description
Reset
15:0
Bluetooth Low Energy Device Address. MSB part.
0x0
Table 104: BLE_CURRENTRXDESCPTR_REG (0x4000002C)
Bit
Mode Symbol
Description
Reset
31:16
R/W
ETPTR
Exchange Table Pointer that determines the starting point of
the Exchange Table
0x0
14:0
R/W
CURRENTRX-
DESCPTR
Rx Descriptor Pointer that determines the starting point of
the Receive Buffer Chained List
0x0
Table 105: BLE_DEEPSLCNTL_REG (0x40000030)
Bit
Mode Symbol
Description
Reset
31
R/W
R
EXTWKUPDSB
External Wake-Up disable
0: RW-BLE Core can be woken by external wake-up
1: RW-BLE Core cannot be woken up by external wake-up
0x0
15
4
DEEP_SLEEP_STAT
Indicator of current Deep Sleep clock mux status:
0: RW-BLE Core is not yet in Deep Sleep Mode
1: RW-BLE Core is in Deep Sleep Mode (only
low_power_clk is running)
0x0
0x0
R0/W
R0/W
SOFT_WAKEUP_RE
Q
Wake Up Request from RW-BLE Software. Applies when
system is in Deep Sleep Mode. It wakes up the RW-BLE
Core when written with a 1. Resets at 0 when action is per-
formed. No action happens if it is written with 0.
3
DEEP_SLEEP_COR
R_EN
625us base time reference integer and fractional part correc- 0x0
tion. Applies when system has been woken-up from Deep
Sleep Mode. It enables Fine Counter and Base Time counter
when written with a 1. Resets at 0 when action is performed.
No action happens if it is written with 0.
2
R0/W
R/W
DEEP_SLEEP_ON
0: RW-BLE Core in normal active mode
1: Request RW-BLE Core to switch in deep sleep mode.
This bit is reset on DEEP_SLEEP_STAT falling edge.
0x0
1:0
DEEP_SLEEP_IRQ_
EN
Always set to "3" when DEEP_SLEEP_ON is set to "1".
It controls the generation of BLE_WAKEUP_LP_IRQ.
0x0
Table 106: BLE_DEEPSLWKUP_REG (0x40000034)
Bit
Mode Symbol
R/W DEEPSLTIME
Description
Reset
31:0
Determines the time in low_power_clk clock cycles to spend
in Deep Sleep Mode before waking-up the device. This
ensures a maximum of 37 hours and 16mn sleep mode
capabilities at 32kHz. This ensures a maximum of 36 hours
and 16mn sleep mode capabilities at 32.768kHz
0x0
Table 107: BLE_DEEPSLSTAT_REG (0x40000038)
Bit
Mode Symbol
DEEPSLDUR
Description
Reset
31:0
R
Actual duration of the last deep sleep phase measured in
low_power_clk clock cycle. DEEPSLDUR is set to zero at
the beginning of the deep sleep phase, and is incremented
at each low_power_clk clock cycle until the end of the deep
sleep phase.
0x0
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Table 108: BLE_ENBPRESET_REG (0x4000003C)
Bit
Mode Symbol
Description
Reset
31:21
R/W
R/W
R/W
TWEXT
Minimum and recommended value is "TWIRQ_RESET + 1".
In the case of wake-up due to an external wake-up request,
TWEXT specifies the time delay in low power oscillator
cycles to deassert BLE_WAKEUP_LP_IRQ.
Refer also to GP_CONTROL_REG[BLE_WAKEUP_REQ].
Range is [0...64 ms] for 32kHz; [0...62.5 ms] for 32.768kHz
0x0
0x0
0x0
20:10
9:0
TWIRQ_SET
TWIRQ_RESET
Minimum value is "TWIRQ_RESET + 1".
Time in low power oscillator cycles to set
BLE_WAKEUP_LP_IRQ before the BLE sleep timer expira-
tion.
Refer also to BLE_DEEPSLWKUP_REG[DEEPSLTIME].
Range is [0...64 ms] for 32kHz; [0...62.5 ms] for 32.768kHz
Recommended value is 1.
Time in low power oscillator cycles to reset
BLE_WAKEUP_LP_IRQ before the BLE sleep timer expira-
tion.
Refer also to BLE_DEEPSLWKUP_REG[DEEPSLTIME].
Range is [0...32 ms] for 32kHz; [0...31.25 ms] for 32.768kHz.
Table 109: BLE_FINECNTCORR_REG (0x40000040)
Bit
Mode Symbol
R/W FINECNTCORR
Description
Reset
9:0
Phase correction value for the 625us reference counter (i.e.
Fine Counter) in us.
0x0
Table 110: BLE_BASETIMECNTCORR_REG (0x40000044)
Bit
Mode Symbol
R/W BASETIMECNT-
CORR
Description
Reset
26:0
Base Time Counter correction value.
0x0
Table 111: BLE_DIAGCNTL_REG (0x40000050)
Bit
Mode Symbol
Description
Reset
-
-
-
Undefined
-
Table 112: BLE_DIAGSTAT_REG (0x40000054)
Bit
Mode Symbol
Description
Reset
-
-
-
Undefined
-
Table 113: BLE_DEBUGADDMAX_REG (0x40000058)
Bit
Mode Symbol
Description
Reset
31:16
R/W
REG_ADDMAX
Upper limit for the Register zone indicated by the reg_inzone
flag
0x0
15:0
R/W
EM_ADDMAX
Upper limit for the Exchange Memory zone indicated by the
em_inzone flag
0x0
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Table 114: BLE_DEBUGADDMIN_REG (0x4000005C)
Bit
Mode Symbol
Description
Reset
31:16
R/W
REG_ADDMIN
Lower limit for the Register zone indicated by the reg_inzone
flag
0x0
15:0
R/W
EM_ADDMIN
Lower limit for the Exchange Memory zone indicated by the
em_inzone flag
0x0
Table 115: BLE_ERRORTYPESTAT_REG (0x40000060)
Bit
Mode Symbol
Description
Reset
17
R/W
CONCEVTIRQ_ERR
OR
Indicates whether two consecutive and concurrent
ble_event_irq have been generated, and not acknowledged
in time by the RW-BLE Software.
0: No error
0x0
1: Error occurred
16
15
R
R
RXDATA_PTR_ERR
OR
Indicates whether Rx data buffer pointer value programmed
is null: this is a major programming failure.
0: No error
0x0
0x0
1: Error occurred
TXDATA_PTR_ERR
OR
Indicates whether Tx data buffer pointer value programmed
is null during Advertising / Scanning / Initiating events, or
during Master / Slave connections with non-null packet
length: this is a major programming failure.
0: No error
1: Error occurred
14
13
R
R
RXDESC_EMPTY_E
RROR
Indicates whether Rx Descriptor pointer value programmed
in register is null: this is a major programming failure.
0: No error
0x0
0x0
1: Error occurred
TXDESC_EMPTY_E
RROR
Indicates whether Tx Descriptor pointer value programmed
in Control Structure is null during Advertising / Scanning / Ini-
tiating events: this is a major programming failure.
0: No error
1: Error occurred
12
11
R
R
CSFORMAT_ERROR Indicates whether CS-FORMAT has been programmed with
0x0
0x0
an invalid value: this is a major software programming fail-
ure.
0: No error
1: Error occurred
LLCHMAP_ERROR
Indicates Link Layer Channel Map error, happens when
actual number of CS-LLCHMAP bit set to one is different
from CS-NBCHGOOD at the beginning of Frequency Hop-
ping process
0: No error
1: Error occurred
10
9
R
R
ADV_UNDERRUN
IFS_UNDERRUN
Indicates Advertising Interval Under run, occurs if time
between two consecutive Advertising packet (in Advertising
mode) is lower than the expected value.
0: No error
0x0
0x0
1: Error occurred
Indicates Inter Frame Space Under run, occurs if IFS time is
not enough to update and read Control Structure/Descrip-
tors, and/or White List parsing is not finished and/or Decryp-
tion time is too long to be finished on time
0: No error
1: Error occurred
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Table 115: BLE_ERRORTYPESTAT_REG (0x40000060)
Bit
Mode Symbol
Description
Reset
8
R
WHITELIST_ERROR
Indicates White List Timeout error, occurs if White List pars-
0x0
ing is not finished on time
0: No error
1: Error occurred
7
6
R
EVT_CNTL_APFM_E Indicates Anticipated Pre-Fetch Mechanism error: happens
0x0
RROR
when 2 consecutive events are programmed, and when the
first event is not completely finished while second pre-fetch
instant is reached.
0: No error
1: Error occured
R
EVT_SCHDL_APFM
_ERROR
Indicates Anticipated Pre-Fetch Mechanism error: happens
when 2 consecutive events are programmed, and when the
first event is not completely finished while second pre-fetch
instant is reached.
0x0
0: No error
1: Error occured
5
4
3
2
1
R
EVT_SCHDL_ENTR
Y_ERROR
Indicates Event Scheduler faced Invalid timing programing
on two consecutive ET entries (e.g first one with 624s offset
and second one with no offset)
0: No error
1: Error occurred
0x0
0x0
0x0
0x0
0x0
R/W
R
EVT_SCHDL_EMAC
C_ERROR
Indicates Event Scheduler Exchange Memory access error,
happens when Exchange Memory accesses are not served
in time, and blocks the Exchange Table entry read
0: No error
1: Error occurred
RADIO_EMACC_ER
ROR
Indicates Radio Controller Exchange Memory access error,
happens when Exchange Memory accesses are not served
in time and data are corrupted.
0: No error
1: Error occurred
R
PKTCNTL_EMACC_
ERROR
Indicates Packet Controller Exchange Memory access error,
happens when Exchange Memory accesses are not served
in time and Tx/Rx data are corrupted
0: No error
1: Error occurred
R
RXCRYPT_ERROR
TXCRYPT_ERROR
Indicates real time decryption error, happens when AES-
CCM decryption is too slow compared to Packet Controller
requests. A 16-bytes block has to be decrypted prior the next
block is received by the Packet Controller
0: No error
1: Error occurred
0
R
Indicates Real Time encryption error, happens when AES-
CCM encryption is too slow compared to Packet Controller
requests. A 16-bytes block has to be encrypted and pre-
pared on Packet Controller request, and needs to be ready
before the Packet Controller has to send ti
0: No error
0x0
1: Error occurred
Table 116: BLE_SWPROFILING_REG (0x40000064)
Bit
Mode Symbol
R/W SWPROFVAL
Description
Reset
31:0
Software Profiling register: used by RW-BLE Software for
profiling purpose: this value is copied on Diagnostic port
0x0
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Table 117: BLE_RADIOCNTL0_REG (0x40000070)
Bit
Mode Symbol
Description
Reset
31:0
-
-
Reserved
0x0
Table 118: BLE_RADIOCNTL1_REG (0x40000074)
Bit
Mode Symbol
R/W XRFSEL
Description
Reset
20:16
Extended radio selection field, Must be set to "2".
0x0
Table 119: BLE_RADIOCNTL2_REG (0x40000078)
Bit
Mode Symbol
Description
Reset
31:0
-
-
Reserved
0x0
Table 120: BLE_RADIOCNTL3_REG (0x4000007C)
Bit
Mode Symbol
Description
Reset
31:0
-
-
Reserved
0x0
Table 121: BLE_RADIOPWRUPDN_REG (0x40000080)
Bit
Mode Symbol
Description
Reset
30:24
R/W
R/W
R/W
R/W
RTRIP_DELAY
Defines round trip delay value. This value correspond to the
addition of data latency in Tx and data latency in Rx. Value is
in us
0x0
23:16
11:8
7:0
RXPWRUP
TXPWRDN
TXPWRUP
This register holds the length in s of the RX power up phase
for the current radio device. Default value is 210us (reset
value). Operating range depends on the selected radio.
0xD2
0x3
This register extends the length in s of the TX power down
phase for the current radio device. Default value is 3us (reset
value). Operating range depends on the selected radio.
This register holds the length in s of the TX power up phase
for the current radio device. Default value is 210us (reset
value). Operating range depends on the selected radio.
0xD2
Table 122: BLE_ADVCHMAP_REG (0x40000090)
Bit
Mode Symbol
R/W ADVCHMAP
Description
Reset
2:0
Advertising Channel Map, defined as per the advertising
connection settings. Contains advertising channels index 37
to 39. If ADVCHMAP[i] equals:
0x7
0: Do not use data channel i+37.
1: Use data channel i+37.
Table 123: BLE_ADVTIM_REG (0x400000A0)
Bit
Mode Symbol
R/W ADVINT
Description
Reset
13:0
Advertising Packet Interval defines the time interval in
between two ADV_xxx packet sent. Value is in us.
Value to program depends on the used Advertising Packet
type and the device filtering policy.
0x0
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Table 124: BLE_ACTSCANSTAT_REG (0x400000A4)
Bit
Mode Symbol
Description
Reset
24:16
8:0
R
R
BACKOFF
Active scan mode back-off counter initialization value.
Active scan mode upper limit counter value.
0x1
0x1
UPPERLIMIT
Table 125: BLE_WLPUBADDPTR_REG (0x400000B0)
Bit
Mode Symbol
R/W WLPUBADDPTR
Description
Reset
15:0
Start address pointer of the public devices white list.
0x0
Table 126: BLE_WLPRIVADDPTR_REG (0x400000B4)
Bit
Mode Symbol
R/W WLPRIVADDPTR
Description
Reset
15:0
Start address pointer of the private devices white list.
0x0
Table 127: BLE_WLNBDEV_REG (0x400000B8)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
R/W
R/W
NBPRIVDEV
NBPUBDEV
Number of private devices in the white list.
Number of public devices in the white list.
0x0
Table 128: BLE_AESCNTL_REG (0x400000C0)
Bit
Mode Symbol
Description
Reset
1
R/W
AES_MODE
0: Cipher mode
0x0
1: Decipher mode
0
R0/W
AES_START
Writing a 1 starts AES-128 ciphering/deciphering process.
This bit is reset once the process is finished (i.e.
ble_crypt_irq interrupt occurs, even masked)
0x0
Table 129: BLE_AESKEY31_0_REG (0x400000C4)
Bit
Mode Symbol
R/W AESKEY31_0
Description
Reset
31:0
AES encryption 128-bit key. Bit 31 down to 0
0x0
Table 130: BLE_AESKEY63_32_REG (0x400000C8)
Bit
Mode Symbol
R/W AESKEY63_32
Description
Reset
31:0
AES encryption 128-bit key. Bit 63 down to 32
0x0
Table 131: BLE_AESKEY95_64_REG (0x400000CC)
Bit
Mode Symbol
R/W AESKEY95_64
Description
Reset
31:0
AES encryption 128-bit key. Bit 95 down to 64
0x0
Table 132: BLE_AESKEY127_96_REG (0x400000D0)
Bit
Mode Symbol
R/W AESKEY127_96
Description
Reset
31:0
AES encryption 128-bit key. Bit 127 down to 96
0x0
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Table 133: BLE_AESPTR_REG (0x400000D4)
Bit
Mode Symbol
R/W AESPTR
Description
Reset
15:0
Pointer to the memory zone where the block to cipher/deci-
pher using AES-128 is stored.
0x0
Table 134: BLE_TXMICVAL_REG (0x400000D8)
Bit
Mode Symbol
TXMICVAL
Description
Reset
31:0
R
AES-CCM plain MIC value. Valid on when MIC has been cal- 0x0
culated (in Tx)
Table 135: BLE_RXMICVAL_REG (0x400000DC)
Bit
Mode Symbol
RXMICVAL
Description
Reset
31:0
R
AES-CCM plain MIC value. Valid on once MIC has been
extracted from Rx packet.
0x0
Table 136: BLE_RFTESTCNTL_REG (0x400000E0)
Bit
Mode Symbol
Description
Reset
31
R/W
R/W
INFINITERX
Applicable in RF Test Mode only
0: Normal mode of operation
1: Infinite Rx window
0x0
27
RXPKTCNTEN
Applicable in RF Test Mode only
0x0
0: Rx packet count disabled
1: Rx packet count enabled, and reported in CS-RXCCMPK-
TCNT and RFTESTRXSTAT-RXPKTCNT on RF abort com-
mand
15
14
R/W
R/W
INFINITETX
Applicable in RF Test Mode only
0: Normal mode of operation.
1: Infinite Tx packet / Normal start of a packet but endless
payload
0x0
0x0
TXLENGTHSRC
Applicable only in Tx/Rx RF Test mode
0: Normal mode of operation: TxDESC-TXADVLEN controls
the Tx packet payload size
1: Uses RFTESTCNTL-TXLENGTH packet length (can sup-
port up to 512 bytes transmit)
13
12
11
R/W
R/W
R/W
PRBSTYPE
TXPLDSRC
TXPKTCNTEN
Applicable only in Tx/Rx RF Test mode
0: Tx Packet Payload are PRBS9 type
1: Tx Packet Payload are PRBS15 type
0x0
0x0
0x0
Applicable only in Tx/Rx RF Test mode
0: Tx Packet Payload source is the Control Structure
1: Tx Packet Payload are PRBS generator
Applicable in RF Test Mode only
0: Tx packet count disabled
1: Tx packet count enabled, and reported in CS-TXCCMPK-
TCNT and RFTESTTXSTAT-TXPKTCNT on RF abort com-
mand
8:0
R/W
TXLENGTH
Applicable only for Tx/Rx RF Test mode, and valid when
RFTESTCNTL-TXLENGTHSRC = 1
0x0
Tx packet length in number of byte
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Table 137: BLE_RFTESTTXSTAT_REG (0x400000E4)
Bit
Mode Symbol
R/W TXPKTCNT
Description
Reset
31:0
Reports number of transmitted packet during Test Modes.
Value is valid if RFTESTCNTL-TXPKTCNTEN is set
0x0
Table 138: BLE_RFTESTRXSTAT_REG (0x400000E8)
Bit
Mode Symbol
R/W RXPKTCNT
Description
Reset
31:0
Reports number of correctly received packet during Test
Modes (no sync error, no CRC error).
0x0
Value is valid if RFTESTCNTL-RXPKTCNTEN is set
Table 139: BLE_TIMGENCNTL_REG (0x400000F0)
Bit
Mode Symbol
Description
Reset
31
R/W
APFM_EN
Controls the Anticipated pre-Fetch Abort mechanism
0x1
0: Disabled
1: Enabled
25:16
8:0
R/W
R/W
PREFETCHABORT_
TIME
Defines the instant in s at which immediate abort is required
after anticipated pre-fetch abort
0x1FE
0x96
PREFETCH_TIME
Defines Exchange Table pre-fetch instant in us
Table 140: BLE_GROSSTIMTGT_REG (0x400000F4)
Bit
Mode Symbol
R/W GROSSTARGET
Description
Reset
22:0
Gross Timer Target value on which a ble_grosstgtim_irq
must be generated. This timer has a precision of 10ms: inter-
rupt is generated only when GROSSTARGET[22:0] = BASE-
TIMECNT[26:4] and BASETIMECNT[3:0] = 0.
0x0
Table 141: BLE_FINETIMTGT_REG (0x400000F8)
Bit
Mode Symbol
R/W FINETARGET
Description
Reset
26:0
Fine Timer Target value on which a ble_finetgtim_irq must be
generated. This timer has a precision of 625us: interrupt is
generated only when FINETARGET = BASETIMECNT
0x0
Table 142: BLE_SAMPLECLK_REG (0x400000FC)
Bit
Mode Symbol
R0/W SAMP
Description
Reset
0
Writing a 1 samples the Base Time Counter value in BASE-
TIMECNT register. Resets at 0 when action is performed.
0x0
Table 143: BLE_COEXIFCNTL0_REG (0x40000100)
Bit
Mode Symbol
R/W WLCRXPRIOMODE
Description
Reset
21:20
Defines Bluetooth Low Energy packet ble_rx mode behavior. 0x0
00: Rx indication excluding Rx Power up delay (starts when
correlator is enabled)
01: Rx indication including Rx Power up delay
10: Rx High priority indicator
11: n/a
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Table 143: BLE_COEXIFCNTL0_REG (0x40000100)
Bit
Mode Symbol
Description
Reset
17:16
R/W
R/W
R/W
WLCTXPRIOMODE
Defines Bluetooth Low Energy packet ble_tx mode behavior
00: Tx indication excluding Tx Power up delay
01: Tx indication including Tx Power up delay
10: Tx High priority indicator
0x0
0x0
0x0
11: n/a
7:6
5:4
WLANTXMSK
WLANRXMSK
Determines how wlan_tx impact BLE Tx and Rx
00: wlan_tx has no impact (default mode)
01: wlan_tx can stop BLE Tx, no impact on BLE Rx
10: wlan_tx can stop BLE Rx, no impact on BLE Tx
11: wlan_tx can stop both BLE Tx and BLE Rx
Determines how wlan_rx impact BLE Tx and Rx
00: wlan_rx has no impact
01: wlan_rx can stop BLE Tx, no impact on BLE Rx (default
mode)
10: wlan_rx can stop BLE Rx, no impact on BLE Tx
11: wlan_rx can stop both BLE Tx and BLE Rx
1
0
R/W
R/W
SYNCGEN_EN
COEX_EN
Determines whether ble_sync is generated or not.
0: ble_sync pulse not generated
1: ble_sync pulse generated
0x0
0x0
Enable / Disable control of the MWS/WLAN Coexistence
control
0: Coexistence interface disabled
1: Coexistence interface enabled
Table 144: BLE_COEXIFCNTL1_REG (0x40000104)
Bit
Mode Symbol
Description
Reset
28:24
R/W
R/W
R/W
WLCPRXTHR
Applies on ble_rx if WLCRXPRIOMODE equals 10
Determines the threshold for Rx priority setting.
If ble_pti[3:0] output value is greater than WLCPRXTHR,
then Rx Bluetooth Low Energy priority is considered as high,
and must be provided to the WLAN coexistence interface
0x0
20:16
14:8
WLCPTXTHR
Applies on ble_tx if WLCTXPRIOMODE equals 10
Determines the threshold for priority setting.
If ble_pti[3:0] output value is greater than WLCPTXTHR,
then Tx Bluetooth Low Energy priority is considered as high,
and must be provided to the WLAN coexistence interface
0x0
0x0
WLCPDURATION
Applies on ble_tx if WLCTXPRIOMODE equals 10
Applies on ble_rx if WLCRXPRIOMODE equals 10
Determines how many s the priority information must be
maintained
Note that if WLCPDURATION = 0x00, then Tx/Rx priority
levels are maintained till Tx/Rx EN are de-asserted.
6:0
R/W
WLCPDELAY
Applies on ble_tx if WLCTXPRIOMODE equals 10.
Applies on ble_rx if WLCRXPRIOMODE equals 10.
Determines the delay (in us) in Tx/Rx enables rises the time
Bluetooth Low energy Tx/Rx priority has to be provided .
0x0
Table 145: BLE_BLEMPRIO0_REG (0x40000108)
Bit
Mode Symbol
Description
Reset
0x3
31:28
27:24
23:20
R/W
R/W
R/W
BLEM7
BLEM6
BLEM5
Set Priority value for Passive Scanning
Set Priority value for Non-Connectable Advertising
Set Priority value for Connectable Advertising BLE message
0x4
0x4
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Table 145: BLE_BLEMPRIO0_REG (0x40000108)
Bit
Mode Symbol
Description
Reset
19:16
15:12
11:8
R/W
R/W
R/W
BLEM4
BLEM3
BLEM2
Set Priority value for Active Scanning BLE message
Set Priority value for Initiating (Scanning) BLE message
0x9
0xA
0xD
Set Priority value for Data Channel transmission BLE mes-
sage
7:4
3:0
R/W
R/W
BLEM1
BLEM0
Set Priority value for LLCP BLE message
0xE
0xF
Set Priority value for Initiating (Connection Request
Response) BLE message
Table 146: BLE_BLEMPRIO1_REG (0x4000010C)
Bit
Mode Symbol
R/W BLEMDEFAULT
Description
Reset
31:28
Set default priority value for other BLE message than those
defined above
0x3
Table 147: BLE_BLEPRIOSCHARB_REG (0x40000110)
Bit
Mode Symbol
Description
Reset
15
R/W
R/W
BLEPRIOMODE
Determine BLE Priority Scheduling Arbitration Mode
0: BLE Decision instant not used
1: BLE Decision instant used
0x0
7:0
BLEMARGIN
Determine the decision instant margin for Priority Scheduling
Arbitration.
0x0
Table 148: BLE_CNTL2_REG (0x40000200)
Bit
Mode Symbol
Description
Reset
0x0
31:22
21
-
-
Reserved
R/W
BLE_RSSI_SEL
0: Select Peak-hold RSSI value (default).
1: Select current Average RSSI value.
0x0
20
R/W
WAKEUPLPSTAT
The status of the BLE_WAKEUP_LP_IRQ. The Interrupt
Service Routine of BLE_WAKEUP_LP_IRQ should return
only when the WAKEUPLPSTAT is cleared.
0x0
Note that BLE_WAKEUP_LP_IRQ is automatically acknowl-
edged after the power up of the Radio Subsystem, plus one
Low Power Clock period.
19
R/W
-
SW_RPL_SPI
Keep to 0.
Reserved
0x0
0x0
0x0
18:15
14:9
-
R/W
BLE_CLK_SEL
BLE Clock Select.
Specifies the BLE master clock absolute frequency in MHz.
Typical values are 16 and 8.
Value depends on the selected XTAL frequency and the
value of CLK_RADIO_REG[BLE_DIV] bitfield. For example,
if XTAL oscillates at 16MHz and
CLK_RADIO_REG[BLE_DIV] = 1 (divide by 2), then BLE
master clock frequency is 8MHz and BLE_CLK_SEL should
be set to value 8.
The selected BLE master clock frequency (affected by
BLE_DIV and BLE_CLK_SEL) must be modified and set
only during the initialization time, i.e. before setting
BLE_RWBTLECNTL_REG[RWBLE_EN] to 1.
Refer also to BLE_RWBTLECONF_REG[CLK_SEL].
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Table 148: BLE_CNTL2_REG (0x40000200)
Bit
Mode Symbol
Description
Reset
8
R/W
RADIO_PWRDN_AL
LOW
This active high signal indicates when it is allowed for the
BLE core (embedded in the Radio sub-System power
domain) to be powered down.
0x0
After the assertion of the
BLE_DEEPSLCNTL_REG[DEEP_SLEEP_ON] a hardware
sequence based on the Low Power clock will cause the
assertion of RADIO_PWRDN_ALLOW. The
RADIO_PWRDN_ALLOW will be cleared to "0" when the
BLE core exits from the sleep state, i.e. when the
BLE_SLP_IRQ will be asserted.
7
6
R/W
R/W
MON_LP_CLK
The SW can only write a "0" to this bit.
0x0
0x0
Whenever a positive edge of the low power clock used by
the BLE Timers is detected, then the HW will automatically
set this bit to "1". This functionality will not work if BLE Timer
is in reset state (refer to
CLK_RADIO_REG[BLE_LP_RESET]).
This bit can be used for SW synchronization, to debug the
low power clock, etc.
BLE_CLK_STAT
0: BLE uses low power clock
1: BLE uses master clock
5:3
2
-
-
Reserved
0x0
0x0
R/W
EMACCERRMSK
Exchange Memory Access Error Mask:
When cleared to "0" the EM_ACC_ERR will not cause an
BLE_ERROR_IRQ interrupt.
When set to "1" an BLE_ERROR_IRQ will be generated as
long as EM_ACC_ERR is "1".
1
0
R/W
R/W
EMACCERRACK
EMACCERRSTAT
Exchange Memory Access Error Acknowledge.
When the SW writes a "1" to this bit then the EMAC-
CERRSTAT bit will be cleared.
When the SW writes "0" it will have no affect.
The read value is always "0".
0x0
0x0
Exchange Memory Access Error Status:
The bit is read-only and can be cleared only by writing a "1"
at EMACCERRACK bitfield.
This bit will be set to "1" by the hardware when the controller
will access an EM page that is not mapped according to the
EM_MAPPING value.
When this bit is "1" then the BLE_ERROR_IRQ will be
asserted as long as EMACCERRMSK is "1".
Table 149: BLE_EM_BASE_REG (0x40000208)
Bit
Mode Symbol
Description
Reset
0x0
31:17
16:10
-
-
Reserved
R/W
BLE_EM_BASE_16_
10
The physical address on the system memory map of the
base of the Exchange Memory.
0x0
9:0
-
-
Reserved
0x0
Table 150: BLE_DIAGCNTL2_REG (0x4000020C)
Bit
Mode Symbol
Description
Reset
-
-
-
Undefined
-
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Table 151: BLE_DIAGCNTL3_REG (0x40000210)
Bit
Mode Symbol
Description
Reset
-
-
-
Undefined
-
37.4 AES_HASH REGISTER FILE
Table 152: Register map AES_HASH
Address
Port
Description
0x40020000
0x40020004
0x40020008
0x4002000C
0x40020010
0x40020014
0x40020018
0x4002001C
0x40020020
0x40020024
0x40020028
0x40020100
CRYPTO_CTRL_REG
CRYPTO_START_REG
Crypto Control register
Crypto Start calculation
CRYPTO_FETCH_ADDR_REG
CRYPTO_LEN_REG
Crypto DMA fetch register
Crypto Length of the input block in bytes
Crypto DMA destination memory
Crypto Status register
CRYPTO_DEST_ADDR_REG
CRYPTO_STATUS_REG
CRYPTO_CLRIRQ_REG
CRYPTO_MREG0_REG
CRYPTO_MREG1_REG
CRYPTO_MREG2_REG
CRYPTO_MREG3_REG
CRYPTO_KEYS_START
Crypto Clear interrupt request
Crypto Mode depended register 0
Crypto Mode depended register 1
Crypto Mode depended register 2
Crypto Mode depended register 3
Crypto First position of the AES keys storage memory
Table 153: CRYPTO_CTRL_REG (0x40020000)
Bit
Mode Symbol
Description
Reset
31:18
17
-
-
Reserved
0x0
R/W
CRYPTO_AES_KEX
P
It forces (active high) the execution of the key expansion pro- 0x0
cess with the starting of the AES encryption/decryption pro-
cess. The bit will be cleared automatically by the hardware,
after the completion of the AES key expansion process.
16
R/W
R/W
CRYPTO_MORE_IN
0 - Define that this is the last input block. When the current
input is consumed by the crypto engine and the output data
is written to the memory, the calculation ends
(CRYPTO_INACTIVE goes to one).
1 - The current input data block is not the last. More input
data will follow. When the current input is consumed, the
engine stops and waits for more data
0x0
0x0
(CRYPTO_WAIT_FOR_IN goes to one).
15:10
CRYPTO_HASH_OU
T_LEN
The number of bytes minus one of the hash result which will
be saved at the memory by the DMA. In relation with the
selected hash algorithm the accepted values are:
MD5: 0..15 -> 1-16 bytes
SHA-1: 0..19 -> 1-20 bytes
SHA-256: 0..31 -> 1 - 32 bytes
SHA-256/224: 0..27 -> 1- 28 bytes
SHA-384: 0..47 -> 1 - 48 bytes
SHA-512: 0..63 -> 1 - 64 bytes
SHA-512/224: 0..27 -> 1- 28 bytes
SHA-512/256: 0..31 -> 1 - 32 bytes
9
R/W
CRYPTO_HASH_SE
L
Selects the type of the algorithm
0 - The encryption algorithm (AES)
1 - A hash algorithm.
0x0
The exact algorithm is defined by the fileds CRYPTO_ALG
and CRYPTO_ALG_MD.
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Table 153: CRYPTO_CTRL_REG (0x40020000)
Bit
Mode Symbol
Description
Reset
8
R/W
CRYPTO_IRQ_EN
Interrupt Request Enable
0x0
0 - The interrupt generation ability is disabled.
1 - The interrupt generation ability is enabled. Generates an
interrupt request at the end of operation.
7
R/W
R/W
CRYPTO_ENCDEC
Encryption/Decryption
0 - Decryption
1 - Encryption
0x0
0x0
6:5
CRYPTO_AES_KEY
_SZ
The size of AES Key
00 - 128 bits AES Key
01 - 192 bits AES Key
10 - 256 bits AES Key
11 - 256 bits AES Key
4
R/W
R/W
CRYPTO_OUT_MD
CRYPTO_ALG_MD
Output Mode. This field makes sense only when the AES
algorithm is selected (CRYPTO_HASH_SEL =0)
0 - Write back to memory all the resulting data
1 - Write back to memory only the final block of the resulting
data
0x0
0x0
3:2
It defines the mode of operation of the AES algorithm when
the controller is configured for an encryption/decryption pro-
cessing (CRYPTO_HASH_SEL = 0).
00 - ECB
01 - ECB
10 - CTR
11 - CBC
When the controller is configured to applies a HASH func-
tion, this field selects the desired HASH algorithm with the
help of the CRYPTO_ALG.
00 - HASH algorithms that are based on 32 bits operations
01 - HASH algorithms that are based on 64 bits operations
10 - Reserved
11 - Reserved
See also the CRYPTO_ALG field.
1:0
R/W
CRYPTO_ALG
Algorithm selection. When CRYPTO_HASH_SEL = 0 the
only available choice is the AES algorithm.
00 - AES
0x0
01 - Reserved
10 - Reserved
11 - Reserved
When CRYPTO_HASH_SEL = 1, this field selects the
desired hash algorithms, with the help of the
CRYPTO_ALG_MD field.
If CRYPTO_ALG_MD = 00
00 - MD5
01 - SHA-1
10 - SHA-256/224
11 - SHA-256
If CRYPTO_ALG_MD = 01
00 - SHA-384
01 - SHA-512
10 - SHA-512/224
11 - SHA-512/256
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Table 154: CRYPTO_START_REG (0x40020004)
Bit
31:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R0/W
CRYPTO_START
Write 1 to initiate the processing of the input data. This regis- 0x0
ter is auto-cleared.
Table 155: CRYPTO_FETCH_ADDR_REG (0x40020008)
Bit
Mode Symbol
R/W CRYPTO_FETCH_A
DDR
Description
Reset
31:0
The memory address from where will be retrieved the data
that will be processed. The value of this register is updated
as the calculation proceeds and the output data are written
to the memory.
0x0
Table 156: CRYPTO_LEN_REG (0x4002000C)
Bit
Mode Symbol
Description
Reset
0x0
31:24
23:0
-
-
Reserved
R/W
CRYPTO_LEN
It contains the number of bytes of input data. If this number is
not a multiple of a block size, the data is automatically
extended with zeros. The value of this register is updated as
the calculation proceeds and the output data are written to
the memory.
0x0
Table 157: CRYPTO_DEST_ADDR_REG (0x40020010)
Bit
Mode Symbol
R/W CRYPTO_DEST_AD
DR
Description
Reset
31:0
Destination address at where the result of the processing is
stored. The value of this register is updated as the calcula-
tion proceeds and the output data are written to the memory.
0x0
Table 158: CRYPTO_STATUS_REG (0x40020014)
Bit
31:3
2
Mode Symbol
Description
Reset
-
-
Reserved
0x0
R
CRYPTO_IRQ_ST
The status of the interrupt request line of the CRYPTO block. 0x0
0 - There is no active interrupt request.
1 - An interrupt request is pending.
1
R
CRYPTO_WAIT_FO
R_IN
Indicates the situation where the engine waits for more input
data. This is applicable when the CRYPTO_MORE_IN= 1,
so the input data are fragmented in the memory.
0 - The crypto is not waiting for more input data.
1 - The crypto waits for more input data.
0x0
The CRYPTO_INACTIVE flag remains to zero to indicate
that the calculation is not finished. The supervisor of the
CRYPTO must program to the CRYPTO_FETCH_ADDR
and CRYPTO_LEN a new input data fragment. The calcula-
tion will be continued as soon as the CRYPTO_START reg-
ister will be written with 1. This action will clear the
CRYPTO_WAIT_FOR_IN flag.
0
R
CRYPTO_INACTIVE
0 - The CRYPTO is active. The processing is in progress.
1 - The CRYPTO is inactive. The processing has finished.
0x1
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Table 159: CRYPTO_CLRIRQ_REG (0x40020018)
Bit
31:1
0
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
R0/W
CRYPTO_CLRIRQ
Write 1 to clear a pending interrupt request.
Table 160: CRYPTO_MREG0_REG (0x4002001C)
Bit
Mode Symbol
R/W CRYPTO_MREG0
Description
Reset
31:0
It contains information that are depended by the mode of
operation, when is used the AES algorithm:
CBC - IV[31:0]
0x0
CTR - CTRBLK[31:0]. It is the initial value of the 32 bits
counter.
At any other mode, the contents of this register has no
meaning.
Table 161: CRYPTO_MREG1_REG (0x40020020)
Bit
Mode Symbol
R/W CRYPTO_MREG1
Description
Reset
31:0
It contains information that are depended by the mode of
operation, when is used the AES algorithm:
CBC - IV[63:32]
0x0
CTR - CTRBLK[63:32]
At any other mode, the contents of this register has no
meaning.
Table 162: CRYPTO_MREG2_REG (0x40020024)
Bit
Mode Symbol
R/W CRYPTO_MREG2
Description
Reset
31:0
It contains information that are depended by the mode of
operation, when is used the AES algorithm:
CBC - IV[95:64]
0x0
CTR - CTRBLK[95:64]
At any other mode, the contents of this register has no
meaning.
Table 163: CRYPTO_MREG3_REG (0x40020028)
Bit
Mode Symbol
R/W CRYPTO_MREG3
Description
Reset
31:0
It contains information that are depended by the mode of
operation, when is used the AES algorithm:
CBC - IV[127:96]
0x0
CTR - CTRBLK[127:96]
At any other mode, the contents of this register has no
meaning.
Table 164: CRYPTO_KEYS_START (0x40020100)
Bit
Mode Symbol
CRYPTO_KEY_X
Description
Reset
31:0
W
CRYPTO_KEY_(0-63)
0x0
This is the AES keys storage memory. This memory is
accessible via AHB slave interface, only when the CRYPTO
is inactive (CRYPTO_INACTIVE = 1).
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37.5 CACHE REGISTER FILE
Table 165: Register map CACHE
Address
Port
Description
0x400C3000
0x400C3004
0x400C3008
0x400C3020
0x400C3028
0x400C302C
0x400C3030
0x400C3034
CACHE_CTRL1_REG
CACHE_LNSIZECFG_REG
CACHE_ASSOCCFG_REG
CACHE_CTRL2_REG
CACHE_MRM_HITS_REG
CACHE_MRM_MISSES_REG
CACHE_MRM_CTRL_REG
CACHE_MRM_TINT_REG
Cache control register 1
Cache line size configuration register
Cache associativity configuration register
Cache control register 2
Cache MRM (Miss Rate Monitor) HITS register
Cache MRM (Miss Rate Monitor) MISSES register
Cache MRM (Miss Rate Monitor) CONTROL register
Cache MRM (Miss Rate Monitor) TIME INTERVAL
register
0x400C3038
0x400C3050
CACHE_MRM_THRES_REG
SWD_RESET_REG
Cache MRM (Miss Rate Monitor) THRESHOLD regis-
ter
SWD HW reset control register
Table 166: CACHE_CTRL1_REG (0x400C3000)
Bit
31:2
1
Mode Symbol
Description
Reset
-
-
Reserved
0
R/W
R0/W
CACHE_RES1
CACHE_FLUSH
Reserved. Always keep 0.
0
0
0
Writing a '1' into this bit, flushes the contents of the tag mem-
ories which invalidates the content of the cache memory.
The read of this bit is always '0'.
Note: The flushing of the cache TAG memory takes 0x100 or
0x200 HCLK cycles for a Cache Data RAM size of 8 KB
resp. 16 KB.
Table 167: CACHE_LNSIZECFG_REG (0x400C3004)
Bit
Mode Symbol
Description
Reset
31:2
1:0
-
-
Reserved
0
0
R/W
CACHE_LINE
Cache line size:
0: 8 bytes,
1: 16 bytes,
2: 32 bytes,
3: reserved.
Note: Flush the cache just after the dynamic (run-time)
reconfiguration of the cache with an 8 bytes cache line size:
write the value "01" into the cache control register
CACHE_CTRL1_REG just after the write of the value "00"
into the cache line size configuration register
CACHE_LNSIZECFG_REG.
Table 168: CACHE_ASSOCCFG_REG (0x400C3008)
Bit
Mode Symbol
Description
Reset
31:2
-
-
Reserved
0
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Table 168: CACHE_ASSOCCFG_REG (0x400C3008)
Bit
Mode Symbol
R/W CACHE_ASSOC
Description
Reset
1:0
Cache associativity:
2
0: 1-way (direct mapped)
1: 2-way
2: 4-way
3: reserved.
Note: Flush the cache controller before dynamically decreas-
ing the associativity.
Table 169: CACHE_CTRL2_REG (0x400C3020)
Bit
Mode Symbol
Description
Reset
31:13
12
-
-
Reserved
0
0
R/W
ENABLE_ALSO_QS
PIFLASH_CACHED
Enable also the QSPI FLASH cacheability when remapped
to OTP (cached).
See also the notes at "CACHE_LEN".
11
10
R/W
R/W
ENABLE_ALSO_OT
P_CACHED
Enable also the OTP cacheability when remapped to QSPI
FLASH (cached).
See also the notes at "CACHE_LEN".
0
0
CACHE_CGEN
0: Cache controller clock gating is not enabled.
1: Cache controller clock gating is enabled (enabling power
saving).
Note: This bit must be set to '0' (default) when setting the
CACHE_FLUSH bit while executing from other than QSPI
FLASH cached or OTP cached, e.g. from Booter or SYS-
RAM.
9
R/W
CACHE_WEN
0: Cache Data and TAG memory read only.
1: Cache Data and TAG memory read/write.
The TAG and Data memory are only updated by the cache
controller.
0
There is no HW protection to prevent unauthorized access
by the ARM.
Note: When accessing the memory mapped Cache Data and
TAG memory (for debugging purposes) only 32 bits access
is allowed to the Cache Data memory and only 16 bits
access is allowed to the Cache TAG memory.
8:0
R/W
CACHE_LEN
Length of QSPI FLASH cacheable memory.
(N+1)*64kbyte. N= 0 to 512 (Max of 32 Mbyte).
Setting CACHE_LEN=0 disables the cache.
Note 1: The OTP memory is completely cacheable (when
enabled).
0
Note 2: The max. size/length of QSPI FLASH cacheable
memory is 16 Mbyte when also OTP is cached.
Table 170: CACHE_MRM_HITS_REG (0x400C3028)
Bit
Mode Symbol
Description
Reset
31:19
18:0
-
-
Reserved
0
0
R/W
MRM_HITS
Contains the amount of cache hits.
Table 171: CACHE_MRM_MISSES_REG (0x400C302C)
Bit
Mode Symbol
Description
Reset
31:18
-
-
Reserved
0
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Table 171: CACHE_MRM_MISSES_REG (0x400C302C)
Bit
Mode Symbol
R/W MRM_MISSES
Description
Reset
17:0
Contains the amount of cache misses.
0
Table 172: CACHE_MRM_CTRL_REG (0x400C3030)
Bit
31:4
3
Mode Symbol
Description
Reset
-
-
Reserved
0
0
R/W
MRM_IRQ_THRES_
STATUS
0: No interrupt is generated.
1: Interrupt (pulse-sensitive) is generated because the num-
ber of cache misses reached the programmed threshold
(threshold != 0).
2
1
R/W
R/W
MRM_IRQ_TINT_ST
ATUS
0: No interrupt is generated.
1: Interrupt (pulse-sensitive) is generated because the time
interval counter reached the end (time interval != 0).
0
0
MRM_IRQ_MASK
0: Disables interrupt generation.
1: Enables interrupt generation.
Note: The Cache MRM generates a pulse-sensitive interrupt
towards the ARM processor,
0
R/W
MRM_START
0: Freeze the "misses/hits" counters and reset the time inter-
val counter to the programmed value in
0
CACHE_MRM_TINT_REG.
1: Enables the counters.
Note: In case CACHE_MRM_CTRL_REG[MRM_START] is
set to '1' and CACHE_MRM_TINT_REG (!=0) is used for the
MRM interrupt generation, the time interval counter counts
down (on a fixed reference clock of 16 MHz) until it's '0'. At
that time CACHE_MRM_CTRL_REG[MRM_START] will be
reset automatically to '0' by the MRM hardware and the
MRM interrupt will be generated.
Table 173: CACHE_MRM_TINT_REG (0x400C3034)
Bit
Mode Symbol
Description
Reset
31:18
17:0
-
-
Reserved
0
0
R/W
MRM_TINT
Defines the time interval for the monitoring in 16 MHz clock
cycles. See also the description of
CACHE_MRM_CTRL_REG[MRM_IRQ_TINT_STATUS].
Note: When MRM_TINT=0 (unrealistic value), no interrupt
will be generated.
Table 174: CACHE_MRM_THRES_REG (0x400C3038)
Bit
Mode Symbol
Description
Reset
31:18
17:0
-
-
Reserved
0
0
R/W
MRM_THRES
Defines the threshold to trigger the interrupt generation. See
also the description of
CACHE_MRM_CTRL_REG[MRM_IRQ_THRES_STATUS].
Note: When MRM_THRES=0 (unrealistic value), no interrupt
will be generated.
Table 175: SWD_RESET_REG (0x400C3050)
Bit
Mode Symbol
Description
Reset
31:1
-
-
Reserved
0
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Table 175: SWD_RESET_REG (0x400C3050)
Bit
Mode Symbol
R0/W SWD_HW_RESET_
REQ
Description
Reset
0
0: default.
0
1: HW reset request without resetting the SWD and DAP
controller. The register is automatically reset with a
HW_RESET.
This bit can only be accessed by the debugger software and
not by the application.
37.6 CRG REGISTER FILE
Table 176: Register map CRG
Address
Port
Description
0x50000000
0x50000002
0x50000008
0x5000000A
0x5000000C
0x50000010
0x50000012
0x50000014
0x50000020
0x50000022
0x50000024
0x50000028
0x5000002A
0x50000030
0x50000032
0x50000034
0x50000036
0x50000038
0x5000003A
0x5000003C
0x5000003E
0x50000050
CLK_AMBA_REG
CLK_FREQ_TRIM_REG
CLK_RADIO_REG
CLK_CTRL_REG
CLK_TMR_REG
HCLK, PCLK, divider and clock gates
Xtal frequency trimming register.
Radio PLL control register
Clock control register
Clock control for the timers
Power Management Unit control register
System Control register
PMU_CTRL_REG
SYS_CTRL_REG
SYS_STAT_REG
CLK_32K_REG
System status register
32 kHz oscillator register
CLK_16M_REG
16 MHz RC and xtal oscillator register
20KHz RXC-oscillator control register
bandgap trimming
CLK_RCX20K_REG
BANDGAP_REG
ANA_STATUS_REG
VBUS_IRQ_MASK_REG
VBUS_IRQ_CLEAR_REG
BOD_CTRL_REG
BOD_CTRL2_REG
BOD_STATUS_REG
LDO_CTRL1_REG
LDO_CTRL2_REG
SLEEP_TIMER_REG
XTALRDY_CTRL_REG
status bit of analog (power management) circuits
IRQ masking
Clear pending IRQ register
Brown Out Detection control register
Brown Out Detection control register
Brown Out Detection status register
LDO control register
LDO control register
Timer for regulated sleep
Control register for XTALRDY IRQ
Table 177: CLK_AMBA_REG (0x50000000)
Bit
Mode Symbol
Description
Reset
12
R/W
R/W
QSPI_ENABLE
Clock enable for QSPI controller
0x0
0x0
11:10
QSPI_DIV
QSPI divider
00 = divide by 1
01 = divide by 2
10 = divide by 4
11 = divide by 8
9
8
R/W
R/W
OTP_ENABLE
Clock enable for OTP controller
Clock enable for TRNG block
0x0
0x0
TRNG_CLK_ENABL
E
7
6
R/W
R/W
ECC_CLK_ENABLE
AES_CLK_ENABLE
Clock enable for ECC block
0x0
0x0
Clock enable for AES crypto block
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Table 177: CLK_AMBA_REG (0x50000000)
Bit
Mode Symbol
Description
Reset
5:4
R/W
PCLK_DIV
APB interface clock, Cascaded with HCLK:
00 = divide hclk by 1
0x2
01 = divide hclk by 2
10 = divide hclk by 4
11 = divide hclk by 8
3
-
-
Reserved
0x0
0x2
2:0
R/W
HCLK_DIV
AHB interface and microprocessor clock. Source clock
divided by:
000 = divide hclk by 1
001 = divide hclk by 2
010 = divide hclk by 4
011 = divide hclk by 8
1xx = divide hclk by 16
Table 178: CLK_FREQ_TRIM_REG (0x50000002)
Bit
Mode Symbol
Description
Reset
10:8
R/W
COARSE_ADJ
Xtal frequency course trimming register.
0x0 = lowest frequency
0x0
0x7 = highest frequencyIncrement or decrement the binary
value with 1. Wait approximately 200usec to allow the adjust-
ment to settle.
7:0
R/W
FINE_ADJ
Xtal frequency fine trimming register.0x00 = lowest fre-
0x0
quency
0xFF = highest frequency
Table 179: CLK_RADIO_REG (0x50000008)
Bit
11
9:8
7
Mode Symbol
Description
Reserved
Reserved
Reset
0x0
-
-
-
-
0x0
R/W
BLE_ENABLE
Enable the BLE core clocks.
0x0
When the BLE system clock is disabled, either due to the
CLK_RADIO_REG[BLE_ENABLE] or due to the
PMU_CTRL_REG[BLE_SLEEP], then any access to the
BLE Register file will issue a hard fault to the CPU.
6
R/W
R/W
BLE_LP_RESET
BLE_DIV
Reset for the BLE LP timer
0x1
0x0
5:4
Division factor for BLE core blocks, having as reference the
DIVN clock:
00 = Divide by 1
01 = Divide by 2
10 = Divide by 4
11 = Divide by 8
The programmed frequency should not be lower than 8MHz,
not faster than 16MHz and not faster than the programmed
CPU clock frequency. Refer also to
BLE_CNTL2_REG[BLE_CLK_SEL].
3
R/W
RFCU_ENABLE
Enable the RF control Unit clock
0x0
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Table 179: CLK_RADIO_REG (0x50000008)
Bit
Mode Symbol
R/W RFCU_DIV
Description
Reset
1:0
Division factor for RF Control Unit
0x0 = divide by 1
0x0
0x1 = divide by 2
0x2 = divide by 4
0x3 = divide by 8
The programmed frequency must be exactly 8MHz.
Table 180: CLK_CTRL_REG (0x5000000A)
Bit
Mode Symbol
Description
Reset
15
R
RUNNING_AT_PLL9
6M
Indicates that the PLL96MHz clock is used as clock, and
may not be switched off
0x0
14
13
12
9:8
R
RUNNING_AT_XTAL
16M
Indicates that the XTAL16M clock is used as clock, and may
not be switched off
0x0
0x1
0x0
0x0
R
RUNNING_AT_RC16 Indicates that the RC16M clock is used as clock
M
R
RUNNING_AT_32K
Indicates that either the RC32k or XTAL32k is being used as
clock
R/W
CLK32K_SOURCE
Sets the clock source of the LowerPower clock
'00': 32 Khz RC Oscillator
'01': RCX Oscillator
'10': XTAL32kHz, when using an external crystal i.c.w. the
internal oscillator (set P20 and P21 to FUNC_XTAL32)
'11': XTAL32kHz, when an external generator or MCU
applies a square wave on P20 (set P20 to FUNC_GPIO)
6
R/W
DIVN_XTAL32M_MO
DE
Enables the DIVN divide-by-2, in case of a 32 MHz crystal
(See also XTAL32M_MODE), to keep the DIVN clock at 16
MHz.
0x0
5
4
R/W
R/W
PLL_DIV2
Divides the PLL clock by 2 before being used
0x0
0x0
USB_CLK_SRC
Selects the USB source clock
0 : PLL clock, divided by 2
1 : HCLK
3
2
R/W
R/W
XTAL32M_MODE
Enables dividers in the XTAL for both the RF and the BB
PLL.
0x0
0x0
XTAL16M_DISABLE
Setting this bit instantaneously disables the 16 MHz crystal
oscillator. This bit may not be set to '1' when
"RUNNING_AT_XTAL16M is '1' to prevent deadlock. After
resetting this bit, wait for XTAL16_TRIM_READY to become
'1' before switching to XTAL16 clock source.
1:0
R/W
SYS_CLK_SEL
Selects the clock source.
0x1
0x0 : XTAL16M (check the XTAL16_TRIM_READY bit!!)
0x1 : RC16M
0x2 : The Low Power clock is used
0x3 : The PLL96Mhz is used
Table 181: CLK_TMR_REG (0x5000000C)
Bit
Mode Symbol
R/W P06_TMR1_PWM_M
ODE
Description
Reset
14
Maps Timer1_pwm onto P0_6, when DEBUGGER_EN = '0'.
This state is preserved during deep sleep, to allow PWM5
output on the pad during deep sleep.
0x0
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Table 181: CLK_TMR_REG (0x5000000C)
Bit
Mode Symbol
Description
Reset
13
R/W
WAKEUPCT_ENABL
Enables the clock
0x0
E
12
11
R/W
R/W
BREATH_ENABLE
TMR2_CLK_SEL
Enables the clock
0x0
0x0
Selects the clock source
1 = DIV1 clock
0 = DIVN clock
10
R/W
R/W
TMR2_ENABLE
TMR2_DIV
Enable timer clock
0x0
0x0
9:8
Division factor for Timer
0x0 = divide by 1
0x1 = divide by 2
0x2 = divide by 4
0x3 = divide by 8
7
R/W
TMR1_CLK_SEL
Selects the clock source
1 = DIV1 clock
0x0
0 = DIVN clock
6
R/W
R/W
TMR1_ENABLE
TMR1_DIV
Enable timer clock
0x0
0x0
5:4
Division factor for Timer
0x0 = divide by 1
0x1 = divide by 2
0x2 = divide by 4
0x3 = divide by 8
3
R/W
TMR0_CLK_SEL
Selects the clock source
1 = DIV1 clock
0x0
0 = DIVN clock
2
R/W
R/W
TMR0_ENABLE
TMR0_DIV
Enable timer clock
0x0
0x0
1:0
Division factor for Timer
0x0 = divide by 1
0x1 = divide by 2
0x2 = divide by 4
0x3 = divide by 8
Table 182: PMU_CTRL_REG (0x50000010)
Bit
Mode Symbol
Description
Reset
15
R/W
RETAIN_ECCRAM
Selects the retainability of the ECC RAM during deep sleep.
'1' is retainable, '0' is power gated
0x0
14
13
R/W
RETAIN_CACHE
Selects the retainability of the cache block during deep
sleep.
'1' is retainable, '0' is power gated
0x0
0x0
R/W
ENABLE_CLKLESS
Selects the clockless sleep mode. Wakeup is done asyn-
chronously.
When set to '1', the lp_clk is stopped during deep sleep, until
a wakeup event (not debounced) is detected by the
WAKUPCT block.
When set to '0', the lp_clk continues running, so the MAC
counters keep on running.
This mode cannot be combined with regulated sleep, so
keep SLEEP_TIMER=0 when using ENABLE_CLKLESS.
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Table 182: PMU_CTRL_REG (0x50000010)
Bit
Mode Symbol
Description
Reset
12:8
R/W
RETAIN_RAM
Select the retainability of the 5 system memory RAM macros
during deep sleep.
0x0
'1' is retainable, '0' is power gated
(4) is SYSRAM5
(3) is SYSRAM4
(2) is SYSRAM3
(1) is SYSRAM2
(0) is SYSRAM1
7:6
5
R/W
R/W
OTP_COPY_DIV
Sets the HCLK division during OTP mirroring
0x0
0x0
RESET_ON_WAKEU Perform a Hardware Reset after waking up. Booter will be
P
started.
3
2
-
-
Reserved
0x1
0x1
R/W
BLE_SLEEP
Put the BLE in powerdown.
When the BLE system clock is disabled, either due to the
CLK_RADIO_REG[BLE_ENABLE] or due to the
PMU_CTRL_REG[BLE_SLEEP], then any access to the
BLE Register file will issue a hard fault to the CPU.
1
0
R/W
R/W
RADIO_SLEEP
PERIPH_SLEEP
Put the digital part of the radio in powerdown
0x1
0x1
Put all peripherals (I2C, UART, SPI, ADC) in powerdown
Table 183: SYS_CTRL_REG (0x50000012)
Bit
15
14
Mode Symbol
Description
Reset
0x0
W
SW_RESET
Writing a '1' to this bit will generate a SW_RESET.
R/W
REMAP_INTVECT
0: normal operation
0x0
1: If ARM is in address range 0 to 0xFF then the address is
remapped to SYS-RAM 0x07FC.0000 to 0x07FC.00FF. This
allows to put the interrupt vector table to be placed in RAM
while executing from QSPI
13
R/W
OTP_COPY
Enables OTP to SysRAM copy action after waking up
PD_SYS
0x0
12
11
R/W
R/W
QSPI_INIT
Enables QSPI initialization after wakeup
0x0
0x0
DEV_PHASE
Sets the development phase mode, used in combination with
OTP_COPY
No copy action to SysRAM is done when the system wakes
up.
For emulating startup time, the OTP_COPY bit still needs to
be set.
10
9
R/W
R/W
CACHERAM_MUX
TIMEOUT_DISABLE
Controls accessiblity of Cache RAM:
0x0
0x0
0: the cache controller is bypassed, the cacheRAM is visible
in the memory space next to the DataRAMs
1: the cache controller is enabled, the cacheRAM is not visi-
ble anymore in the memory space
Disables timeout in Power statemachine. By default, the
statemachine continues if after 2 ms the blocks are not
started up. This can be read back from
ANA_STATUS_REG
7
6
R/W
R/W
DEBUGGER_ENABL Enable the debugger. This bit is set by the booter according
0x0
0x0
E
to the OTP header. If not set, the SWDIO and SW_CLK can
be used as gpio ports.
OTPC_RESET_REQ
Reset request for the OTP controller.
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Table 183: SYS_CTRL_REG (0x50000012)
Bit
Mode Symbol
Description
Reset
5
R/W
PAD_LATCH_EN
Latches the control signals of the pads for state retention in
powerdown mode.
0x1
0 = Control signals are retained
1 = Latch is transparant, pad can be recontrolled
4:3
2:0
R/W
REMAP_RAMS
REMAP_ADR0
Defines the sequence of the 3 first DataRAMs in the memory
space. DataRAM4, DataRAM5 and potentially CacheRAM,
cannot not be reshuffled.
0x0: DataRAM1, DataRAM2, DataRAM3
0x1: DataRAM2, DataRAM1, DataRAM3
0x2: DataRAM3, DataRAM1, DataRAM2
0x3: DataRAM3, DataRAM2, DataRAM1
0x0
R/W
Controls which memory is located at address 0x0000 for
execution.
0x0
0x0: ROM
0x1: OTP
0x2: FLASH
0x3: RAMS (for the exact configuration see REMAP_RAMS)
0x4: FLASH un-cached (for verification only)
0x5: OTP un-cached (for verification only)
0x6: Cache Data RAM (CACHERAM_MUX=0, for testing
purposes only)
Note 1: DWord (64 bits) access is not supported by the
Cache Data RAM interface in mirrored mode (only 32, 16
and 8 bits).
Note 2: DMA access is not supported by the Cache Data
RAM interface when REMAP_ADR0=0x6.
Table 184: SYS_STAT_REG (0x50000014)
Bit
11
10
9
Mode Symbol
Description
Reset
0x0
-
-
Reserved
-
-
Reserved
0x1
R
R
-
BLE_IS_UP
Indicates that PD_DBG is functional
Indicates that PD_DBG is in power down
Reserved
0x0
8
BLE_IS_DOWN
-
0x1
7
0x0
0x1
6
R
XTAL16_TRIM_REA
DY
Indicates that XTAL trimming mechanism is ready, i.e. the
trimming equals CLK_FREQ_TRIM_REG.
5
4
3
2
1
0
R
-
DBG_IS_ACTIVE
-
Indicates that a debugger is attached.
Reserved
0x0
0x0
0x0
0x1
0x0
0x1
R
R
R
R
PER_IS_UP
PER_IS_DOWN
RAD_IS_UP
RAD_IS_DOWN
Indicates that PD_PER is functional
Indicates that PD_PER is in power down
Indicates that PD_RAD is functional
Indicates that PD_RAD is in power down
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Table 185: CLK_32K_REG (0x50000020)
Bit
Mode Symbol
Description
Reset
12
R/W
XTAL32K_DISABLE_ Setting this bit disables the amplitude regulation of the
0x0
AMPREG
XTAL32kHz oscillator.
Set this bit to '1' for an external clock to XTAL32Kp
Keep this bit '0' with a crystal between XTAL32Kp and
XTAL32Km
11:8
R/W
RC32K_TRIM
0000 = lowest frequency
0111 = default
0x7
1111 = highest frequency
7
R/W
R/W
RC32K_ENABLE
XTAL32K_CUR
Enables the 32kHz RC oscillator
0x1
0x3
6:3
Bias current for the 32kHz XTAL oscillator. 0000 is minimum,
1111 is maximum, 0011 is default. For each application there
is an optimal setting for which the start-up behavior is opti-
mal
2:1
0
R/W
R/W
XTAL32K_RBIAS
Setting for the bias resistor. 00 is maximum, 11 is minimum.
Prefered setting will be provided by Dialog
0x2
0x0
XTAL32K_ENABLE
Enables the 32kHz XTAL oscillator
Table 186: CLK_16M_REG (0x50000022)
Bit
Mode Symbol
Description
Reset
14
R/W
XTAL16_HPASS_FLT enables high pass filter
0x0
_EN
13
R/W
XTAL16_SPIKE_FLT
_BYPASS
bypasses spikefilter
0x0
12:10
7:5
R/W
R/W
XTAL16_AMP_TRIM
XTAL16_CUR_SET
sets xtal amplitude, 0 is minimum, 101 is maximum
0x3
0x0
start-up current for the 16MHz XTAL oscillator. 000 is mini-
mum, 110 is maximum.
4:1
0
R/W
R/W
RC16M_TRIM
0000 = lowest frequency
1111 = highest frequency
0x0
0x0
RC16M_ENABLE
Enables the 16MHz RC oscillator
Table 187: CLK_RCX20K_REG (0x50000024)
Bit
11
Mode Symbol
Description
Reset
R/W
R/W
R/W
R/W
R/W
RCX20K_ENABLE
Enable the RCX32 oscillator
Extra low frequency
Bias control
0
0
1
7
8
10
RCX20K_LOWF
RCX20K_BIAS
RCX20K_NTC
RCX20K_TRIM
9:8
7:4
3:0
Temperature control
0000 = lowest frequency
0111 = default
1111 = highest frequency
Table 188: BANDGAP_REG (0x50000028)
Bit
Mode Symbol
R/W BYPASS_COLD_BO
OT_DISABLE
Description
Reset
14
0x1 -> Switch to LDO_SUPPLY_USB on vbus_available &
vbus_high & wokenup (SET to 0x1 after boot)
0x0
0x0 -> Switch to LDO_SUPPLY_USB on vbus_available
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Table 188: BANDGAP_REG (0x50000028)
Bit
Mode Symbol
Description
Reset
13:10
R/W
LDO_SLEEP_TRIM
0x4 --> 1120 mV
0x0
0x5 --> 1089 mV
0x6 --> 1058 mV
0x7 --> 1030 mV
0x0 --> 1037 mV
0x1 --> 1005 mV
0x2 --> 978 mV
0x3 --> 946 mV
0x8 --> 952 mV
0x9 --> 918 mV
0xA --> 889 mV
0xB --> 861 mV
0xC --> 862 mV
0xD --> 828 mV
0xE --> 798 mV
0xF --> 770 mV
These values are from simulation and vary over corners
9:5
4:0
R/W
R/W
BGR_ITRIM
BGR_TRIM
Current trimming for bias
Trim register for bandgap
0x0
0x0
Table 189: ANA_STATUS_REG (0x5000002A)
Bit
Mode Symbol
Description
Reset
15
R
COMP_1V8_PA_HIG
VDD1V8P > 1.7V
0x0
H
14
R
COMP_1V8_FLASH_ VDD1V8 > 1.7V
HIGH
0x0
13
12
11
10
R
R
R
R
COMP_V33_HIGH
COMP_VBUS_LOW
COMP_VBUS_HIGH
V33 > 1.7V
0x0
0x0
0x0
0x0
VBUS > 3.4V
VBUS > 4V
LDO_1V8_FLASH_O
K
ldo_vdd1v8 = ok
9
8
7
6
5
R
R
R
R
R
LDO_1V8_PA_OK
LDO_CORE_OK
COMP_VDD_HIGH
BANDGAP_OK
ldo_vdd1v8P = ok
ldo_core = ok
VDD > 1.13V
0x0
0x0
0x1
0x0
0x0
bandgap = ok
LDO_SUPPLY_USB_ ldo_supply_usb = ok
OK
4
R
LDO_SUPPLY_VBAT ldo_supply_vbat =ok
_OK
0x1
3
2
1
0
R
R
R
R
NEWBAT
new battery has been detected
0x0
0x0
0x0
0x0
VBUS_AVAILABLE
COMP_VBAT_OK
LDO_RADIO_OK
vbus is available (vbus > vbat)
vbat > 1.7V
ldo_radio = ok
Table 190: VBUS_IRQ_MASK_REG (0x50000030)
Bit
Mode Symbol
R/W VBUS_IRQ_EN_RIS
Description
Reset
1
Setting this bit to '1' enables VBUS_IRQ generation when
the VBUS starts to ramp above threshold
0x0
E
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Table 190: VBUS_IRQ_MASK_REG (0x50000030)
Bit
Mode Symbol
R/W VBUS_IRQ_EN_FAL
Description
Reset
0
Setting this bit to '1' enables VBUS_IRQ generation when
the VBUS starts to fall below threshold
0x0
L
Table 191: VBUS_IRQ_CLEAR_REG (0x50000032)
Bit
Mode Symbol
R/W VBUS_IRQ_CLEAR
Description
Reset
15:0
Writing any value to this register will reset the VBUS_IRQ
line
0x0
Table 192: BOD_CTRL_REG (0x50000034)
Bit
Mode Symbol
Description
Reset
0x7
10:8
7:0
R/W
-
BOD_VDD_LVL
Reserved
VDD BOD Level; 0=700mV; 1=700mV; 3=800mV; 7=1.05V
Reserved
0x0
Table 193: BOD_CTRL2_REG (0x50000036)
Bit
5
Mode Symbol
Description
Reset
0x0
R/W
R/W
BOD_VBAT_EN
VBAT BOD Enable
1V8 Flash BOD Enable
4
BOD_1V8_FLASH_E
N
0x0
3
2
1
0
R/W
R/W
R/W
R/W
BOD_1V8_PA_EN
BOD_V33_EN
1V8 PA BOD Enable
0x0
0x0
0x0
0x0
V33 BOD Enable
BOD_VDD_EN
BOD_RESET_EN
VDD BOD Enable
Generate a chip reset on BOD event
Table 194: BOD_STATUS_REG (0x50000038)
Bit
4
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
BOD_VBAT_LOW
Indicates VBAT > VBAT_Trigger
Indicates V33 > V33_Trigger
Indicates V18_Flash > V18_Flash_Trigger
3
BOD_V33_LOW
0x0
2
BOD_1V8_FLASH_L
OW
0x0
1
0
R/W
R/W
BOD_1V8_PA_LOW
BOD_VDD_LOW
Indicates V18_PA > V18_PA_Trigger
Indicates VDD > VDD_Trigger
0x0
0x0
Table 195: LDO_CTRL1_REG (0x5000003A)
Bit
Mode Symbol
Description
Reset
14
R/W
LDO_RADIO_ENABL Enables (1) or disables (0) LDO_RADIO (V14)
0x0
E
For fast XTAL startup, this bit may be kept to '1' during deep
sleep. The LDO is switched off automatically when in deep
sleep, and enabled when waking up.
13:11
R/W
LDO_RADIO_SETVD Sets the output voltage of LDO_RADIO
0x0
D
000 = 1.30 V
001 = 1.35 V
010 = 1.40 V
011 = 1.45 V
1XX = 1.50 V
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Table 195: LDO_CTRL1_REG (0x5000003A)
Bit
Mode Symbol
Description
Reset
10:8
R/W
LDO_CORE_SETVD
D
Sets the output voltage of LDO_CORE
000 = 1.20 V
0x0
001 = 1.15 V
010 = 1.10 V
011 = 1.05 V
1XX = 1.32 V
7:6
5:4
3:2
1:0
R/W
R/W
R/W
R/W
LDO_SUPPLY_USB_ Sets the output voltage of LDO_SUPPLY_USB
0x1
0x1
0x1
0x3
LEVEL
00 = 2.40 V
01 = 3.30 V
10 = 3.45 V
11 = 3.60 V
LDO_SUPPLY_VBAT Sets the output voltage of LDO_SUPPLY_VBAT
_LEVEL
00 = 2.40 V
01 = 3.30 V
10 = 3.45 V
11 = 3.60 V
LDO_VBAT_RET_LE
VEL
Sets the output voltage of LDO_VBAT_RET
00 = 2.40 V
01 = 3.30 V
10 = 3.45 V
11 = 3.60 V
LDO_CORE_CURLI
M
Sets the current limit of LDO_CORE
00 = Current limiter disabled
01 = 8 mA
10 = 60 mA
11 = 80 mA
Table 196: LDO_CTRL2_REG (0x5000003C)
Bit
Mode Symbol
Description
Reset
6
R/W
R/W
R/W
LDO_1V8_PA_RET_
DISABLE
Disables (1) or enables (0) LDO_1V8_PA_RET
0x0
5
4
LDO_1V8_FLASH_R
ET_DISABLE
Disables (1) or enables (0) LDO_1V8_FLASH_RET
Disables (1) or enables (0) LDO_VBAT_RET
0x0
0x0
LDO_VBAT_RET_DI
SABLE
3
2
R/W
R/W
LDO_1V8_PA_ON
Enables (1) or disables (0) LDO_1V8_PA
0x1
0x1
LDO_1V8_FLASH_O
N
Enables (1) or disables (0) LDO_1V8_FLASH
1
0
R/W
R/W
LDO_3V3_ON
Enables (1) or disables (0) LDO_SUPPLY_VBAT and
LDO_SUPPLY_USB
0x1
0x1
LDO_1V2_ON
Enables (1) or disables (0) LDO_CORE
Table 197: SLEEP_TIMER_REG (0x5000003E)
Bit
Mode Symbol
R/W SLEEP_TIMER
Description
Reset
15:0
Defines the amount of ticks of the sleep clock between ena-
bling the bandgap for re-charging the retention LDOs. This
value depends on the load and should be calibrated on a per
application basis.If set to 0, no recharging cycle will happen
at all.
0x0
Keep this value to 0 (no recharging) when using the clock-
less sleep.
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Table 198: XTALRDY_CTRL_REG (0x50000050)
Bit
Mode Symbol
R/W XTALRDY_CNT
Description
Reset
7:0
Number of LP cycles between the crystal is enabled, and the
XTALRDY_IRQ is fired.
0x0
0x00: no interrupt
37.7 DCDC REGISTER FILE
Table 199: Register map DCDC
Address
Port
Description
0x50000082
0x50000084
0x50000086
0x50000088
0x5000008A
0x5000008C
0x5000008E
0x50000090
0x50000092
0x50000094
0x50000096
0x50000098
0x5000009A
0x5000009C
0x5000009E
0x500000A0
0x500000A2
0x500000A4
0x500000A6
0x500000A8
0x500000AA
0x500000AC
0x500000AE
0x500000B0
0x500000B2
0x500000B4
0x500000B6
0x500000B8
DCDC_CTRL_0_REG
DCDC_CTRL_1_REG
DCDC_CTRL_2_REG
DCDC_V14_0_REG
DCDC_V14_1_REG
DCDC_V18_0_REG
DCDC_V18_1_REG
DCDC_VDD_0_REG
DCDC_VDD_1_REG
DCDC_V18P_0_REG
DCDC_V18P_1_REG
DCDC_RET_0_REG
DCDC_RET_1_REG
DCDC_TRIM_REG
DCDC First Control Register
DCDC Second Control Register
DCDC Third Control Register
DCDC V14 First Control Register
DCDC V14 Second Control Register
DCDC V18 First Control Register
DCDC V18 Second Control Register
DCDC VDD First Control Register
DCDC VDD Second Control Register
DCDC VPA First Control Register
DCDC VPA Second Control Register
DCDC First Retention Mode Register
DCDC Second Retention Mode Register
DCDC Comparator Trim Register
DCDC Test Register
DCDC_TEST_0_REG
DCDC_TEST_1_REG
DCDC_STATUS_0_REG
DCDC_STATUS_1_REG
DCDC_STATUS_2_REG
DCDC_STATUS_3_REG
DCDC_STATUS_4_REG
DCDC_TRIM_0_REG
DCDC_TRIM_1_REG
DCDC_TRIM_2_REG
DCDC_TRIM_3_REG
DCDC Test Register
DCDC First Status Register
DCDC Second Status Register
DCDC Third Status Register
DCDC Fourth Status Register
DCDC Fifth Status Register
DCDC V14 Comparator Trim Register
DCDC V18 Comparator Trim Register
DCDC VDD Comparator Trim Register
DCDC VPA Comparator Trim Register
DCDC_IRQ_STATUS_REG
DCDC_IRQ_CLEAR_REG
DCDC_IRQ_MASK_REG
DCDC Interrupt Status Register
DCDC Interrupt Clear Register
DCDC Interrupt Clear Register
Table 200: DCDC_CTRL_0_REG (0x50000082)
Bit
Mode Symbol
Description
Reset
14
R/W
DCDC_FAST_START Set current limit to maximum during initial startup
UP
0x0
13
R/W
DCDC_BROWNOUT
_LV_MODE
Switches to low voltage settings when battery voltage drops
below 2.5 V
0x1
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Table 200: DCDC_CTRL_0_REG (0x50000082)
Bit
Mode Symbol
Description
Reset
12:11
R/W
DCDC_IDLE_CLK_D
IV
Idle Clock Divider
00 = 2
0x1
01 = 4
10 = 8
11 = 16
10:3
R/W
DCDC_PRIORITY
Charge priority register (4x 2 bit ID)
Charge sequence is [1:0] > [3:2] > [5:4] > [7:6]
ID[V14] = 00
0xE4
ID[V18] = 01
ID[VDD] = 10
ID[V18P] = 11
2
R/W
R/W
DCDC_FW_ENABLE
DCDC_MODE
Freewheel switch enable
0x1
0x0
1:0
DCDC converter mode
00 = Disabled
01 = Active
10 = Sleep mode
11 = Disabled
Table 201: DCDC_CTRL_1_REG (0x50000084)
Bit
Mode Symbol
Description
Reset
15:11
R/W
R/W
DCDC_STARTUP_D
ELAY
Delay between turning bias on and converter becoming
active
0 - 31 us, 1 us step size
0xA
10:5
4:0
DCDC_GLOBAL_MA
X_IDLE_TIME
Global maximum idle time
The current limit of any output that is idle for this long will be
downramped faster than normal
0x20
0x10
0 - 7875 ns, 125 ns step size
R/W
DCDC_TIMEOUT
P and N switch timeout, if switch is closed longer than this a
timeout is generated and the FSM is forced to the next state
0 - 1937.5 ns, 62.5 ns step size
Table 202: DCDC_CTRL_2_REG (0x50000086)
Bit
Mode Symbol
Description
Reset
15:12
R/W
R/W
R/W
DCDC_TIMEOUT_IR
Q_TRIG
Number of timeout events before timeout interrupt is gener-
ated
0x8
11:8
7:6
DCDC_TIMEOUT_IR
Q_RES
Number of successive non-timed out charge events required
to clear timeout event counter
0x8
0x0
DCDC_TUNE
Trim current sensing circuitry
00 = +0 %
01 = +4 %
10 = +8 %
11 = +12 %
5:3
2:0
R/W
R/W
DCDC_LSSUP_TRI
M
Trim low side supply voltage
V = 2 V + 100 mV * N
0x5
0x5
DCDC_HSGND_TRI
M
Trim high side ground
V = V
- (2.2 V + 200 mV * N)
BAT
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Table 203: DCDC_V14_0_REG (0x50000088)
Bit
Mode Symbol
Description
DCDC_V14_FAST_R V14 output fast current ramping (improves response time at
AMPING the cost of more ripple)
DCDC_V14_VOLTAG V14 output voltage
Reset
15
R/W
R/W
R/W
0x1
0x8
0xD
14:10
9:5
E
V = 1.2 V + 25 mV * N
DCDC_V14_CUR_LI
M_MAX_HV
V14 output maximum current limit (high battery voltage
mode)
I = 30 mA * (1 + N)
4:0
R/W
DCDC_V14_CUR_LI
M_MIN
V14 output minimum current limit
I = 30 mA * (1 + N)
0x4
Table 204: DCDC_V14_1_REG (0x5000008A)
Bit
Mode Symbol
Description
Reset
15
R/W
R/W
DCDC_V14_ENABL
E_HV
V14 output enable (high battery voltage mode)
0 = Disabled
1 = Enabled
0x1
14
DCDC_V14_ENABL
E_LV
V14 output enable (low battery voltage mode)
0 = Disabled
1 = Enabled
0x1
13:10
9:5
R/W
R/W
DCDC_V14_CUR_LI
M_MAX_LV
V14 output maximum current limit low battery voltage mode) 0x6
I = 30 mA * (1 + N)
DCDC_V14_IDLE_H
YST
V14 output idle time hysteresis
0x4
0 - 3875 ns, 125 ns step size
IDLE_MAX = IDLE_MIN + IDLE_HYST
Maximum idle time before decreasing CUR_LIM
4:0
R/W
DCDC_V14_IDLE_MI V14 output minimum idle time
0x10
N
0 - 3875 ns, 125 ns step size
Minimum idle time, CUR_LIM is increased if this limit is not
reached
Table 205: DCDC_V18_0_REG (0x5000008C)
Bit
Mode Symbol
Description
DCDC_V18_FAST_R V18 output fast current ramping (improves response time at
AMPING the cost of more ripple)
DCDC_V18_VOLTAG V18 output voltage
Reset
15
R/W
R/W
R/W
0x1
14:10
9:5
0x18
0x1F
E
V = 1.2 V + 25 mV * N
DCDC_V18_CUR_LI
M_MAX_HV
V18 output maximum current limit (high battery voltage
mode)
I = 30 mA * (1 + N)
4:0
R/W
DCDC_V18_CUR_LI
M_MIN
V18 output minimum current limit
I = 30 mA * (1 + N)
0x4
Table 206: DCDC_V18_1_REG (0x5000008E)
Bit
Mode Symbol
R/W DCDC_V18_ENABL
E_HV
Description
Reset
15
V18 output enable (high battery voltage mode)
0 = Disabled
1 = Enabled
0x1
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Table 206: DCDC_V18_1_REG (0x5000008E)
Bit
Mode Symbol
Description
Reset
0x0
14
R/W
DCDC_V18_ENABL
V18 output enable (low battery voltage mode)
E_LV
0 = Disabled
1 = Enabled
13:10
9:5
R/W
R/W
DCDC_V18_CUR_LI
M_MAX_LV
V18 output maximum current limit low battery voltage mode) 0xF
I = 30 mA * (1 + N)
DCDC_V18_IDLE_H
YST
V18 output idle time hysteresis
0x4
0 - 3875 ns, 125 ns step size
IDLE_MAX = IDLE_MIN + IDLE_HYST
Maximum idle time before decreasing CUR_LIM
4:0
R/W
DCDC_V18_IDLE_MI V18 output minimum idle time
0x10
N
0 - 3875 ns, 125 ns step size
Minimum idle time, CUR_LIM is increased if this limit is not
reached
Table 207: DCDC_VDD_0_REG (0x50000090)
Bit
Mode Symbol
Description
Reset
15
R/W
R/W
R/W
DCDC_VDD_FAST_
RAMPING
VDD output fast current ramping (improves response time at
the cost of more ripple)
0x1
14:10
9:5
DCDC_VDD_VOLTA
GE
VDD output voltage
V = 0.8 V + 25 mV * N
0x10
0x18
DCDC_VDD_CUR_LI VDD output maximum current limit (high battery voltage
M_MAX_HV
mode)
I = 30 mA * (1 + N)
4:0
R/W
DCDC_VDD_CUR_LI VDD output minimum current limit
M_MIN I = 30 mA * (1 + N)
0x4
Table 208: DCDC_VDD_1_REG (0x50000092)
Bit
Mode Symbol
Description
Reset
15
R/W
R/W
DCDC_VDD_ENABL
E_HV
VDD output enable (high battery voltage mode)
0 = Disabled
1 = Enabled
0x1
14
DCDC_VDD_ENABL
E_LV
VDD output enable (low battery voltage mode)
0 = Disabled
1 = Enabled
0x1
13:10
9:5
R/W
R/W
DCDC_VDD_CUR_LI VDD output maximum current limit low battery voltage mode) 0xB
M_MAX_LV I = 30 mA * (1 + N)
DCDC_VDD_IDLE_H VDD output idle time hysteresis
0x4
YST
0 - 3875 ns, 125 ns step size
IDLE_MAX = IDLE_MIN + IDLE_HYST
Maximum idle time before decreasing CUR_LIM
4:0
R/W
DCDC_VDD_IDLE_
MIN
VDD output minimum idle time
0 - 3875 ns, 125 ns step size
Minimum idle time, CUR_LIM is increased if this limit is not
reached
0x10
Table 209: DCDC_V18P_0_REG (0x50000094)
Bit
Mode Symbol
R/W DCDC_V18P_FAST_
RAMPING
Description
Reset
15
V18P output fast current ramping (improves response time
at the cost of more ripple)
0x1
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Table 209: DCDC_V18P_0_REG (0x50000094)
Bit
Mode Symbol
Description
Reset
14:10
R/W
DCDC_V18P_VOLTA V18P output voltage
0x18
GE
V = 1.2 V + 25 mV * N
9:5
4:0
R/W
DCDC_V18P_CUR_
LIM_MAX_HV
V18P output maximum current limit (high battery voltage
mode)
I = 30 mA * (1 + N)
0x1F
R/W
DCDC_V18P_CUR_
LIM_MIN
V18P output minimum current limit
I = 30 mA * (1 + N)
0x4
Table 210: DCDC_V18P_1_REG (0x50000096)
Bit
Mode Symbol
Description
Reset
15
R/W
R/W
R/W
R/W
DCDC_V18P_ENAB
LE_HV
V18P output enable (high battery voltage mode)
0 = Disabled
1 = Enabled
0x1
14
DCDC_V18P_ENAB
LE_LV
V18P output enable (low battery voltage mode)
0 = Disabled
1 = Enabled
0x0
0xF
0x4
13:10
9:5
DCDC_V18P_CUR_
LIM_MAX_LV
V18P output maximum current limit low battery voltage
mode)
I = 30 mA * (1 + N)
DCDC_V18P_IDLE_
HYST
V18P output idle time hysteresis
0 - 3875 ns, 125 ns step size
IDLE_MAX = IDLE_MIN + IDLE_HYST
Maximum idle time before decreasing CUR_LIM
4:0
R/W
DCDC_V18P_IDLE_
MIN
V18P output minimum idle time
0 - 3875 ns, 125 ns step size
Minimum idle time, CUR_LIM is increased if this limit is not
reached
0x10
Table 211: DCDC_RET_0_REG (0x50000098)
Bit
Mode Symbol
Description
Reset
15:13
R/W
R/W
R/W
R/W
DCDC_V18P_RET_
CYCLES
Charge cycles for V18P output in sleep mode
Cycles = 1 + 2 * N
0x5
12:8
7:5
DCDC_V18P_CUR_
LIM_RET
V18P output sleep mode current limit
I = 30 mA * (1 + N)
0xA
0x5
0x6
DCDC_VDD_RET_C
YCLES
Charge cycles for VDD output in sleep mode
Cycles = 1 + 2 * N
4:0
DCDC_VDD_CUR_LI VDD output sleep mode current limit
M_RET I = 30 mA * (1 + N)
Table 212: DCDC_RET_1_REG (0x5000009A)
Bit
Mode Symbol
Description
Reset
15:13
R/W
R/W
R/W
R/W
DCDC_V18_RET_C
YCLES
Charge cycles for V18 output in sleep mode
Cycles = 1 + 2 * N
0x5
12:8
7:5
DCDC_V18_CUR_LI
M_RET
V18 output sleep mode current limit
I = 30 mA * (1 + N)
0xA
0x2
0x6
DCDC_V14_RET_C
YCLES
Charge cycles for V14 output in sleep mode
Cycles = 1 + 2 * N
4:0
DCDC_V14_CUR_LI
M_RET
V14 output sleep mode current limit
I = 30 mA * (1 + N)
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Table 213: DCDC_TRIM_REG (0x5000009C)
Bit
Mode Symbol
Description
Reset
13
R/W
R/W
DCDC_P_COMP_M
AN_TRIM
Trim mode for P side comparator
0 = Automatic
1 = Manual
0x0
12:7
DCDC_P_COMP_TR Manual trim value for P side comparator
0x0
IM
Signed magnitude representation
011111 = +47 mV
000000 = 100000 = +16 mV
111111 = -15 mV
6
R/W
R/W
DCDC_N_COMP_M
AN_TRIM
Trim mode for N side comparator
0 = Automatic
1 = Manual
0x0
0x0
5:0
DCDC_N_COMP_TR Manual trim value for N side comparator
IM
Signed magnitude representation
011111 = +13 mV
000000 = 100000 = -22 mV
111111 = -56 mV
Table 214: DCDC_TEST_0_REG (0x5000009E)
Bit
Mode Symbol
Description
Reset
15
R/W
R/W
R/W
DCDC_FORCE_CO
MP_CLK
Disables automatic comparator clock, clock lines values
based on DCDC_COMP_CLK
0x0
14
DCDC_FORCE_CUR Force output current setting
RENT
0x0
0x0
13:11
DCDC_OUTPUT_M
ONITOR
Output monitor switch (connect to ADC)
000 = None
001 = V14
010 = V18
011 = VDD
100 = VPA
101 = None
110 = None
111 = None
10:8
R/W
DCDC_ANA_TEST
Analog test bus
000 = None
0x0
001 = High side ground
010 = Low side supply
011 = 1.2 V buffer output
100 = None
101 = None
110 = None
111 = None
7
6
R/W
R/W
DCDC_FORCE_IDL
E
Force idle mode
0x0
0x0
DCDC_FORCE_V18
P
Force V18P switch on
5
4
3
2
1
R/W
R/W
R/W
R/W
R/W
DCDC_FORCE_VDD Force VDD switch on
0x0
0x0
0x0
0x0
0x0
DCDC_FORCE_V18
DCDC_FORCE_V14
DCDC_FORCE_FW
Force V18 switch on
Force V14 switch on
Force FW switch on
Force N switch on
DCDC_FORCE_NS
W
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Table 214: DCDC_TEST_0_REG (0x5000009E)
Bit
Mode Symbol
R/W DCDC_FORCE_PS
Description
Reset
0
Force P switch on
0x0
W
Table 215: DCDC_TEST_1_REG (0x500000A0)
Bit
Mode Symbol
Description
Reset
12:9
R/W
DCDC_COMP_CLK
Forced clock values for [COMP_VPA, COMP_VDD,
COMP_V18, COMP_V14] (requires
0x0
DCDC_FORCE_COMP_CLK = 1)
8:4
3:0
R/W
R/W
DCDC_TEST_CURR
ENT
Current limit setting when current limit is forced
0x0
0x0
DCDC_TEST_REG
Determines which register appears on the testbus
0x0 = DCDC_NONE
0x1 = DCDC_STATUS_0
0x2 = DCDC_STATUS_1
0x3 = DCDC_STATUS_2
0x4 = DCDC_STATUS_3
0x5 = DCDC_STATUS_4
0x6 = DCDC_TRIM_0
0x7 = DCDC_TRIM_1
0x8 = DCDC_TRIM_2
0x9 = DCDC_TRIM_3
0xA-0xF = DCDC_NONE
Table 216: DCDC_STATUS_0_REG (0x500000A2)
Bit
Mode Symbol
Description
Reset
11:9
R
R
R
R
DCDC_CHARGE_RE Charge register position 3
G_3
0x0
8:6
5:3
2:0
DCDC_CHARGE_RE Charge register position 2
G_2
0x0
0x0
0x0
DCDC_CHARGE_RE Charge register position 1
G_1
DCDC_CHARGE_RE Charge register position 0
G_0
Table 217: DCDC_STATUS_1_REG (0x500000A4)
Bit
Mode Symbol
Description
Reset
11
R
R
R
R
R
DCDC_V18P_AVAIL
ABLE
Indicates whether V18P is available
Requires that converter is enabled, output is enabled and
V_OK and V_NOK have both occured
0x0
10
9
DCDC_VDD_AVAILA
BLE
Indicates whether VDD is available
Requires that converter is enabled, output is enabled and
V_OK and V_NOK have both occured
0x0
0x0
0x0
DCDC_V18_AVAILA
BLE
Indicates whether V18 is available
Requires that converter is enabled, output is enabled and
V_OK and V_NOK have both occured
8
DCDC_V14_AVAILA
BLE
Indicates whether V14 is available
Requires that converter is enabled, output is enabled and
V_OK and V_NOK have both occured
7
DCDC_V18P_OK
OK output of V18P comparator
0x0
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Table 217: DCDC_STATUS_1_REG (0x500000A4)
Bit
6
Mode Symbol
Description
Reset
R
R
R
R
R
R
R
DCDC_VDD_OK
OK output of VDD comparator
OK output of V18 comparator
OK output of V14 comparator
NOK output of V18P comparator
NOK output of VDD comparator
NOK output of V18 comparator
NOK output of V14 comparator
0x0
0x0
0x0
0x0
0x0
0x0
0x0
5
DCDC_V18_OK
DCDC_V14_OK
DCDC_V18P_NOK
DCDC_VDD_NOK
DCDC_V18_NOK
DCDC_V14_NOK
4
3
2
1
0
Table 218: DCDC_STATUS_2_REG (0x500000A6)
Bit
Mode Symbol
Description
Reset
11
R
R
R
R
DCDC_V18P_SW_S
TATE
DCDC state machine V18P output
0x0
10
9
DCDC_VDD_SW_ST DCDC state machine VDD output
ATE
0x0
0x0
0x0
DCDC_V18_SW_ST
ATE
DCDC state machine V18 output
8
DCDC_V14_SW_ST
ATE
DCDC state machine V14 output
7
6
5
4
3
2
1
0
R
R
R
R
R
R
R
R
DCDC_NSW_STATE
DCDC_PSW_STATE
DCDC_P_COMP_P
DCDC_P_COMP_N
DCDC_N_COMP_P
DCDC_N_COMP_N
DCDC_P_COMP
DCDC state machine NSW output
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
DCDC state machine PSW output
DCDC P side dynamic comparator P output
DCDC P side dynamic comparator N output
DCDC N side dynamic comparator P output
DCDC N side dynamic comparator N output
DCDC P side continuous time comparator output
DCDC N side continuous time comparator output
DCDC_N_COMP
Table 219: DCDC_STATUS_3_REG (0x500000A8)
Bit
10
Mode Symbol
Description
Reset
0x0
R
R
R
DCDC_LV_MODE
Indicates if the converter is in low battery voltage mode
Actual V18P current limit
9:5
4:0
DCDC_I_LIM_V18P
DCDC_I_LIM_VDD
0x4
Actual VDD current limit
0x4
Table 220: DCDC_STATUS_4_REG (0x500000AA)
Bit
9:5
4:0
Mode Symbol
Description
Reset
0x4
R
R
DCDC_I_LIM_V18
DCDC_I_LIM_V14
Actual V18 current limit
Actual V14 current limit
0x4
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Table 221: DCDC_TRIM_0_REG (0x500000AC)
Bit
Mode Symbol
Description
Reset
11:6
R
R
DCDC_V14_TRIM_P
P comparator trim value when V14 is active
Signed magnitude representation
011111 = +47 mV
000000 = 100000 = +16 mV
111111 = -15 mV
0x0
5:0
DCDC_V14_TRIM_N
N comparator trim value when V14 is active
Signed magnitude representation
011111 = +13 mV
0x0
000000 = 100000 = -22 mV
111111 = -56 mV
Table 222: DCDC_TRIM_1_REG (0x500000AE)
Bit
Mode Symbol
Description
Reset
11:6
R
DCDC_V18_TRIM_P
P comparator trim value when V18 is active
Signed magnitude representation
011111 = +47 mV
0x0
000000 = 100000 = +16 mV
111111 = -15 mV
5:0
R
DCDC_V18_TRIM_N
N comparator trim value when V18 is active
Signed magnitude representation
011111 = +13 mV
0x0
000000 = 100000 = -22 mV
111111 = -56 mV
Table 223: DCDC_TRIM_2_REG (0x500000B0)
Bit
Mode Symbol
Description
Reset
11:6
R
DCDC_VDD_TRIM_
P
P comparator trim value when VDD is active
Signed magnitude representation
011111 = +47 mV
0x0
000000 = 100000 = +16 mV
111111 = -15 mV
5:0
R
DCDC_VDD_TRIM_
N
N comparator trim value when VDD is active
Signed magnitude representation
011111 = +13 mV
0x0
000000 = 100000 = -22 mV
111111 = -56 mV
Table 224: DCDC_TRIM_3_REG (0x500000B2)
Bit
Mode Symbol
Description
Reset
11:6
R
DCDC_V18P_TRIM_
P
P comparator trim value when V18P is active
Signed magnitude representation
011111 = +47 mV
0x0
000000 = 100000 = +16 mV
111111 = -15 mV
5:0
R
DCDC_V18P_TRIM_
N
N comparator trim value when V18P is active
Signed magnitude representation
011111 = +13 mV
0x0
000000 = 100000 = -22 mV
111111 = -56 mV
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Table 225: DCDC_IRQ_STATUS_REG (0x500000B4)
Bit
Mode Symbol
Description
Reset
4
R
R
R
R
R
DCDC_BROWN_OU
T_IRQ_STATUS
Brown out detector triggered (battery voltage below 2.5 V)
0x0
0x0
0x0
0x0
0x0
3
2
1
0
DCDC_V18P_TIMEO Timeout occured on V18P output
UT_IRQ_STATUS
DCDC_VDD_TIMEO
UT_IRQ_STATUS
Timeout occured on VDD output
DCDC_V18_TIMEOU Timeout occured on V18 output
T_IRQ_STATUS
DCDC_V14_TIMEOU Timeout occured on V14 output
T_IRQ_STATUS
Table 226: DCDC_IRQ_CLEAR_REG (0x500000B6)
Bit
Mode Symbol
Description
Reset
4
R0/W
R0/W
R0/W
R0/W
R0/W
DCDC_BROWN_OU
T_IRQ_CLEAR
Clear brown out interrupt
0x0
3
2
1
0
DCDC_V18P_TIMEO Clear V18P timeout interrupt
UT_IRQ_CLEAR
0x0
0x0
0x0
0x0
DCDC_VDD_TIMEO
UT_IRQ_CLEAR
Clear VDD timeout interrupt
DCDC_V18_TIMEOU Clear V18 timeout interrupt
T_IRQ_CLEAR
DCDC_V14_TIMEOU Clear V14 timeout interrupt
T_IRQ_CLEAR
Table 227: DCDC_IRQ_MASK_REG (0x500000B8)
Bit
Mode Symbol
Description
Reset
4
R/W
R/W
R/W
R/W
R/W
DCDC_BROWN_OU
T_IRQ_MASK
Mask brown out interrupt
0x0
3
2
1
0
DCDC_V18P_TIMEO Mask V18P timeout interrupt
UT_IRQ_MASK
0x0
0x0
0x0
0x0
DCDC_VDD_TIMEO
UT_IRQ_MASK
Mask VDD timeout interrupt
DCDC_V18_TIMEOU Mask V18 timeout interrupt
T_IRQ_MASK
DCDC_V14_TIMEOU Mask V14 timeout interrupt
T_IRQ_MASK
37.8 WAKEUP REGISTER FILE
Table 228: Register map WakeUp
Address
Port
Description
0x50000100
0x50000102
0x50000104
0x50000106
0x50000108
WKUP_CTRL_REG
WKUP_COMPARE_REG
WKUP_RESET_IRQ_REG
WKUP_COUNTER_REG
WKUP_RESET_CNTR_REG
Control register for the wakeup counter
Number of events before wakeup interrupt
Reset wakeup interrupt
Actual number of events of the wakeup counter
Reset the event counter
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Table 228: Register map WakeUp
Address
Port
Description
0x5000010A
WKUP_SELECT_P0_REG
select which inputs from P0 port can trigger wkup
counter
0x5000010C
0x5000010E
0x50000110
0x50000112
WKUP_SELECT_P1_REG
WKUP_SELECT_P2_REG
WKUP_SELECT_P3_REG
WKUP_SELECT_P4_REG
select which inputs from P1 port can trigger wkup
counter
select which inputs from P2 port can trigger wkup
counter
select which inputs from P3 port can trigger wkup
counter
select which inputs from P3 port can trigger wkup
counter
0x50000114
0x50000116
0x50000118
0x5000011A
0x5000011C
WKUP_POL_P0_REG
WKUP_POL_P1_REG
WKUP_POL_P2_REG
WKUP_POL_P3_REG
WKUP_POL_P4_REG
select the sesitivity polarity for each P0 input
select the sesitivity polarity for each P1 input
select the sesitivity polarity for each P2 input
select the sesitivity polarity for each P3 input
select the sesitivity polarity for each P3 input
Table 229: WKUP_CTRL_REG (0x50000100)
Bit
15:8
7
Mode Symbol
Description
Reset
-
-
Reserved
0x0
R/W
WKUP_ENABLE_IR
Q
0: no interrupt will be enabled
1: if the event counter reaches the value set by
WKUP_COMPARE_REG an IRQ will be generated
0x0
6
R/W
R/W
WKUP_SFT_KEYHIT 0 = no effect
0x0
1 = emulate key hit. The event counter will increment by 1
(after debouncing if enabled). First make this bit 0 before any
new key hit can be sensed.
5:0
WKUP_DEB_VALUE
Keyboard debounce time. If set to 0, no debouncing will be
done.
0x0
Debounce time: N*1 ms. N =1..63
Keyboard Debounce Time
Table 230: WKUP_COMPARE_REG (0x50000102)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R/W
COMPARE
The number of events that have to be counted before the
wakeup interrupt will be given
0x0
Table 231: WKUP_RESET_IRQ_REG (0x50000104)
Bit
Mode Symbol
WKUP_IRQ_RST
Description
Reset
15:0
W
writing any value to this register will reset the interrupt. read- 0x0
ing always returns 0.
Table 232: WKUP_COUNTER_REG (0x50000106)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 232: WKUP_COUNTER_REG (0x50000106)
Bit
Mode Symbol
EVENT_VALUE
Description
Reset
7:0
R
This value represents the number of events that have been
counted so far. It will be reset by resetting the interrupt.
0x0
Table 233: WKUP_RESET_CNTR_REG (0x50000108)
Bit
Mode Symbol
WKUP_CNTR_RST
Description
Reset
15:0
W
writing any value to this register will reset the event counter
0x0
Table 234: WKUP_SELECT_P0_REG (0x5000010A)
Bit
Mode Symbol
R/W WKUP_SELECT_P0
Description
Reset
7:0
0: input P0x is not enabled for wakeup event counter
1: input P0x is enabled for wakeup event counter
0x0
Table 235: WKUP_SELECT_P1_REG (0x5000010C)
Bit
Mode Symbol
R/W WKUP_SELECT_P1
Description
Reset
7:0
0: input P1x is not enabled for wakeup event counter
1: input P1x is enabled for wakeup event counter
0x0
Table 236: WKUP_SELECT_P2_REG (0x5000010E)
Bit
Mode Symbol
R/W WKUP_SELECT_P2
Description
Reset
4:0
0: input P2x is not enabled for wakeup event counter
1: input P2x is enabled for wakeup event counter
0x0
Table 237: WKUP_SELECT_P3_REG (0x50000110)
Bit
Mode Symbol
R/W WKUP_SELECT_P3
Description
Reset
7:0
0: input P3x is not enabled for wakeup event counter
1: input P3x is enabled for wakeup event counter
0x0
Table 238: WKUP_SELECT_P4_REG (0x50000112)
Bit
Mode Symbol
R/W WKUP_SELECT_P4
Description
Reset
7:0
0: input P4x is not enabled for wakeup event counter
1: input P4x is enabled for wakeup event counter
0x0
Table 239: WKUP_POL_P0_REG (0x50000114)
Bit
Mode Symbol
R/W WKUP_POL_P0
Description
Reset
7:0
0: enabled input P0x will increment the event counter if that
input goes high
0x0
1: enabled input P0x will increment the event counter if that
input goes low
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Table 240: WKUP_POL_P1_REG (0x50000116)
Bit
Mode Symbol
R/W WKUP_POL_P1
Description
Reset
7:0
0: enabled input P1x will increment the event counter if that
input goes high
0x0
1: enabled input P1x will increment the event counter if that
input goes low
Table 241: WKUP_POL_P2_REG (0x50000118)
Bit
Mode Symbol
R/W WKUP_POL_P2
Description
Reset
4:0
0: enabled input P2x will increment the event counter if that
input goes high
0x0
1: enabled input P2x will increment the event counter if that
input goes low
Table 242: WKUP_POL_P3_REG (0x5000011A)
Bit
Mode Symbol
R/W WKUP_POL_P3
Description
Reset
7:0
0: enabled input P3x will increment the event counter if that
input goes high
0x0
1: enabled input P3x will increment the event counter if that
input goes low
Table 243: WKUP_POL_P4_REG (0x5000011C)
Bit
Mode Symbol
R/W WKUP_POL_P4
Description
Reset
7:0
0: enabled input P4x will increment the event counter if that
input goes high
0x0
1: enabled input P4x will increment the event counter if that
input goes low
37.9 TIMER1 REGISTER FILE
Table 244: Register map Timer1
Address
Port
Description
0x50000200
0x50000202
0x50000204
0x50000206
0x50000208
0x5000020A
0x5000020C
0x5000020E
0x50000210
0x50000212
0x50000214
0x50000216
CAPTIM_CTRL_REG
Capture Timer control register
CAPTIM_TIMER_VAL_REG
CAPTIM_STATUS_REG
Capture Timer counter value
Capture Timer status register
Capture Timer gpio1 selection
Capture Timer gpio2 selection
CAPTIM_GPIO1_CONF_REG
CAPTIM_GPIO2_CONF_REG
CAPTIM_RELOAD_REG
Capture Timer reload value and Delay in shot mode
Capture Timer Shot duration in shot mode
Capture Timer prescaler value
CAPTIM_SHOTWIDTH_REG
CAPTIM_PRESCALER_REG
CAPTIM_CAPTURE_GPIO1_REG
CAPTIM_CAPTURE_GPIO2_REG
CAPTIM_PRESCALER_VAL_REG
CAPTIM_PWM_FREQ_REG
Capture Timer value for event on GPIO1
Capture Timer value for event on GPIO2
Capture Timer interrupt status register
Capture Timer pwm frequency register. PWM5 period
is defined by the reference clock frequency multiplied
by this value.
0x50000218
CAPTIM_PWM_DC_REG
Capture Timer pwm dc register
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Table 245: CAPTIM_CTRL_REG (0x50000200)
Bit
Mode Symbol
Description
Reset
7
R/W
CAPTIM_SYS_CLK_
EN
'1' When Capture Timer use the system clock else use the
clock 32KHz
0x0
6
R/W
CAPTIM_FREE_RU
N_MODE_EN
Only when timer counts up, if it is '1' timer does not zero
when reaches to reload value. it is zero only when it has the
max value.
0x0
5
4
R/W
R/W
CAPTIM_IRQ_EN
'1' When Capture timer IRQ unmask, '0' masked
0x0
0x0
CAPTIM_IN2_EVEN
T_FALL_EN
'1' When Input1 event type is falling edge, '0' rising edge
3
2
1
0
R/W
R/W
R/W
R/W
CAPTIM_IN1_EVEN
T_FALL_EN
'1' When Input2 event type is falling edge, '0' rising edge
'1' when timer counts down, '0' count up
0x0
0x0
0x0
0x0
CAPTIM_COUNT_D
OWN_EN
CAPTIM_ONESHOT
_MODE_EN
'1' Capture Timer in OneShot mode, '0' Capture/Timer mode
'1' Capture Timer enabled, else disabled
CAPTIM_EN
Table 246: CAPTIM_TIMER_VAL_REG (0x50000202)
Bit
Mode Symbol
CAPTIM_TIMER_VA
LUE
Description
Reset
15:0
R
Gives the current timer value
0x0
Table 247: CAPTIM_STATUS_REG (0x50000204)
Bit
Mode Symbol
Description
Reset
3:2
R
CAPTIM_ONESHOT
_PHASE
0 : Wait for event, 1 : Delay phase, 2 : Start Shot, 3 : Shot
phase
0x0
1
0
R
R
CAPTIM_IN2_STATE
CAPTIM_IN1_STATE
Gives the logic level of the IN1
Gives the logic level of the IN2
0x0
0x0
Table 248: CAPTIM_GPIO1_CONF_REG (0x50000206)
Bit
Mode Symbol
R/W CAPTIM_GPIO1_CO
NF
Description
Reset
5:0
Select one of the 37 GPIOs as IN1, Valid value 0-37. 1 for
P00 .. 37 for P47. When 0 Disable input
0x0
Table 249: CAPTIM_GPIO2_CONF_REG (0x50000208)
Bit
Mode Symbol
R/W CAPTIM_GPIO2_CO
NF
Description
Reset
5:0
Select one of the 37 GPIOs as IN2, Valid value 0-37. 1 for
P00 .. 37 for P47. When 0 Disable input
0x0
Table 250: CAPTIM_RELOAD_REG (0x5000020A)
Bit
Mode Symbol
R/W CAPTIM_RELOAD
Description
Reset
15:0
Reload or max value in timer mode, Delay phase duration in
oneshot mode. Actual delay is the register value plus syn-
chronization time (3 clock cycles)
0x0
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Table 251: CAPTIM_SHOTWIDTH_REG (0x5000020C)
Bit
Mode Symbol
Description
Reset
15:0
R/W
CAPTIM_SHOTWIDT Shot phase duration in oneshot mode
H
0x0
Table 252: CAPTIM_PRESCALER_REG (0x5000020E)
Bit
Mode Symbol
R/W CAPTIM_PRESCALE Define the timer count frequncy. Freq = Freq_clock /
(value+1)
Description
Reset
15:0
0x0
R
Table 253: CAPTIM_CAPTURE_GPIO1_REG (0x50000210)
Bit
Mode Symbol
Description
Reset
15:0
R
CAPTIM_CAPTURE_ Gives the Capture time for event on GPIO1
GPIO1
0x0
Table 254: CAPTIM_CAPTURE_GPIO2_REG (0x50000212)
Bit
Mode Symbol
Description
Reset
15:0
R
CAPTIM_CAPTURE_ Gives the Capture time for event on GPIO2
GPIO2
0x0
Table 255: CAPTIM_PRESCALER_VAL_REG (0x50000214)
Bit
Mode Symbol
Description
Reset
15:0
R
CAPTIM_PRESCALE Gives the current prescaler value
R_VAL
0x0
Table 256: CAPTIM_PWM_FREQ_REG (0x50000216)
Bit
Mode Symbol
R/W CAPTIM_PWM_FRE
Description
Reset
15:0
Define the PWM frequency. = prescaler frequency /
(value+1)
0x0
Q
Table 257: CAPTIM_PWM_DC_REG (0x50000218)
Bit
Mode Symbol
R/W CAPTIM_PWM_DC
Description
Reset
15:0
Define the PWM duty cyucle = pwm_dc / ( pwm_freq+1)
0x0
37.10 UART REGISTER FILE
Table 258: Register map UART
Address
Port
Description
0x50001000
0x50001004
0x50001008
0x5000100C
0x50001010
0x50001014
UART_RBR_THR_DLL_REG
UART_IER_DLH_REG
UART_IIR_FCR_REG
UART_LCR_REG
Receive Buffer Register
Interrupt Enable Register
Interrupt Identification Register
Line Control Register
UART_MCR_REG
Modem Control Register
Line Status Register
UART_LSR_REG
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Table 258: Register map UART
Address
Port
Description
0x5000101C
0x5000107C
0x50001088
0x50001090
0x500010A8
0x500010C0
0x500010F4
0x500010F8
0x500010FC
0x50001100
0x50001104
0x50001108
0x5000110C
0x50001110
0x50001114
0x50001118
0x5000111C
0x50001130
0x50001134
0x50001138
0x5000113C
0x50001140
0x50001144
0x50001148
0x5000114C
0x50001150
0x50001154
0x50001158
0x5000115C
0x50001160
0x50001164
0x50001168
0x5000116C
0x50001170
0x5000117C
0x50001180
0x50001184
0x50001188
0x5000118C
0x50001190
0x50001194
0x50001198
0x5000119C
0x500011A0
UART_SCR_REG
Scratchpad Register
UART_USR_REG
UART Status register.
UART_SRR_REG
Software Reset Register.
Shadow Break Control Register
DMA Software Acknowledge
Divisor Latch Fraction Register
Component Parameter Register
Component Version
UART_SBCR_REG
UART_DMASA_REG
UART_DLF_REG
UART_CPR_REG
UART_UCV_REG
UART_CTR_REG
Component Type Register
Receive Buffer Register
Interrupt Enable Register
UART2_RBR_THR_DLL_REG
UART2_IER_DLH_REG
UART2_IIR_FCR_REG
UART2_LCR_REG
Interrupt Identification Register/FIFO Control Register
Line Control Register
UART2_MCR_REG
Modem Control Register
UART2_LSR_REG
Line Status Register
UART2_MSR_REG
Modem Status Register
UART2_SCR_REG
Scratchpad Register
UART2_SRBR_STHR0_REG
UART2_SRBR_STHR1_REG
UART2_SRBR_STHR2_REG
UART2_SRBR_STHR3_REG
UART2_SRBR_STHR4_REG
UART2_SRBR_STHR5_REG
UART2_SRBR_STHR6_REG
UART2_SRBR_STHR7_REG
UART2_SRBR_STHR8_REG
UART2_SRBR_STHR9_REG
UART2_SRBR_STHR10_REG
UART2_SRBR_STHR11_REG
UART2_SRBR_STHR12_REG
UART2_SRBR_STHR13_REG
UART2_SRBR_STHR14_REG
UART2_SRBR_STHR15_REG
UART2_FAR_REG
Shadow Receive/Transmit Buffer Register
Shadow Receive/Transmit Buffer Register
Shadow Receive/Transmit Buffer Register
Shadow Receive/Transmit Buffer Register
Shadow Receive/Transmit Buffer Register
Shadow Receive/Transmit Buffer Register
Shadow Receive/Transmit Buffer Register
Shadow Receive/Transmit Buffer Register
Shadow Receive/Transmit Buffer Register
Shadow Receive/Transmit Buffer Register
Shadow Receive/Transmit Buffer Register
Shadow Receive/Transmit Buffer Register
Shadow Receive/Transmit Buffer Register
Shadow Receive/Transmit Buffer Register
Shadow Receive/Transmit Buffer Register
Shadow Receive/Transmit Buffer Register
FIFO Access Register
UART2_USR_REG
UART Status register.
UART2_TFL_REG
Transmit FIFO Level
UART2_RFL_REG
Receive FIFO Level.
UART2_SRR_REG
Software Reset Register.
UART2_SRTS_REG
Shadow Request to Send
UART2_SBCR_REG
Shadow Break Control Register
Shadow DMA Mode
UART2_SDMAM_REG
UART2_SFE_REG
Shadow FIFO Enable
UART2_SRT_REG
Shadow RCVR Trigger
UART2_STET_REG
Shadow TX Empty Trigger
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Table 258: Register map UART
Address
Port
Description
0x500011A4
0x500011A8
0x500011C0
0x500011F4
0x500011F8
0x500011FC
UART2_HTX_REG
UART2_DMASA_REG
UART2_DLF_REG
UART2_CPR_REG
UART2_UCV_REG
UART2_CTR_REG
Halt TX
DMA Software Acknowledge
Divisor Latch Fraction Register
Component Parameter Register
Component Version
Component Type Register
Table 259: UART_RBR_THR_DLL_REG (0x50001000)
Bit
Mode Symbol
Description
Reset
15:8
7:0
-
-
Reserved
0x0
0x0
R/W
RBR_THR_DLL
Receive Buffer Register: (RBR).
This register contains the data byte received on the serial
input port (sin) in UART mode or the serial infrared input
(sir_in) in infrared mode. The data in this register is valid only
if the Data Ready (DR) bit in the Line status Register (LSR)
is set. The data in the RBR must be read before the next
data arrives, otherwise it will be overwritten, resulting in an
overrun error.
Transmit Holding Register: (THR)
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set.
Writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten.
Divisor Latch (Low): (DLL)
This register makes up the lower 8-bits of a 16-bit, read/
write, Divisor Latch register that contains the baud rate divi-
sor for the UART. This register may only be accessed when
the DLAB bit (LCR[7]) is set. The output baud rate is equal to
the serial clock (sclk) frequency divided by sixteen times the
value of the baud rate divisor, as follows:
baud rate = (serial clock freq) / (16 * divisor)
Note that with the Divisor Latch Registers (DLL and DLH) set
to zero, the baud clock is disabled and no serial communica-
tions will occur. Also, once the DLL is set, at least 8 clock
cycles of the slowest DW_apb_uart clock should be allowed
to pass before transmitting or receiving data.
Divisor Latch (Low): (DLH) (Note: This register is placed in
UART_IER_DLH_REG with offset 0x4)
Upper 8-bits of a 16-bit, read/write, Divisor Latch register
that contains the baud rate divisor for the UART. This regis-
ter may be accessed only when the DLAB bit (LCR[7]) is set.
The output baud rate is equal to the serial clock frequency
divided by sixteen times the value of the baud rate divisor, as
follows:
baud rate = (serial clock freq) / (16 * divisor).
Note that with the Divisor Latch Registers (DLL and DLH) set
to zero, the baud clock is disabled and no serial communica-
tions occur. Also, once the DLH is set, at least 8 clock cycles
of the slowest DW_apb_uart clock should be allowed to pass
before transmitting or receiving data.
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Table 260: UART_IER_DLH_REG (0x50001004)
Bit
15:8
7
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
R/W
PTIME_DLH7
Interrupt Enable Register: PTIME, Programmable THRE
Interrupt Mode Enable. This is used to enable/disable the
generation of THRE Interrupt. 0 = disabled 1 = enabled Divi-
sor Latch (High): Bit[7] of the 8 bit DLH register.
6:4
3
-
-
Reserved
Reserved
0x0
0x0
0x0
-
-
2
R/W
ELSI_DHL2
Interrupt Enable Register: ELSI, Enable Receiver Line Sta-
tus Interrupt. This is used to enable/disable the generation of
Receiver Line Status Interrupt. This is the highest priority
interrupt. 0 = disabled 1 = enabled Divisor Latch (High):
Bit[2] of the 8 bit DLH register.
1
0
R/W
R/W
ETBEI_DLH1
ERBFI_DLH0
Interrupt Enable Register: ETBEI, Enable Transmit Holding
Register Empty Interrupt. This is used to enable/disable the
generation of Transmitter Holding Register Empty Interrupt.
This is the third highest priority interrupt. 0 = disabled 1 =
enabled Divisor Latch (High): Bit[1] of the 8 bit DLH register.
0x0
0x0
Interrupt Enable Register: ERBFI, Enable Received Data
Available Interrupt. This is used to enable/disable the gener-
ation of Received Data Available Interrupt. These are the
second highest priority interrupts. 0 = disabled 1 = enabled
Divisor Latch (High): Bit[0] of the 8 bit DLH register.
Table 261: UART_IIR_FCR_REG (0x50001008)
Bit
Mode Symbol
IIR_FCR
Description
Reset
15:0
R
Interrupt Identification Register: Bits[7:6], returns 00.
Bits[3:0], Interrupt ID (or IID): This indicates the highest pri-
ority pending interrupt which can be one of the following
types: 0001 = no interrupt pending. 0010 = THR empty. 0100
= received data available. 0110 = receiver line status. 0111 =
busy detect. 1100 = character timeout.
0x0
Table 262: UART_LCR_REG (0x5000100C)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
UART_DLAB
Divisor Latch Access Bit.
0x0
This bit is used to enable reading and writing of the Divisor
Latch register (DLL and DLH) to set the baud rate of the
UART.
This bit must be cleared after initial baud rate setup in order
to access other registers.
6
R/W
UART_BC
Break Control Bit.
0x0
This is used to cause a break condition to be transmitted to
the receiving device. If set to one the serial output is forced
to the spacing (logic 0) state. When not in Loopback Mode,
as determined by MCR[4], the sout line is forced low until the
Break bit is cleared. If active (MCR[6] set to one) the
sir_out_n line is continuously pulsed. When in Loopback
Mode, the break condition is internally looped back to the
receiver and the sir_out_n line is forced low.
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Table 262: UART_LCR_REG (0x5000100C)
Bit
5
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
4
R/W
UART_EPS
Even Parity Select. Writeable only when UART is not busy
(USR[0] is zero).
This is used to select between even and odd parity, when
parity is enabled (PEN set to one). If set to one, an even
number of logic 1s is transmitted or checked. If set to zero,
an odd number of logic 1s is transmitted or checked.
3
2
R/W
R/W
UART_PEN
Parity Enable. Writeable only when UART is not busy
(USR[0] is zero).
This bit is used to enable and disable parity generation and
detection in transmitted and received serial character
respectively.
0x0
0x0
0 = parity disabled
1 = parity enabled
UART_STOP
Number of stop bits.
This is used to select the number of stop bits per character
that the peripheral transmits and receives. If set to zero, one
stop bit is transmitted in the serial data.
If set to one and the data bits are set to 5 (LCR[1:0] set to
zero) one and a half stop bits is transmitted. Otherwise, two
stop bits are transmitted. Note that regardless of the number
of stop bits selected, the receiver checks only the first stop
bit.
0 = 1 stop bit
1 = 1.5 stop bits when DLS (LCR[1:0]) is zero, else 2 stop bit
1:0
R/W
UART_DLS
Data Length Select.
0x0
This is used to select the number of data bits per character
that the peripheral transmits and receives. The number of bit
that may be selected areas follows:
00 = 5 bits
01 = 6 bits
10 = 7 bits
11 = 8 bits
Table 263: UART_MCR_REG (0x50001010)
Bit
15:7
6
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
UART_SIRE
SIR Mode Enable.
0x0
This is used to enable/disable the IrDA SIR Mode features
as described in "IrDA 1.0 SIR Protocol".
0 = IrDA SIR Mode disabled
1 = IrDA SIR Mode enabled
5
-
-
Reserved
0x0
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Table 263: UART_MCR_REG (0x50001010)
Bit
Mode Symbol
Description
Reset
4
R/W
UART_LB
LoopBack Bit.
0x0
This is used to put the UART into a diagnostic mode for test
purposes.
If operating in UART mode (SIR_MODE not active, MCR[6]
set to zero), data on the sout line is held high, while serial
data output is looped back to the sin line, internally. In this
mode all the interrupts are fully functional. Also, in loopback
mode, the modem control inputs (dsr_n, cts_n, ri_n, dcd_n)
are disconnected and the modem control outputs (dtr_n,
rts_n, out1_n, out2_n) are looped back to the inputs, inter-
nally.
If operating in infrared mode (SIR_MODE active, MCR[6] set
to one), data on the sir_out_n line is held low, while serial
data output is inverted and looped back to the sir_in line.
3
R/W
R/W
-
UART_OUT2
UART_OUT1
-
OUT2.
0x0
0x0
0x0
This is used to directly control the user-designated Output2
(out2_n) output. The value written to this location is inverted
and driven out on out2_n, that is:
0 = out2_n de-asserted (logic 1)
1 = out2_n asserted (logic 0)
Note that in Loopback mode (MCR[4] set to one), the out2_n
output is held inactive high while the value of this location is
internally looped back to an input.
2
OUT1.
This is used to directly control the user-designated Output1
(out1_n) output. The value written to this location is inverted
and driven out on out1_n, that is:
0 = out1_n de-asserted (logic 1)
1 = out1_n asserted (logic 0)
Note that in Loopback mode (MCR[4] set to one), the out1_n
output is held inactive high while the value of this location is
internally looped back to an input.
1:0
Reserved
Table 264: UART_LSR_REG (0x50001014)
Bit
15:7
6
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
UART_TEMT
Transmitter Empty bit.
0x1
This bit is set whenever the Transmitter Holding Register
and the Transmitter Shift Register are both empty.
5
R
UART_THRE
Transmit Holding Register Empty bit.
0x1
If THRE mode is disabled (IER[7] set to zero), this bit indi-
cates that the THR.
This bit is set whenever data is transferred from the THR to
the transmitter shift register and no new data has been writ-
ten to the THR. This also causes a THRE Interrupt to occur,
if the THRE Interrupt is enabled.
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Table 264: UART_LSR_REG (0x50001014)
Bit
Mode Symbol
R UART_BI
Description
Reset
0x0
4
Break Interrupt bit.
This is used to indicate the detection of a break sequence on
the serial input data.
If in UART mode (SIR_MODE == Disabled), it is set when-
ever the serial input, sin, is held in a logic '0' state for longer
than the sum of start time + data bits + parity + stop bits.
If in infrared mode (SIR_MODE == Enabled), it is set when-
ever the serial input, sir_in, is continuously pulsed to logic '0'
for longer than the sum of start time + data bits + parity +
stop bits. A break condition on serial input causes one and
only one character, consisting of all zeros, to be received by
the UART.
Reading the LSR clears the BI bit. The BI indication occurs
immediately and persists until the LSR is read.
3
R
UART_FE
Framing Error bit.
0x0
This is used to indicate the occurrence of a framing error in
the receiver. A framing error occurs when the receiver does
not detect a valid STOP bit in the received data.
When a framing error occurs, the UART tries to resynchro-
nize. It does this by assuming that the error was due to the
start bit of the next character and then continues receiving
the other bit i.e. data, and/or parity and stop. It should be
noted that the Framing Error (FE) bit (LSR[3]) is set if a
break interrupt has occurred, as indicated by Break Interrupt
(BI) bit (LSR[4]).
0 = no framing error
1 = framing error
Reading the LSR clears the FE bit.
2
R
UART_PE
Parity Error bit.
0x0
This is used to indicate the occurrence of a parity error in the
receiver if the Parity Enable (PEN) bit (LCR[3]) is set.
It should be noted that the Parity Error (PE) bit (LSR[2]) is
set if a break interrupt has occurred, as indicated by Break
Interrupt (BI) bit (LSR[4]).
0 = no parity error
1 = parity error
Reading the LSR clears the PE bit.
1
R
UART_OE
Overrun error bit.
0x0
This is used to indicate the occurrence of an overrun error.
This occurs if a new data character was received before the
previous data was read.
The OE bit is set when a new character arrives in the
receiver before the previous character was read from the
RBR. When this happens, the data in the RBR is overwritten.
0 = no overrun error
1 = overrun error
Reading the LSR clears the OE bit.
0
R
UART_DR
Data Ready bit.
0x0
This is used to indicate that the receiver contains at least
one character in the RBR.
0 = no data ready
1 = data ready
This bit is cleared when the RBR is read.
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Table 265: UART_SCR_REG (0x5000101C)
Bit
Mode Symbol
Description
Reset
15:8
7:0
-
-
Reserved
0x0
0x0
R/W
UART_SCRATCH_P
AD
This register is for programmers to use as a temporary stor-
age space. It has no defined purpose in the UART Ctrl.
Table 266: UART_USR_REG (0x5000107C)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
UART_BUSY
UART Busy. This indicates that a serial transfer is in pro-
gress, when cleared indicates that the DW_apb_uart is idle
or inactive. 0 - DW_apb_uart is idle or inactive 1 -
0x0
DW_apb_uart is busy (actively transferring data) Note that it
is possible for the UART Busy bit to be cleared even though
a new character may have been sent from another device.
That is, if the DW_apb_uart has no data in the THR and RBR
and there is no transmission in progress and a start bit of a
new character has just reached the DW_apb_uart. This is
due to the fact that a valid start is not seen until the middle of
the bit period and this duration is dependent on the baud
divisor that has been programmed. If a second system clock
has been implemented (CLOCK_MODE == Enabled) the
assertion of this bit will also be delayed by several cycles of
the slower clock.
Table 267: UART_SRR_REG (0x50001088)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
W
UART_UR
UART Reset. This asynchronously resets the UART Ctrl and
synchronously removes the reset assertion. For a two clock
implementation both pclk and sclk domains are reset.
0x0
Table 268: UART_SBCR_REG (0x50001090)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
UART_SHADOW_B
REAK_CONTROL
Shadow Break Control Bit.
0x0
This is a shadow register for the Break bit (LCR[6]), this can
be used to remove the burden of having to performing a read
modify write on the LCR. This is used to cause a break con-
dition to be transmitted to the receiving device.
If set to one the serial output is forced to the spacing (logic 0)
state. When not in Loopback Mode, as determined by
MCR[4], the sout line is forced low until the Break bit is
cleared.
If SIR_MODE active (MCR[6] = 1) the sir_out_n line is con-
tinuously pulsed. When in Loopback Mode, the break condi-
tion is internally looped back to the receiver.
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Table 269: UART_DMASA_REG (0x500010A8)
Bit
Mode Symbol
DMASA
Description
Reset
0
W
This register is use to perform DMA software acknowledge if
a transfer needs to be terminated due to an error condition.
For example, if the DMA disables the channel, then the
DW_apb_uart should clear its request. This will cause the
TX request, TX single, RX request and RX single signals to
de-assert. Note that this bit is 'self-clearing' and it is not nec-
essary to clear this bit.
0x0
Table 270: UART_DLF_REG (0x500010C0)
Bit
Mode Symbol
R/W UART_DLF
Description
Reset
3:0
The fractional value is added to integer value set by DLH,
DLL. Fractional value is determined by (Divisor Fraction
value)/(2^DLF_SIZE).
0x0
Table 271: UART_CPR_REG (0x500010F4)
Bit
Mode Symbol
CPR
Description
Reset
15:0
R
Component Parameter Register
0x3941
Table 272: UART_UCV_REG (0x500010F8)
Bit
Mode Symbol
UCV
Description
Reset
15:0
R
Component Version
0x33135
2A
Table 273: UART_CTR_REG (0x500010FC)
Bit
Mode Symbol
CTR
Description
Reset
15:0
R
Component Type Register
0x44570
110
Table 274: UART2_RBR_THR_DLL_REG (0x50001100)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 274: UART2_RBR_THR_DLL_REG (0x50001100)
Bit
Mode Symbol
R/W RBR_THR_DLL
Description
Reset
7:0
Receive Buffer Register: (RBR).
0x0
This register contains the data byte received on the serial
input port (sin) in UART mode or the serial infrared input
(sir_in) in infrared mode. The data in this register is valid only
if the Data Ready (DR) bit in the Line status Register (LSR)
is set. If FIFOs are disabled (FCR[0] set to zero), the data in
the RBR must be read before the next data arrives, other-
wise it will be overwritten, resulting in an overrun error. If
FIFOs are enabled (FCR[0] set to one), this register
accesses the head of the receive FIFO. If the receive FIFO is
full and this register is not read before the next data charac-
ter arrives, then the data already in the FIFO will be pre-
served but any incoming data will be lost. An overrun error
will also occur.
Transmit Holding Register: (THR)
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
Divisor Latch (Low): (DLL)
This register makes up the lower 8-bits of a 16-bit, read/
write, Divisor Latch register that contains the baud rate divi-
sor for the UART. This register may only be accessed when
the DLAB bit (LCR[7]) is set. The output baud rate is equal to
the serial clock (sclk) frequency divided by sixteen times the
value of the baud rate divisor, as follows:
baud rate = (serial clock freq) / (16 * divisor)
Note that with the Divisor Latch Registers (DLL and DLH) set
to zero, the baud clock is disabled and no serial communica-
tions will occur. Also, once the DLL is set, at least 8 clock
cycles of the slowest DW_apb_uart clock should be allowed
to pass before transmitting or receiving data.
Divisor Latch (Low): (DLH) (Note: This register is placed in
UART_IER_DLH_REG with offset 0x4)
Upper 8-bits of a 16-bit, read/write, Divisor Latch register
that contains the baud rate divisor for the UART. This regis-
ter may be accessed only when the DLAB bit (LCR[7]) is set.
The output baud rate is equal to the serial clock frequency
divided by sixteen times the value of the baud rate divisor, as
follows:
baud rate = (serial clock freq) / (16 * divisor).
Note that with the Divisor Latch Registers (DLL and DLH) set
to zero, the baud clock is disabled and no serial communica-
tions occur. Also, once the DLH is set, at least 8 clock cycles
of the slowest DW_apb_uart clock should be allowed to pass
before transmitting or receiving data.
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Table 275: UART2_IER_DLH_REG (0x50001104)
Bit
15:8
7
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
R/W
PTIME_DLH7
Interrupt Enable Register: PTIME, Programmable THRE
Interrupt Mode Enable. This is used to enable/disable the
generation of THRE Interrupt. 0 = disabled 1 = enabled Divi-
sor Latch (High): Bit[7] of the 8 bit DLH register.
6:4
3
-
-
Reserved
Reserved
0x0
0x0
0x0
-
-
2
R/W
ELSI_DHL2
Interrupt Enable Register: ELSI, Enable Receiver Line Sta-
tus Interrupt. This is used to enable/disable the generation of
Receiver Line Status Interrupt. This is the highest priority
interrupt. 0 = disabled 1 = enabled Divisor Latch (High):
Bit[2] of the 8 bit DLH register.
1
0
R/W
R/W
ETBEI_DLH1
ERBFI_DLH0
Interrupt Enable Register: ETBEI, Enable Transmit Holding
Register Empty Interrupt. This is used to enable/disable the
generation of Transmitter Holding Register Empty Interrupt.
This is the third highest priority interrupt. 0 = disabled 1 =
enabled Divisor Latch (High): Bit[1] of the 8 bit DLH register.
0x0
0x0
Interrupt Enable Register: ERBFI, Enable Received Data
Available Interrupt. This is used to enable/disable the gener-
ation of Received Data Available Interrupt and the Character
Timeout Interrupt (if in FIFO mode and FIFO's enabled).
These are the second highest priority interrupts. 0 = disabled
1 = enabled Divisor Latch (High): Bit[0] of the 8 bit DLH reg-
ister.
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Table 276: UART2_IIR_FCR_REG (0x50001108)
Bit
Mode Symbol
R/W IIR_FCR
Description
Reset
15:0
Interrupt Identification Register, reading this register; FIFO
Control Register, writing to this register.
0x0
Interrupt Identification Register: Bits[7:6], FIFO's Enabled (or
FIFOSE): This is used to indicate whether the FIFO's are
enabled or disabled. 00 = disabled. 11 = enabled. Bits[3:0],
Interrupt ID (or IID): This indicates the highest priority pend-
ing interrupt which can be one of the following types:0001 =
no interrupt pending. 0010 = THR empty. 0100 = received
data available. 0110 = receiver line status. 0111 = busy
detect. 1100 = character timeout.
FIFO Control Register Bits[7:6], RCVR Trigger (or RT):. This
is used to select the trigger level in the receiver FIFO at
which the Received Data Available Interrupt will be gener-
ated. In auto flow control mode it is used to determine when
the rts_n signal will be de-asserted. It also determines when
the dma_rx_req_n signal will be asserted when in certain
modes of operation. The following trigger levels are sup-
ported: 00 = 1 character in the FIFO 01 = FIFO 1/4 full 10 =
FIFO 1/2 full 11 = FIFO 2 less than full Bits[5:4], TX Empty
Trigger (or TET): This is used to select the empty threshold
level at which the THRE Interrupts will be generated when
the mode is active. It also determines when the
dma_tx_req_n signal will be asserted when in certain modes
of operation. The following trigger levels are supported: 00 =
FIFO empty 01 = 2 characters in the FIFO 10 = FIFO 1/4 full
11 = FIFO 1/2 full Bit[3], DMA Mode (or DMAM): This deter-
mines the DMA signalling mode used for the dma_tx_req_n
and dma_rx_req_n output signals. 0 = mode 0 1 = mode 1
Bit[2], XMIT FIFO Reset (or XFIFOR): This resets the control
portion of the transmit FIFO and treats the FIFO as empty.
Note that this bit is 'self-clearing' and it is not necessary to
clear this bit. Bit[1], RCVR FIFO Reset (or RFIFOR): This
resets the control portion of the receive FIFO and treats the
FIFO as empty. Note that this bit is 'self-clearing' and it is not
necessary to clear this bit. Bit[0], FIFO Enable (or FIFOE):
This enables/disables the transmit (XMIT) and receive
(RCVR) FIFO's. Whenever the value of this bit is changed
both the XMIT and RCVR controller portion of FIFO's will be
reset.
Table 277: UART2_LCR_REG (0x5000110C)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
UART_DLAB
Divisor Latch Access Bit.
0x0
This bit is used to enable reading and writing of the Divisor
Latch register (DLL and DLH) to set the baud rate of the
UART.
This bit must be cleared after initial baud rate setup in order
to access other registers.
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Table 277: UART2_LCR_REG (0x5000110C)
Bit
Mode Symbol
Description
Reset
6
R/W
UART_BC
Break Control Bit.
0x0
This is used to cause a break condition to be transmitted to
the receiving device. If set to one the serial output is forced
to the spacing (logic 0) state. When not in Loopback Mode,
as determined by MCR[4], the sout line is forced low until the
Break bit is cleared. If active (MCR[6] set to one) the
sir_out_n line is continuously pulsed. When in Loopback
Mode, the break condition is internally looped back to the
receiver and the sir_out_n line is forced low.
5
4
-
-
Reserved
0x0
0x0
R/W
UART_EPS
Even Parity Select. Writeable only when UART is not busy
(USR[0] is zero).
This is used to select between even and odd parity, when
parity is enabled (PEN set to one). If set to one, an even
number of logic 1s is transmitted or checked. If set to zero,
an odd number of logic 1s is transmitted or checked.
3
2
R/W
R/W
UART_PEN
Parity Enable. Writeable only when UART is not busy
(USR[0] is zero)
This bit is used to enable and disable parity generation and
detection in transmitted and received serial character
respectively.
0x0
0x0
0 = parity disabled
1 = parity enabled
UART_STOP
Number of stop bits.
This is used to select the number of stop bits per character
that the peripheral transmits and receives. If set to zero, one
stop bit is transmitted in the serial data.
If set to one and the data bits are set to 5 (LCR[1:0] set to
zero) one and a half stop bits is transmitted. Otherwise, two
stop bits are transmitted. Note that regardless of the number
of stop bits selected, the receiver checks only the first stop
bit.
0 = 1 stop bit
1 = 1.5 stop bits when DLS (LCR[1:0]) is zero, else 2 stop bit
1:0
R/W
UART_DLS
Data Length Select.
0x0
This is used to select the number of data bits per character
that the peripheral transmits and receives. The number of bit
that may be selected areas follows:
00 = 5 bits
01 = 6 bits
10 = 7 bits
11 = 8 bits
Table 278: UART2_MCR_REG (0x50001110)
Bit
15:7
6
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
UART_SIRE
SIR Mode Enable.
0x0
This is used to enable/disable the IrDA SIR Mode features
as described in "IrDA 1.0 SIR Protocol".
0 = IrDA SIR Mode disabled
1 = IrDA SIR Mode enabled
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Table 278: UART2_MCR_REG (0x50001110)
Bit
Mode Symbol
Description
Reset
5
R/W
UART_AFCE
Auto Flow Control Enable.
0x0
Writeable only when AFCE_MODE == Enabled, always
readable. When FIFOs are enabled and the Auto Flow Con-
trol Enable (AFCE) bit is set, Auto Flow Control features are
enabled as described in "Auto Flow Control".
0 = Auto Flow Control Mode disabled
1 = Auto Flow Control Mode enabled
4
R/W
UART_LB
LoopBack Bit.
0x0
This is used to put the UART into a diagnostic mode for test
purposes.
If operating in UART mode (SIR_MODE not active, MCR[6]
set to zero), data on the sout line is held high, while serial
data output is looped back to the sin line, internally. In this
mode all the interrupts are fully functional. Also, in loopback
mode, the modem control inputs (dsr_n, cts_n, ri_n, dcd_n)
are disconnected and the modem control outputs (dtr_n,
rts_n, out1_n, out2_n) are looped back to the inputs, inter-
nally.
If operating in infrared mode (SIR_MODE active, MCR[6] set
to one), data on the sir_out_n line is held low, while serial
data output is inverted and looped back to the sir_in line.
3
2
1
R/W
R/W
R/W
UART_OUT2
UART_OUT1
UART_RTS
OUT2.
0x0
0x0
0x0
This is used to directly control the user-designated Output2
(out2_n) output. The value written to this location is inverted
and driven out on out2_n, that is:
0 = out2_n de-asserted (logic 1)
1 = out2_n asserted (logic 0)
Note that in Loopback mode (MCR[4] set to one), the out2_n
output is held inactive high while the value of this location is
internally looped back to an input.
OUT1.
This is used to directly control the user-designated Output1
(out1_n) output. The value written to this location is inverted
and driven out on out1_n, that is:
0 = out1_n de-asserted (logic 1)
1 = out1_n asserted (logic 0)
Note that in Loopback mode (MCR[4] set to one), the out1_n
output is held inactive high while the value of this location is
internally looped back to an input.
Request to Send.
This is used to directly control the Request to Send (rts_n)
output. The Request To Send (rts_n) output is used to inform
the modem or data set that the UART is ready to exchange
data.
When Auto RTS Flow Control is not enabled (MCR[5] set to
zero), the rts_n signal is set low by programming MCR[1]
(RTS) to a high.In Auto Flow Control, AFCE_MODE == Ena-
bled and active (MCR[5] set to one) and FIFOs enable
(FCR[0] set to one), the rts_n output is controlled in the
same way, but is also gated with the receiver FIFO threshold
trigger (rts_n is inactive high when above the threshold). The
rts_n signal is de-asserted when MCR[1] is set low.
Note that in Loopback mode (MCR[4] set to one), the rts_n
output is held inactive high while the value of this location is
internally looped back to an input.
0
-
-
Reserved
0x0
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Table 279: UART2_LSR_REG (0x50001114)
Bit
15:8
7
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
R
UART_RFE
Receiver FIFO Error bit.
This bit is only relevant when FIFOs are enabled (FCR[0] set
to one). This is used to indicate if there is at least one parity
error, framing error, or break indication in the FIFO.
0 = no error in RX FIFO
1 = error in RX FIFO
This bit is cleared when the LSR is read and the character
with the error is at the top of the receiver FIFO and there are
no subsequent errors in the FIFO.
6
5
R
R
UART_TEMT
UART_THRE
Transmitter Empty bit.
0x1
0x1
If FIFOs enabled (FCR[0] set to one), this bit is set whenever
the Transmitter Shift Register and the FIFO are both empty.
If FIFOs are disabled, this bit is set whenever the Transmitter
Holding Register and the Transmitter Shift Register are both
empty.
Transmit Holding Register Empty bit.
If THRE mode is disabled (IER[7] set to zero) and regardless
of FIFO's being implemented/enabled or not, this bit indi-
cates that the THR or TX FIFO is empty.
This bit is set whenever data is transferred from the THR or
TX FIFO to the transmitter shift register and no new data has
been written to the THR or TX FIFO. This also causes a
THRE Interrupt to occur, if the THRE Interrupt is enabled. If
both modes are active (IER[7] set to one and FCR[0] set to
one respectively), the functionality is switched to indicate the
transmitter FIFO is full, and no longer controls THRE inter-
rupts, which are then controlled by the FCR[5:4] threshold
setting.
4
R
UART_BI
Break Interrupt bit.
0x0
This is used to indicate the detection of a break sequence on
the serial input data.
If in UART mode (SIR_MODE == Disabled), it is set when-
ever the serial input, sin, is held in a logic '0' state for longer
than the sum of start time + data bits + parity + stop bits.
If in infrared mode (SIR_MODE == Enabled), it is set when-
ever the serial input, sir_in, is continuously pulsed to logic '0'
for longer than the sum of start time + data bits + parity +
stop bits. A break condition on serial input causes one and
only one character, consisting of all zeros, to be received by
the UART.
In the FIFO mode, the character associated with the break
condition is carried through the FIFO and is revealed when
the character is at the top of the FIFO.
Reading the LSR clears the BI bit. In the non-FIFO mode,
the BI indication occurs immediately and persists until the
LSR is read.
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Table 279: UART2_LSR_REG (0x50001114)
Bit
Mode Symbol
Description
Reset
3
R
UART_FE
Framing Error bit.
0x0
This is used to indicate the occurrence of a framing error in
the receiver. A framing error occurs when the receiver does
not detect a valid STOP bit in the received data.
In the FIFO mode, since the framing error is associated with
a character received, it is revealed when the character with
the framing error is at the top of the FIFO.
When a framing error occurs, the UART tries to resynchro-
nize. It does this by assuming that the error was due to the
start bit of the next character and then continues receiving
the other bit i.e. data, and/or parity and stop. It should be
noted that the Framing Error (FE) bit (LSR[3]) is set if a
break interrupt has occurred, as indicated by Break Interrupt
(BI) bit (LSR[4]).
0 = no framing error
1 = framing error
Reading the LSR clears the FE bit.
2
R
UART_PE
Parity Error bit.
0x0
This is used to indicate the occurrence of a parity error in the
receiver if the Parity Enable (PEN) bit (LCR[3]) is set.
In the FIFO mode, since the parity error is associated with a
character received, it is revealed when the character with the
parity error arrives at the top of the FIFO.
It should be noted that the Parity Error (PE) bit (LSR[2]) is
set if a break interrupt has occurred, as indicated by Break
Interrupt (BI) bit (LSR[4]).
0 = no parity error
1 = parity error
Reading the LSR clears the PE bit.
1
R
UART_OE
Overrun error bit.
0x0
This is used to indicate the occurrence of an overrun error.
This occurs if a new data character was received before the
previous data was read.
In the non-FIFO mode, the OE bit is set when a new charac-
ter arrives in the receiver before the previous character was
read from the RBR. When this happens, the data in the RBR
is overwritten. In the FIFO mode, an overrun error occurs
when the FIFO is full and a new character arrives at the
receiver. The data in the FIFO is retained and the data in the
receive shift register is lost.
0 = no overrun error
1 = overrun error
Reading the LSR clears the OE bit.
0
R
UART_DR
Data Ready bit.
0x0
This is used to indicate that the receiver contains at least
one character in the RBR or the receiver FIFO.
0 = no data ready
1 = data ready
This bit is cleared when the RBR is read in non-FIFO mode,
or when the receiver FIFO is empty, in FIFO mode.
Table 280: UART2_MSR_REG (0x50001118)
Bit
Mode Symbol
Description
Reset
15:5
-
-
Reserved
0x0
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Table 280: UART2_MSR_REG (0x50001118)
Bit
Mode Symbol
Description
Reset
4
R
UART_CTS
Clear to Send.
0x0
This is used to indicate the current state of the modem con-
trol line cts_n. This bit is the complement of cts_n. When the
Clear to Send input (cts_n) is asserted it is an indication that
the modem or data set is ready to exchange data with the
UART Ctrl.
0 = cts_n input is de-asserted (logic 1)
1 = cts_n input is asserted (logic 0)
In Loopback Mode (MCR[4] = 1), CTS is the same as
MCR[1] (RTS).
3:1
0
-
-
Reserved
0x0
0x0
R
UART_DCTS
Delta Clear to Send.
This is used to indicate that the modem control line cts_n
has changed since the last time the MSR was read.
0 = no change on cts_n since last read of MSR
1 = change on cts_n since last read of MSR
Reading the MSR clears the DCTS bit. In Loopback Mode
(MCR[4] = 1), DCTS reflects changes on MCR[1] (RTS).
Note, if the DCTS bit is not set and the cts_n signal is
asserted (low) and a reset occurs (software or otherwise),
then the DCTS bit is set when the reset is removed if the
cts_n signal remains asserted.
Table 281: UART2_SCR_REG (0x5000111C)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R/W
UART_SCRATCH_P
AD
This register is for programmers to use as a temporary stor-
age space. It has no defined purpose in the UART Ctrl.
0x0
Table 282: UART2_SRBR_STHR0_REG (0x50001130)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 282: UART2_SRBR_STHR0_REG (0x50001130)
Bit
Mode Symbol
R/W SRBR_STHRX
Description
Reset
7:0
Shadow Receive Buffer Register x: This is a shadow register
for the RBR and has been allocated sixteen 32-bit locations
so as to accommodate burst accesses from the master. This
register contains the data byte received on the serial input
port (sin) in UART mode or the serial infrared input (sir_in) in
infrared mode. The data in this register is valid only if the
Data Ready (DR) bit in the Line status Register (LSR) is set.
If FIFOs are disabled (FCR[0] set to zero), the data in the
RBR must be read before the next data arrives, otherwise it
will be overwritten, resulting in an overrun error. If FIFOs are
enabled (FCR[0] set to one), this register accesses the head
of the receive FIFO. If the receive FIFO is full and this regis-
ter is not read before the next data character arrives, then
the data already in the FIFO will be preserved but any
incoming data will be lost. An overrun error will also occur.
Shadow Transmit Holding Register 0: This is a shadow reg-
ister for the THR and has been allocated sixteen 32-bit loca-
tions so as to accommodate burst accesses from the master.
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
0x0
Table 283: UART2_SRBR_STHR1_REG (0x50001134)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 283: UART2_SRBR_STHR1_REG (0x50001134)
Bit
Mode Symbol
R/W SRBR_STHRX
Description
Reset
7:0
Shadow Receive Buffer Register x: This is a shadow register
for the RBR and has been allocated sixteen 32-bit locations
so as to accommodate burst accesses from the master. This
register contains the data byte received on the serial input
port (sin) in UART mode or the serial infrared input (sir_in) in
infrared mode. The data in this register is valid only if the
Data Ready (DR) bit in the Line status Register (LSR) is set.
If FIFOs are disabled (FCR[0] set to zero), the data in the
RBR must be read before the next data arrives, otherwise it
will be overwritten, resulting in an overrun error. If FIFOs are
enabled (FCR[0] set to one), this register accesses the head
of the receive FIFO. If the receive FIFO is full and this regis-
ter is not read before the next data character arrives, then
the data already in the FIFO will be preserved but any
incoming data will be lost. An overrun error will also occur.
Shadow Transmit Holding Register 0: This is a shadow reg-
ister for the THR and has been allocated sixteen 32-bit loca-
tions so as to accommodate burst accesses from the master.
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
0x0
Table 284: UART2_SRBR_STHR2_REG (0x50001138)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 284: UART2_SRBR_STHR2_REG (0x50001138)
Bit
Mode Symbol
R/W SRBR_STHRX
Description
Reset
7:0
Shadow Receive Buffer Register x: This is a shadow register
for the RBR and has been allocated sixteen 32-bit locations
so as to accommodate burst accesses from the master. This
register contains the data byte received on the serial input
port (sin) in UART mode or the serial infrared input (sir_in) in
infrared mode. The data in this register is valid only if the
Data Ready (DR) bit in the Line status Register (LSR) is set.
If FIFOs are disabled (FCR[0] set to zero), the data in the
RBR must be read before the next data arrives, otherwise it
will be overwritten, resulting in an overrun error. If FIFOs are
enabled (FCR[0] set to one), this register accesses the head
of the receive FIFO. If the receive FIFO is full and this regis-
ter is not read before the next data character arrives, then
the data already in the FIFO will be preserved but any
incoming data will be lost. An overrun error will also occur.
Shadow Transmit Holding Register 0: This is a shadow reg-
ister for the THR and has been allocated sixteen 32-bit loca-
tions so as to accommodate burst accesses from the master.
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
0x0
Table 285: UART2_SRBR_STHR3_REG (0x5000113C)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 285: UART2_SRBR_STHR3_REG (0x5000113C)
Bit
Mode Symbol
R/W SRBR_STHRX
Description
Reset
7:0
Shadow Receive Buffer Register x: This is a shadow register
for the RBR and has been allocated sixteen 32-bit locations
so as to accommodate burst accesses from the master. This
register contains the data byte received on the serial input
port (sin) in UART mode or the serial infrared input (sir_in) in
infrared mode. The data in this register is valid only if the
Data Ready (DR) bit in the Line status Register (LSR) is set.
If FIFOs are disabled (FCR[0] set to zero), the data in the
RBR must be read before the next data arrives, otherwise it
will be overwritten, resulting in an overrun error. If FIFOs are
enabled (FCR[0] set to one), this register accesses the head
of the receive FIFO. If the receive FIFO is full and this regis-
ter is not read before the next data character arrives, then
the data already in the FIFO will be preserved but any
incoming data will be lost. An overrun error will also occur.
Shadow Transmit Holding Register 0: This is a shadow reg-
ister for the THR and has been allocated sixteen 32-bit loca-
tions so as to accommodate burst accesses from the master.
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
0x0
Table 286: UART2_SRBR_STHR4_REG (0x50001140)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 286: UART2_SRBR_STHR4_REG (0x50001140)
Bit
Mode Symbol
R/W SRBR_STHRX
Description
Reset
7:0
Shadow Receive Buffer Register x: This is a shadow register
for the RBR and has been allocated sixteen 32-bit locations
so as to accommodate burst accesses from the master. This
register contains the data byte received on the serial input
port (sin) in UART mode or the serial infrared input (sir_in) in
infrared mode. The data in this register is valid only if the
Data Ready (DR) bit in the Line status Register (LSR) is set.
If FIFOs are disabled (FCR[0] set to zero), the data in the
RBR must be read before the next data arrives, otherwise it
will be overwritten, resulting in an overrun error. If FIFOs are
enabled (FCR[0] set to one), this register accesses the head
of the receive FIFO. If the receive FIFO is full and this regis-
ter is not read before the next data character arrives, then
the data already in the FIFO will be preserved but any
incoming data will be lost. An overrun error will also occur.
Shadow Transmit Holding Register 0: This is a shadow reg-
ister for the THR and has been allocated sixteen 32-bit loca-
tions so as to accommodate burst accesses from the master.
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
0x0
Table 287: UART2_SRBR_STHR5_REG (0x50001144)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 287: UART2_SRBR_STHR5_REG (0x50001144)
Bit
Mode Symbol
R/W SRBR_STHRX
Description
Reset
7:0
Shadow Receive Buffer Register x: This is a shadow register
for the RBR and has been allocated sixteen 32-bit locations
so as to accommodate burst accesses from the master. This
register contains the data byte received on the serial input
port (sin) in UART mode or the serial infrared input (sir_in) in
infrared mode. The data in this register is valid only if the
Data Ready (DR) bit in the Line status Register (LSR) is set.
If FIFOs are disabled (FCR[0] set to zero), the data in the
RBR must be read before the next data arrives, otherwise it
will be overwritten, resulting in an overrun error. If FIFOs are
enabled (FCR[0] set to one), this register accesses the head
of the receive FIFO. If the receive FIFO is full and this regis-
ter is not read before the next data character arrives, then
the data already in the FIFO will be preserved but any
incoming data will be lost. An overrun error will also occur.
Shadow Transmit Holding Register 0: This is a shadow reg-
ister for the THR and has been allocated sixteen 32-bit loca-
tions so as to accommodate burst accesses from the master.
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
0x0
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Table 288: UART2_SRBR_STHR6_REG (0x50001148)
Bit
Mode Symbol
Description
Reset
15:8
7:0
-
-
Reserved
0x0
0x0
R/W
SRBR_STHRX
Shadow Receive Buffer Register x: This is a shadow register
for the RBR and has been allocated sixteen 32-bit locations
so as to accommodate burst accesses from the master. This
register contains the data byte received on the serial input
port (sin) in UART mode or the serial infrared input (sir_in) in
infrared mode. The data in this register is valid only if the
Data Ready (DR) bit in the Line status Register (LSR) is set.
If FIFOs are disabled (FCR[0] set to zero), the data in the
RBR must be read before the next data arrives, otherwise it
will be overwritten, resulting in an overrun error. If FIFOs are
enabled (FCR[0] set to one), this register accesses the head
of the receive FIFO. If the receive FIFO is full and this regis-
ter is not read before the next data character arrives, then
the data already in the FIFO will be preserved but any
incoming data will be lost. An overrun error will also occur.
Shadow Transmit Holding Register 0: This is a shadow reg-
ister for the THR and has been allocated sixteen 32-bit loca-
tions so as to accommodate burst accesses from the master.
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
Table 289: UART2_SRBR_STHR7_REG (0x5000114C)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 289: UART2_SRBR_STHR7_REG (0x5000114C)
Bit
Mode Symbol
R/W SRBR_STHRX
Description
Reset
7:0
Shadow Receive Buffer Register x: This is a shadow register
for the RBR and has been allocated sixteen 32-bit locations
so as to accommodate burst accesses from the master. This
register contains the data byte received on the serial input
port (sin) in UART mode or the serial infrared input (sir_in) in
infrared mode. The data in this register is valid only if the
Data Ready (DR) bit in the Line status Register (LSR) is set.
If FIFOs are disabled (FCR[0] set to zero), the data in the
RBR must be read before the next data arrives, otherwise it
will be overwritten, resulting in an overrun error. If FIFOs are
enabled (FCR[0] set to one), this register accesses the head
of the receive FIFO. If the receive FIFO is full and this regis-
ter is not read before the next data character arrives, then
the data already in the FIFO will be preserved but any
incoming data will be lost. An overrun error will also occur.
Shadow Transmit Holding Register 0: This is a shadow reg-
ister for the THR and has been allocated sixteen 32-bit loca-
tions so as to accommodate burst accesses from the master.
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
0x0
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Table 290: UART2_SRBR_STHR8_REG (0x50001150)
Bit
Mode Symbol
Description
Reset
15:8
7:0
-
-
Reserved
0x0
0x0
R/W
SRBR_STHRX
Shadow Receive Buffer Register x: This is a shadow register
for the RBR and has been allocated sixteen 32-bit locations
so as to accommodate burst accesses from the master. This
register contains the data byte received on the serial input
port (sin) in UART mode or the serial infrared input (sir_in) in
infrared mode. The data in this register is valid only if the
Data Ready (DR) bit in the Line status Register (LSR) is set.
If FIFOs are disabled (FCR[0] set to zero), the data in the
RBR must be read before the next data arrives, otherwise it
will be overwritten, resulting in an overrun error. If FIFOs are
enabled (FCR[0] set to one), this register accesses the head
of the receive FIFO. If the receive FIFO is full and this regis-
ter is not read before the next data character arrives, then
the data already in the FIFO will be preserved but any
incoming data will be lost. An overrun error will also occur.
Shadow Transmit Holding Register 0: This is a shadow reg-
ister for the THR and has been allocated sixteen 32-bit loca-
tions so as to accommodate burst accesses from the master.
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
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Table 291: UART2_SRBR_STHR9_REG (0x50001154)
Bit
Mode Symbol
Description
Reset
15:8
7:0
-
-
Reserved
0x0
0x0
R/W
SRBR_STHRX
Shadow Receive Buffer Register x: This is a shadow register
for the RBR and has been allocated sixteen 32-bit locations
so as to accommodate burst accesses from the master. This
register contains the data byte received on the serial input
port (sin) in UART mode or the serial infrared input (sir_in) in
infrared mode. The data in this register is valid only if the
Data Ready (DR) bit in the Line status Register (LSR) is set.
If FIFOs are disabled (FCR[0] set to zero), the data in the
RBR must be read before the next data arrives, otherwise it
will be overwritten, resulting in an overrun error. If FIFOs are
enabled (FCR[0] set to one), this register accesses the head
of the receive FIFO. If the receive FIFO is full and this regis-
ter is not read before the next data character arrives, then
the data already in the FIFO will be preserved but any
incoming data will be lost. An overrun error will also occur.
Shadow Transmit Holding Register 0: This is a shadow reg-
ister for the THR and has been allocated sixteen 32-bit loca-
tions so as to accommodate burst accesses from the master.
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
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Table 292: UART2_SRBR_STHR10_REG (0x50001158)
Bit
Mode Symbol
Description
Reset
15:8
7:0
-
-
Reserved
0x0
0x0
R/W
SRBR_STHRX
Shadow Receive Buffer Register x: This is a shadow register
for the RBR and has been allocated sixteen 32-bit locations
so as to accommodate burst accesses from the master. This
register contains the data byte received on the serial input
port (sin) in UART mode or the serial infrared input (sir_in) in
infrared mode. The data in this register is valid only if the
Data Ready (DR) bit in the Line status Register (LSR) is set.
If FIFOs are disabled (FCR[0] set to zero), the data in the
RBR must be read before the next data arrives, otherwise it
will be overwritten, resulting in an overrun error. If FIFOs are
enabled (FCR[0] set to one), this register accesses the head
of the receive FIFO. If the receive FIFO is full and this regis-
ter is not read before the next data character arrives, then
the data already in the FIFO will be preserved but any
incoming data will be lost. An overrun error will also occur.
Shadow Transmit Holding Register 0: This is a shadow reg-
ister for the THR and has been allocated sixteen 32-bit loca-
tions so as to accommodate burst accesses from the master.
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
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Table 293: UART2_SRBR_STHR11_REG (0x5000115C)
Bit
Mode Symbol
Description
Reset
15:8
7:0
-
-
Reserved
0x0
0x0
R/W
SRBR_STHRX
Shadow Receive Buffer Register x: This is a shadow register
for the RBR and has been allocated sixteen 32-bit locations
so as to accommodate burst accesses from the master. This
register contains the data byte received on the serial input
port (sin) in UART mode or the serial infrared input (sir_in) in
infrared mode. The data in this register is valid only if the
Data Ready (DR) bit in the Line status Register (LSR) is set.
If FIFOs are disabled (FCR[0] set to zero), the data in the
RBR must be read before the next data arrives, otherwise it
will be overwritten, resulting in an overrun error. If FIFOs are
enabled (FCR[0] set to one), this register accesses the head
of the receive FIFO. If the receive FIFO is full and this regis-
ter is not read before the next data character arrives, then
the data already in the FIFO will be preserved but any
incoming data will be lost. An overrun error will also occur.
Shadow Transmit Holding Register 0: This is a shadow reg-
ister for the THR and has been allocated sixteen 32-bit loca-
tions so as to accommodate burst accesses from the master.
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
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Table 294: UART2_SRBR_STHR12_REG (0x50001160)
Bit
Mode Symbol
Description
Reset
15:8
7:0
-
-
Reserved
0x0
0x0
R/W
SRBR_STHRX
Shadow Receive Buffer Register x: This is a shadow register
for the RBR and has been allocated sixteen 32-bit locations
so as to accommodate burst accesses from the master. This
register contains the data byte received on the serial input
port (sin) in UART mode or the serial infrared input (sir_in) in
infrared mode. The data in this register is valid only if the
Data Ready (DR) bit in the Line status Register (LSR) is set.
If FIFOs are disabled (FCR[0] set to zero), the data in the
RBR must be read before the next data arrives, otherwise it
will be overwritten, resulting in an overrun error. If FIFOs are
enabled (FCR[0] set to one), this register accesses the head
of the receive FIFO. If the receive FIFO is full and this regis-
ter is not read before the next data character arrives, then
the data already in the FIFO will be preserved but any
incoming data will be lost. An overrun error will also occur.
Shadow Transmit Holding Register 0: This is a shadow reg-
ister for the THR and has been allocated sixteen 32-bit loca-
tions so as to accommodate burst accesses from the master.
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
Table 295: UART2_SRBR_STHR13_REG (0x50001164)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 295: UART2_SRBR_STHR13_REG (0x50001164)
Bit
Mode Symbol
R/W SRBR_STHRX
Description
Reset
7:0
Shadow Receive Buffer Register x: This is a shadow register
for the RBR and has been allocated sixteen 32-bit locations
so as to accommodate burst accesses from the master. This
register contains the data byte received on the serial input
port (sin) in UART mode or the serial infrared input (sir_in) in
infrared mode. The data in this register is valid only if the
Data Ready (DR) bit in the Line status Register (LSR) is set.
If FIFOs are disabled (FCR[0] set to zero), the data in the
RBR must be read before the next data arrives, otherwise it
will be overwritten, resulting in an overrun error. If FIFOs are
enabled (FCR[0] set to one), this register accesses the head
of the receive FIFO. If the receive FIFO is full and this regis-
ter is not read before the next data character arrives, then
the data already in the FIFO will be preserved but any
incoming data will be lost. An overrun error will also occur.
Shadow Transmit Holding Register 0: This is a shadow reg-
ister for the THR and has been allocated sixteen 32-bit loca-
tions so as to accommodate burst accesses from the master.
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
0x0
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Table 296: UART2_SRBR_STHR14_REG (0x50001168)
Bit
Mode Symbol
Description
Reset
15:8
7:0
-
-
Reserved
0x0
0x0
R/W
SRBR_STHRX
Shadow Receive Buffer Register x: This is a shadow register
for the RBR and has been allocated sixteen 32-bit locations
so as to accommodate burst accesses from the master. This
register contains the data byte received on the serial input
port (sin) in UART mode or the serial infrared input (sir_in) in
infrared mode. The data in this register is valid only if the
Data Ready (DR) bit in the Line status Register (LSR) is set.
If FIFOs are disabled (FCR[0] set to zero), the data in the
RBR must be read before the next data arrives, otherwise it
will be overwritten, resulting in an overrun error. If FIFOs are
enabled (FCR[0] set to one), this register accesses the head
of the receive FIFO. If the receive FIFO is full and this regis-
ter is not read before the next data character arrives, then
the data already in the FIFO will be preserved but any
incoming data will be lost. An overrun error will also occur.
Shadow Transmit Holding Register 0: This is a shadow reg-
ister for the THR and has been allocated sixteen 32-bit loca-
tions so as to accommodate burst accesses from the master.
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
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Table 297: UART2_SRBR_STHR15_REG (0x5000116C)
Bit
Mode Symbol
Description
Reset
15:8
7:0
-
-
Reserved
0x0
0x0
R/W
SRBR_STHRX
Shadow Receive Buffer Register x: This is a shadow register
for the RBR and has been allocated sixteen 32-bit locations
so as to accommodate burst accesses from the master. This
register contains the data byte received on the serial input
port (sin) in UART mode or the serial infrared input (sir_in) in
infrared mode. The data in this register is valid only if the
Data Ready (DR) bit in the Line status Register (LSR) is set.
If FIFOs are disabled (FCR[0] set to zero), the data in the
RBR must be read before the next data arrives, otherwise it
will be overwritten, resulting in an overrun error. If FIFOs are
enabled (FCR[0] set to one), this register accesses the head
of the receive FIFO. If the receive FIFO is full and this regis-
ter is not read before the next data character arrives, then
the data already in the FIFO will be preserved but any
incoming data will be lost. An overrun error will also occur.
Shadow Transmit Holding Register 0: This is a shadow reg-
ister for the THR and has been allocated sixteen 32-bit loca-
tions so as to accommodate burst accesses from the master.
This register contains data to be transmitted on the serial
output port (sout) in UART mode or the serial infrared output
(sir_out_n) in infrared mode. Data should only be written to
the THR when the THR Empty (THRE) bit (LSR[5]) is set. If
FIFO's are disabled (FCR[0] set to zero) and THRE is set,
writing a single character to the THR clears the THRE. Any
additional writes to the THR before the THRE is set again
causes the THR data to be overwritten. If FIFO's are enabled
(FCR[0] set to one) and THRE is set, x number of characters
of data may be written to the THR before the FIFO is full.
The number x (default=16) is determined by the value of
FIFO Depth that you set during configuration. Any attempt to
write data when the FIFO is full results in the write data being
lost.
Table 298: UART2_FAR_REG (0x50001170)
Bit
Mode Symbol
UART_FAR
Description
Reset
0
R
Description: Writes will have no effect when FIFO_ACCESS
== No, always readable. This register is use to enable a
FIFO access mode for testing, so that the receive FIFO can
be written by the master and the transmit FIFO can be read
by the master when FIFO's are implemented and enabled.
When FIFO's are not implemented or not enabled it allows
the RBR to be written by the master and the THR to be read
by the master. 0 = FIFO access mode disabled 1 = FIFO
access mode enabled Note, that when the FIFO access
mode is enabled/disabled, the control portion of the receive
FIFO and transmit FIFO is reset and the FIFO's are treated
as empty.
0x0
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Table 299: UART2_USR_REG (0x5000117C)
Bit
15:5
4
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
R
UART_RFF
Receive FIFO Full.
This is used to indicate that the receive FIFO is completely
full.
0 = Receive FIFO not full
1 = Receive FIFO Full
This bit is cleared when the RX FIFO is no longer full.
3
2
R
R
UART_RFNE
UART_TFE
Receive FIFO Not Empty.
This is used to indicate that the receive FIFO contains one or
more entries.
0 = Receive FIFO is empty
1 = Receive FIFO is not empty
0x0
0x1
This bit is cleared when the RX FIFO is empty.
Transmit FIFO Empty.
This is used to indicate that the transmit FIFO is completely
empty.
0 = Transmit FIFO is not empty
1 = Transmit FIFO is empty
This bit is cleared when the TX FIFO is no longer empty.
1
0
R
R
UART_TFNF
UART_BUSY
Transmit FIFO Not Full.
This is used to indicate that the transmit FIFO in not full.
0 = Transmit FIFO is full
1 = Transmit FIFO is not full
This bit is cleared when the TX FIFO is full.
0x1
0x0
UART Busy. This indicates that a serial transfer is in pro-
gress, when cleared indicates that the DW_apb_uart is idle
or inactive. 0 - DW_apb_uart is idle or inactive 1 -
DW_apb_uart is busy (actively transferring data) Note that it
is possible for the UART Busy bit to be cleared even though
a new character may have been sent from another device.
That is, if the DW_apb_uart has no data in the THR and RBR
and there is no transmission in progress and a start bit of a
new character has just reached the DW_apb_uart. This is
due to the fact that a valid start is not seen until the middle of
the bit period and this duration is dependent on the baud
divisor that has been programmed. If a second system clock
has been implemented (CLOCK_MODE == Enabled) the
assertion of this bit will also be delayed by several cycles of
the slower clock.
Table 300: UART2_TFL_REG (0x50001180)
Bit
Mode Symbol
UART_TRANSMIT_F Transmit FIFO Level.
IFO_LEVEL This is indicates the number of data entries in the transmit
FIFO.
Description
Reset
15:0
R
0x0
Table 301: UART2_RFL_REG (0x50001184)
Bit
Mode Symbol
UART_RECEIVE_FI
FO_LEVEL
Description
Reset
15:0
R
Receive FIFO Level.
This is indicates the number of data entries in the receive
FIFO.
0x0
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Table 302: UART2_SRR_REG (0x50001188)
Bit
15:3
2
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
W
UART_XFR
XMIT FIFO Reset.
This is a shadow register for the XMIT FIFO Reset bit
(FCR[2]). This can be used to remove the burden on soft-
ware having to store previously written FCR values (which
are pretty static) just to reset the transmit FIFO. This resets
the control portion of the transmit FIFO and treats the FIFO
as empty. Note that this bit is 'self-clearing'. It is not neces-
sary to clear this bit.
1
W
UART_RFR
RCVR FIFO Reset.
0x0
This is a shadow register for the RCVR FIFO Reset bit
(FCR[1]). This can be used to remove the burden on soft-
ware having to store previously written FCR values (which
are pretty static) just to reset the receive FIFO This resets
the control portion of the receive FIFO and treats the FIFO
as empty.
Note that this bit is 'self-clearing'. It is not necessary to clear
this bit.
0
W
UART_UR
UART Reset. This asynchronously resets the UART Ctrl and
synchronously removes the reset assertion. For a two clock
implementation both pclk and sclk domains are reset.
0x0
Table 303: UART2_SRTS_REG (0x5000118C)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
UART_SHADOW_R
EQUEST_TO_SEND
Shadow Request to Send.
This is a shadow register for the RTS bit (MCR[1]), this can
be used to remove the burden of having to
0x0
performing a read-modify-write on the MCR. This is used to
directly control the Request to Send (rts_n) output. The
Request To Send (rts_n) output is used to inform the modem
or data set that the UART Ctrl is ready to exchange data.
When Auto RTS Flow Control is not enabled (MCR[5] = 0),
the rts_n signal is set low by programming MCR[1] (RTS) to
a high.
In Auto Flow Control, AFCE_MODE == Enabled and active
(MCR[5] = 1) and FIFOs enable (FCR[0] = 1), the rts_n out-
put is controlled in the same way, but is also gated with the
receiver FIFO threshold trigger (rts_n is inactive high when
above the threshold).
Note that in Loopback mode (MCR[4] = 1), the rts_n output is
held inactive-high while the value of this location is internally
looped back to an input.
Table 304: UART2_SBCR_REG (0x50001190)
Bit
Mode Symbol
Description
Reset
15:1
-
-
Reserved
0x0
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Table 304: UART2_SBCR_REG (0x50001190)
Bit
Mode Symbol
R/W UART_SHADOW_B
REAK_CONTROL
Description
Reset
0
Shadow Break Control Bit.
0x0
This is a shadow register for the Break bit (LCR[6]), this can
be used to remove the burden of having to performing a read
modify write on the LCR. This is used to cause a break con-
dition to be transmitted to the receiving device.
If set to one the serial output is forced to the spacing (logic 0)
state. When not in Loopback Mode, as determined by
MCR[4], the sout line is forced low until the Break bit is
cleared.
If SIR_MODE active (MCR[6] = 1) the sir_out_n line is con-
tinuously pulsed. When in Loopback Mode, the break condi-
tion is internally looped back to the receiver.
Table 305: UART2_SDMAM_REG (0x50001194)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
UART_SHADOW_D
MA_MODE
Shadow DMA Mode.
0x0
This is a shadow register for the DMA mode bit (FCR[3]).
This can be used to remove the burden of having to store the
previously written value to the FCR in memory and having to
mask this value so that only the DMA Mode bit gets updated.
This determines the DMA signalling mode used for the
dma_tx_req_n and dma_rx_req_n output signals.
0 = mode 0
1 = mode 1
Table 306: UART2_SFE_REG (0x50001198)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
UART_SHADOW_FI
FO_ENABLE
Shadow FIFO Enable.
0x0
This is a shadow register for the FIFO enable bit (FCR[0]).
This can be used to remove the burden of having to store the
previously written value to the FCR in memory and having to
mask this value so that only the FIFO enable bit gets
updated.This enables/disables the transmit (XMIT) and
receive (RCVR) FIFOs. If this bit is set to zero (disabled)
after being enabled then both the XMIT and RCVR controller
portion of FIFOs are reset.
Table 307: UART2_SRT_REG (0x5000119C)
Bit
Mode Symbol
Description
Reset
15:2
-
-
Reserved
0x0
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Table 307: UART2_SRT_REG (0x5000119C)
Bit
Mode Symbol
R/W UART_SHADOW_R
CVR_TRIGGER
Description
Reset
1:0
Shadow RCVR Trigger.
0x0
This is a shadow register for the RCVR trigger bits
(FCR[7:6]). This can be used to remove the burden of having
to store the previously written value to the FCR in memory
and having to mask this value so that only the RCVR trigger
bit gets updated.
This is used to select the trigger level in the receiver FIFO at
which the Received Data Available Interrupt is generated. It
also determines when the dma_rx_req_n signal is asserted
when DMA Mode (FCR[3]) = 1. The following trigger levels
are supported:
00 = 1 character in the FIFO
01 = FIFO ¼ full
10 = FIFO ½ full
11 = FIFO 2 less than full
Table 308: UART2_STET_REG (0x500011A0)
Bit
Mode Symbol
Description
Reset
0x0
15:2
1:0
-
-
Reserved
R/W
UART_SHADOW_TX Shadow TX Empty Trigger.
_EMPTY_TRIGGER This is a shadow register for the TX empty trigger bits
0x0
(FCR[5:4]). This can be used to remove the burden of having
to store the previously written value to the FCR in memory
and having to mask this value so that only the TX empty trig-
ger bit gets updated.
This is used to select the empty threshold level at which the
THRE Interrupts are generated when the mode is active.
The following trigger levels are supported:
00 = FIFO empty
01 = 2 characters in the FIFO
10 = FIFO ¼ full
11 = FIFO ½ full
Table 309: UART2_HTX_REG (0x500011A4)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
UART_HALT_TX
This register is use to halt transmissions for testing, so that
the transmit FIFO can be filled by the master when FIFOs
are implemented and enabled.
0x0
0 = Halt TX disabled
1 = Halt TX enabled
Note, if FIFOs are implemented and not enabled, the setting
of the halt TX register has no effect on operation.
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Table 310: UART2_DMASA_REG (0x500011A8)
Bit
Mode Symbol
DMASA
Description
Reset
0
W
This register is use to perform DMA software acknowledge if
a transfer needs to be terminated due to an error condition.
For example, if the DMA disables the channel, then the
DW_apb_uart should clear its request. This will cause the
TX request, TX single, RX request and RX single signals to
de-assert. Note that this bit is 'self-clearing' and it is not nec-
essary to clear this bit.
0x0
Table 311: UART2_DLF_REG (0x500011C0)
Bit
Mode Symbol
R/W UART_DLF
Description
Reset
3:0
The fractional value is added to integer value set by DLH,
DLL. Fractional value is determined by (Divisor Fraction
value)/(2^DLF_SIZE).
0x0
Table 312: UART2_CPR_REG (0x500011F4)
Bit
Mode Symbol
CPR
Description
Reset
15:0
R
Component Parameter Register
0x3D71
Table 313: UART2_UCV_REG (0x500011F8)
Bit
Mode Symbol
UCV
Description
Reset
15:0
R
Component Version
0x33313
52A
Table 314: UART2_CTR_REG (0x500011FC)
Bit
Mode Symbol
CTR
Description
Reset
15:0
R
Component Type Register
0x44570
110
37.11 SPI REGISTER FILE
Table 315: Register map SPI
Address
Port
Description
0x50001200
0x50001202
0x50001204
0x50001206
0x50001208
0x50001300
0x50001302
0x50001304
0x50001306
0x50001308
SPI_CTRL_REG
SPI control register 0
SPI RX/TX register0
SPI RX/TX register1
SPI clear interrupt register
SPI control register 1
SPI control register 0
SPI RX/TX register0
SPI RX/TX register1
SPI clear interrupt register
SPI control register 1
SPI_RX_TX_REG0
SPI_RX_TX_REG1
SPI_CLEAR_INT_REG
SPI_CTRL_REG1
SPI2_CTRL_REG
SPI2_RX_TX_REG0
SPI2_RX_TX_REG1
SPI2_CLEAR_INT_REG
SPI2_CTRL_REG1
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Table 316: SPI_CTRL_REG (0x50001200)
Bit
Mode Symbol
Description
Reset
15
R/W
R/W
SPI_EN_CTRL
0 = SPI_EN pin disabled in slave mode. Pin SPI_EN is don't
care.
1 = SPI_EN pin enabled in slave mode.
0x0
14
13
SPI_MINT
0 = Disable SPI_INT_BIT to ICU
1 = Enable SPI_INT_BIT to ICU.
Note that the SPI_INT interrupt is shared with AD_INT inter-
rupt
0x0
R
SPI_INT_BIT
0 = RX Register or FIFO is empty.
0x0
1 = SPI interrupt. Data has been transmitted and received-
Must be reset by SW by writing to SPI_CLEAR_INT_REG.
12
11
10
9
R
SPI_DI
Returns the actual value of pin SPI_DIN (delayed with two
internal SPI clock cycles)
0x0
0x0
0x0
0x0
R
SPI_TXH
0 = TX-FIFO is not full, data can be written.
1 = TX-FIFO is full, data can not be written.
R/W
R/W
SPI_FORCE_DO
SPI_RST
0 = normal operation
1 = Force SPIDO output level to value of SPI_DO.
0 = normal operation
1 = Reset SPI. Same function as SPI_ON except that inter-
nal clock remain active.
8:7
6
R/W
R/W
SPI_WORD
SPI_SMN
00 = 8 bits mode, only SPI_RX_TX_REG0 used
01 = 16 bit mode, only SPI_RX_TX_REG0 used
10 = 32 bits mode, SPI_RX_TX_REG0 &
SPI_RX_TX_REG1 used
0x0
0x0
11 = 9 bits mode. Only valid in master mode.
Master/slave mode
0 = Master,
1 = Slave(SPI1 only)
5
R/W
R/W
SPI_DO
Pin SPI_DO output level when SPI is idle or when
SPI_FORCE_DO=1
0x0
0x0
4:3
SPI_CLK
Select SPI_CLK clock output frequency in master mode:
00 = SPI_CLK / 8
01 = SPI_CLK / 4
10 = SPI_CLK / 2
11 = SPI_CLK / 14
2
R/W
SPI_POL
Select SPI_CLK polarity.
0 = SPI_CLK is initially low.
1 = SPI_CLK is initially high.
0x0
1
0
R/W
R/W
SPI_PHA
SPI_ON
Select SPI_CLK phase. See functional timing diagrams in
SPI chapter
0x0
0x0
0 = SPI Module switched off (power saving). Everything is
reset except SPI_CTRL_REG0 and SPI_CTRL_REG1.
When this bit is cleared the SPI will remain active in master
mode until the shift register and holding register are both
empty.
1 = SPI Module switched on. Should only be set after all con-
trol bits have their desired values. So two writes are needed!
Table 317: SPI_RX_TX_REG0 (0x50001202)
Bit
Mode Symbol
R0/W SPI_DATA0
Description
Reset
15:0
Write: SPI_TX_REG0 output register 0 (TX-FIFO)
Read: SPI_RX_REG0 input register 0 (RX-FIFO)
In 8 or 9 bits mode bits 15 to 8 are not used, they contain old
data.
0x0
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Table 318: SPI_RX_TX_REG1 (0x50001204)
Bit
Mode Symbol
R0/W SPI_DATA1
Description
Reset
15:0
Write: SPI_TX_REG1 output register 1 (MSB's of TX-FIFO)
Read: SPI_RX_REG1 input register 1 (MSB's of RX-FIFO)
In 8 or 9 or 16 bits mode bits this register is not used.
0x0
Table 319: SPI_CLEAR_INT_REG (0x50001206)
Bit
Mode Symbol
R0/W SPI_CLEAR_INT
Description
Reset
15:0
Writing any value to this register will clear the
SPI_CTRL_REG[SPI_INT_BIT]
Reading returns 0.
0x0
Table 320: SPI_CTRL_REG1 (0x50001208)
Bit
15:5
4
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
R
SPI_9BIT_VAL
SPI_BUSY
Determines the value of the first bit in 9 bits SPI mode.
0x0
3
0 = The SPI is not busy with a transfer. This means that
either no TX-data is available or that the transfers have been
suspended due to a full RX-FIFO. The
0x0
SPIx_CTRL_REG0[SPI_INT_BIT] can be used to distinguish
between these situations.
1 = The SPI is busy with a transfer.
2
R/W
R/W
SPI_PRIORITY
0 = The SPI has low priority, the DMA request signals are
reset after the corresponding acknowledge.
1 = The SPI has high priority, DMA request signals remain
active until the FIFOS are filled/emptied, so the DMA holds
the AHB bus.
0x0
0x3
1:0
SPI_FIFO_MODE
0: TX-FIFO and RX-FIFO used (Bidirectional mode).
1: RX-FIFO used (Read Only Mode) TX-FIFO single depth,
no flow control
2: TX-FIFO used (Write Only Mode), RX-FIFO single depth,
no flow control
3: No FIFOs used (backwards compatible mode)
Table 321: SPI2_CTRL_REG (0x50001300)
Bit
Mode Symbol
Description
Reset
15
R/W
R/W
SPI_EN_CTRL
0 = SPI_EN pin disabled in slave mode. Pin SPI_EN is don't
care.
1 = SPI_EN pin enabled in slave mode.
0x0
14
13
SPI_MINT
0 = Disable SPI_INT_BIT to ICU
1 = Enable SPI_INT_BIT to ICU.
Note that the SPI_INT interrupt is shared with AD_INT inter-
rupt
0x0
0x0
R
SPI_INT_BIT
0 = RX Register or FIFO is empty.
1 = SPI interrupt. Data has been transmitted and received-
Must be reset by SW by writing to SPI_CLEAR_INT_REG.
12
11
R
R
SPI_DI
Returns the actual value of pin SPI_DIN (delayed with two
internal SPI clock cycles)
0x0
0x0
SPI_TXH
0 = TX-FIFO is not full, data can be written.
1 = TX-FIFO is full, data can not be written.
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Table 321: SPI2_CTRL_REG (0x50001300)
Bit
Mode Symbol
Description
Reset
10
R/W
SPI_FORCE_DO
0 = normal operation
0x0
1 = Force SPIDO output level to value of SPI_DO.
9
R/W
SPI_RST
0 = normal operation
0x0
1 = Reset SPI. Same function as SPI_ON except that inter-
nal clock remain active.
8:7
R/W
R/W
SPI_WORD
00 = 8 bits mode, only SPI_RX_TX_REG0 used
01 = 16 bit mode, only SPI_RX_TX_REG0 used
10 = 32 bits mode, SPI_RX_TX_REG0 &
SPI_RX_TX_REG1 used
0x0
0x0
11 = 9 bits mode. Only valid in master mode.
6
SPI_SMN
Master/slave mode
0 = Master,
1 = Slave(SPI1 only)
5
R/W
R/W
SPI_DO
Pin SPI_DO output level when SPI is idle or when
SPI_FORCE_DO=1
0x0
0x0
4:3
SPI_CLK
Select SPI_CLK clock output frequency in master mode:
00 = SPI_CLK / 8
01 = SPI_CLK / 4
10 = SPI_CLK / 2
11 = SPI_CLK / 14
2
R/W
SPI_POL
Select SPI_CLK polarity.
0 = SPI_CLK is initially low.
1 = SPI_CLK is initially high.
0x0
1
0
R/W
R/W
SPI_PHA
SPI_ON
Select SPI_CLK phase. See functional timing diagrams in
SPI chapter
0x0
0x0
0 = SPI Module switched off (power saving). Everything is
reset except SPI_CTRL_REG0 and SPI_CTRL_REG1.
When this bit is cleared the SPI will remain active in master
mode until the shift register and holding register are both
empty.
1 = SPI Module switched on. Should only be set after all con-
trol bits have their desired values. So two writes are needed!
Table 322: SPI2_RX_TX_REG0 (0x50001302)
Bit
Mode Symbol
R0/W SPI_DATA0
Description
Reset
15:0
Write: SPI_TX_REG0 output register 0 (TX-FIFO)
Read: SPI_RX_REG0 input register 0 (RX-FIFO)
In 8 or 9 bits mode bits 15 to 8 are not used, they contain old
data.
0x0
Table 323: SPI2_RX_TX_REG1 (0x50001304)
Bit
Mode Symbol
R0/W SPI_DATA1
Description
Reset
15:0
Write: SPI_TX_REG1 output register 1 (MSB's of TX-FIFO)
Read: SPI_RX_REG1 input register 1 (MSB's of RX-FIFO)
In 8 or 9 or 16 bits mode bits this register is not used.
0x0
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Table 324: SPI2_CLEAR_INT_REG (0x50001306)
Bit
Mode Symbol
R0/W SPI_CLEAR_INT
Description
Reset
15:0
Writing any value to this register will clear the
SPI_CTRL_REG[SPI_INT_BIT]
Reading returns 0.
0x0
Table 325: SPI2_CTRL_REG1 (0x50001308)
Bit
15:5
4
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
R
SPI_9BIT_VAL
SPI_BUSY
Determines the value of the first bit in 9 bits SPI mode.
0x0
3
0 = The SPI is not busy with a transfer. This means that
either no TX-data is available or that the transfers have been
suspended due to a full RX-FIFO. The
0x0
SPIx_CTRL_REG0[SPI_INT_BIT] can be used to distinguish
between these situations.
1 = The SPI is busy with a transfer.
2
R/W
R/W
SPI_PRIORITY
0 = The SPI has low priority, the DMA request signals are
reset after the corresponding acknowledge.
1 = The SPI has high priority, DMA request signals remain
active until the FIFOS are filled/emptied, so the DMA holds
the AHB bus.
0x0
0x3
1:0
SPI_FIFO_MODE
0: TX-FIFO and RX-FIFO used (Bidirectional mode).
1: RX-FIFO used (Read Only Mode) TX-FIFO single depth,
no flow control
2: TX-FIFO used (Write Only Mode), RX-FIFO single depth,
no flow control
3: No FIFOs used (backwards compatible mode)
37.12 I2C REGISTER FILE
Table 326: Register map I2C
Address
Port
Description
0x50001400
0x50001404
0x50001408
0x5000140C
0x50001410
0x50001414
0x50001418
0x5000141C
0x50001420
0x5000142C
0x50001430
0x50001434
0x50001438
0x5000143C
0x50001440
0x50001444
0x50001448
0x5000144C
I2C_CON_REG
I2C Control Register
I2C Target Address Register
I2C Slave Address Register
I2C_TAR_REG
I2C_SAR_REG
I2C_HS_MADDR_REG
I2C_DATA_CMD_REG
I2C_SS_SCL_HCNT_REG
I2C_SS_SCL_LCNT_REG
I2C_FS_SCL_HCNT_REG
I2C_FS_SCL_LCNT_REG
I2C_INTR_STAT_REG
I2C_INTR_MASK_REG
I2C_RAW_INTR_STAT_REG
I2C_RX_TL_REG
I2C High Speed Master Mode Code Address Register
I2C Rx/Tx Data Buffer and Command Register
Standard Speed I2C Clock SCL High Count Register
Standard Speed I2C Clock SCL Low Count Register
Fast Speed I2C Clock SCL High Count Register
Fast Speed I2C Clock SCL Low Count Register
I2C Interrupt Status Register
I2C Interrupt Mask Register
I2C Raw Interrupt Status Register
I2C Receive FIFO Threshold Register
I2C Transmit FIFO Threshold Register
Clear Combined and Individual Interrupt Register
Clear RX_UNDER Interrupt Register
I2C_TX_TL_REG
I2C_CLR_INTR_REG
I2C_CLR_RX_UNDER_REG
I2C_CLR_RX_OVER_REG
I2C_CLR_TX_OVER_REG
Clear RX_OVER Interrupt Register
Clear TX_OVER Interrupt Register
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Table 326: Register map I2C
Address
Port
Description
0x50001450
0x50001454
0x50001458
0x5000145C
0x50001460
0x50001464
0x50001468
0x5000146C
0x50001470
0x50001474
0x50001478
0x5000147C
0x50001480
0x50001488
0x5000148C
0x50001490
0x50001494
0x50001498
0x5000149C
0x500014A0
0x500014F4
0x500014F6
0x500014F8
0x500014FA
0x500014FC
0x500014FE
0x50001500
0x50001504
0x50001508
0x5000150C
0x50001510
0x50001514
0x50001518
0x5000151C
0x50001520
0x5000152C
0x50001530
0x50001534
0x50001538
0x5000153C
0x50001540
0x50001544
0x50001548
0x5000154C
I2C_CLR_RD_REQ_REG
I2C_CLR_TX_ABRT_REG
I2C_CLR_RX_DONE_REG
I2C_CLR_ACTIVITY_REG
I2C_CLR_STOP_DET_REG
I2C_CLR_START_DET_REG
I2C_CLR_GEN_CALL_REG
I2C_ENABLE_REG
Clear RD_REQ Interrupt Register
Clear TX_ABRT Interrupt Register
Clear RX_DONE Interrupt Register
Clear ACTIVITY Interrupt Register
Clear STOP_DET Interrupt Register
Clear START_DET Interrupt Register
Clear GEN_CALL Interrupt Register
I2C Enable Register
I2C_STATUS_REG
I2C Status Register
I2C_TXFLR_REG
I2C Transmit FIFO Level Register
I2C Receive FIFO Level Register
I2C SDA Hold Time Length Register
I2C Transmit Abort Source Register
DMA Control Register
I2C_RXFLR_REG
I2C_SDA_HOLD_REG
I2C_TX_ABRT_SOURCE_REG
I2C_DMA_CR_REG
I2C_DMA_TDLR_REG
I2C_DMA_RDLR_REG
I2C_SDA_SETUP_REG
I2C_ACK_GENERAL_CALL_REG
I2C_ENABLE_STATUS_REG
I2C_IC_FS_SPKLEN_REG
I2C_COMP_PARAM1_REG
I2C_COMP_PARAM2_REG
I2C_COMP_VERSION_REG
I2C_COMP2_VERSION
I2C_COMP_TYPE_REG
I2C_COMP_TYPE2_REG
I2C2_CON_REG
DMA Transmit Data Level Register
I2C Receive Data Level Register
I2C SDA Setup Register
I2C ACK General Call Register
I2C Enable Status Register
I2C SS and FS spike suppression limit Size
Component Parameter Register
Component Parameter Register 2
I2C Component Version Register
I2C Component2 Version Register
I2C Component Type Register
I2C Component2 Type Register
I2C Control Register
I2C2_TAR_REG
I2C Target Address Register
I2C Slave Address Register
I2C2_SAR_REG
I2C2_HS_MADDR_REG
I2C2_DATA_CMD_REG
I2C2_SS_SCL_HCNT_REG
I2C2_SS_SCL_LCNT_REG
I2C2_FS_SCL_HCNT_REG
I2C2_FS_SCL_LCNT_REG
I2C2_INTR_STAT_REG
I2C2_INTR_MASK_REG
I2C2_RAW_INTR_STAT_REG
I2C2_RX_TL_REG
I2C High Speed Master Mode Code Address Register
I2C Rx/Tx Data Buffer and Command Register
Standard Speed I2C Clock SCL High Count Register
Standard Speed I2C Clock SCL Low Count Register
Fast Speed I2C Clock SCL High Count Register
Fast Speed I2C Clock SCL Low Count Register
I2C Interrupt Status Register
I2C Interrupt Mask Register
I2C Raw Interrupt Status Register
I2C Receive FIFO Threshold Register
I2C Transmit FIFO Threshold Register
Clear Combined and Individual Interrupt Register
Clear RX_UNDER Interrupt Register
I2C2_TX_TL_REG
I2C2_CLR_INTR_REG
I2C2_CLR_RX_UNDER_REG
I2C2_CLR_RX_OVER_REG
I2C2_CLR_TX_OVER_REG
Clear RX_OVER Interrupt Register
Clear TX_OVER Interrupt Register
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Table 326: Register map I2C
Address
Port
Description
0x50001550
0x50001554
0x50001558
0x5000155C
0x50001560
0x50001564
0x50001568
0x5000156C
0x50001570
0x50001574
0x50001578
0x5000157C
0x50001580
0x50001588
0x5000158C
0x50001590
0x50001594
0x50001598
0x5000159C
0x500015A0
0x500015F4
0x500015F6
0x500015F8
0x500015FA
0x500015FC
0x500015FE
I2C2_CLR_RD_REQ_REG
I2C2_CLR_TX_ABRT_REG
I2C2_CLR_RX_DONE_REG
I2C2_CLR_ACTIVITY_REG
I2C2_CLR_STOP_DET_REG
I2C2_CLR_START_DET_REG
I2C2_CLR_GEN_CALL_REG
I2C2_ENABLE_REG
Clear RD_REQ Interrupt Register
Clear TX_ABRT Interrupt Register
Clear RX_DONE Interrupt Register
Clear ACTIVITY Interrupt Register
Clear STOP_DET Interrupt Register
Clear START_DET Interrupt Register
Clear GEN_CALL Interrupt Register
I2C Enable Register
I2C2_STATUS_REG
I2C Status Register
I2C2_TXFLR_REG
I2C Transmit FIFO Level Register
I2C Receive FIFO Level Register
I2C SDA Hold Time Length Register
I2C Transmit Abort Source Register
DMA Control Register
I2C2_RXFLR_REG
I2C2_SDA_HOLD_REG
I2C2_TX_ABRT_SOURCE_REG
I2C2_DMA_CR_REG
I2C2_DMA_TDLR_REG
I2C2_DMA_RDLR_REG
I2C2_SDA_SETUP_REG
I2C2_ACK_GENERAL_CALL_REG
I2C2_ENABLE_STATUS_REG
I2C2_IC_FS_SPKLEN_REG
I2C2_COMP_PARAM1_REG
I2C2_COMP_PARAM2_REG
I2C2_COMP_VERSION_REG
I2C2_COMP2_VERSION
I2C2_COMP_TYPE_REG
I2C2_COMP_TYPE2_REG
DMA Transmit Data Level Register
I2C Receive Data Level Register
I2C SDA Setup Register
I2C ACK General Call Register
I2C Enable Status Register
I2C SS and FS spike suppression limit Size
Component Parameter Register
Component Parameter Register 2
I2C Component Version Register
I2C Component2 Version Register
I2C Component Type Register
I2C Component2 Type Register
Table 327: I2C_CON_REG (0x50001400)
Bit
15:7
6
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x1
R/W
I2C_SLAVE_DISABL
E
Slave enabled or disabled after reset is applied, which
means software does not have to configure the slave.
0=slave is enabled
1=slave is disabled
Software should ensure that if this bit is written with '0', then
bit 0 should also be written with a '0'.
5
4
3
R/W
R/W
R/W
I2C_RESTART_EN
Determines whether RESTART conditions may be sent
when acting as a master
0= disable
0x1
1=enable
I2C_10BITADDR_MA Controls whether the controller starts its transfers in 7- or 10- 0x1
STER
bit addressing mode when acting as a master.
0= 7-bit addressing
1= 10-bit addressing
I2C_10BITADDR_SL
AVE
When acting as a slave, this bit controls whether the control- 0x1
ler responds to 7- or 10-bit addresses.
0= 7-bit addressing
1= 10-bit addressing
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Table 327: I2C_CON_REG (0x50001400)
Bit
Mode Symbol
Description
Reset
2:1
R/W
R/W
I2C_SPEED
These bits control at which speed the controller operates.
1= standard mode (100 kbit/s)
2= fast mode (400 kbit/s)
0x2
0
I2C_MASTER_MOD
E
This bit controls whether the controller master is enabled.
0= master disabled
0x1
1= master enabled
Software should ensure that if this bit is written with '1' then
bit 6 should also be written with a '1'.
Table 328: I2C_TAR_REG (0x50001404)
Bit
Mode Symbol
Description
Reset
0x0
15:12
11
-
-
Reserved
R/W
SPECIAL
This bit indicates whether software performs a General Call
0x0
or
START BYTE command.
0: ignore bit 10 GC_OR_START and use IC_TAR normally
1: perform special I2C command as specified in
GC_OR_START
bit
10
R/W
GC_OR_START
If bit 11 (SPECIAL) is set to 1, then this bit indicates whether
a General Call or START byte command is to be performed
by the controller.
0x0
0: General Call Address - after issuing a General Call, only
writes may be performed. Attempting to issue a read com-
mand results in setting bit 6 (TX_ABRT) of the
IC_RAW_INTR_STAT register. The controller remains in
General Call mode until the SPECIAL bit value (bit 11) is
cleared.
1: START BYTE
9:0
R/W
IC_TAR
This is the target address for any master transaction. When
transmitting a General Call, these bits are ignored. To gener-
ate a START BYTE, the CPU needs to write only once into
these bits.
0x55
Note: If the IC_TAR and IC_SAR are the same, loopback
exists but the FIFOs are shared between master and slave,
so full loopback is not feasible. Only one direction loopback
mode is supported (simplex), not duplex. A master cannot
transmit to itself; it can transmit to only a slave
Writes to this register succeed only when IC_ENABLE[0] is
set to 0
Table 329: I2C_SAR_REG (0x50001408)
Bit
Mode Symbol
Description
Reset
15:10
9:0
-
-
Reserved
0x0
R/W
IC_SAR
The IC_SAR holds the slave address when the I2C is operat- 0x55
ing as a slave. For 7-bit addressing, only IC_SAR[6:0] is
used. This register can be written only when the I2C inter-
face is disabled, which corresponds to the IC_ENABLE reg-
ister being set to 0. Writes at other times have no effect.
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Table 330: I2C_HS_MADDR_REG (0x5000140C)
Bit
Mode Symbol
R/W IIC_HS_MAR
Description
Reset
2:0
This bit field holds the value of the I2C HS mode master
code.
0x1
Table 331: I2C_DATA_CMD_REG (0x50001410)
Bit
15:9
8
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
CMD
This bit controls whether a read or a write is performed. This
bit does not control the direction when the I2C Ctrl acts as a
slave. It controls only the direction when it acts as a master.
1 = Read
0x0
0 = Write
When a command is entered in the TX FIFO, this bit distin-
guishes the write and read commands. In slave-receiver
mode, this bit is a "don't care" because writes to this register
are not required. In slave-transmitter mode, a "0" indicates
that CPU data is to be transmitted and as DAT or
IC_DATA_CMD[7:0]. When programming this bit, you should
remember the following: attempting to perform a read opera-
tion after a General Call command has been sent results in a
TX_ABRT interrupt (bit 6 of the
I2C_RAW_INTR_STAT_REG), unless bit 11 (SPECIAL) in
the I2C_TAR register has been cleared.
If a "1" is written to this bit after receiving a RD_REQ inter-
rupt, then a TX_ABRT interrupt occurs.
NOTE: It is possible that while attempting a master I2C read
transfer on the controller, a RD_REQ interrupt may have
occurred simultaneously due to a remote I2C master
addressing the controller. In this type of scenario, it ignores
the I2C_DATA_CMD write, generates a TX_ABRT interrupt,
and waits to service the RD_REQ interrupt
7:0
R/W
DAT
This register contains the data to be transmitted or received
on the I2C bus. If you are writing to this register and want to
perform a read, bits 7:0 (DAT) are ignored by the controller.
However, when you read this register, these bits return the
value of data received on the controller's interface.
0x0
Table 332: I2C_SS_SCL_HCNT_REG (0x50001414)
Bit
Mode Symbol
R/W IC_SS_SCL_HCNT
Description
Reset
15:0
This register must be set before any I2C bus transaction can
take place to ensure proper I/O timing. This register sets the
SCL clock high-period count for standard speed. This regis-
ter can be written only when the I2C interface is disabled
which corresponds to the IC_ENABLE register being set to
0. Writes at other
0x48
times have no effect.
The minimum valid value is 6; hardware prevents values less
than this being written, and if attempted results in 6 being
set.
NOTE: This register must not be programmed to a value
higher than 65525, because the controller uses a 16-bit
counter to flag an I2C bus idle condition when this counter
reaches a value of IC_SS_SCL_HCNT + 10.
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Table 333: I2C_SS_SCL_LCNT_REG (0x50001418)
Bit
Mode Symbol
R/W IC_SS_SCL_LCNT
Description
Reset
15:0
This register must be set before any I2C bus transaction can
take place to ensure proper I/O timing. This register sets the
SCL clock low period count for standard speed.
This register can be written only when the I2C interface is
disabled which corresponds to the I2C_ENABLE register
being set to 0. Writes at other times have no effect.
The minimum valid value is 8; hardware prevents values less
than this being written, and if attempted, results in 8 being
set.
0x4F
Table 334: I2C_FS_SCL_HCNT_REG (0x5000141C)
Bit
Mode Symbol
R/W IC_FS_SCL_HCNT
Description
Reset
15:0
This register must be set before any I2C bus transaction can
take place to ensure proper I/O timing. This register sets the
SCL clock high-period count for fast speed. It is used in high-
speed mode to send the Master Code and START BYTE or
General CALL. This register can be written only when the
I2C interface is disabled, which corresponds to the
I2C_ENABLE register being set to 0. Writes at other times
have no effect.
0x8
The minimum valid value is 6; hardware prevents values less
than this being written, and if attempted results in 6 being
set.
Table 335: I2C_FS_SCL_LCNT_REG (0x50001420)
Bit
Mode Symbol
R/W IC_FS_SCL_LCNT
Description
Reset
15:0
This register must be set before any I2C bus transaction can
take place to ensure proper I/O timing. This register sets the
SCL clock low-period count for fast speed. It is used in high-
speed mode to send the Master Code and START BYTE or
General CALL. This register can be written only when the
I2C interface is disabled, which corresponds to the
I2C_ENABLE register being set to 0. Writes at other times
have no effect.
0x17
The minimum valid value is 8; hardware prevents values less
than this being written, and if attempted results in 8 being
set. For designs with APB_DATA_WIDTH = 8 the order of
programming is important to ensure the correct operation of
the controller. The lower byte must be programmed first.
Then the upper byte is programmed.
Table 336: I2C_INTR_STAT_REG (0x5000142C)
Bit
Mode Symbol
Description
Reset
0x0
15:12
11
-
-
Reserved
R
R_GEN_CALL
Set only when a General Call address is received and it is
acknowledged. It stays set until it is cleared either by disa-
bling controller or when the CPU reads bit 0 of the
I2C_CLR_GEN_CALL register. The controller stores the
received data in the Rx buffer.
0x0
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Table 336: I2C_INTR_STAT_REG (0x5000142C)
Bit
Mode Symbol
Description
Reset
10
R
R
R
R_START_DET
Indicates whether a START or RESTART condition has
occurred on the I2C interface regardless of whether control-
ler is operating in slave or master mode.
0x0
0x0
0x0
9
8
R_STOP_DET
R_ACTIVITY
Indicates whether a STOP condition has occurred on the I2C
interface regardless of whether controller is operating in
slave or master mode.
This bit captures I2C Ctrl activity and stays set until it is
cleared. There are four ways to clear it:
=> Disabling the I2C Ctrl
=> Reading the IC_CLR_ACTIVITY register
=> Reading the IC_CLR_INTR register
=> System reset
Once this bit is set, it stays set unless one of the four meth-
ods is used to clear it. Even if the controller module is idle,
this bit remains set until cleared, indicating that there was
activity on the bus.
7
6
R
R
R_RX_DONE
R_TX_ABRT
When the controller is acting as a slave-transmitter, this bit is
set to 1 if the master does not acknowledge a transmitted
byte. This occurs on the last byte of the transmission, indi-
cating that the transmission is done.
0x0
0x0
This bit indicates if the controller, as an I2C transmitter, is
unable to complete the intended actions on the contents of
the transmit FIFO. This situation can occur both as an I2C
master or an I2C slave, and is referred to as a "transmit
abort".
When this bit is set to 1, the I2C_TX_ABRT_SOURCE regis-
ter indicates the reason why the transmit abort takes places.
NOTE: The controller flushes/resets/empties the TX FIFO
whenever this bit is set. The TX FIFO remains in this flushed
state until the register I2C_CLR_TX_ABRT is read. Once
this read is performed, the TX FIFO is then ready to accept
more data bytes from the APB interface.
5
R
R_RD_REQ
This bit is set to 1 when the controller is acting as a slave
and another I2C master is attempting to read data from the
controller. The controller holds the I2C bus in a wait state
(SCL=0) until this interrupt is serviced, which means that the
slave has been addressed by a remote master that is asking
for data to be transferred. The processor must respond to
this interrupt and then write the requested data to the
I2C_DATA_CMD register. This bit is set to 0 just after the
processor reads the I2C_CLR_RD_REQ register
0x0
4
3
R
R
R_TX_EMPTY
This bit is set to 1 when the transmit buffer is at or below the
threshold value set in the I2C_TX_TL register. It is automati-
cally cleared by hardware when the buffer level goes above
the threshold. When the IC_ENABLE bit 0 is 0, the TX FIFO
is flushed and held in reset. There the TX FIFO looks like it
has no data within it, so this bit is set to 1, provided there is
activity in the master or slave state machines. When there is
no longer activity, then with ic_en=0, this bit is set to 0.
0x0
0x0
R_TX_OVER
Set during transmit if the transmit buffer is filled to 32 and the
processor attempts to issue another I2C command by writing
to the IC_DATA_CMD register. When the module is disabled,
this bit keeps its level until the master or slave state
machines go into idle, and when ic_en goes to 0, this inter-
rupt is cleared
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Table 336: I2C_INTR_STAT_REG (0x5000142C)
Bit
Mode Symbol
Description
Reset
0x0
2
R
R_RX_FULL
Set when the receive buffer reaches or goes above the
RX_TL threshold in the I2C_RX_TL register. It is automati-
cally cleared by hardware when buffer level goes below the
threshold. If the module is disabled (I2C_ENABLE[0]=0), the
RX FIFO is flushed and held in reset; therefore the RX FIFO
is not full. So this bit is cleared once the I2C_ENABLE bit 0 is
programmed with a 0, regardless of the activity that contin-
ues.
1
0
R
R
R_RX_OVER
Set if the receive buffer is completely filled to 32 and an addi- 0x0
tional byte is received from an external I2C device. The con-
troller acknowledges this, but any data bytes received after
the FIFO is full are lost. If the module is disabled
(I2C_ENABLE[0]=0), this bit keeps its level until the master
or slave state machines go into idle, and when ic_en goes to
0, this interrupt is cleared.
R_RX_UNDER
Set if the processor attempts to read the receive buffer when
it is empty by reading from the IC_DATA_CMD register. If the
module is disabled (I2C_ENABLE[0]=0), this bit keeps its
level until the master or slave state machines go into idle,
and when ic_en goes to 0, this interrupt is cleared.
0x0
Table 337: I2C_INTR_MASK_REG (0x50001430)
Bit
Mode Symbol
Description
Reset
0x0
15:12
11
-
-
Reserved
R/W
M_GEN_CALL
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
0x1
10
9
8
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
M_START_DET
M_STOP_DET
M_ACTIVITY
M_RX_DONE
M_TX_ABRT
M_RD_REQ
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
0x0
0x0
0x0
0x1
0x1
0x1
0x1
0x1
0x1
0x1
0x1
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
M_TX_EMPTY
M_TX_OVER
M_RX_FULL
M_RX_OVER
M_RX_UNDER
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
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Table 338: I2C_RAW_INTR_STAT_REG (0x50001434)
Bit
Mode Symbol
Description
Reset
15:12
11
-
-
Reserved
0x0
0x0
R
GEN_CALL
Set only when a General Call address is received and it is
acknowledged. It stays set until it is cleared either by disa-
bling controller or when the CPU reads bit 0 of the
I2C_CLR_GEN_CALL register. I2C Ctrl stores the received
data in the Rx buffer.
10
9
R
R
R
START_DET
STOP_DET
ACTIVITY
Indicates whether a START or RESTART condition has
occurred on the I2C interface regardless of whether control-
ler is operating in slave or master mode.
0x0
0x0
0x0
Indicates whether a STOP condition has occurred on the I2C
interface regardless of whether controller is operating in
slave or master mode.
8
This bit captures I2C Ctrl activity and stays set until it is
cleared. There are four ways to clear it:
=> Disabling the I2C Ctrl
=> Reading the IC_CLR_ACTIVITY register
=> Reading the IC_CLR_INTR register
=> System reset
Once this bit is set, it stays set unless one of the four meth-
ods is used to clear it. Even if the controller module is idle,
this bit remains set until cleared, indicating that there was
activity on the bus.
7
6
R
R
RX_DONE
TX_ABRT
When the controller is acting as a slave-transmitter, this bit is
set to 1 if the master does not acknowledge a transmitted
byte. This occurs on the last byte of the transmission, indi-
cating that the transmission is done.
0x0
0x0
This bit indicates if the controller, as an I2C transmitter, is
unable to complete the intended actions on the contents of
the transmit FIFO. This situation can occur both as an I2C
master or an I2C slave, and is referred to as a "transmit
abort".
When this bit is set to 1, the I2C_TX_ABRT_SOURCE regis-
ter indicates the reason why the transmit abort takes places.
NOTE: The controller flushes/resets/empties the TX FIFO
whenever this bit is set. The TX FIFO remains in this flushed
state until the register I2C_CLR_TX_ABRT is read. Once
this read is performed, the TX FIFO is then ready to accept
more data bytes from the APB interface.
5
R
RD_REQ
This bit is set to 1 when I2C Ctrl is acting as a slave and
another I2C master is attempting to read data from the con-
troller. The controller holds the I2C bus in a wait state
(SCL=0) until this interrupt is serviced, which means that the
slave has been addressed by a remote master that is asking
for data to be transferred. The processor must respond to
this interrupt and then write the requested data to the
I2C_DATA_CMD register. This bit is set to 0 just after the
processor reads the I2C_CLR_RD_REQ register
0x0
4
R
TX_EMPTY
This bit is set to 1 when the transmit buffer is at or below the
threshold value set in the I2C_TX_TL register. It is automati-
cally cleared by hardware when the buffer level goes above
the threshold. When the IC_ENABLE bit 0 is 0, the TX FIFO
is flushed and held in reset. There the TX FIFO looks like it
has no data within it, so this bit is set to 1, provided there is
activity in the master or slave state machines. When there is
no longer activity, then with ic_en=0, this bit is set to 0.
0x0
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Table 338: I2C_RAW_INTR_STAT_REG (0x50001434)
Bit
Mode Symbol
Description
Reset
3
R
TX_OVER
Set during transmit if the transmit buffer is filled to 32 and the
processor attempts to issue another I2C command by writing
to the IC_DATA_CMD register. When the module is disabled,
this bit keeps its level until the master or slave state
machines go into idle, and when ic_en goes to 0, this inter-
rupt is cleared
0x0
2
R
RX_FULL
Set when the receive buffer reaches or goes above the
RX_TL threshold in the I2C_RX_TL register. It is automati-
cally cleared by hardware when buffer level goes below the
threshold. If the module is disabled (I2C_ENABLE[0]=0), the
RX FIFO is flushed and held in reset; therefore the RX FIFO
is not full. So this bit is cleared once the I2C_ENABLE bit 0 is
programmed with a 0, regardless of the activity that contin-
ues.
0x0
1
0
R
R
RX_OVER
Set if the receive buffer is completely filled to 32 and an addi- 0x0
tional byte is received from an external I2C device. The con-
troller acknowledges this, but any data bytes received after
the FIFO is full are lost. If the module is disabled
(I2C_ENABLE[0]=0), this bit keeps its level until the master
or slave state machines go into idle, and when ic_en goes to
0, this interrupt is cleared.
RX_UNDER
Set if the processor attempts to read the receive buffer when
it is empty by reading from the IC_DATA_CMD register. If the
module is disabled (I2C_ENABLE[0]=0), this bit keeps its
level until the master or slave state machines go into idle,
and when ic_en goes to 0, this interrupt is cleared.
0x0
Table 339: I2C_RX_TL_REG (0x50001438)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:0
-
-
Reserved
R/W
RX_TL
Receive FIFO Threshold Level Controls the level of entries
(or above) that triggers the RX_FULL interrupt (bit 2 in
I2C_RAW_INTR_STAT register). The valid range is 0-31,
with the additional restriction that hardware does not allow
this value to be set to a value larger than the depth of the
buffer. If an attempt is made to do that, the actual value set
will be the maximum depth of the buffer. A value of 0 sets the
threshold for 1 entry, and a value of 31 sets the threshold for
32 entries.
0x0
Table 340: I2C_TX_TL_REG (0x5000143C)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:0
-
-
Reserved
R/W
RX_TL
Transmit FIFO Threshold Level Controls the level of entries
(or below) that trigger the TX_EMPTY interrupt (bit 4 in
I2C_RAW_INTR_STAT register). The valid range is 0-31,
with the additional restriction that it may not be set to value
larger than the depth of the buffer. If an attempt is made to
do that, the actual value set will be the maximum depth of
the buffer. A value of 0 sets the threshold for 0 entries, and a
value of 31 sets the threshold for 32 entries..
0x0
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Table 341: I2C_CLR_INTR_REG (0x50001440)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CLR_INTR
Read this register to clear the combined interrupt, all individ- 0x0
ual interrupts, and the I2C_TX_ABRT_SOURCE register.
This bit does not clear hardware clearable interrupts but soft-
ware clearable interrupts. Refer to Bit 9 of the
I2C_TX_ABRT_SOURCE register for an exception to clear-
ing I2C_TX_ABRT_SOURCE
Table 342: I2C_CLR_RX_UNDER_REG (0x50001444)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CLR_RX_UNDER
Read this register to clear the RX_UNDER interrupt (bit 0) of
0x0
the
I2C_RAW_INTR_STAT register.
Table 343: I2C_CLR_RX_OVER_REG (0x50001448)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CLR_RX_OVER
Read this register to clear the RX_OVER interrupt (bit 1) of
0x0
the
I2C_RAW_INTR_STAT register.
Table 344: I2C_CLR_TX_OVER_REG (0x5000144C)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CLR_TX_OVER
Read this register to clear the TX_OVER interrupt (bit 3) of
the I2C_RAW_INTR_STAT register.
0x0
Table 345: I2C_CLR_RD_REQ_REG (0x50001450)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CLR_RD_REQ
Read this register to clear the RD_REQ interrupt (bit 5) of
the I2C_RAW_INTR_STAT register.
0x0
Table 346: I2C_CLR_TX_ABRT_REG (0x50001454)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CLR_TX_ABRT
Read this register to clear the TX_ABRT interrupt (bit 6) of
the
0x0
IC_RAW_INTR_STAT register, and the
I2C_TX_ABRT_SOURCE register. This also releases the TX
FIFO from the flushed/reset state, allowing more writes to
the TX FIFO. Refer to Bit 9 of the I2C_TX_ABRT_SOURCE
register for an exception to clearing
IC_TX_ABRT_SOURCE.
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Table 347: I2C_CLR_RX_DONE_REG (0x50001458)
Bit
15:1
0
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
R
CLR_RX_DONE
Read this register to clear the RX_DONE interrupt (bit 7) of
the
I2C_RAW_INTR_STAT register.
Table 348: I2C_CLR_ACTIVITY_REG (0x5000145C)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CLR_ACTIVITY
Reading this register clears the ACTIVITY interrupt if the I2C
is not active anymore. If the I2C module is still active on the
bus, the ACTIVITY interrupt bit continues to be set. It is auto-
matically cleared by hardware if the module is disabled and if
there is no further activity on the bus. The value read from
this register to get status of the ACTIVITY interrupt (bit 8) of
the IC_RAW_INTR_STAT register
0x0
Table 349: I2C_CLR_STOP_DET_REG (0x50001460)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CLR_ACTIVITY
Reading this register clears the ACTIVITY interrupt if the I2C
is not active anymore. If the I2C module is still active on the
bus, the ACTIVITY interrupt bit continues to be set. It is auto-
matically cleared by hardware if the module is disabled and if
there is no further activity on the bus. The value read from
this register to get status of the ACTIVITY interrupt (bit 8) of
the IC_RAW_INTR_STAT register.
0x0
Table 350: I2C_CLR_START_DET_REG (0x50001464)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CLR_START_DET
Read this register to clear the START_DET interrupt (bit 10)
of the IC_RAW_INTR_STAT register.
0x0
Table 351: I2C_CLR_GEN_CALL_REG (0x50001468)
Bit
15:1
0
Mode Symbol
Description
Reset
-
-
Reserved
0x0
R
CLR_GEN_CALL
Read this register to clear the GEN_CALL interrupt (bit 11) of 0x0
I2C_RAW_INTR_STAT register.
Table 352: I2C_ENABLE_REG (0x5000146C)
Bit
Mode Symbol
Description
Reset
15:1
-
-
Reserved
0x0
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Table 352: I2C_ENABLE_REG (0x5000146C)
Bit
Mode Symbol
R/W CTRL_ENABLE
Description
Reset
0
Controls whether the controller is enabled.
0: Disables the controller (TX and RX FIFOs are held in an
erased state)
0x0
1: Enables the controller
Software can disable the controller while it is active. How-
ever, it is important that care be taken to ensure that the con-
troller is disabled properly. When the controller is disabled,
the following occurs:
* The TX FIFO and RX FIFO get flushed.
* Status bits in the IC_INTR_STAT register are still active
until the controller goes into IDLE state.
If the module is transmitting, it stops as well as deletes the
contents of the transmit buffer after the current transfer is
complete. If the module is receiving, the controller stops the
current transfer at the end of the current byte and does not
acknowledge the transfer.
There is a two ic_clk delay when enabling or disabling the
controller
Table 353: I2C_STATUS_REG (0x50001470)
Bit
15:7
6
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
SLV_ACTIVITY
Slave FSM Activity Status. When the Slave Finite State
Machine (FSM) is not in the IDLE state, this bit is set.
0: Slave FSM is in IDLE state so the Slave part of the con-
troller is not Active
0x0
1: Slave FSM is not in IDLE state so the Slave part of the
controller is Active
5
R
MST_ACTIVITY
Master FSM Activity Status. When the Master Finite State
Machine (FSM) is not in the IDLE state, this bit is set.
0: Master FSM is in IDLE state so the Master part of the con-
troller is not Active
0x0
1: Master FSM is not in IDLE state so the Master part of the
controller is Active
4
3
2
R
R
R
RFF
Receive FIFO Completely Full. When the receive FIFO is
completely full, this bit is set. When the receive FIFO con-
tains one or more empty location, this bit is cleared.
0: Receive FIFO is not full
0x0
0x0
0x1
1: Receive FIFO is full
RFNE
TFE
Receive FIFO Not Empty. This bit is set when the receive
FIFO contains one or more entries; it is cleared when the
receive FIFO is empty.
0: Receive FIFO is empty
1: Receive FIFO is not empty
Transmit FIFO Completely Empty. When the transmit FIFO is
completely empty, this bit is set. When it contains one or
more valid entries, this bit is cleared. This bit field does not
request an interrupt.
0: Transmit FIFO is not empty
1: Transmit FIFO is empty
1
R
TFNF
Transmit FIFO Not Full. Set when the transmit FIFO contains
one or more empty locations, and is cleared when the FIFO
is full.
0x1
0: Transmit FIFO is full
1: Transmit FIFO is not full
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Table 353: I2C_STATUS_REG (0x50001470)
Bit
Mode Symbol
I2C_ACTIVITY
Description
Reset
0
R
I2C Activity Status.
0x0
Table 354: I2C_TXFLR_REG (0x50001474)
Bit
Mode Symbol
Description
Reset
0x0
15:6
5:0
-
-
Reserved
R
TXFLR
Transmit FIFO Level. Contains the number of valid data
entries in the transmit FIFO. Size is constrained by the
TXFLR value
0x0
Table 355: I2C_RXFLR_REG (0x50001478)
Bit
Mode Symbol
Description
Reset
0x0
15:6
5:0
-
-
Reserved
R
RXFLR
Receive FIFO Level. Contains the number of valid data
entries in the receive FIFO. Size is constrained by the
RXFLR value
0x0
Table 356: I2C_SDA_HOLD_REG (0x5000147C)
Bit
Mode Symbol
R/W IC_SDA_HOLD
Description
Reset
15:0
SDA Hold time
0x1
Table 357: I2C_TX_ABRT_SOURCE_REG (0x50001480)
Bit
Mode Symbol
Description
Reset
15
R
R
ABRT_SLVRD_INTX
1: When the processor side responds to a slave mode
request for data to be transmitted to a remote master and
user writes a 1 in CMD (bit 8) of 2IC_DATA_CMD register
0x0
14
ABRT_SLV_ARBLOS 1: Slave lost the bus while transmitting data to a remote
0x0
T
master.
I2C_TX_ABRT_SOURCE[12] is set at the same time. Note:
Even though the slave never "owns" the bus, something
could go wrong on the bus. This is a fail safe check. For
instance, during a data transmission at the low-to-high tran-
sition of SCL, if what is on the data bus is not what is sup-
posed to be transmitted, then the controller no longer own
the bus.
13
12
R
R
ABRT_SLVFLUSH_T
XFIFO
1: Slave has received a read command and some data
exists in the TX FIFO so the slave issues a TX_ABRT inter-
rupt to flush old data in TX FIFO.
0x0
0x0
ARB_LOST
1: Master has lost arbitration, or if
I2C_TX_ABRT_SOURCE[14] is also set, then the slave
transmitter has lost arbitration. Note: I2C can be both master
and slave at the same time.
11
10
R
R
ABRT_MASTER_DIS 1: User tries to initiate a Master operation with the Master
mode disabled.
0x0
0x0
ABRT_10B_RD_NO
RSTRT
1: The restart is disabled (IC_RESTART_EN bit
(I2C_CON[5]) = 0) and the master sends a read command in
10-bit addressing mode.
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Table 357: I2C_TX_ABRT_SOURCE_REG (0x50001480)
Bit
Mode Symbol
R ABRT_SBYTE_NOR
Description
Reset
0x0
9
To clear Bit 9, the source of the ABRT_SBYTE_NORSTRT
must be fixed first; restart must be enabled (I2C_CON[5]=1),
the SPECIAL bit must be cleared (I2C_TAR[11]), or the
GC_OR_START bit must be cleared (I2C_TAR[10]). Once
the source of the ABRT_SBYTE_NORSTRT is fixed, then
this bit can be cleared in the same manner as other bits in
this register. If the source of the ABRT_SBYTE_NORSTRT
is not fixed before attempting to clear this bit, bit 9 clears for
one cycle and then gets re-asserted. 1: The restart is disa-
bled (IC_RESTART_EN bit (I2C_CON[5]) = 0) and the user
is trying to send a START Byte.
STRT
8
R
ABRT_HS_NORSTR
T
1: The restart is disabled (IC_RESTART_EN bit
(I2C_CON[5]) = 0) and the user is trying to use the master to
transfer data in High Speed mode
0x0
7
6
5
R
R
R
ABRT_SBYTE_ACK
DET
1: Master has sent a START Byte and the START Byte was
acknowledged (wrong behavior).
0x0
0x0
0x0
ABRT_HS_ACKDET
1: Master is in High Speed mode and the High Speed Master
code was acknowledged (wrong behavior).
ABRT_GCALL_REA
D
1: the controller in master mode sent a General Call but the
user programmed the byte following the General Call to be a
read from the bus (IC_DATA_CMD[9] is set to 1).
4
3
R
R
ABRT_GCALL_NOA
CK
1: the controller in master mode sent a General Call and no
slave on the bus acknowledged the General Call.
0x0
0x0
ABRT_TXDATA_NO
ACK
1: This is a master-mode only bit. Master has received an
acknowledgement for the address, but when it sent data
byte(s) following the address, it did not receive an acknowl-
edge from the remote slave(s).
2
R
ABRT_10ADDR2_N
OACK
1: Master is in 10-bit address mode and the second address
byte of the 10-bit address was not acknowledged by any
slave.
0x0
1
0
R
R
ABRT_10ADDR1_N
OACK
1: Master is in 10-bit address mode and the first 10-bit
address byte was not acknowledged by any slave.
0x0
0x0
ABRT_7B_ADDR_N
OACK
1: Master is in 7-bit addressing mode and the address sent
was not acknowledged by any slave.
Table 358: I2C_DMA_CR_REG (0x50001488)
Bit
Mode Symbol
Description
Reset
1
R/W
R/W
TDMAE
RDMAE
Transmit DMA Enable. //This bit enables/disables the trans-
mit FIFO DMA channel. 0 = Transmit DMA disabled 1 =
Transmit DMA enabled
0x0
0
Receive DMA Enable. This bit enables/disables the receive
FIFO DMA channel. 0 = Receive DMA disabled 1 = Receive
DMA enabled
0x0
Table 359: I2C_DMA_TDLR_REG (0x5000148C)
Bit
Mode Symbol
R/W DMATDL
Description
Reset
4:0
Transmit Data Level. This bit field controls the level at which
a DMA request is made by the transmit logic. It is equal to
the watermark level; that is, the dma_tx_req signal is gener-
ated when the number of valid data entries in the transmit
FIFO is equal to or below this field value, and TDMAE = 1.
0x0
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Table 360: I2C_DMA_RDLR_REG (0x50001490)
Bit
Mode Symbol
R/W DMARDL
Description
Reset
4:0
Receive Data Level. This bit field controls the level at which
a DMA request is made by the receive logic. The watermark
level = DMARDL+1; that is, dma_rx_req is generated when
the number of valid data entries in the receive FIFO is equal
to or more than this field value + 1, and RDMAE =1. For
instance, when DMARDL is 0, then dma_rx_req is asserted
when 1 or more data entries are present in the receive FIFO.
0x0
Table 361: I2C_SDA_SETUP_REG (0x50001494)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R/W
SDA_SETUP
SDA Setup.
0x64
This register controls the amount of time delay (number of
I2C clock periods) between the rising edge of SCL and SDA
changing by holding SCL low when I2C block services a
read request while operating as a slave-transmitter. The rele-
vant I2C requirement is tSU:DAT (note 4) as detailed in the
I2C Bus Specification. This register must be programmed
with a value equal to or greater than 2.
It is recommended that if the required delay is 1000ns, then
for an I2C frequency of 10 MHz, IC_SDA_SETUP should be
programmed to a value of 11.Writes to this register succeed
only when IC_ENABLE[0] = 0.
Table 362: I2C_ACK_GENERAL_CALL_REG (0x50001498)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
ACK_GEN_CALL
ACK General Call. When set to 1, I2C Ctrl responds with a
ACK (by asserting ic_data_oe) when it receives a General
Call. When set to 0, the controller does not generate General
Call interrupts.
0x0
Table 363: I2C_ENABLE_STATUS_REG (0x5000149C)
Bit
Mode Symbol
Description
Reset
15:3
-
-
Reserved
0x0
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Table 363: I2C_ENABLE_STATUS_REG (0x5000149C)
Bit
Mode Symbol
R SLV_RX_DATA_LOS
Description
Reset
0x0
2
Slave Received Data Lost. This bit indicates if a Slave-
Receiver
T
operation has been aborted with at least one data byte
received from an I2C transfer due to the setting of
IC_ENABLE from 1 to 0. When read as 1, the controller is
deemed to have been actively engaged in an aborted I2C
transfer (with matching address) and the data phase of the
I2C transfer has been entered, even though a data byte has
been responded with a NACK. NOTE: If the remote I2C mas-
ter terminates the transfer with a STOP condition before the
controller has a chance to NACK a transfer, and IC_ENABLE
has been set to 0, then this bit is also set to 1.
When read as 0, the controller is deemed to have been disa-
bled without being actively involved in the data phase of a
Slave-Receiver transfer.
NOTE: The CPU can safely read this bit when IC_EN (bit 0)
is read as 0.
1
R
SLV_DISABLED_WH Slave Disabled While Busy (Transmit, Receive). This bit indi- 0x0
ILE_BUSY
cates if a potential or active Slave operation has been
aborted due to the setting of the IC_ENABLE register from 1
to 0. This bit is set when the CPU writes a 0 to the
IC_ENABLE register while:
(a) I2C Ctrl is receiving the address byte of the Slave-Trans-
mitter operation from a remote master; OR,
(b) address and data bytes of the Slave-Receiver operation
from a remote master. When read as 1, the controller is
deemed to have forced a NACK during any part of an I2C
transfer, irrespective of whether the I2C address matches
the slave address set in I2C Ctrl (IC_SAR register) OR if the
transfer is completed before IC_ENABLE is set to 0 but has
not taken effect.
NOTE: If the remote I2C master terminates the transfer with
a STOP condition before the the controller has a chance to
NACK a transfer, and IC_ENABLE has been set to 0, then
this bit will also be set to 1.
When read as 0, the controller is deemed to have been disa-
bled when there is master activity, or when the I2C bus is
idle.
NOTE: The CPU can safely read this bit when IC_EN (bit 0)
is read as 0.
0
R
IC_EN
ic_en Status. This bit always reflects the value driven on the
output port ic_en. When read as 1, the controller is deemed
to be in an enabled state.
0x0
When read as 0, the controller is deemed completely inac-
tive.
NOTE: The CPU can safely read this bit anytime. When this
bit is read as 0, the CPU can safely read
SLV_RX_DATA_LOST (bit 2) and
SLV_DISABLED_WHILE_BUSY (bit 1).
Table 364: I2C_IC_FS_SPKLEN_REG (0x500014A0)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 364: I2C_IC_FS_SPKLEN_REG (0x500014A0)
Bit
Mode Symbol
R/W IC_FS_SPKLEN
Description
Reset
7:0
This register must be set before any I2C bus transaction can
take place to ensure stable operation. This register sets the
duration, measured in ic_clk cycles, of the longest spike in
the SCL or SDA lines that will be filtered out by the spike
suppression logic. This register can be written only when the
I2C interface is disabled which corresponds to the
IC_ENABLE register being set to 0. Writes at other times
have no effect. The minimum valid value is 2; hardware pre-
vents values less than this being written, and if attempted
results in 2 being set.
0x1
Table 365: I2C_COMP_PARAM1_REG (0x500014F4)
Bit
Mode Symbol
Description
Reset
-
-
-
Undefined
-
Table 366: I2C_COMP_PARAM2_REG (0x500014F6)
Bit
Mode Symbol
Description
Reset
-
-
-
Undefined
-
Table 367: I2C_COMP_VERSION_REG (0x500014F8)
Bit
Mode Symbol
Description
Reset
-
-
-
Undefined
-
Table 368: I2C_COMP2_VERSION (0x500014FA)
Bit
Mode Symbol
Description
Reset
-
-
-
Undefined
-
Table 369: I2C_COMP_TYPE_REG (0x500014FC)
Bit
Mode Symbol
Description
Reset
-
-
-
Undefined
-
Table 370: I2C_COMP_TYPE2_REG (0x500014FE)
Bit
Mode Symbol
Description
Reset
-
-
-
Undefined
-
Table 371: I2C2_CON_REG (0x50001500)
Bit
15:7
6
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
I2C_SLAVE_DISABL
E
Slave enabled or disabled after reset is applied, which
means software does not have to configure the slave.
0=slave is enabled
0x1
1=slave is disabled
Software should ensure that if this bit is written with '0', then
bit 0 should also be written with a '0'.
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Table 371: I2C2_CON_REG (0x50001500)
Bit
Mode Symbol
Description
Reset
0x1
5
R/W
R/W
R/W
I2C_RESTART_EN
Determines whether RESTART conditions may be sent
when acting as a master
0= disable
1=enable
4
3
I2C_10BITADDR_MA Controls whether the controller starts its transfers in 7- or 10- 0x1
STER
bit addressing mode when acting as a master.
0= 7-bit addressing
1= 10-bit addressing
I2C_10BITADDR_SL
AVE
When acting as a slave, this bit controls whether the control- 0x1
ler responds to 7- or 10-bit addresses.
0= 7-bit addressing
1= 10-bit addressing
2:1
0
R/W
R/W
I2C_SPEED
These bits control at which speed the controller operates.
1= standard mode (100 kbit/s)
2= fast mode (400 kbit/s)
0x2
0x1
I2C_MASTER_MOD
E
This bit controls whether the controller master is enabled.
0= master disabled
1= master enabled
Software should ensure that if this bit is written with '1' then
bit 6 should also be written with a '1'.
Table 372: I2C2_TAR_REG (0x50001504)
Bit
Mode Symbol
Description
Reset
0x0
15:12
11
-
-
Reserved
R/W
SPECIAL
This bit indicates whether software performs a General Call
0x0
or
START BYTE command.
0: ignore bit 10 GC_OR_START and use IC_TAR normally
1: perform special I2C command as specified in
GC_OR_START
bit
10
R/W
GC_OR_START
If bit 11 (SPECIAL) is set to 1, then this bit indicates whether
a General Call or START byte command is to be performed
by the controller.
0x0
0: General Call Address - after issuing a General Call, only
writes may be performed. Attempting to issue a read com-
mand results in setting bit 6 (TX_ABRT) of the
IC_RAW_INTR_STAT register. The controller remains in
General Call mode until the SPECIAL bit value (bit 11) is
cleared.
1: START BYTE
9:0
R/W
IC_TAR
This is the target address for any master transaction. When
transmitting a General Call, these bits are ignored. To gener-
ate a START BYTE, the CPU needs to write only once into
these bits.
0x55
Note: If the IC_TAR and IC_SAR are the same, loopback
exists but the FIFOs are shared between master and slave,
so full loopback is not feasible. Only one direction loopback
mode is supported (simplex), not duplex. A master cannot
transmit to itself; it can transmit to only a slave
Writes to this register succeed only when IC_ENABLE[0] is
set to 0
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Table 373: I2C2_SAR_REG (0x50001508)
Bit
Mode Symbol
Description
Reset
0x0
15:10
9:0
-
-
Reserved
R/W
IC_SAR
The IC_SAR holds the slave address when the I2C is operat- 0x55
ing as a slave. For 7-bit addressing, only IC_SAR[6:0] is
used. This register can be written only when the I2C inter-
face is disabled, which corresponds to the IC_ENABLE reg-
ister being set to 0. Writes at other times have no effect.
Table 374: I2C2_HS_MADDR_REG (0x5000150C)
Bit
Mode Symbol
R/W IIC_HS_MAR
Description
Reset
2:0
This bit field holds the value of the I2C HS mode master
code.
0x1
Table 375: I2C2_DATA_CMD_REG (0x50001510)
Bit
15:9
8
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
CMD
This bit controls whether a read or a write is performed. This
bit does not control the direction when the I2C Ctrl acts as a
slave. It controls only the direction when it acts as a master.
1 = Read
0x0
0 = Write
When a command is entered in the TX FIFO, this bit distin-
guishes the write and read commands. In slave-receiver
mode, this bit is a "don't care" because writes to this register
are not required. In slave-transmitter mode, a "0" indicates
that CPU data is to be transmitted and as DAT or
IC_DATA_CMD[7:0]. When programming this bit, you should
remember the following: attempting to perform a read opera-
tion after a General Call command has been sent results in a
TX_ABRT interrupt (bit 6 of the
I2C_RAW_INTR_STAT_REG), unless bit 11 (SPECIAL) in
the I2C_TAR register has been cleared.
If a "1" is written to this bit after receiving a RD_REQ inter-
rupt, then a TX_ABRT interrupt occurs.
NOTE: It is possible that while attempting a master I2C read
transfer on the controller, a RD_REQ interrupt may have
occurred simultaneously due to a remote I2C master
addressing the controller. In this type of scenario, it ignores
the I2C_DATA_CMD write, generates a TX_ABRT interrupt,
and waits to service the RD_REQ interrupt
7:0
R/W
DAT
This register contains the data to be transmitted or received
on the I2C bus. If you are writing to this register and want to
perform a read, bits 7:0 (DAT) are ignored by the controller.
However, when you read this register, these bits return the
value of data received on the controller's interface.
0x0
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Table 376: I2C2_SS_SCL_HCNT_REG (0x50001514)
Bit
Mode Symbol
R/W IC_SS_SCL_HCNT
Description
Reset
15:0
This register must be set before any I2C bus transaction can
take place to ensure proper I/O timing. This register sets the
SCL clock high-period count for standard speed. This regis-
ter can be written only when the I2C interface is disabled
which corresponds to the IC_ENABLE register being set to
0. Writes at other
0x48
times have no effect.
The minimum valid value is 6; hardware prevents values less
than this being written, and if attempted results in 6 being
set.
NOTE: This register must not be programmed to a value
higher than 65525, because the controller uses a 16-bit
counter to flag an I2C bus idle condition when this counter
reaches a value of IC_SS_SCL_HCNT + 10.
Table 377: I2C2_SS_SCL_LCNT_REG (0x50001518)
Bit
Mode Symbol
R/W IC_SS_SCL_LCNT
Description
Reset
15:0
This register must be set before any I2C bus transaction can
take place to ensure proper I/O timing. This register sets the
SCL clock low period count for standard speed.
This register can be written only when the I2C interface is
disabled which corresponds to the I2C_ENABLE register
being set to 0. Writes at other times have no effect.
The minimum valid value is 8; hardware prevents values less
than this being written, and if attempted, results in 8 being
set.
0x4F
Table 378: I2C2_FS_SCL_HCNT_REG (0x5000151C)
Bit
Mode Symbol
R/W IC_FS_SCL_HCNT
Description
Reset
15:0
This register must be set before any I2C bus transaction can
take place to ensure proper I/O timing. This register sets the
SCL clock high-period count for fast speed. It is used in high-
speed mode to send the Master Code and START BYTE or
General CALL. This register can be written only when the
I2C interface is disabled, which corresponds to the
I2C_ENABLE register being set to 0. Writes at other times
have no effect.
0x8
The minimum valid value is 6; hardware prevents values less
than this being written, and if attempted results in 6 being
set.
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Table 379: I2C2_FS_SCL_LCNT_REG (0x50001520)
Bit
Mode Symbol
R/W IC_FS_SCL_LCNT
Description
Reset
15:0
This register must be set before any I2C bus transaction can
take place to ensure proper I/O timing. This register sets the
SCL clock low-period count for fast speed. It is used in high-
speed mode to send the Master Code and START BYTE or
General CALL. This register can be written only when the
I2C interface is disabled, which corresponds to the
I2C_ENABLE register being set to 0. Writes at other times
have no effect.
0x17
The minimum valid value is 8; hardware prevents values less
than this being written, and if attempted results in 8 being
set. For designs with APB_DATA_WIDTH = 8 the order of
programming is important to ensure the correct operation of
the controller. The lower byte must be programmed first.
Then the upper byte is programmed.
Table 380: I2C2_INTR_STAT_REG (0x5000152C)
Bit
Mode Symbol
Description
Reset
0x0
15:12
11
-
-
Reserved
R
R_GEN_CALL
Set only when a General Call address is received and it is
acknowledged. It stays set until it is cleared either by disa-
bling controller or when the CPU reads bit 0 of the
I2C_CLR_GEN_CALL register. The controller stores the
received data in the Rx buffer.
0x0
10
9
R
R
R
R_START_DET
R_STOP_DET
R_ACTIVITY
Indicates whether a START or RESTART condition has
occurred on the I2C interface regardless of whether control-
ler is operating in slave or master mode.
0x0
0x0
0x0
Indicates whether a STOP condition has occurred on the I2C
interface regardless of whether controller is operating in
slave or master mode.
8
This bit captures I2C Ctrl activity and stays set until it is
cleared. There are four ways to clear it:
=> Disabling the I2C Ctrl
=> Reading the IC_CLR_ACTIVITY register
=> Reading the IC_CLR_INTR register
=> System reset
Once this bit is set, it stays set unless one of the four meth-
ods is used to clear it. Even if the controller module is idle,
this bit remains set until cleared, indicating that there was
activity on the bus.
7
R
R_RX_DONE
When the controller is acting as a slave-transmitter, this bit is
set to 1 if the master does not acknowledge a transmitted
byte. This occurs on the last byte of the transmission, indi-
cating that the transmission is done.
0x0
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Table 380: I2C2_INTR_STAT_REG (0x5000152C)
Bit
Mode Symbol
Description
Reset
6
R
R_TX_ABRT
This bit indicates if the controller, as an I2C transmitter, is
unable to complete the intended actions on the contents of
the transmit FIFO. This situation can occur both as an I2C
master or an I2C slave, and is referred to as a "transmit
abort".
0x0
When this bit is set to 1, the I2C_TX_ABRT_SOURCE regis-
ter indicates the reason why the transmit abort takes places.
NOTE: The controller flushes/resets/empties the TX FIFO
whenever this bit is set. The TX FIFO remains in this flushed
state until the register I2C_CLR_TX_ABRT is read. Once
this read is performed, the TX FIFO is then ready to accept
more data bytes from the APB interface.
5
R
R_RD_REQ
This bit is set to 1 when the controller is acting as a slave
and another I2C master is attempting to read data from the
controller. The controller holds the I2C bus in a wait state
(SCL=0) until this interrupt is serviced, which means that the
slave has been addressed by a remote master that is asking
for data to be transferred. The processor must respond to
this interrupt and then write the requested data to the
I2C_DATA_CMD register. This bit is set to 0 just after the
processor reads the I2C_CLR_RD_REQ register
0x0
4
R
R_TX_EMPTY
This bit is set to 1 when the transmit buffer is at or below the
threshold value set in the I2C_TX_TL register. It is automati-
cally cleared by hardware when the buffer level goes above
the threshold. When the IC_ENABLE bit 0 is 0, the TX FIFO
is flushed and held in reset. There the TX FIFO looks like it
has no data within it, so this bit is set to 1, provided there is
activity in the master or slave state machines. When there is
no longer activity, then with ic_en=0, this bit is set to 0.
0x0
3
2
R
R
R_TX_OVER
R_RX_FULL
Set during transmit if the transmit buffer is filled to 32 and the
processor attempts to issue another I2C command by writing
to the IC_DATA_CMD register. When the module is disabled,
this bit keeps its level until the master or slave state
machines go into idle, and when ic_en goes to 0, this inter-
rupt is cleared
0x0
0x0
Set when the receive buffer reaches or goes above the
RX_TL threshold in the I2C_RX_TL register. It is automati-
cally cleared by hardware when buffer level goes below the
threshold. If the module is disabled (I2C_ENABLE[0]=0), the
RX FIFO is flushed and held in reset; therefore the RX FIFO
is not full. So this bit is cleared once the I2C_ENABLE bit 0 is
programmed with a 0, regardless of the activity that contin-
ues.
1
0
R
R
R_RX_OVER
Set if the receive buffer is completely filled to 32 and an addi- 0x0
tional byte is received from an external I2C device. The con-
troller acknowledges this, but any data bytes received after
the FIFO is full are lost. If the module is disabled
(I2C_ENABLE[0]=0), this bit keeps its level until the master
or slave state machines go into idle, and when ic_en goes to
0, this interrupt is cleared.
R_RX_UNDER
Set if the processor attempts to read the receive buffer when
it is empty by reading from the IC_DATA_CMD register. If the
module is disabled (I2C_ENABLE[0]=0), this bit keeps its
level until the master or slave state machines go into idle,
and when ic_en goes to 0, this interrupt is cleared.
0x0
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Table 381: I2C2_INTR_MASK_REG (0x50001530)
Bit
Mode Symbol
Description
Reset
15:12
11
-
-
Reserved
0x0
0x1
R/W
M_GEN_CALL
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
10
9
8
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
M_START_DET
M_STOP_DET
M_ACTIVITY
M_RX_DONE
M_TX_ABRT
M_RD_REQ
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
0x0
0x0
0x0
0x1
0x1
0x1
0x1
0x1
0x1
0x1
0x1
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
M_TX_EMPTY
M_TX_OVER
M_RX_FULL
M_RX_OVER
M_RX_UNDER
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
These bits mask their corresponding interrupt status bits in
the I2C_INTR_STAT register.
Table 382: I2C2_RAW_INTR_STAT_REG (0x50001534)
Bit
Mode Symbol
Description
Reset
0x0
15:12
11
-
-
Reserved
R
GEN_CALL
Set only when a General Call address is received and it is
acknowledged. It stays set until it is cleared either by disa-
bling controller or when the CPU reads bit 0 of the
I2C_CLR_GEN_CALL register. I2C Ctrl stores the received
data in the Rx buffer.
0x0
10
9
R
R
R
START_DET
STOP_DET
ACTIVITY
Indicates whether a START or RESTART condition has
occurred on the I2C interface regardless of whether control-
ler is operating in slave or master mode.
0x0
0x0
0x0
Indicates whether a STOP condition has occurred on the I2C
interface regardless of whether controller is operating in
slave or master mode.
8
This bit captures I2C Ctrl activity and stays set until it is
cleared. There are four ways to clear it:
=> Disabling the I2C Ctrl
=> Reading the IC_CLR_ACTIVITY register
=> Reading the IC_CLR_INTR register
=> System reset
Once this bit is set, it stays set unless one of the four meth-
ods is used to clear it. Even if the controller module is idle,
this bit remains set until cleared, indicating that there was
activity on the bus.
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Table 382: I2C2_RAW_INTR_STAT_REG (0x50001534)
Bit
Mode Symbol
Description
Reset
7
R
RX_DONE
When the controller is acting as a slave-transmitter, this bit is
set to 1 if the master does not acknowledge a transmitted
byte. This occurs on the last byte of the transmission, indi-
cating that the transmission is done.
0x0
6
R
TX_ABRT
This bit indicates if the controller, as an I2C transmitter, is
unable to complete the intended actions on the contents of
the transmit FIFO. This situation can occur both as an I2C
master or an I2C slave, and is referred to as a "transmit
abort".
0x0
When this bit is set to 1, the I2C_TX_ABRT_SOURCE regis-
ter indicates the reason why the transmit abort takes places.
NOTE: The controller flushes/resets/empties the TX FIFO
whenever this bit is set. The TX FIFO remains in this flushed
state until the register I2C_CLR_TX_ABRT is read. Once
this read is performed, the TX FIFO is then ready to accept
more data bytes from the APB interface.
5
R
RD_REQ
This bit is set to 1 when I2C Ctrl is acting as a slave and
another I2C master is attempting to read data from the con-
troller. The controller holds the I2C bus in a wait state
(SCL=0) until this interrupt is serviced, which means that the
slave has been addressed by a remote master that is asking
for data to be transferred. The processor must respond to
this interrupt and then write the requested data to the
I2C_DATA_CMD register. This bit is set to 0 just after the
processor reads the I2C_CLR_RD_REQ register
0x0
4
R
TX_EMPTY
This bit is set to 1 when the transmit buffer is at or below the
threshold value set in the I2C_TX_TL register. It is automati-
cally cleared by hardware when the buffer level goes above
the threshold. When the IC_ENABLE bit 0 is 0, the TX FIFO
is flushed and held in reset. There the TX FIFO looks like it
has no data within it, so this bit is set to 1, provided there is
activity in the master or slave state machines. When there is
no longer activity, then with ic_en=0, this bit is set to 0.
0x0
3
2
R
R
TX_OVER
RX_FULL
Set during transmit if the transmit buffer is filled to 32 and the
processor attempts to issue another I2C command by writing
to the IC_DATA_CMD register. When the module is disabled,
this bit keeps its level until the master or slave state
machines go into idle, and when ic_en goes to 0, this inter-
rupt is cleared
0x0
0x0
Set when the receive buffer reaches or goes above the
RX_TL threshold in the I2C_RX_TL register. It is automati-
cally cleared by hardware when buffer level goes below the
threshold. If the module is disabled (I2C_ENABLE[0]=0), the
RX FIFO is flushed and held in reset; therefore the RX FIFO
is not full. So this bit is cleared once the I2C_ENABLE bit 0 is
programmed with a 0, regardless of the activity that contin-
ues.
1
R
RX_OVER
Set if the receive buffer is completely filled to 32 and an addi- 0x0
tional byte is received from an external I2C device. The con-
troller acknowledges this, but any data bytes received after
the FIFO is full are lost. If the module is disabled
(I2C_ENABLE[0]=0), this bit keeps its level until the master
or slave state machines go into idle, and when ic_en goes to
0, this interrupt is cleared.
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Table 382: I2C2_RAW_INTR_STAT_REG (0x50001534)
Bit
Mode Symbol
RX_UNDER
Description
Reset
0
R
Set if the processor attempts to read the receive buffer when
it is empty by reading from the IC_DATA_CMD register. If the
module is disabled (I2C_ENABLE[0]=0), this bit keeps its
level until the master or slave state machines go into idle,
and when ic_en goes to 0, this interrupt is cleared.
0x0
Table 383: I2C2_RX_TL_REG (0x50001538)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:0
-
-
Reserved
R/W
RX_TL
Receive FIFO Threshold Level Controls the level of entries
(or above) that triggers the RX_FULL interrupt (bit 2 in
I2C_RAW_INTR_STAT register). The valid range is 0-31,
with the additional restriction that hardware does not allow
this value to be set to a value larger than the depth of the
buffer. If an attempt is made to do that, the actual value set
will be the maximum depth of the buffer. A value of 0 sets the
threshold for 1 entry, and a value of 31 sets the threshold for
32 entries.
0x0
Table 384: I2C2_TX_TL_REG (0x5000153C)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:0
-
-
Reserved
R/W
RX_TL
Transmit FIFO Threshold Level Controls the level of entries
(or below) that trigger the TX_EMPTY interrupt (bit 4 in
I2C_RAW_INTR_STAT register). The valid range is 0-31,
with the additional restriction that it may not be set to value
larger than the depth of the buffer. If an attempt is made to
do that, the actual value set will be the maximum depth of
the buffer. A value of 0 sets the threshold for 0 entries, and a
value of 31 sets the threshold for 32 entries..
0x0
Table 385: I2C2_CLR_INTR_REG (0x50001540)
Bit
15:1
0
Mode Symbol
Description
Reset
-
-
Reserved
0x0
R
CLR_INTR
Read this register to clear the combined interrupt, all individ- 0x0
ual interrupts, and the I2C_TX_ABRT_SOURCE register.
This bit does not clear hardware clearable interrupts but soft-
ware clearable interrupts. Refer to Bit 9 of the
I2C_TX_ABRT_SOURCE register for an exception to clear-
ing I2C_TX_ABRT_SOURCE
Table 386: I2C2_CLR_RX_UNDER_REG (0x50001544)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CLR_RX_UNDER
Read this register to clear the RX_UNDER interrupt (bit 0) of
0x0
the
I2C_RAW_INTR_STAT register.
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Table 387: I2C2_CLR_RX_OVER_REG (0x50001548)
Bit
15:1
0
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
R
CLR_RX_OVER
Read this register to clear the RX_OVER interrupt (bit 1) of
the
I2C_RAW_INTR_STAT register.
Table 388: I2C2_CLR_TX_OVER_REG (0x5000154C)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CLR_TX_OVER
Read this register to clear the TX_OVER interrupt (bit 3) of
the I2C_RAW_INTR_STAT register.
0x0
Table 389: I2C2_CLR_RD_REQ_REG (0x50001550)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CLR_RD_REQ
Read this register to clear the RD_REQ interrupt (bit 5) of
the I2C_RAW_INTR_STAT register.
0x0
Table 390: I2C2_CLR_TX_ABRT_REG (0x50001554)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CLR_TX_ABRT
Read this register to clear the TX_ABRT interrupt (bit 6) of
the
0x0
IC_RAW_INTR_STAT register, and the
I2C_TX_ABRT_SOURCE register. This also releases the TX
FIFO from the flushed/reset state, allowing more writes to
the TX FIFO. Refer to Bit 9 of the I2C_TX_ABRT_SOURCE
register for an exception to clearing
IC_TX_ABRT_SOURCE.
Table 391: I2C2_CLR_RX_DONE_REG (0x50001558)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CLR_RX_DONE
Read this register to clear the RX_DONE interrupt (bit 7) of
0x0
the
I2C_RAW_INTR_STAT register.
Table 392: I2C2_CLR_ACTIVITY_REG (0x5000155C)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CLR_ACTIVITY
Reading this register clears the ACTIVITY interrupt if the I2C
is not active anymore. If the I2C module is still active on the
bus, the ACTIVITY interrupt bit continues to be set. It is auto-
matically cleared by hardware if the module is disabled and if
there is no further activity on the bus. The value read from
this register to get status of the ACTIVITY interrupt (bit 8) of
the IC_RAW_INTR_STAT register
0x0
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Table 393: I2C2_CLR_STOP_DET_REG (0x50001560)
Bit
15:1
0
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
R
CLR_ACTIVITY
Reading this register clears the ACTIVITY interrupt if the I2C
is not active anymore. If the I2C module is still active on the
bus, the ACTIVITY interrupt bit continues to be set. It is auto-
matically cleared by hardware if the module is disabled and if
there is no further activity on the bus. The value read from
this register to get status of the ACTIVITY interrupt (bit 8) of
the IC_RAW_INTR_STAT register.
Table 394: I2C2_CLR_START_DET_REG (0x50001564)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CLR_START_DET
Read this register to clear the START_DET interrupt (bit 10)
of the IC_RAW_INTR_STAT register.
0x0
Table 395: I2C2_CLR_GEN_CALL_REG (0x50001568)
Bit
15:1
0
Mode Symbol
Description
Reset
-
-
Reserved
0x0
R
CLR_GEN_CALL
Read this register to clear the GEN_CALL interrupt (bit 11) of 0x0
I2C_RAW_INTR_STAT register.
Table 396: I2C2_ENABLE_REG (0x5000156C)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
CTRL_ENABLE
Controls whether the controller is enabled.
0: Disables the controller (TX and RX FIFOs are held in an
erased state)
0x0
1: Enables the controller
Software can disable the controller while it is active. How-
ever, it is important that care be taken to ensure that the con-
troller is disabled properly. When the controller is disabled,
the following occurs:
* The TX FIFO and RX FIFO get flushed.
* Status bits in the IC_INTR_STAT register are still active
until the controller goes into IDLE state.
If the module is transmitting, it stops as well as deletes the
contents of the transmit buffer after the current transfer is
complete. If the module is receiving, the controller stops the
current transfer at the end of the current byte and does not
acknowledge the transfer.
There is a two ic_clk delay when enabling or disabling the
controller
Table 397: I2C2_STATUS_REG (0x50001570)
Bit
Mode Symbol
Description
Reset
15:7
-
-
Reserved
0x0
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Table 397: I2C2_STATUS_REG (0x50001570)
Bit
Mode Symbol
Description
Reset
6
R
SLV_ACTIVITY
Slave FSM Activity Status. When the Slave Finite State
Machine (FSM) is not in the IDLE state, this bit is set.
0: Slave FSM is in IDLE state so the Slave part of the con-
troller is not Active
0x0
1: Slave FSM is not in IDLE state so the Slave part of the
controller is Active
5
R
MST_ACTIVITY
Master FSM Activity Status. When the Master Finite State
Machine (FSM) is not in the IDLE state, this bit is set.
0: Master FSM is in IDLE state so the Master part of the con-
troller is not Active
0x0
1: Master FSM is not in IDLE state so the Master part of the
controller is Active
4
3
2
R
R
R
RFF
Receive FIFO Completely Full. When the receive FIFO is
completely full, this bit is set. When the receive FIFO con-
tains one or more empty location, this bit is cleared.
0: Receive FIFO is not full
0x0
0x0
0x1
1: Receive FIFO is full
RFNE
TFE
Receive FIFO Not Empty. This bit is set when the receive
FIFO contains one or more entries; it is cleared when the
receive FIFO is empty.
0: Receive FIFO is empty
1: Receive FIFO is not empty
Transmit FIFO Completely Empty. When the transmit FIFO is
completely empty, this bit is set. When it contains one or
more valid entries, this bit is cleared. This bit field does not
request an interrupt.
0: Transmit FIFO is not empty
1: Transmit FIFO is empty
1
0
R
R
TFNF
Transmit FIFO Not Full. Set when the transmit FIFO contains
one or more empty locations, and is cleared when the FIFO
is full.
0: Transmit FIFO is full
1: Transmit FIFO is not full
0x1
0x0
I2C_ACTIVITY
I2C Activity Status.
Table 398: I2C2_TXFLR_REG (0x50001574)
Bit
Mode Symbol
Description
Reset
0x0
15:6
5:0
-
-
Reserved
R
TXFLR
Transmit FIFO Level. Contains the number of valid data
entries in the transmit FIFO. Size is constrained by the
TXFLR value
0x0
Table 399: I2C2_RXFLR_REG (0x50001578)
Bit
Mode Symbol
Description
Reset
0x0
15:6
5:0
-
-
Reserved
R
RXFLR
Receive FIFO Level. Contains the number of valid data
entries in the receive FIFO. Size is constrained by the
RXFLR value
0x0
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Table 400: I2C2_SDA_HOLD_REG (0x5000157C)
Bit
Mode Symbol
R/W IC_SDA_HOLD
Description
Reset
15:0
SDA Hold time
0x1
Table 401: I2C2_TX_ABRT_SOURCE_REG (0x50001580)
Bit
Mode Symbol
Description
Reset
15
R
R
ABRT_SLVRD_INTX
1: When the processor side responds to a slave mode
request for data to be transmitted to a remote master and
user writes a 1 in CMD (bit 8) of 2IC_DATA_CMD register
0x0
14
ABRT_SLV_ARBLOS 1: Slave lost the bus while transmitting data to a remote
0x0
T
master.
I2C_TX_ABRT_SOURCE[12] is set at the same time. Note:
Even though the slave never "owns" the bus, something
could go wrong on the bus. This is a fail safe check. For
instance, during a data transmission at the low-to-high tran-
sition of SCL, if what is on the data bus is not what is sup-
posed to be transmitted, then the controller no longer own
the bus.
13
12
R
R
ABRT_SLVFLUSH_T
XFIFO
1: Slave has received a read command and some data
exists in the TX FIFO so the slave issues a TX_ABRT inter-
rupt to flush old data in TX FIFO.
0x0
0x0
ARB_LOST
1: Master has lost arbitration, or if
I2C_TX_ABRT_SOURCE[14] is also set, then the slave
transmitter has lost arbitration. Note: I2C can be both master
and slave at the same time.
11
10
R
R
ABRT_MASTER_DIS 1: User tries to initiate a Master operation with the Master
mode disabled.
0x0
0x0
ABRT_10B_RD_NO
RSTRT
1: The restart is disabled (IC_RESTART_EN bit
(I2C_CON[5]) = 0) and the master sends a read command in
10-bit addressing mode.
9
R
ABRT_SBYTE_NOR
STRT
To clear Bit 9, the source of the ABRT_SBYTE_NORSTRT
must be fixed first; restart must be enabled (I2C_CON[5]=1),
the SPECIAL bit must be cleared (I2C_TAR[11]), or the
GC_OR_START bit must be cleared (I2C_TAR[10]). Once
the source of the ABRT_SBYTE_NORSTRT is fixed, then
this bit can be cleared in the same manner as other bits in
this register. If the source of the ABRT_SBYTE_NORSTRT
is not fixed before attempting to clear this bit, bit 9 clears for
one cycle and then gets re-asserted. 1: The restart is disa-
bled (IC_RESTART_EN bit (I2C_CON[5]) = 0) and the user
is trying to send a START Byte.
0x0
8
R
ABRT_HS_NORSTR
T
1: The restart is disabled (IC_RESTART_EN bit
(I2C_CON[5]) = 0) and the user is trying to use the master to
transfer data in High Speed mode
0x0
7
6
5
R
R
R
ABRT_SBYTE_ACK
DET
1: Master has sent a START Byte and the START Byte was
acknowledged (wrong behavior).
0x0
0x0
0x0
ABRT_HS_ACKDET
1: Master is in High Speed mode and the High Speed Master
code was acknowledged (wrong behavior).
ABRT_GCALL_REA
D
1: the controller in master mode sent a General Call but the
user programmed the byte following the General Call to be a
read from the bus (IC_DATA_CMD[9] is set to 1).
4
R
ABRT_GCALL_NOA
CK
1: the controller in master mode sent a General Call and no
slave on the bus acknowledged the General Call.
0x0
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Table 401: I2C2_TX_ABRT_SOURCE_REG (0x50001580)
Bit
Mode Symbol
Description
Reset
3
R
ABRT_TXDATA_NO
ACK
1: This is a master-mode only bit. Master has received an
acknowledgement for the address, but when it sent data
byte(s) following the address, it did not receive an acknowl-
edge from the remote slave(s).
0x0
2
R
ABRT_10ADDR2_N
OACK
1: Master is in 10-bit address mode and the second address
byte of the 10-bit address was not acknowledged by any
slave.
0x0
1
0
R
R
ABRT_10ADDR1_N
OACK
1: Master is in 10-bit address mode and the first 10-bit
address byte was not acknowledged by any slave.
0x0
0x0
ABRT_7B_ADDR_N
OACK
1: Master is in 7-bit addressing mode and the address sent
was not acknowledged by any slave.
Table 402: I2C2_DMA_CR_REG (0x50001588)
Bit
Mode Symbol
Description
Reset
1
R/W
R/W
TDMAE
RDMAE
Transmit DMA Enable. //This bit enables/disables the trans-
mit FIFO DMA channel. 0 = Transmit DMA disabled 1 =
Transmit DMA enabled
0x0
0
Receive DMA Enable. This bit enables/disables the receive
FIFO DMA channel. 0 = Receive DMA disabled 1 = Receive
DMA enabled
0x0
Table 403: I2C2_DMA_TDLR_REG (0x5000158C)
Bit
Mode Symbol
R/W DMATDL
Description
Reset
4:0
Transmit Data Level. This bit field controls the level at which
a DMA request is made by the transmit logic. It is equal to
the watermark level; that is, the dma_tx_req signal is gener-
ated when the number of valid data entries in the transmit
FIFO is equal to or below this field value, and TDMAE = 1.
0x0
Table 404: I2C2_DMA_RDLR_REG (0x50001590)
Bit
Mode Symbol
R/W DMARDL
Description
Reset
4:0
Receive Data Level. This bit field controls the level at which
a DMA request is made by the receive logic. The watermark
level = DMARDL+1; that is, dma_rx_req is generated when
the number of valid data entries in the receive FIFO is equal
to or more than this field value + 1, and RDMAE =1. For
instance, when DMARDL is 0, then dma_rx_req is asserted
when 1 or more data entries are present in the receive FIFO.
0x0
Table 405: I2C2_SDA_SETUP_REG (0x50001594)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 405: I2C2_SDA_SETUP_REG (0x50001594)
Bit
Mode Symbol
R/W SDA_SETUP
Description
Reset
7:0
SDA Setup.
0x64
This register controls the amount of time delay (number of
I2C clock periods) between the rising edge of SCL and SDA
changing by holding SCL low when I2C block services a
read request while operating as a slave-transmitter. The rele-
vant I2C requirement is tSU:DAT (note 4) as detailed in the
I2C Bus Specification. This register must be programmed
with a value equal to or greater than 2.
It is recommended that if the required delay is 1000ns, then
for an I2C frequency of 10 MHz, IC_SDA_SETUP should be
programmed to a value of 11.Writes to this register succeed
only when IC_ENABLE[0] = 0.
Table 406: I2C2_ACK_GENERAL_CALL_REG (0x50001598)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
ACK_GEN_CALL
ACK General Call. When set to 1, I2C Ctrl responds with a
ACK (by asserting ic_data_oe) when it receives a General
Call. When set to 0, the controller does not generate General
Call interrupts.
0x0
Table 407: I2C2_ENABLE_STATUS_REG (0x5000159C)
Bit
15:3
2
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
SLV_RX_DATA_LOS
T
Slave Received Data Lost. This bit indicates if a Slave-
Receiver
0x0
operation has been aborted with at least one data byte
received from an I2C transfer due to the setting of
IC_ENABLE from 1 to 0. When read as 1, the controller is
deemed to have been actively engaged in an aborted I2C
transfer (with matching address) and the data phase of the
I2C transfer has been entered, even though a data byte has
been responded with a NACK. NOTE: If the remote I2C mas-
ter terminates the transfer with a STOP condition before the
controller has a chance to NACK a transfer, and IC_ENABLE
has been set to 0, then this bit is also set to 1.
When read as 0, the controller is deemed to have been disa-
bled without being actively involved in the data phase of a
Slave-Receiver transfer.
NOTE: The CPU can safely read this bit when IC_EN (bit 0)
is read as 0.
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Table 407: I2C2_ENABLE_STATUS_REG (0x5000159C)
Bit
Mode Symbol
Description
Reset
1
R SLV_DISABLED_WH Slave Disabled While Busy (Transmit, Receive). This bit indi- 0x0
ILE_BUSY
cates if a potential or active Slave operation has been
aborted due to the setting of the IC_ENABLE register from 1
to 0. This bit is set when the CPU writes a 0 to the
IC_ENABLE register while:
(a) I2C Ctrl is receiving the address byte of the Slave-Trans-
mitter operation from a remote master; OR,
(b) address and data bytes of the Slave-Receiver operation
from a remote master. When read as 1, the controller is
deemed to have forced a NACK during any part of an I2C
transfer, irrespective of whether the I2C address matches
the slave address set in I2C Ctrl (IC_SAR register) OR if the
transfer is completed before IC_ENABLE is set to 0 but has
not taken effect.
NOTE: If the remote I2C master terminates the transfer with
a STOP condition before the the controller has a chance to
NACK a transfer, and IC_ENABLE has been set to 0, then
this bit will also be set to 1.
When read as 0, the controller is deemed to have been disa-
bled when there is master activity, or when the I2C bus is
idle.
NOTE: The CPU can safely read this bit when IC_EN (bit 0)
is read as 0.
0
R
IC_EN
ic_en Status. This bit always reflects the value driven on the
output port ic_en. When read as 1, the controller is deemed
to be in an enabled state.
0x0
When read as 0, the controller is deemed completely inac-
tive.
NOTE: The CPU can safely read this bit anytime. When this
bit is read as 0, the CPU can safely read
SLV_RX_DATA_LOST (bit 2) and
SLV_DISABLED_WHILE_BUSY (bit 1).
Table 408: I2C2_IC_FS_SPKLEN_REG (0x500015A0)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R/W
IC_FS_SPKLEN
This register must be set before any I2C bus transaction can
take place to ensure stable operation. This register sets the
duration, measured in ic_clk cycles, of the longest spike in
the SCL or SDA lines that will be filtered out by the spike
suppression logic. This register can be written only when the
I2C interface is disabled which corresponds to the
IC_ENABLE register being set to 0. Writes at other times
have no effect. The minimum valid value is 2; hardware pre-
vents values less than this being written, and if attempted
results in 2 being set.
0x1
Table 409: I2C2_COMP_PARAM1_REG (0x500015F4)
Bit
Mode Symbol
Description
Reset
-
-
-
Undefined
-
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Table 410: I2C2_COMP_PARAM2_REG (0x500015F6)
Bit
Mode Symbol
Description
Reset
-
-
-
Undefined
-
Table 411: I2C2_COMP_VERSION_REG (0x500015F8)
Bit
Mode Symbol
Description
Reset
-
-
-
Undefined
-
Table 412: I2C2_COMP2_VERSION (0x500015FA)
Bit
Mode Symbol
Description
Reset
-
-
-
Undefined
-
Table 413: I2C2_COMP_TYPE_REG (0x500015FC)
Bit
Mode Symbol
Description
Reset
-
-
-
Undefined
-
Table 414: I2C2_COMP_TYPE2_REG (0x500015FE)
Bit
Mode Symbol
Description
Reset
-
-
-
Undefined
-
37.13 KEYBOARD SCAN REGISTER FILE
Table 415: Register map KEYBOARD SCAN
Address
Port
Description
0x50001600
0x50001602
0x50001604
0x50001606
0x50001608
0x5000160A
0x5000160C
0x5000160E
0x50001610
0x50001612
0x50001614
0x50001616
0x50001618
0x5000161A
0x5000161C
0x5000161E
0x50001620
0x50001622
0x50001624
0x50001626
KBSCN_CTRL_REG
Keyboard scanner control register
Keyboard scanner control 2 register
KBSCN_CTRL2_REG
KBSCN_MATRIX_SIZE_REG
KBSCN_DEBOUNCE_REG
KBSCN_STATUS_REG
KBSCN_MESSAGE_KEY_REG
KBSCN_P00_MODE_REG
KBSCN_P01_MODE_REG
KBSCN_P02_MODE_REG
KBSCN_P03_MODE_REG
KBSCN_P04_MODE_REG
KBSCN_P05_MODE_REG
KBSCN_P06_MODE_REG
KBSCN_P07_MODE_REG
KBSCN_P10_MODE_REG
KBSCN_P11_MODE_REG
KBSCN_P12_MODE_REG
KBSCN_P13_MODE_REG
KBSCN_P14_MODE_REG
KBSCN_P15_MODE_REG
Defines the number of rows and columns of the matrix
Defines the debounce time for key press and release
keyboard scanner Interrupt status register
Returns a key message from the message queue
Defines the keyboard mode for P00
Defines the keyboard mode for P01
Defines the keyboard mode for P02
Defines the keyboard mode for P03
Defines the keyboard mode for P04
Defines the keyboard mode for P05
Defines the keyboard mode for P06
Defines the keyboard mode for P07
Defines the keyboard mode for P10
Defines the keyboard mode for P11
Defines the keyboard mode for P12
Defines the keyboard mode for P13
Defines the keyboard mode for P14
Defines the keyboard mode for P15
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Table 415: Register map KEYBOARD SCAN
Address
Port
Description
0x50001628
0x5000162A
0x5000162C
0x5000162E
0x50001630
0x50001632
0x50001634
0x5000163C
0x5000163E
0x50001640
0x50001642
0x50001644
0x50001646
0x50001648
0x5000164A
0x5000164C
0x5000164E
0x50001650
0x50001652
0x50001654
0x50001656
0x50001658
0x5000165A
KBSCN_P16_MODE_REG
KBSCN_P17_MODE_REG
KBSCN_P20_MODE_REG
KBSCN_P21_MODE_REG
KBSCN_P22_MODE_REG
KBSCN_P23_MODE_REG
KBSCN_P24_MODE_REG
KBSCN_P30_MODE_REG
KBSCN_P31_MODE_REG
KBSCN_P32_MODE_REG
KBSCN_P33_MODE_REG
KBSCN_P34_MODE_REG
KBSCN_P35_MODE_REG
KBSCN_P36_MODE_REG
KBSCN_P37_MODE_REG
KBSCN_P40_MODE_REG
KBSCN_P41_MODE_REG
KBSCN_P42_MODE_REG
KBSCN_P43_MODE_REG
KBSCN_P44_MODE_REG
KBSCN_P45_MODE_REG
KBSCN_P46_MODE_REG
KBSCN_P47_MODE_REG
Defines the keyboard mode for P16
Defines the keyboard mode for P17
Defines the keyboard mode for P20
Defines the keyboard mode for P21
Defines the keyboard mode for P22
Defines the keyboard mode for P23
Defines the keyboard mode for P24
Defines the keyboard mode for P30
Defines the keyboard mode for P31
Defines the keyboard mode for P32
Defines the keyboard mode for P33
Defines the keyboard mode for P34
Defines the keyboard mode for P35
Defines the keyboard mode for P36
Defines the keyboard mode for P37
Defines the keyboard mode for P40
Defines the keyboard mode for P41
Defines the keyboard mode for P42
Defines the keyboard mode for P43
Defines the keyboard mode for P44
Defines the keyboard mode for P45
Defines the keyboard mode for P46
Defines the keyboard mode for P47
Table 416: KBSCN_CTRL_REG (0x50001600)
Bit
Mode Symbol
Description
Reset
14
R0/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
KBSCN_RESET_FIF
O
'1' reset fifo, read always '0'
0x0
0x0
0x0
0x0
0x0
0x0
0x0
13:12
KBSCN_CLKDIV
Defines keyboard clk. "00" div/1, "01" div/4, "10" div/16, "11"
div/64
11
10:4
3
KBSCN_INACTIVE_
EN
'1' After inactive time the keyboard scanner stops the key
maxtrix scan
KBSCN_INACTIVE_
TIME
Defines the inactive time in scan cycles. Value 0 is not
allowed
KBSCN_IRQ_FIFO_
MASK
'1' Enable IRQ for fifo over and under flow
2
KBSCN_IRQ_INACTI '1' : Enable IRQ for inactive
VE_MASK
1
KBSCN_IRQ_MESS
AGE_MASK
'1' : Enable IRQ for message
0
KBSCN_EN
'1' : Enable keyboard scanner, Auto clear when inactive ena- 0x0
ble and inactive case
Datasheet
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Bluetooth Low Energy 4.2 SoC
Table 417: KBSCN_CTRL2_REG (0x50001602)
Bit
Mode Symbol
R/W KBSCN_ROW_ACTI
VE_TIME
Description
Reset
15:0
Define the row active time in keyboard clock cycles
0x0
Table 418: KBSCN_MATRIX_SIZE_REG (0x50001604)
Bit
Mode Symbol
Description
Reset
8:4
R/W
KBSCN_MATRIX_C
OLUMN
Defines the number of the columns of the keyboard matrix
minus 1. Zero means number of columns 1
0x0
3:0
R/W
KBSCN_MATRIX_R
OW
Defines the number of the rows of the keyboard matrix minus
1. Zero means number of rows 1
0x0
Table 419: KBSCN_DEBOUNCE_REG (0x50001606)
Bit
Mode Symbol
Description
KBSCN_DEBOUNCE Defines the press debounce time in cycles of full matrix
_PRESS_TIME scan. One means no debounce, zero is reserved
KBSCN_DEBOUNCE Defines the press debounce time in cycles of full matrix
_RELEASE_TIME scan. One means no debounce, zero is reserved
Reset
11:6
R/W
0x2
5:0
R/W
0x2
Table 420: KBSCN_STATUS_REG (0x50001608)
Bit
Mode Symbol
Description
Reset
8
R
R
R
R
R
KBSCN_FIFO_UNDE '1' Fifo Underflow occurred
RFL
0x0
7
KBSCN_FIFO_OVER '1' Fifo Overflow occurred
FL
0x0
0x0
0x0
0x0
6:2
1
KBSCN_NUM_MESS Defines how many messages there are in the fifo.
AGE
KBSCN_INACTIVE_I
RQ_STATUS
There is no keyboard activity for a predefined time
0
KBSCN_MES_IRQ_
STATUS
There is at least one last message in the fifo.
Table 421: KBSCN_MESSAGE_KEY_REG (0x5000160A)
Bit
Mode Symbol
Description
Reset
10
R
R
R
R
KBSCN_LAST_ENT
RY
'1' : this message is the last of the group message, else '0'.
When '1' bits 9:0 are all '1'
0x0
9
KBSCN_KEY_STATE '0' : New key state is release
'1' : New key state is press
0x0
0x0
0x0
8:4
3:0
KBSCN_KEYID_COL Defines the column id of key
UMN
KBSCN_KEYID_RO
W
Defines the row id of key
Table 422: KBSCN_P00_MODE_REG (0x5000160C)
Bit
Mode Symbol
R/W KBSCN_GPIO_EN
Description
Reset
6
'1' GPIO is enable for row or column
0x0
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Table 422: KBSCN_P00_MODE_REG (0x5000160C)
Bit
5
Mode Symbol
Description
Reset
R/W
R/W
KBSCN_ROW
KBSCN_MODE
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
0x0
0x0
4:0
Table 423: KBSCN_P01_MODE_REG (0x5000160E)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 424: KBSCN_P02_MODE_REG (0x50001610)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 425: KBSCN_P03_MODE_REG (0x50001612)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 426: KBSCN_P04_MODE_REG (0x50001614)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 427: KBSCN_P05_MODE_REG (0x50001616)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 428: KBSCN_P06_MODE_REG (0x50001618)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
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Bluetooth Low Energy 4.2 SoC
Table 429: KBSCN_P07_MODE_REG (0x5000161A)
Bit
6
Mode Symbol
Description
Reset
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
0x0
0x0
0x0
5
KBSCN_ROW
KBSCN_MODE
4:0
Table 430: KBSCN_P10_MODE_REG (0x5000161C)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 431: KBSCN_P11_MODE_REG (0x5000161E)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 432: KBSCN_P12_MODE_REG (0x50001620)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 433: KBSCN_P13_MODE_REG (0x50001622)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 434: KBSCN_P14_MODE_REG (0x50001624)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 435: KBSCN_P15_MODE_REG (0x50001626)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
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Bluetooth Low Energy 4.2 SoC
Table 436: KBSCN_P16_MODE_REG (0x50001628)
Bit
6
Mode Symbol
Description
Reset
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
0x0
0x0
0x0
5
KBSCN_ROW
KBSCN_MODE
4:0
Table 437: KBSCN_P17_MODE_REG (0x5000162A)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 438: KBSCN_P20_MODE_REG (0x5000162C)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 439: KBSCN_P21_MODE_REG (0x5000162E)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 440: KBSCN_P22_MODE_REG (0x50001630)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 441: KBSCN_P23_MODE_REG (0x50001632)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 442: KBSCN_P24_MODE_REG (0x50001634)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
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Bluetooth Low Energy 4.2 SoC
Table 443: KBSCN_P30_MODE_REG (0x5000163C)
Bit
6
Mode Symbol
Description
Reset
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
0x0
0x0
0x0
5
KBSCN_ROW
KBSCN_MODE
4:0
Table 444: KBSCN_P31_MODE_REG (0x5000163E)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 445: KBSCN_P32_MODE_REG (0x50001640)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 446: KBSCN_P33_MODE_REG (0x50001642)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 447: KBSCN_P34_MODE_REG (0x50001644)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 448: KBSCN_P35_MODE_REG (0x50001646)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 449: KBSCN_P36_MODE_REG (0x50001648)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Datasheet
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Bluetooth Low Energy 4.2 SoC
Table 450: KBSCN_P37_MODE_REG (0x5000164A)
Bit
6
Mode Symbol
Description
Reset
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
0x0
0x0
0x0
5
KBSCN_ROW
KBSCN_MODE
4:0
Table 451: KBSCN_P40_MODE_REG (0x5000164C)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 452: KBSCN_P41_MODE_REG (0x5000164E)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 453: KBSCN_P42_MODE_REG (0x50001650)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 454: KBSCN_P43_MODE_REG (0x50001652)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 455: KBSCN_P44_MODE_REG (0x50001654)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Table 456: KBSCN_P45_MODE_REG (0x50001656)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
Datasheet
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© 2018-2020 Dialog Semiconductor
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Bluetooth Low Energy 4.2 SoC
Table 457: KBSCN_P46_MODE_REG (0x50001658)
Bit
6
Mode Symbol
Description
Reset
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
0x0
0x0
0x0
5
KBSCN_ROW
KBSCN_MODE
4:0
Table 458: KBSCN_P47_MODE_REG (0x5000165A)
Bit
6
Mode Symbol
Description
Reset
0x0
R/W
R/W
R/W
KBSCN_GPIO_EN
'1' GPIO is enable for row or column
'1' GPIO is row, '0' GPIO is column
Defines the row/column index that has to be connected
5
KBSCN_ROW
KBSCN_MODE
0x0
4:0
0x0
37.14 IR REGISTER FILE
Table 459: Register map IR
Address
Port
Description
0x50001700
0x50001702
0x50001704
0x50001706
0x50001708
0x5000170A
0x5000170C
0x5000170E
0x50001710
0x50001712
IR_FREQ_CARRIER_ON_REG
IR_FREQ_CARRIER_OFF_REG
IR_LOGIC_ONE_TIME_REG
IR_LOGIC_ZERO_TIME_REG
IR_CTRL_REG
Defines the carrier signal high duration
Defnes the carrier signal low duration
Defines the logic one waveform
Defines the logic zero wavefrom
IR control register
IR_STATUS_REG
IR status register
IR_REPEAT_TIME_REG
IR_MAIN_FIFO_REG
Defines the repeat time
Main fifo write register
IR_REPEAT_FIFO_REG
IR_IRQ_STATUS_REG
Repeat fifo write register
IR interrupt status register
Table 460: IR_FREQ_CARRIER_ON_REG (0x50001700)
Bit
Mode Symbol
R/W IR_FREQ_CARRIER
_ON
Description
Reset
9:0
Defines the carrier signal high duration in IR_clk cycles. 0x0
is not allowed as a value.
0x1
Table 461: IR_FREQ_CARRIER_OFF_REG (0x50001702)
Bit
Mode Symbol
R/W IR_FREQ_CARRIER
_OFF
Description
Reset
9:0
Defines the carrier signal low duration in IR_clk cycles
0x1
Table 462: IR_LOGIC_ONE_TIME_REG (0x50001704)
Bit
Mode Symbol
Description
Reset
15:8
R/W
IR_LOGIC_ONE_MA
Defines the mark duration in carrier clock cycles. Must be >0 0x1
RK
7:0
R/W
IR_LOGIC_ONE_SP
ACE
Defines the space duration in carrier clock cycles. Must be
>0
0x1
Datasheet
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Bluetooth Low Energy 4.2 SoC
Table 463: IR_LOGIC_ZERO_TIME_REG (0x50001706)
Bit
Mode Symbol
Description
Reset
15:8
R/W
IR_LOGIC_ZERO_M
Defines the mark duration in carrier clock cycles. Must be >0 0x1
ARK
7:0
R/W
IR_LOGIC_ZERO_S
PACE
Defines the space duration in carrier clock cycles. Must be
>0
0x1
Table 464: IR_CTRL_REG (0x50001708)
Bit
Mode Symbol
Description
Reset
8
R/W
R/W
IR_IRQ_EN
1 = Enables the interrupt generation upon TX completion
0 = masks out the interrupt generation upon TX completion
0x0
7
IR_LOGIC_ONE_FO
RMAT
1 = Logic one starts with a Space followed by a Mark
0 = Logic one starts with a Mark followed by a Space
0x0
6
5
R/W
R/W
IR_LOGIC_ZERO_F
ORMAT
1 = Logic zero starts with a Space followed by a Mark
0 = Logic zero starts with a Mark followed by a Space
0x0
0x0
IR_INVERT_OUTPU
T
1 = IR output is inverted
0 = IR output is not inverted
4
3
R/W
R/W
IR_REPEAT_TYPE
IR_TX_START
1 = repeat command is defined at Repeat FIFO
0 = repeat command is defined at Code FIFO
0x0
0x0
1 = IR transmits a command
0 = IR is stopped
While this bit is 1 and SW programs it to 0, the code FIFO
will be flushed automatically.
2
R/W
IR_ENABLE
1 = IR block is enabled
0x0
0 = IR block is disabled and at reset state. This also resets
the pointers at the FIFOs
1
0
R0/W
R0/W
IR_REP_FIFO_RES
ET
1 = Flush Repeat FIFO (auto clear)
1 = Flush Code FIFO (auto clear)
0x0
0x0
IR_CODE_FIFO_RE
SET
Table 465: IR_STATUS_REG (0x5000170A)
Bit
Mode Symbol
Description
Reset
10
R
IR_BUSY
1 = IR generator is busy sending a message
0 = IR generator is idle
0x0
9:6
5:0
R
R
IR_REP_FIFO_WRD
S
Contains the amount of words in Repeat FIFO (updated only
on write)
0x0
0x0
IR_CODE_FIFO_WR
DS
Contains the amount of words in Code FIFO (updated only
on write)
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Table 466: IR_REPEAT_TIME_REG (0x5000170C)
Bit
Mode Symbol
R/W IR_REPEAT_TIME
Description
Reset
15:0
Defines the repeat time in carrier clock cycles. The repeat
timer will start counting from the start of the command and
will trigger the output of the same command residing in the
Code FIFO or the special command residing in the Repeat
FIFO as soon as it expires.
0x0
Table 467: IR_MAIN_FIFO_REG (0x5000170E)
Bit
Mode Symbol
R0/W IR_CODE_FIFO_DA
TA
Description
Reset
15:0
Code FIFO data write port
0x0
Table 468: IR_REPEAT_FIFO_REG (0x50001710)
Bit
Mode Symbol
Description
Reset
15:0
R0/W
IR_REPEAT_FIFO_D Repeat FIFO data write port
ATA
0x0
Table 469: IR_IRQ_STATUS_REG (0x50001712)
Bit
Mode Symbol
IR_IRQ_ACK
Description
Reset
0
R
When read Interrupt line is cleared
0x0
37.15 USB REGISTER FILE
Table 470: Register map USB
Address
Port
Description
0x50001800
0x50001802
0x50001804
0x50001806
0x50001808
0x5000180A
0x5000180C
0x5000180E
0x50001810
0x50001812
0x50001814
0x50001816
0x50001818
0x5000181A
0x5000181C
0x5000181E
0x50001820
0x50001822
0x50001824
0x50001826
USB_MCTRL_REG
USB_XCVDIAG_REG
USB_TCR_REG
USB_UTR_REG
USB_FAR_REG
Main Control Register)
Transceiver diagnostic Register (for test purpose only)
Transceiver configuration Register
USB test Register (for test purpose only)
Function Address Register
Node Functional State Register
Main Event Register
USB_NFSR_REG
USB_MAEV_REG
USB_MAMSK_REG
USB_ALTEV_REG
USB_ALTMSK_REG
USB_TXEV_REG
USB_TXMSK_REG
USB_RXEV_REG
USB_RXMSK_REG
USB_NAKEV_REG
USB_NAKMSK_REG
USB_FWEV_REG
USB_FWMSK_REG
USB_FNH_REG
USB_FNL_REG
Main Mask Register
Alternate Event Register
Alternate Mask Register
Transmit Event Register
Transmit Mask Register
Receive Event Register
Receive Mask Register
NAK Event Register
NAK Mask Register
FIFO Warning Event Register
FIFO Warning Mask Register
Frame Number High Byte Register
Frame Number Low Byte Register
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Table 470: Register map USB
Address
Port
Description
0x5000183E
USB_UX20CDR_REG
Transceiver 2.0 Configuration and Diagnostics Regis-
ter(for test purpose only)
0x50001840
0x50001842
0x50001844
0x50001846
0x50001848
0x5000184A
0x5000184C
0x5000184E
0x50001850
0x50001852
0x50001854
0x50001856
0x50001858
0x5000185A
0x5000185C
0x5000185E
0x50001860
0x50001862
0x50001864
0x50001866
0x50001868
0x5000186A
0x5000186C
0x5000186E
0x50001870
0x50001872
0x50001874
0x50001876
0x50001878
0x5000187A
0x5000187C
0x5000187E
0x500018D0
0x500018D4
0x500018D6
USB_EPC0_REG
USB_TXD0_REG
USB_TXS0_REG
USB_TXC0_REG
USB_EP0_NAK_REG
USB_RXD0_REG
USB_RXS0_REG
USB_RXC0_REG
USB_EPC1_REG
USB_TXD1_REG
USB_TXS1_REG
USB_TXC1_REG
USB_EPC2_REG
USB_RXD1_REG
USB_RXS1_REG
USB_RXC1_REG
USB_EPC3_REG
USB_TXD2_REG
USB_TXS2_REG
USB_TXC2_REG
USB_EPC4_REG
USB_RXD2_REG
USB_RXS2_REG
USB_RXC2_REG
USB_EPC5_REG
USB_TXD3_REG
USB_TXS3_REG
USB_TXC3_REG
USB_EPC6_REG
USB_RXD3_REG
USB_RXS3_REG
USB_RXC3_REG
USB_DMA_CTRL_REG
USB_CHARGER_CTRL_REG
USB_CHARGER_STAT_REG
Endpoint Control 0 Register
Transmit Data 0 Register
Transmit Status 0 Register
Transmit command 0 Register
EP0 INNAK and OUTNAK Register
Receive Data 0 Register
Receive Status 0 Register
Receive Command 0 Register
Endpoint Control Register 1
Transmit Data Register 1
Transmit Status Register 1
Transmit Command Register 1
Endpoint Control Register 2
Receive Data Register,1
Receive Status Register 1
Receive Command Register 1
Endpoint Control Register 3
Transmit Data Register 2
Transmit Status Register 2
Transmit Command Register 2
Endpoint Control Register 4
Receive Data Register 2
Receive Status Register 2
Receive Command Register 2
Endpoint Control Register 5
Transmit Data Register 3
Transmit Status Register 3
Transmit Command Register 3
Endpoint Control Register 6
Receive Data Register 3
Receive Status Register 3
Receive Command Register 3
USB DMA control register
USB Charger Control Register
USB Charger Status Register
Table 471: USB_MCTRL_REG (0x50001800)
Bit
Mode Symbol
Description
Reset
15:5
-
-
Reserved
0x0
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Table 471: USB_MCTRL_REG (0x50001800)
Bit
Mode Symbol
Description
Reset
4
R/W
LSMODE
Low Speed Mode
0x0
This bit enables USB 1.5 Mbit/s low speed and swaps D+
and D- pull-up resistors. Changing speed may only be done
if USBEN is set to 0.
Also D+ and D- rise and fall times are adjusted according to
the USB specification.
3
R/W
USB_NAT
Node Attached
0x0
This bit indicates that this node is ready to be detected as
attached to USB. When cleared to 0 the transceiver forces
SE0 on the USB port to prevent the hub (to which this node
is connected to) from detecting an attach event. After reset
or when the USB node is disabled, this bit is cleared to 0 to
give the device time before it must respond to commands.
After this bit has been set to 1, the device no longer drives
the USB and should be ready to receive Reset signalling
from the hub.
Note: This bit can only be set is USBEN is '1'
2
1
-
-
Reserved
0x0
0x0
R/W
USB_DBG
Debug Mode.
When this bit is set, the following registers are writable: Main
Event (MAEV), Alternate Event (ALTEV), NAK Event
(NAKEV), Transmit Status and Receive Status. Setting the
DBG bit forces the node into a locked state. The node states
can be read out of the transceiver diagnostic register (XCV-
DIAG) at location 0xFF6802 by setting the DIAG bit in the
Test Control register (UTR).
Note: The operation of CoR bits is not effected by entering
Debug mode) Note: This bit can only be set is USBEN is '1'
0
R/W
USBEN
USB EnableSetting this bit to 1 enables the Full/Low Speed
USB node. If the USBEN bit is cleared to 0, the USB is disa-
bled and the 48 MHz clock within the USB node is stopped.
In addition, all USB registers are set to their reset state,
except for the mentioned registers in Note
45
0x0
.
Note that the transceiver forces SE0 on the bus to prevent
the hub to detected the USB node, when it is disabled (not
attached).
The USBEN bit is cleared to 0 after reset
Table 472: USB_XCVDIAG_REG (0x50001802)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
USB_VPIN
With Bit0 = 1 this bit shows the level of the USB_Dp receive
data from transceiver; i.e. D+ <= VSE.
0x0
6
5
R
R
USB_VMIN
USB_RCV
With Bit0 = 1 this bit shows the level USB_Dm receive data
from transceiver; i.e. D- <= VSE.
0x0
0x0
With Bit0 = 1 this bit shows the differential level of the
receive comparator.
4
3
-
-
Reserved
0x0
0x0
R/W
USB_XCV_TXEN
With Bit0 = 1, this bit enables test Bits 2,1. Must be kept to '0'
for normal operation
2
R/W
USB_XCV_TXN
With Bit3,0 = 1, this bit sets USB_Dm to a high level, inde-
pendent of LSMODE selection
0x0
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Table 472: USB_XCVDIAG_REG (0x50001802)
Bit
Mode Symbol
Description
Reset
1
R/W
USB_XCV_TXP
With Bit3,0 = 1, this bit sets USB_Dp to a high level, inde-
pendent of LSMODE selection
0x0
0
R/W
USB_XCV_TEST
Enable USB_XCVDIAG_REG
0: Normal operation, test bits disabled
1: Enable test bits 7,6,5,3,2,1
(Note 48)
0x0
Table 473: USB_TCR_REG (0x50001804)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:5
-
-
Reserved
R/W
USB_VADJ
Reference Voltage/ Threshold voltage AdjustControls the
single-ended receiver threshold.
0x4
Shall not be modified unless instructed by Dialog Semicon-
ductor
Only enabled if USB_UTR_REG[7] = 1
4:0
R/W
USB_CADJ
Transmitter Current Adjust
0x10
Controls the driver edge rate control current.
Shall not be modified unless instructed by Dialog Semicon-
ductor
Only enabled if USB_UTR_REG[7] = 1
Table 474: USB_UTR_REG (0x50001806)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
USB_DIAG
Diagnostic enable
0x0
'0': Normal operational.
'1': Access to the USB_XCVDIAG_REG and
USB_TCR_REG enabled. For diagnostic purposes only
6
R/W
USB_NCRC
No CRC16
0x0
When this bit is set to 1, all packets transmitted by the Full/
Low Speed USB node are sent without a trailing CRC16.
Receive operations are unaffected. This mode is used to
check that CRC errors can be detected by other nodes. For
diagnostic purposes only
5
R/W
R/W
USB_SF
Short Frame
0x0
0x0
Enables the Frame timer to lock and track, short, non-com-
pliant USB frame sizes. The Short Frame bit should not be
set during normal operation. For test purposes only
4:0
USB_UTR_RES
Reserved. Must be kept to '0'
Table 475: USB_FAR_REG (0x50001808)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 475: USB_FAR_REG (0x50001808)
Bit
Mode Symbol
Description
Reset
7
R/W
USB_AD_EN
Address Enable
0x0
When set to 1, USB address field bits 6-0 are used in
address comparison (see
Address detection on page 218
for a description). When cleared to 0, the device does not
respond to any token on the USB bus.
Note: If the DEF bit in the Endpoint Control 0 register is set,
Endpoint 0 responds to the default address.
6:0
R/W
USB_AD
Address
0x0
This field holds the 7-bit function address used to transmit
and receive all tokens addressed to this device.
Table 476: USB_NFSR_REG (0x5000180A)
Bit
Mode Symbol
Description
Reset
0x0
15:2
1:0
-
-
Reserved
R/W
USB_NFS
The Node Functional State Register reports and controls the
current functional state of the USB node.
0x0
00: NodeReset.
This is the USB Reset state. This is entered upon a module
reset or by software upon detection of a USB Reset. Upon
entry, all endpoint pipes are disabled. DEF in the Endpoint
Control 0 (EPC0) register and AD_EN in the Function
Address (FAR) register should be cleared by software on
entry to this state. On exit, DEF should be reset so the
device responds to the default address.
01: NodeResume
In this state, resume K signalling is generated. This state
should be entered by firmware to initiate a remote wake-up
sequence by the device. The node must remain in this state
for at least 1 ms and no more than 15 ms.
10: NodeOperational
This is the normal operational state. In this state the node is
configured for operation on the USB bus.
11: NodeSuspend
Suspend state should be entered by firmware on detection of
a Suspend event while in Operational state. While in Sus-
pend state, the transceivers operate in their low-power sus-
pend mode. All endpoint controllers and the bits TX_EN,
LAST and RX_EN are reset, while all other internal states
are frozen. On detection of bus activity, the RESUME bit in
the ALTEV register is set. In response, software can cause
entry to NodeOperational state.
Table 477: USB_MAEV_REG (0x5000180C)
Bit
Mode Symbol
Description
Reset
0x0
15:12
11
-
-
Reserved
R/W
USB_CH_EV
USB Charger event
0x0
This bit is set if one of the bits in
USB_CHARGER_STAT_REG[2-0] change. This bit is
cleared to 0 when if USB_CHARGER_STAT_REG is read.
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Table 477: USB_MAEV_REG (0x5000180C)
Bit
Mode Symbol
Description
Reset
10
R/W
USB_EP0_NAK
Endpoint 0 NAK Event
0x0
This bit is an OR of EP0_NAK_REG[EP0_OUTNAK] and
EP0_NAK_REG[EP0_INNAK] bits. USB_EP0_NAK is
cleared to 0 when EP0_NAK_REG is read.
9
8
R/W
USB_EP0_RX
USB_EP0_TX
Endpoint 0 Receive Event
This bit is a copy of the RXS0[RX_LAST] and is cleared to 0
when this RXS0 register is read.
Note: Since Endpoint 0 implements a store and forward prin-
ciple, an overrun condition for FIFO0 cannot occur
0x0
R/W
Endpoint 0 Transmit Event
0x0
This bit is a copy of the TXS0[TX_DONE] bit and is cleared
to 0 when the TXS0 register is read.
Note: Since Endpoint 0 implements a store and forward prin-
ciple, an underrun condition for FIFO0 cannot occur.
7
6
R/W
R/W
USB_INTR
Master Interrupt Enable
0x0
0x0
This bit is hardwired to 0 in the Main Event (MAEV) register;
bit 7 in the Main Mask (MAMSK) register is the Master Inter-
rupt Enable.
USB_RX_EV
Receive Event
This bit is set to 1 if any of the unmasked bits in the Receive
Event (RXEV) register is set to 1. It indicates that a SETUP
or OUT transaction has been completed. This bit is cleared
to 0 when all of the RX_LAST bits in each Receive Status
(RXSn) register and all RXOVRRN bits in the RXEV register
are cleared to 0.
5
R/W
USB_ULD
Unlocked/Locked Detected
0x0
This bit is set to 1, when the frame timer has either entered
unlocked condition from a locked condition, or has re-
entered a locked condition from an unlocked condition as
determined by the UL bit in the Frame Number (FNH or FNL)
register. This bit is cleared to 0 when the register is read.
4
3
R/W
R/W
USB_NAK
Negative Acknowledge Event
0x0
0x0
This bit indicates that one of the unmasked NAK Event
(NAKEV) register bits has been set to 1. This bit is cleared to
0 when the NAKEV register is read.
USB_FRAME
Frame Event
This bit is set to 1, if the frame counter is updated with a new
value. This can be due to the receipt of a valid SOF packet
on the USB or to an artificial update if the frame counter was
unlocked or a frame was missed. This bit is cleared to 0
when the register is read.
2
R/W
USB_TX_EV
Transmit Event
0x0
This bit is set to 1, if any of the unmasked bits in the Transmit
Event (TXEV) register (TXFIFOn or TXUNDRNn) is set to 1.
Therefore, it indicates that an IN transaction has been com-
pleted. This bit is cleared to 0 when all the TX_DONE bits
and the TXUNDRN bits in each Transmit Status (TXSn) reg-
ister are cleared to 0.
1
0
R/W
R/W
USB_ALT
Alternate Event
0x0
0x0
This bit indicates that one of the unmasked ALTEV register
bits has been set to 1. This bit is cleared to 0 by reading the
ALTEV register.
USB_WARN
Warning Event
This bit indicates that one of the unmasked bits in the FIFO
Warning Event (FWEV) register has been set to 1. This bit is
cleared to 0 by reading the FWEV register.
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Table 478: USB_MAMSK_REG (0x5000180E)
Bit
Mode Symbol
Description
Reset
15:12
11
-
-
Reserved
0x0
0x0
R/W
USB_M_CH_EV
The Main Mask Register masks out events reported in the
MAEV registers. A bit set to 1, enables the interrupts for the
respective event in the MAEV register. If the corresponding
bit is cleared to 0, interrupt generation for this event is disa-
bled. Same Bit Definition as MAEV Register
10
9
8
7
6
5
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
USB_M_EP0_NAK
USB_M_EP0_RX
USB_M_EP0_TX
USB_M_INTR
Same Bit Definition as MAEV Register
Same Bit Definition as MAEV Register
Same Bit Definition as MAEV Register
Same Bit Definition as MAEV Register
Same Bit Definition as MAEV Register
Same Bit Definition as MAEV Register
Same Bit Definition as MAEV Register
Same Bit Definition as MAEV Register
Same Bit Definition as MAEV Register
Same Bit Definition as MAEV Register
Same Bit Definition as MAEV Register
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
USB_M_RX_EV
USB_M_ULD
USB_M_NAK
USB_M_FRAME
USB_M_TX_EV
USB_M_ALT
USB_M_WARN
Table 479: USB_ALTEV_REG (0x50001810)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
USB_RESUME
Resume
0x0
Resume signalling is detected on the USB when the device
is in Suspend state (NFS in the NFSR register is set to SUS-
PEND), and a non IDLE signal is present on the USB, indi-
cating that this device should begin it's wake-up sequence
and enter Operational state. This bit is cleared when the reg-
ister is read.
6
R/W
USB_RESET
Reset
0x0
This bit is set to 1, when 2.5
μ
s of SEO have been detected on the upstream port. In
response, the functional state should be reset (NFS in the
NFSR register is set to RESET), where it must remain for at
least 100
μ
s. The functional state can then return to Operational state.
This bit is cleared when the register is read
5
4
R/W
R/W
USB_SD5
USB_SD3
Suspend Detect 5 ms
0x0
This bit is set to 1 after 5 ms of IDLE have been detected on
the upstream port, indicating that this device is permitted to
perform a remote wake-up operation. The resume may be
initiated under firmware control by writing the resume value
to the NFSR register. This bit is cleared when the register is
read.
Suspend Detect 3 ms
0x0
This bit is set to 1 after 3 ms of IDLE have been detected on
the upstream port, indicating that the device should be sus-
pended. The suspend occurs under firmware control by writ-
ing the suspend value to the Node Functional State (NFSR)
register. This bit is cleared when the register is read.
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Table 479: USB_ALTEV_REG (0x50001810)
Bit
Mode Symbol
Description
Reset
3
R/W
USB_EOP
End of Packet
0x0
A valid EOP sequence was been detected on the USB. It is
used when this device has initiated a Remote wake-up
sequence to indicate that the Resume sequence has been
acknowledged and completed by the host. This bit is cleared
when the register is read.
2
-
-
-
-
Reserved
Reserved
0x0
0x0
1:0
Table 480: USB_ALTMSK_REG (0x50001812)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
USB_M_RESUME
A bit set to 1 in this register enables automatic setting of the
ALT bit in the MAEV register when the respective event in
the ALTEV register occurs. Otherwise, setting MAEV.ALT bit
is disabled.
0x0
Same Bit Definition as ALTEV Register
6
R/W
R/W
R/W
R/W
-
USB_M_RESET
Same Bit Definition as ALTEV Register
Same Bit Definition as ALTEV Register
Same Bit Definition as ALTEV Register
Same Bit Definition as ALTEV Register
Reserved
0x0
0x0
0x0
0x0
0x0
0x0
5
USB_M_SD5
4
USB_M_SD3
3
USB_M_EOP
2
-
-
1:0
-
Reserved
Table 481: USB_TXEV_REG (0x50001814)
Bit
Mode Symbol
Description
Reset
0x0
15:7
6:4
-
-
Reserved
R
USB_TXUDRRN31
Transmit Underrun n: 3:1
0x0
The bit n is a copy of the respective TX_URUN bit from the
corresponding Transmit Status register (TXSn). Whenever
any of the Transmit FIFOs underflows, the respective
TXUDRRN bit is set to 1. These bits are cleared to 0 when
the corresponding Transmit Status register is read
3
-
-
Reserved
0x0
0x0
2:0
R
USB_TXFIFO31
Transmit FIFO n: 3:1
The bit n is a copy of the TX_DONE bit from the correspond-
ing Transmit Status register (TXSn). A bit is set to 1 when the
IN transaction for the corresponding transmit endpoint n has
been completed. These bits are cleared to 0 when the corre-
sponding TXSn register is read.
Table 482: USB_TXMSK_REG (0x50001816)
Bit
Mode Symbol
Description
Reset
15:7
-
-
Reserved
0x0
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Table 482: USB_TXMSK_REG (0x50001816)
Bit
Mode Symbol
Description
Reset
6:4
R/W
USB_M_TXUDRRN3
1
The Transmit Mask Register is used to select the bits of the
TXEV registers, which causes the TX_EV bit in the MAEV
register to be set to 1. When a bit is set to 1 and the corre-
sponding bit in the TXEV register is set to 1, the TX_EV bit in
the MAEV register is set to1. When cleared to 0, the corre-
sponding bit in the TXEV register does not cause TX_EV to
be set to 1. Same Bit Definition as TXEV Register
0x0
3
-
-
Reserved
0x0
0x0
2:0
R/W
USB_M_TXFIFO31
Same Bit Definition as TXEV Register
Table 483: USB_RXEV_REG (0x50001818)
Bit
Mode Symbol
Description
Reset
0x0
15:7
6:4
-
-
Reserved
R
USB_RXOVRRN31
Receive Overrun n: 3:1
0x0
The bit n is set to 1 in the event of an overrun condition in the
corresponding receive FIFO n. They are cleared to 0 when
the register is read. The firmware must check the respective
RX_ERR bits that packets received for the other receive
endpoints (EP2, EP4 and EP6, ) are not corrupted by errors,
as these endpoints support data streaming (packets which
are longer than the actual FIFO depth).
3
-
-
Reserved
0x0
0x0
2:0
R
USB_RXFIFO31
Receive FIFO n: 3:1
The bit n is set to 1 whenever either RX_ERR or RX_LAST
in the respective Receive Status register (RXSn) is set to 1.
Reading the corresponding RXSn register automatically
clears these bits.The CoR function is disabled, when the
Freeze signal is asserted.The USB node discards all packets
for Endpoint 0 received with errors. This is necessary in case
of retransmission due to media errors, ensuring that a good
copy of a SETUP packet is captured. Otherwise, the FIFO
may potentially be tied up, holding corrupted data and una-
ble to receive a retransmission of the same packet.
If data streaming is used for the receive endpoints (EP2,
EP4 and EP6, EP8) the firmware must check the respective
RX_ERR bits to ensure the packets received are not cor-
rupted by errors.
Table 484: USB_RXMSK_REG (0x5000181A)
Bit
Mode Symbol
Description
Reset
0x0
15:7
6:4
-
-
Reserved
R/W
USB_M_RXOVRRN3 The Receive Mask Register is used to select the bits of the
0x0
1
RXEV registers, which causes the RX_EV bit in the MAEV
register to be set to 1. When set to 1 and the corresponding
bit in the RXEV register is set to 1, RX_EV bit in the MAEV
register is set to1. When cleared to 0, the corresponding bit
in the RXEV register does not cause RX_EV to be set to1.
Same Bit Definition as RXEV Register
3
-
-
Reserved
0x0
0x0
2:0
R/W
USB_M_RXFIFO31
Same Bit Definition as RXEV Register
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Table 485: USB_NAKEV_REG (0x5000181C)
Bit
Mode Symbol
Description
Reset
15:7
6:4
-
-
Reserved
0x0
0x0
R
USB_OUT31
OUT n: 3:1
The bit n is set to 1 when a NAK handshake is generated for
an enabled address/endpoint combination (AD_EN in the
FAR register is set to 1 and EP_EN in the EPCx register is
set to 1) in response to an OUT token. This bit is not set if
NAK is generated as result of an overrun condition. It is
cleared when the register is read.
3
-
-
Reserved
0x0
0x0
2:0
R
USB_IN31
IN n: 3:1
The bit n is set to 1 when a NAK handshake is generated for
an enabled address/endpoint combination (AD_EN in the
Function Address, FAR, register is set to 1 and EP_EN in the
Endpoint Control, EPCx, register is set to 1) in response to
an IN token. This bit is cleared when the register is read.
Table 486: USB_NAKMSK_REG (0x5000181E)
Bit
Mode Symbol
Description
Reset
0x0
15:7
6:4
-
-
Reserved
R/W
USB_M_OUT31
When set and the corresponding bit in the NAKEV register is
set, the NAK bit in the MAEV register is set. When cleared,
the corresponding bit in the NAKEV register does not cause
NAK to be set. Same Bit Definition as NAKEV Register
0x0
3
-
-
Reserved
0x0
0x0
2:0
R/W
USB_M_IN31
Same Bit Definition as NAKEV Register
Table 487: USB_FWEV_REG (0x50001820)
Bit
Mode Symbol
Description
Reset
0x0
15:7
6:4
-
-
Reserved
R
USB_RXWARN31
Receive Warning n: 3:1
0x0
The bit n is set to 1 when the respective receive endpoint
FIFO reaches the warning limit, as specified by the RFWL
bits of the respective EPCx register. This bit is cleared when
the warning condition is cleared by either reading data from
the FIFO or when the FIFO is flushed.
3
-
-
Reserved
0x0
0x0
2:0
R
USB_TXWARN31
Transmit Warning n: 3:1
The bit n is set to 1 when the respective transmit endpoint
FIFO reaches the warning limit, as specified by the TFWL
bits of the respective TXCn register, and transmission from
the respective endpoint is enabled. This bit is cleared when
the warning condition is cleared by either writing new data to
the FIFO when the FIFO is flushed, or when transmission is
done, as indicated by the TX_DONE bit in the TXSn register.
Table 488: USB_FWMSK_REG (0x50001822)
Bit
Mode Symbol
Description
Reset
15:7
-
-
Reserved
0x0
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Table 488: USB_FWMSK_REG (0x50001822)
Bit
Mode Symbol
Description
Reset
6:4
R/W
USB_M_RXWARN31
The FIFO Warning Mask Register selects, which FWEV bits
are reported in the MAEV register. A bit set to 1 and the cor-
responding bit in the FWEV register is set 1, causes the
WARN bit in the MAEV register to be set to 1. When cleared
to 0, the corresponding bit in the FWEV register does not
cause WARN to be set to 1. Same Bit Definition as FWEV
Register
0x0
3
-
-
Reserved
0x0
0x0
2:0
R/W
USB_M_TXWARN31
The FIFO Warning Mask Register selects, which FWEV bits
are reported in the MAEV register. A bit set to 1 and the cor-
responding bit in the FWEV register is set 1, causes the
WARN bit in the MAEV register to be set to 1. When cleared
to 0, the corresponding bit in the FWEV register does not
cause WARN to be set to 1. Same Bit Definition as FWEV
Register
Table 489: USB_FNH_REG (0x50001824)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
USB_MF
Missed SOF Flag
0x1
This flag is set to 1, when the frame number in a valid
received SOF does not match the expected next value, or
when an SOF is not received within 12060 bit times. This bit
is set by the hardware and is cleared by reading the FNH
register.
6
R
USB_UL
Unlock Flag
0x1
This bit indicates that at least two frames were received with-
out an expected frame number, or that no valid SOF was
received within 12060 bit times. If this bit is set, the frame
number from the next valid SOF packet is loaded in FN. This
bit is set by the hardware and is cleared by reading the FNH
register.
5
R
USB_RFC
Reset Frame Count
0x0
Writing a 1 to this bit resets the frame number to 00016, after
which this bit clears itself to 0 again. This bit always reads 0.
4:3
2:0
-
-
Reserved
0x0
0x0
R
USB_FN_10_8
Frame Number
This 3-bit field contains the three most significant bits (MSB)
of the current frame number, received in the last SOF
packet. If a valid frame number is not received within 12060
bit times (Frame Length Maximum, FLMAX, with tolerance)
of the previous change, the frame number is incremented
artificially. If two successive frames are missed or are incor-
rect, the current FN is frozen and loaded with the next frame
number from a valid SOF packet.
If the frame number low byte was read by firmware before
reading the FNH register, the user actually reads the con-
tents of a buffer register which holds the value of the three
frame number bits of this register when the low byte was
read. Therefore, the correct sequence to read the frame
number is: FNL, FNH. Read operations to the FNH register,
without first reading the Frame Number Low Byte (FNL) reg-
ister directly, read the actual value of the three MSBs of the
frame number.
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Table 490: USB_FNL_REG (0x50001826)
Bit
Mode Symbol
Description
Reset
15:8
7:0
-
-
Reserved
0x0
0x0
R
USB_FN
The Frame Number Low Byte Register holds the low byte of
the frame number. To ensure consistency, reading this low
byte causes the three frame number bits in the FNH register
to be locked until this register is read. The correct sequence
to read the frame number is: FNL, FNH.
Table 491: USB_UX20CDR_REG (0x5000183E)
Bit
15:8
7
Mode Symbol
Description
Reserved
Test bit
Reset
0x0
-
-
R
RPU_TEST7
0x0
6
R/W
RPU_TEST_SW2
0: Closes SW2 switch to reduced pull-up resistor connected
to the USB_Dp and USB_Dm.
0x0
1: Opens SW2 switch resistor connected to the USB_Dp and
USB_Dm (independent of the VBus state).
(Note 47)
5
4
R/W
R/W
RPU_TEST_SW1
RPU_TEST_EN
0: Enable the pull-up resistor on USB_Dp (SW1 closed)
1: Disable the pull-up resistor on USB_Dp (SW1 open)
(Independent of the VBus state).
0x0
0x0
(Note 47)
Pull-Up Resistor Test Enable
0: Normal operation
1: Enables the test features controlled by RPU_TEST_SW1,
RPU_TEST_SW1DM and RPU_TEST_SW2
(Note 47)
3
2
-
-
Reserved
0x0
0x0
R/W
RPU_TEST_SW1DM
0: Enable the pull-up resistor on USB_Dm (SW1DM closed)
1: Disable the pull-up resistor on USB_Dm (SW1DM open)
(Independent of the VBus state).
(Note 47)
1
0
R/W
R/W
RPU_RCDELAY
Test bit, must be kept 0
Test bit, must be kept 0
0x0
0x0
RPU_SSPROTEN
Table 492: USB_EPC0_REG (0x50001840)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
USB_STALL
Stall
0x0
Setting this bit to 1 causes the chip to generate STALL hand-
shakes under the following conditions:
- The transmit FIFO is enabled and an IN token is received.
- The receive FIFO is enabled and an OUT token is received.
Note: A SETUP token does not cause a STALL handshake
to be generated when this bit is set.
Upon transmitting the STALL handshake, the RX_LAST and
the TX_DONE bits in the respective Receive/Transmit Status
registers are set to 1.
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Table 492: USB_EPC0_REG (0x50001840)
Bit
Mode Symbol
Description
Reset
6
R/W
USB_DEF
Default Address
0x0
When set to 1, the device responds to the default address
regardless of the contents of FAR6-0/EP03-0 fields. When
an IN packet is transmitted for the endpoint, the DEF bit is
automatically cleared to 0.
This bit aids in the transition from default address to
assigned address. The transition from the default address
00000000000b to an address assigned during bus enumera-
tion may not occur in the middle of the SET_ADDRESS con-
trol sequence. This is necessary to complete the control
sequence. However, the address must change immediately
after this sequence finishes in order to avoid errors when
another control sequence immediately follows the
SET_ADDRESS command.
On USB reset, the firmware has 10 ms for set-up, and
should write 8016 to the FAR register and 0016 to the EPC0
register. On receipt of a SET_ADDRESS command, the firm-
ware must write 4016 to the EPC0 register and (8016 or
<assigned_function_address>) to the FAR register. It must
then queue a zero length IN packet to complete the status
phase of the SET_ADDRESS control sequence.
5:4
3:0
-
-
Reserved
0x0
0x0
R
USB_EP
Endpoint Address
This field holds the 4-bit Endpoint address. For Endpoint 0,
these bits are hardwired to 0000b. Writing a 1 to any of the
EP bits is ignored.
Table 493: USB_TXD0_REG (0x50001842)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
W
USB_TXFD
Transmit FIFO Data Byte
0x0
See
Bidirectional Control Endpoint FIFO0 on page 220
for a description of data handling.
The firmware is expected to write only the packet payload
data. The PID and CRC16 are created automatically.
Table 494: USB_TXS0_REG (0x50001844)
Bit
15:7
6
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
USB_ACK_STAT
Acknowledge Status
0x0
This bit indicates the status, as received from the host, of the
ACK for the packet previously sent. This bit is to be inter-
preted when TX_DONE is set to 1. It is set to 1, when an
ACK is received; otherwise, it remains cleared. This bit is
also cleared to 0, when this register is read.
5
R
R
USB_TX_DONE
USB_TCOUNT
Transmission Done
When set to 1, this bit indicates that a packet has completed
transmission. It is cleared to 0, when this register is read.
0x0
0x8
4:0
Transmission Count
This 5-bit field indicates the number of empty bytes available
in the FIFO. This field is never larger than 8 for Endpoint 0.
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Table 495: USB_TXC0_REG (0x50001846)
Bit
15:5
4
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
R/W
USB_IGN_IN
Ignore IN Tokens
When this bit is set to 1, the endpoint will ignore any IN
tokens directed to its configured address.
3
R/W
R/W
USB_FLUSH
Flush FIFO
0x0
0x0
Writing a 1 to this bit flushes all data from the control end-
point FIFOs, resets the endpoint to Idle state, clears the
FIFO read and write pointer, and then clears itself. If the end-
point is currently using the FIFO0 to transfer data on USB,
flushing is delayed until after the transfer is done. It is equiv-
alent to the FLUSH bit in the RXC0 register.
2
USB_TOGGLE_TX0
Toggle
This bit specifies the PID used when transmitting the packet.
A value of 0 causes a DATA0 PID to be generated, while a
value of 1 causes a DATA1 PID to be generated. This bit is
not altered by the hardware.
1
0
-
-
Reserved
0x0
0x0
R/W
USB_TX_EN
Transmission Enable
This bit enables data transmission from the FIFO. It is
cleared to 0 by hardware after transmitting a single packet,
or a STALL handshake, in response to an IN token. It must
be set to 1 by firmware to start packet transmission. The
RX_EN bit in the Receive Command 0 (RXC0) register takes
precedence over this bit; i.e. if RX_EN is set, TX_EN bit is
ignored until RX_EN is reset.
Zero length packets are indicated by setting this bit without
writing any data to the FIFO.
Table 496: USB_EP0_NAK_REG (0x50001848)
Bit
15:2
1
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
USB_EP0_OUTNAK
End point 0 OUT NAK
0x0
This bit n is set to 1 when a NAK handshake is generated for
an enabled address/endpoint combination (AD_EN in the
FAR register is set to 1) in response to an OUT token. This
bit is not set if NAK is generated as result of an overrun con-
dition. It is cleared when the register is read.
0
R
USB_EP0_INNAK
End point 0 IN NAK
0x0
This bit is set to 1 when a NAK handshake is generated for
an enabled address/endpoint combination (AD_EN in the
FAR register is set to 1) in response to an IN token. This bit
is cleared when the register is read.
Table 497: USB_RXD0_REG (0x5000184A)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 497: USB_RXD0_REG (0x5000184A)
Bit
Mode Symbol
USB_RXFD
Description
Reset
7:0
R
Receive FIFO Data Byte
0x0
See
Bidirectional Control Endpoint FIFO0 on page 220
for a description of data handling.
The firmware should expect to read only the packet payload
data. The PID and CRC16 are removed from the incoming
data stream automatically.
In TEST mode this register allow read/write access.
Table 498: USB_RXS0_REG (0x5000184C)
Bit
15:8
7
Mode Symbol
Description
Reserved
Reserved
Reset
0x0
-
-
-
-
0x0
6
R
USB_SETUP
Setup
0x0
This bit indicates that the setup packet has been received.
This bit is unchanged for zero length packets. It is cleared to
0 when this register is read.
5
R
USB_TOGGLE_RX0
Toggle
0x0
This bit specified the PID used when receiving the packet. A
value of 0 indicates that the last successfully received packet
had a DATA0 PID, while a value of 1 indicates that this
packet had a DATA1 PID. This bit is unchanged for zero
length packets. It is cleared to 0 when this register is read.
4
R
R
USB_RX_LAST
USB_RCOUNT
Receive Last Bytes
0x0
0x0
This bit indicates that an ACK was sent upon completion of a
successful receive operation. This bit is unchanged for zero
length packets. It is cleared to 0 when this register is read.
3:0
Receive Count
This 4-bit field contains the number of bytes presently in the
RX FIFO. This number is never larger than 8 for Endpoint 0.
Table 499: USB_RXC0_REG (0x5000184E)
Bit
15:6
5
Mode Symbol
Description
Reserved
Reserved
Reserved
Reset
0x0
-
-
-
-
0x0
4
-
-
0x0
3
R/W
USB_FLUSH
Flush
0x0
Writing a 1 to this bit flushes all data from the control end-
point FIFOs, resets the endpoint to Idle state, clears the
FIFO read and write pointer, and then clears itself. If the end-
point is currently using FIFO0 to transfer data on USB, flush-
ing is delayed until after the transfer is done. This bit is
cleared to 0 on reset. This bit is equivalent to FLUSH in the
TXC0 register.
2
1
R/W
R/W
USB_IGN_SETUP
USB_IGN_OUT
Ignore SETUP Tokens
When this bit is set to 1, the endpoint ignores any SETUP
tokens directed to its configured address.
0x0
0x0
Ignore OUT Tokens
When this bit is set to 1, the endpoint ignores any OUT
tokens directed to its configured address.
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Table 499: USB_RXC0_REG (0x5000184E)
Bit
Mode Symbol
R/W USB_RX_EN
Description
Reset
0
Receive Enable
0x0
OUT packet reception is disabled after every data packet is
received, or when a STALL handshake is returned in
response to an OUT token. A 1 must be written to this bit to
re-enable data reception. Reception of SETUP packets is
always enabled. In the case of back-to-back SETUP packets
(for a given endpoint) where a valid SETUP packet is
received with no other intervening non-SETUP tokens, the
Endpoint Controller discards the new SETUP packet and
returns an ACK handshake. If any other reasons prevent the
Endpoint Controller from accepting the SETUP packet, it
must not generate a handshake. This allows recovery from a
condition where the ACK of the first SETUP token was lost
by the host.
Table 500: USB_EPC1_REG (0x50001850)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
USB_STALL
Stall
0x0
Setting this bit to 1 causes the chip to generate STALL hand-
shakes under the following conditions:
The transmit FIFO is enabled and an IN token is received.
The receive FIFO is enabled and an OUT token is received.
Setting this bit to 1 does not generate a STALL handshake in
response to a SETUP token
6
5
-
-
Reserved
0x0
0x0
R/W
USB_ISO
Isochronous
When this bit is set to 1, the endpoint is isochronous. This
implies that no NAK is sent if the endpoint is not ready but
enabled; i.e. If an IN token is received and no data is availa-
ble in the FIFO to transmit, or if an OUT token is received
and the FIFO is full since there is no USB handshake for
isochronous transfers.
4
R/W
R/W
USB_EP_EN
Endpoint Enable
0x0
0x0
When this bit is set to 1, the EP[3:0] field is used in address
comparison, together with the AD[6:0] field in the FAR regis-
ter. See Section
36.8
for a description. When cleared to 0, the endpoint does not
respond to any token on the USB bus.
3:0
USB_EP
Endpoint Address
This 4-bit field holds the endpoint address.
Table 501: USB_TXD1_REG (0x50001852)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 501: USB_TXD1_REG (0x50001852)
Bit
Mode Symbol
USB_TXFD
Description
Reset
7:0
W
Transmit FIFO Data Byte
0x0
See
Transmit Endpoint FIFOs on page 222
for a description of endpoint FIFO data handling. The firm-
ware is expected to write only the packet payload data. PID
and CRC16 are inserted automatically in the transmit data
stream.
In TEST mode this register allow read/write access via the
core bus.
Table 502: USB_TXS1_REG (0x50001854)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
USB_TX_URUN
Transmit FIFO Underrun
0x0
This bit is set to 1, if the transmit FIFO becomes empty dur-
ing a transmission, and no new data is written to the FIFO. If
so, the Media Access Controller (MAC) forces a bit stuff error
followed by an EOP. This bit is cleared to 0, when this regis-
ter is read.
6
R
USB_ACK_STAT
Acknowledge Status
0x0
This bit is interpreted when TX_DONE is set. It's function dif-
fers depending on whether ISO (ISO in the EPCx register is
set) or non-ISO operation (ISO is reset) is used.
For non-ISO operation, this bit indicates the acknowledge
status (from the host) about the ACK for the previously sent
packet. This bit itself is set to 1, when an ACK is received;
otherwise, it is cleared to 0.
For ISO operation, this bit is set if a frame number LSB
match (see IGN_ISOMSK bit in the USB_TXCx_REG)
occurs, and data was sent in response to an IN token. Other-
wise, this bit is cleared to 0, the FIFO is flushed and
TX_DONE is set.
This bit is also cleared to 0, when this register is read.
5
R
USB_TX_DONE
Transmission Done
0x0
When set to 1, this bit indicates that the endpoint responded
to a USB packet. Three conditions can cause this bit to be
set:
A data packet completed transmission in response to an IN
token with non-ISO operation.
The endpoint sent a STALL handshake in response to an IN
token
A scheduled ISO frame was transmitted or discarded.
This bit is cleared to 0 when this register is read.
4:0
R
USB_TCOUNT
Transmission Count
0x1F
This 5-bit field holds the number of empty bytes available in
the FIFO. If this number is greater than 31, a value of 31 is
actually reported.
Table 503: USB_TXC1_REG (0x50001856)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 503: USB_TXC1_REG (0x50001856)
Bit
Mode Symbol
Description
Reset
7
R/W
USB_IGN_ISOMSK
Ignore ISO Mask
0x0
This bit has an effect only if the endpoint is set to be isochro-
nous. If set to 1, this bit disables locking of specific frame
numbers with the alternate function of the TOGGLE bit. Thus
data is transmitted upon reception of the next IN token. If
cleared to 0, data is only transmitted when FNL0 matches
TOGGLE. This bit is cleared to 0 after reset.
6:5
R/W
USB_TFWL
Transmit FIFO Warning Limit
0x0
These bits specify how many more bytes can be transmitted
from the respective FIFO before an underrun condition
occurs. If the number of bytes remaining in the FIFO is equal
to or less than the selected warning limit, the TXWARN bit in
the FWEV register is set. To avoid interrupts caused by set-
ting this bit while the FIFO is being filled before a transmis-
sion begins, TXWARN is only set when transmission from
the endpoint is enabled (TX_ENn in the TXCn register is
set).
TFWL[1:0] :
00: TFWL disabled
01: Less than 5 bytes remaining in FIFO
10: Less than 9 bytes remaining in FIFO
11: Less than 17 bytes remaining in FIFO
4
R/W
USB_RFF
Refill FIFO
0x0
Setting the LAST bit to 1 automatically saves the Transmit
Read Pointer (TXRP) to a buffer. When the RFF bit is set to
1, the buffered TXRP is reloaded into the TXRP. This allows
the user to repeat the last transaction if no ACK was
received from the host. If the MAC is currently using the
FIFO to transmit, TXRP is reloaded only after the transmis-
sion is complete. After reload, this bit is cleared to 0 by hard-
ware.
3
2
R/W
R/W
USB_FLUSH
Flush FIFO
0x0
0x0
Writing a 1 to this bit flushes all data from the corresponding
transmit FIFO, resets the endpoint to Idle state, and clears
both the FIFO read and write pointers. If the MAC is currently
using the FIFO to transmit, data is flushed after the transmis-
sion is complete. After data flushing, this bit is cleared to 0 by
hardware.
USB_TOGGLE_TX
Toggle
The function of this bit differs depending on whether ISO
(ISO bit in the EPCn register is set to 1) or non-ISO opera-
tion (ISO bit is cleared to 0) is used.
For non-ISO operation, it specifies the PID used when trans-
mitting the packet. A value of 0 causes a DATA0 PID to be
generated, while a value of 1 causes a DATA1 PID to be
generated.
For ISO operation, this bit and the LSB of the frame counter
(FNL0) act as a mask for the TX_EN bit to allow pre-queuing
of packets to specific frame numbers; I.e. transmission is
enabled only if bit 0 in the FNL register is set to TOGGLE. If
an IN token is not received while this condition is true, the
contents of the FIFO are flushed with the next SOF. If the
endpoint is set to ISO, data is always transferred with a
DATA0 PID.
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Table 503: USB_TXC1_REG (0x50001856)
Bit
Mode Symbol
R/W USB_LAST
Description
Reset
0x0
1
Last Byte
Setting this bit to 1 indicates that the entire packet has been
written into the FIFO. This is used especially for streaming
data to the FIFO while the actual transmission occurs. If the
LAST bit is not set to 1 and the transmit FIFO becomes
empty during a transmission, a stuff error followed by an
EOP is forced on the bus. Zero length packets are indicated
by setting this bit without writing any data to the FIFO.
The transmit state machine transmits the payload data,
CRC16 and the EOP signal before clearing this bit.
0
R/W
USB_TX_EN
Transmission Enable
0x0
This bit enables data transmission from the FIFO. It is
cleared to 0 by hardware after transmitting a single packet or
after a STALL handshake in response to an IN token. It must
be set to 1 by firmware to start packet transmission.
Table 504: USB_EPC2_REG (0x50001858)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
USB_STALL
Stall
0x0
Setting this bit to 1 causes the chip to generate STALL hand-
shakes under the following conditions:
The transmit FIFO is enabled and an IN token is received.
The receive FIFO is enabled and an OUT token is received.
Setting this bit to 1 does not generate a STALL handshake in
response to a SETUP token
6
5
-
-
Reserved
0x0
0x0
R/W
USB_ISO
Isochronous
When this bit is set to 1, the endpoint is isochronous. This
implies that no NAK is sent if the endpoint is not ready but
enabled; i.e. If an IN token is received and no data is availa-
ble in the FIFO to transmit, or if an OUT token is received
and the FIFO is full since there is no USB handshake for
isochronous transfers.
4
R/W
R/W
USB_EP_EN
Endpoint Enable
0x0
0x0
When this bit is set to 1, the EP[3:0] field is used in address
comparison, together with the AD[6:0] field in the FAR regis-
ter. See Section
36.8
for a description. When cleared to 0, the endpoint does not
respond to any token on the USB bus.
3:0
USB_EP
Endpoint Address
This 4-bit field holds the endpoint address.
Table 505: USB_RXD1_REG (0x5000185A)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 505: USB_RXD1_REG (0x5000185A)
Bit
Mode Symbol
USB_RXFD
Description
Reset
7:0
R
Receive FIFO Data Byte
0x0
See
Receive Endpoint FIFO on page 223
for a description of Endpoint FIFO data handling.The firm-
ware should expect to read only the packet payload data.
The PID and CRC16 are terminated by the receive state
machine.
In TEST mode this register allow read/write access via the
core bus.
Table 506: USB_RXS1_REG (0x5000185C)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
USB_RX_ERR
Receive Error
0x0
When set to 1, this bit indicates a media error, such as bit-
stuffing or CRC. If this bit is set to 1, the firmware must flush
the respective FIFO.
6
5
R
R
USB_SETUP
Setup
0x0
0x0
This bit indicates that the setup packet has been received. It
is cleared when this register is read.
USB_TOGGLE_RX
Toggle
The function of this bit differs depending on whether ISO
(ISO in the EPCn register is set) or non-ISO operation (ISO
is reset) is used.
For non-ISO operation, a value of 0 indicates that the last
successfully received packet had a DATA0 PID, while a
value of 1 indicates that this packet had a DATA1 PID.
For ISO operation, this bit reflects the LSB of the frame num-
ber (FNL0) after a packet was successfully received for this
endpoint.
This bit is reset to 0 by reading the RXSn register.
4
R
R
USB_RX_LAST
USB_RCOUNT
Receive Last
0x0
0x0
This bit indicates that an ACK was sent upon completion of a
successful receive operation. This bit is cleared to 0 when
this register is read.
3:0
Receive Counter
This 4-bit field contains the number of bytes presently in the
endpoint receive FIFO. If this number is greater than 15, a
value of 15 is actually reported.
Table 507: USB_RXC1_REG (0x5000185E)
Bit
Mode Symbol
Description
Reset
0x0
15:7
6:5
-
-
Reserved
R/W
USB_RFWL
Receive FIFO Warning Limit
0x0
These bits specify how many more bytes can be received to
the respective FIFO before an overrun condition occurs. If
the number of empty bytes remaining in the FIFO is equal to
or less than the selected warning limit, the RXWARN bit in
the FWEV register is set to 1.RFWL[1:0] :
00: RFWL disabled
01: Less than 5 bytes remaining in FIFO
10: Less than 9 bytes remaining in FIFO
11: Less than 17 bytes remaining in FIFO
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Table 507: USB_RXC1_REG (0x5000185E)
Bit
4
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
3
R/W
USB_FLUSH
Flush FIFO
Writing a 1 to this bit flushes all data from the corresponding
receive FIFO, resets the endpoint to Idle state, and resets
both the FIFO read and write pointers. If the MAC is currently
using the FIFO to receive data, flushing is delayed until after
receiving is completed.
2
R/W
USB_IGN_SETUP
Ignore SETUP Tokens
0x0
When this bit is set to 1, the endpoint ignores any SETUP
tokens directed to its configured address.
1
0
-
-
Reserved
0x0
0x0
R/W
USB_RX_EN
Receive Enable
OUT packet cannot be received after every data packet is
received, or when a STALL handshake is returned in
response to an OUT token. This bit must be written with a 1
to re-enable data reception. SETUP packets can always be
received. In the case of back-to-back SETUP packets (for a
given endpoint) where a valid SETUP packet has been
received with no other intervening non-SETUP tokens, the
receive state machine discards the new SETUP packet and
returns an ACK handshake. If, for any other reason, the
receive state machine cannot accept the SETUP packet, no
HANDSHAKE should be generated.
Table 508: USB_EPC3_REG (0x50001860)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
USB_STALL
Stall
0x0
Setting this bit to 1 causes the chip to generate STALL hand-
shakes under the following conditions:
The transmit FIFO is enabled and an IN token is received.
The receive FIFO is enabled and an OUT token is received.
Setting this bit to 1 does not generate a STALL handshake in
response to a SETUP token
6
5
-
-
Reserved
0x0
0x0
R/W
USB_ISO
Isochronous
When this bit is set to 1, the endpoint is isochronous. This
implies that no NAK is sent if the endpoint is not ready but
enabled; i.e. If an IN token is received and no data is availa-
ble in the FIFO to transmit, or if an OUT token is received
and the FIFO is full since there is no USB handshake for
isochronous transfers.
4
R/W
R/W
USB_EP_EN
Endpoint Enable
0x0
When this bit is set to 1, the EP[3:0] field is used in address
comparison, together with the AD[6:0] field in the FAR regis-
ter. See Section
36.8
for a description. When cleared to 0, the endpoint does not
respond to any token on the USB bus.
3:0
USB_EP
Endpoint Address
0x0
This 4-bit field holds the endpoint address.
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Table 509: USB_TXD2_REG (0x50001862)
Bit
Mode Symbol
Description
Reset
15:8
7:0
-
-
Reserved
0x0
0x0
W
USB_TXFD
Transmit FIFO Data Byte
See
Transmit Endpoint FIFOs on page 222
for a description of endpoint FIFO data handling. The firm-
ware is expected to write only the packet payload data. PID
and CRC16 are inserted automatically in the transmit data
stream.
In TEST mode this register allow read/write access via the
core bus.
Table 510: USB_TXS2_REG (0x50001864)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
USB_TX_URUN
Transmit FIFO Underrun
0x0
This bit is set to 1, if the transmit FIFO becomes empty dur-
ing a transmission, and no new data is written to the FIFO. If
so, the Media Access Controller (MAC) forces a bit stuff error
followed by an EOP. This bit is cleared to 0, when this regis-
ter is read.
6
R
USB_ACK_STAT
Acknowledge Status
0x0
This bit is interpreted when TX_DONE is set. It's function dif-
fers depending on whether ISO (ISO in the EPCx register is
set) or non-ISO operation (ISO is reset) is used.
For non-ISO operation, this bit indicates the acknowledge
status (from the host) about the ACK for the previously sent
packet. This bit itself is set to 1, when an ACK is received;
otherwise, it is cleared to 0.
For ISO operation, this bit is set if a frame number LSB
match (see IGN_ISOMSK bit in the USB_TXCx_REG)
occurs, and data was sent in response to an IN token. Other-
wise, this bit is cleared to 0, the FIFO is flushed and
TX_DONE is set.
This bit is also cleared to 0, when this register is read.
5
R
USB_TX_DONE
Transmission Done
0x0
When set to 1, this bit indicates that the endpoint responded
to a USB packet. Three conditions can cause this bit to be
set:
A data packet completed transmission in response to an IN
token with non-ISO operation.
The endpoint sent a STALL handshake in response to an IN
token
A scheduled ISO frame was transmitted or discarded.
This bit is cleared to 0 when this register is read.
4:0
R
USB_TCOUNT
Transmission Count
0x1F
This 5-bit field holds the number of empty bytes available in
the FIFO. If this number is greater than 31, a value of 31 is
actually reported.
Table 511: USB_TXC2_REG (0x50001866)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 511: USB_TXC2_REG (0x50001866)
Bit
Mode Symbol
Description
Reset
7
R/W
USB_IGN_ISOMSK
Ignore ISO Mask
0x0
This bit has an effect only if the endpoint is set to be isochro-
nous. If set to 1, this bit disables locking of specific frame
numbers with the alternate function of the TOGGLE bit. Thus
data is transmitted upon reception of the next IN token. If
cleared to 0, data is only transmitted when FNL0 matches
TOGGLE. This bit is cleared to 0 after reset.
6:5
R/W
USB_TFWL
Transmit FIFO Warning Limit
0x0
These bits specify how many more bytes can be transmitted
from the respective FIFO before an underrun condition
occurs. If the number of bytes remaining in the FIFO is equal
to or less than the selected warning limit, the TXWARN bit in
the FWEV register is set. To avoid interrupts caused by set-
ting this bit while the FIFO is being filled before a transmis-
sion begins, TXWARN is only set when transmission from
the endpoint is enabled (TX_ENn in the TXCn register is
set).
TFWL[1:0] :
00: TFWL disabled
01: Less than 5 bytes remaining in FIFO
10: Less than 9 bytes remaining in FIFO
11: Less than 17 bytes remaining in FIFO
4
R/W
USB_RFF
Refill FIFO
0x0
Setting the LAST bit to 1 automatically saves the Transmit
Read Pointer (TXRP) to a buffer. When the RFF bit is set to
1, the buffered TXRP is reloaded into the TXRP. This allows
the user to repeat the last transaction if no ACK was
received from the host. If the MAC is currently using the
FIFO to transmit, TXRP is reloaded only after the transmis-
sion is complete. After reload, this bit is cleared to 0 by hard-
ware.
3
2
R/W
R/W
USB_FLUSH
Flush FIFO
0x0
0x0
Writing a 1 to this bit flushes all data from the corresponding
transmit FIFO, resets the endpoint to Idle state, and clears
both the FIFO read and write pointers. If the MAC is currently
using the FIFO to transmit, data is flushed after the transmis-
sion is complete. After data flushing, this bit is cleared to 0 by
hardware.
USB_TOGGLE_TX
Toggle
The function of this bit differs depending on whether ISO
(ISO bit in the EPCn register is set to 1) or non-ISO opera-
tion (ISO bit is cleared to 0) is used.
For non-ISO operation, it specifies the PID used when trans-
mitting the packet. A value of 0 causes a DATA0 PID to be
generated, while a value of 1 causes a DATA1 PID to be
generated.
For ISO operation, this bit and the LSB of the frame counter
(FNL0) act as a mask for the TX_EN bit to allow pre-queuing
of packets to specific frame numbers; I.e. transmission is
enabled only if bit 0 in the FNL register is set to TOGGLE. If
an IN token is not received while this condition is true, the
contents of the FIFO are flushed with the next SOF. If the
endpoint is set to ISO, data is always transferred with a
DATA0 PID.
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Table 511: USB_TXC2_REG (0x50001866)
Bit
Mode Symbol
R/W USB_LAST
Description
Reset
0x0
1
Last Byte
Setting this bit to 1 indicates that the entire packet has been
written into the FIFO. This is used especially for streaming
data to the FIFO while the actual transmission occurs. If the
LAST bit is not set to 1 and the transmit FIFO becomes
empty during a transmission, a stuff error followed by an
EOP is forced on the bus. Zero length packets are indicated
by setting this bit without writing any data to the FIFO.
The transmit state machine transmits the payload data,
CRC16 and the EOP signal before clearing this bit.
0
R/W
USB_TX_EN
Transmission Enable
0x0
This bit enables data transmission from the FIFO. It is
cleared to 0 by hardware after transmitting a single packet or
after a STALL handshake in response to an IN token. It must
be set to 1 by firmware to start packet transmission.
Table 512: USB_EPC4_REG (0x50001868)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
USB_STALL
Stall
0x0
Setting this bit to 1 causes the chip to generate STALL hand-
shakes under the following conditions:
The transmit FIFO is enabled and an IN token is received.
The receive FIFO is enabled and an OUT token is received.
Setting this bit to 1 does not generate a STALL handshake in
response to a SETUP token
6
5
-
-
Reserved
0x0
0x0
R/W
USB_ISO
Isochronous
When this bit is set to 1, the endpoint is isochronous. This
implies that no NAK is sent if the endpoint is not ready but
enabled; i.e. If an IN token is received and no data is availa-
ble in the FIFO to transmit, or if an OUT token is received
and the FIFO is full since there is no USB handshake for
isochronous transfers.
4
R/W
R/W
USB_EP_EN
Endpoint Enable
0x0
0x0
When this bit is set to 1, the EP[3:0] field is used in address
comparison, together with the AD[6:0] field in the FAR regis-
ter. See Section
36.8
for a description. When cleared to 0, the endpoint does not
respond to any token on the USB bus.
3:0
USB_EP
Endpoint Address
This 4-bit field holds the endpoint address.
Table 513: USB_RXD2_REG (0x5000186A)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 513: USB_RXD2_REG (0x5000186A)
Bit
Mode Symbol
USB_RXFD
Description
Reset
7:0
R
Receive FIFO Data Byte
0x0
See
Receive Endpoint FIFO on page 223
for a description of Endpoint FIFO data handling.The firm-
ware should expect to read only the packet payload data.
The PID and CRC16 are terminated by the receive state
machine.
In TEST mode this register allow read/write access via the
core bus.
Table 514: USB_RXS2_REG (0x5000186C)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
USB_RX_ERR
Receive Error
0x0
When set to 1, this bit indicates a media error, such as bit-
stuffing or CRC. If this bit is set to 1, the firmware must flush
the respective FIFO.
6
5
R
R
USB_SETUP
Setup
0x0
0x0
This bit indicates that the setup packet has been received. It
is cleared when this register is read.
USB_TOGGLE_RX
Toggle
The function of this bit differs depending on whether ISO
(ISO in the EPCn register is set) or non-ISO operation (ISO
is reset) is used.
For non-ISO operation, a value of 0 indicates that the last
successfully received packet had a DATA0 PID, while a
value of 1 indicates that this packet had a DATA1 PID.
For ISO operation, this bit reflects the LSB of the frame num-
ber (FNL0) after a packet was successfully received for this
endpoint.
This bit is reset to 0 by reading the RXSn register.
4
R
R
USB_RX_LAST
USB_RCOUNT
Receive Last
0x0
0x0
This bit indicates that an ACK was sent upon completion of a
successful receive operation. This bit is cleared to 0 when
this register is read.
3:0
Receive Counter
This 4-bit field contains the number of bytes presently in the
endpoint receive FIFO. If this number is greater than 15, a
value of 15 is actually reported.
Table 515: USB_RXC2_REG (0x5000186E)
Bit
Mode Symbol
Description
Reset
0x0
15:7
6:5
-
-
Reserved
R/W
USB_RFWL
Receive FIFO Warning Limit
0x0
These bits specify how many more bytes can be received to
the respective FIFO before an overrun condition occurs. If
the number of empty bytes remaining in the FIFO is equal to
or less than the selected warning limit, the RXWARN bit in
the FWEV register is set to 1.RFWL[1:0] :
00: RFWL disabled
01: Less than 5 bytes remaining in FIFO
10: Less than 9 bytes remaining in FIFO
11: Less than 17 bytes remaining in FIFO
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Table 515: USB_RXC2_REG (0x5000186E)
Bit
4
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
3
R/W
USB_FLUSH
Flush FIFO
Writing a 1 to this bit flushes all data from the corresponding
receive FIFO, resets the endpoint to Idle state, and resets
both the FIFO read and write pointers. If the MAC is currently
using the FIFO to receive data, flushing is delayed until after
receiving is completed.
2
R/W
USB_IGN_SETUP
Ignore SETUP Tokens
0x0
When this bit is set to 1, the endpoint ignores any SETUP
tokens directed to its configured address.
1
0
-
-
Reserved
0x0
0x0
R/W
USB_RX_EN
Receive Enable
OUT packet cannot be received after every data packet is
received, or when a STALL handshake is returned in
response to an OUT token. This bit must be written with a 1
to re-enable data reception. SETUP packets can always be
received. In the case of back-to-back SETUP packets (for a
given endpoint) where a valid SETUP packet has been
received with no other intervening non-SETUP tokens, the
receive state machine discards the new SETUP packet and
returns an ACK handshake. If, for any other reason, the
receive state machine cannot accept the SETUP packet, no
HANDSHAKE should be generated.
Table 516: USB_EPC5_REG (0x50001870)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
USB_STALL
Stall
0x0
Setting this bit to 1 causes the chip to generate STALL hand-
shakes under the following conditions:
The transmit FIFO is enabled and an IN token is received.
The receive FIFO is enabled and an OUT token is received.
Setting this bit to 1 does not generate a STALL handshake in
response to a SETUP token
6
5
-
-
Reserved
0x0
0x0
R/W
USB_ISO
Isochronous
When this bit is set to 1, the endpoint is isochronous. This
implies that no NAK is sent if the endpoint is not ready but
enabled; i.e. If an IN token is received and no data is availa-
ble in the FIFO to transmit, or if an OUT token is received
and the FIFO is full since there is no USB handshake for
isochronous transfers.
4
R/W
R/W
USB_EP_EN
Endpoint Enable
0x0
When this bit is set to 1, the EP[3:0] field is used in address
comparison, together with the AD[6:0] field in the FAR regis-
ter. See Section
36.8
for a description. When cleared to 0, the endpoint does not
respond to any token on the USB bus.
3:0
USB_EP
Endpoint Address
0x0
This 4-bit field holds the endpoint address.
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Table 517: USB_TXD3_REG (0x50001872)
Bit
Mode Symbol
Description
Reset
15:8
7:0
-
-
Reserved
0x0
0x0
W
USB_TXFD
Transmit FIFO Data Byte
See
Transmit Endpoint FIFOs on page 222
for a description of endpoint FIFO data handling. The firm-
ware is expected to write only the packet payload data. PID
and CRC16 are inserted automatically in the transmit data
stream.
In TEST mode this register allow read/write access via the
core bus.
Table 518: USB_TXS3_REG (0x50001874)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
USB_TX_URUN
Transmit FIFO Underrun
0x0
This bit is set to 1, if the transmit FIFO becomes empty dur-
ing a transmission, and no new data is written to the FIFO. If
so, the Media Access Controller (MAC) forces a bit stuff error
followed by an EOP. This bit is cleared to 0, when this regis-
ter is read.
6
R
USB_ACK_STAT
Acknowledge Status
0x0
This bit is interpreted when TX_DONE is set. It's function dif-
fers depending on whether ISO (ISO in the EPCx register is
set) or non-ISO operation (ISO is reset) is used.
For non-ISO operation, this bit indicates the acknowledge
status (from the host) about the ACK for the previously sent
packet. This bit itself is set to 1, when an ACK is received;
otherwise, it is cleared to 0.
For ISO operation, this bit is set if a frame number LSB
match (see IGN_ISOMSK bit in the USB_TXCx_REG)
occurs, and data was sent in response to an IN token. Other-
wise, this bit is cleared to 0, the FIFO is flushed and
TX_DONE is set.
This bit is also cleared to 0, when this register is read.
5
R
USB_TX_DONE
Transmission Done
0x0
When set to 1, this bit indicates that the endpoint responded
to a USB packet. Three conditions can cause this bit to be
set:
A data packet completed transmission in response to an IN
token with non-ISO operation.
The endpoint sent a STALL handshake in response to an IN
token
A scheduled ISO frame was transmitted or discarded.
This bit is cleared to 0 when this register is read.
4:0
R
USB_TCOUNT
Transmission Count
0x1F
This 5-bit field holds the number of empty bytes available in
the FIFO. If this number is greater than 31, a value of 31 is
actually reported.
Table 519: USB_TXC3_REG (0x50001876)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 519: USB_TXC3_REG (0x50001876)
Bit
Mode Symbol
Description
Reset
7
R/W
USB_IGN_ISOMSK
Ignore ISO Mask
0x0
This bit has an effect only if the endpoint is set to be isochro-
nous. If set to 1, this bit disables locking of specific frame
numbers with the alternate function of the TOGGLE bit. Thus
data is transmitted upon reception of the next IN token. If
cleared to 0, data is only transmitted when FNL0 matches
TOGGLE. This bit is cleared to 0 after reset.
6:5
R/W
USB_TFWL
Transmit FIFO Warning Limit
0x0
These bits specify how many more bytes can be transmitted
from the respective FIFO before an underrun condition
occurs. If the number of bytes remaining in the FIFO is equal
to or less than the selected warning limit, the TXWARN bit in
the FWEV register is set. To avoid interrupts caused by set-
ting this bit while the FIFO is being filled before a transmis-
sion begins, TXWARN is only set when transmission from
the endpoint is enabled (TX_ENn in the TXCn register is
set).
TFWL[1:0] :
00: TFWL disabled
01: Less than 5 bytes remaining in FIFO
10: Less than 9 bytes remaining in FIFO
11: Less than 17 bytes remaining in FIFO
4
R/W
USB_RFF
Refill FIFO
0x0
Setting the LAST bit to 1 automatically saves the Transmit
Read Pointer (TXRP) to a buffer. When the RFF bit is set to
1, the buffered TXRP is reloaded into the TXRP. This allows
the user to repeat the last transaction if no ACK was
received from the host. If the MAC is currently using the
FIFO to transmit, TXRP is reloaded only after the transmis-
sion is complete. After reload, this bit is cleared to 0 by hard-
ware.
3
2
R/W
R/W
USB_FLUSH
Flush FIFO
0x0
0x0
Writing a 1 to this bit flushes all data from the corresponding
transmit FIFO, resets the endpoint to Idle state, and clears
both the FIFO read and write pointers. If the MAC is currently
using the FIFO to transmit, data is flushed after the transmis-
sion is complete. After data flushing, this bit is cleared to 0 by
hardware.
USB_TOGGLE_TX
Toggle
The function of this bit differs depending on whether ISO
(ISO bit in the EPCn register is set to 1) or non-ISO opera-
tion (ISO bit is cleared to 0) is used.
For non-ISO operation, it specifies the PID used when trans-
mitting the packet. A value of 0 causes a DATA0 PID to be
generated, while a value of 1 causes a DATA1 PID to be
generated.
For ISO operation, this bit and the LSB of the frame counter
(FNL0) act as a mask for the TX_EN bit to allow pre-queuing
of packets to specific frame numbers; I.e. transmission is
enabled only if bit 0 in the FNL register is set to TOGGLE. If
an IN token is not received while this condition is true, the
contents of the FIFO are flushed with the next SOF. If the
endpoint is set to ISO, data is always transferred with a
DATA0 PID.
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Table 519: USB_TXC3_REG (0x50001876)
Bit
Mode Symbol
R/W USB_LAST
Description
Reset
0x0
1
Last Byte
Setting this bit to 1 indicates that the entire packet has been
written into the FIFO. This is used especially for streaming
data to the FIFO while the actual transmission occurs. If the
LAST bit is not set to 1 and the transmit FIFO becomes
empty during a transmission, a stuff error followed by an
EOP is forced on the bus. Zero length packets are indicated
by setting this bit without writing any data to the FIFO.
The transmit state machine transmits the payload data,
CRC16 and the EOP signal before clearing this bit.
0
R/W
USB_TX_EN
Transmission Enable
0x0
This bit enables data transmission from the FIFO. It is
cleared to 0 by hardware after transmitting a single packet or
after a STALL handshake in response to an IN token. It must
be set to 1 by firmware to start packet transmission.
Table 520: USB_EPC6_REG (0x50001878)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
USB_STALL
Stall
0x0
Setting this bit to 1 causes the chip to generate STALL hand-
shakes under the following conditions:
The transmit FIFO is enabled and an IN token is received.
The receive FIFO is enabled and an OUT token is received.
Setting this bit to 1 does not generate a STALL handshake in
response to a SETUP token
6
5
-
-
Reserved
0x0
0x0
R/W
USB_ISO
Isochronous
When this bit is set to 1, the endpoint is isochronous. This
implies that no NAK is sent if the endpoint is not ready but
enabled; i.e. If an IN token is received and no data is availa-
ble in the FIFO to transmit, or if an OUT token is received
and the FIFO is full since there is no USB handshake for
isochronous transfers.
4
R/W
R/W
USB_EP_EN
Endpoint Enable
0x0
0x0
When this bit is set to 1, the EP[3:0] field is used in address
comparison, together with the AD[6:0] field in the FAR regis-
ter. See Section
36.8
for a description. When cleared to 0, the endpoint does not
respond to any token on the USB bus.
3:0
USB_EP
Endpoint Address
This 4-bit field holds the endpoint address.
Table 521: USB_RXD3_REG (0x5000187A)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 521: USB_RXD3_REG (0x5000187A)
Bit
Mode Symbol
USB_RXFD
Description
Reset
7:0
R
Receive FIFO Data Byte
0x0
See
Receive Endpoint FIFO on page 223
for a description of Endpoint FIFO data handling.The firm-
ware should expect to read only the packet payload data.
The PID and CRC16 are terminated by the receive state
machine.
In TEST mode this register allow read/write access via the
core bus.
Table 522: USB_RXS3_REG (0x5000187C)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
USB_RX_ERR
Receive Error
0x0
When set to 1, this bit indicates a media error, such as bit-
stuffing or CRC. If this bit is set to 1, the firmware must flush
the respective FIFO.
6
5
R
R
USB_SETUP
Setup
0x0
0x0
This bit indicates that the setup packet has been received. It
is cleared when this register is read.
USB_TOGGLE_RX
Toggle
The function of this bit differs depending on whether ISO
(ISO in the EPCn register is set) or non-ISO operation (ISO
is reset) is used.
For non-ISO operation, a value of 0 indicates that the last
successfully received packet had a DATA0 PID, while a
value of 1 indicates that this packet had a DATA1 PID.
For ISO operation, this bit reflects the LSB of the frame num-
ber (FNL0) after a packet was successfully received for this
endpoint.
This bit is reset to 0 by reading the RXSn register.
4
R
R
USB_RX_LAST
USB_RCOUNT
Receive Last
0x0
0x0
This bit indicates that an ACK was sent upon completion of a
successful receive operation. This bit is cleared to 0 when
this register is read.
3:0
Receive Counter
This 4-bit field contains the number of bytes presently in the
endpoint receive FIFO. If this number is greater than 15, a
value of 15 is actually reported.
Table 523: USB_RXC3_REG (0x5000187E)
Bit
Mode Symbol
Description
Reset
0x0
15:7
6:5
-
-
Reserved
R/W
USB_RFWL
Receive FIFO Warning Limit
0x0
These bits specify how many more bytes can be received to
the respective FIFO before an overrun condition occurs. If
the number of empty bytes remaining in the FIFO is equal to
or less than the selected warning limit, the RXWARN bit in
the FWEV register is set to 1.RFWL[1:0] :
00: RFWL disabled
01: Less than 5 bytes remaining in FIFO
10: Less than 9 bytes remaining in FIFO
11: Less than 17 bytes remaining in FIFO
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Table 523: USB_RXC3_REG (0x5000187E)
Bit
4
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
3
R/W
USB_FLUSH
Flush FIFO
Writing a 1 to this bit flushes all data from the corresponding
receive FIFO, resets the endpoint to Idle state, and resets
both the FIFO read and write pointers. If the MAC is currently
using the FIFO to receive data, flushing is delayed until after
receiving is completed.
2
R/W
USB_IGN_SETUP
Ignore SETUP Tokens
0x0
When this bit is set to 1, the endpoint ignores any SETUP
tokens directed to its configured address.
1
0
-
-
Reserved
0x0
0x0
R/W
USB_RX_EN
Receive Enable
OUT packet cannot be received after every data packet is
received, or when a STALL handshake is returned in
response to an OUT token. This bit must be written with a 1
to re-enable data reception. SETUP packets can always be
received. In the case of back-to-back SETUP packets (for a
given endpoint) where a valid SETUP packet has been
received with no other intervening non-SETUP tokens, the
receive state machine discards the new SETUP packet and
returns an ACK handshake. If, for any other reason, the
receive state machine cannot accept the SETUP packet, no
HANDSHAKE should be generated.
Table 524: USB_DMA_CTRL_REG (0x500018D0)
Bit
Mode Symbol
Description
Reset
6
R/W
R/W
R/W
USB_DMA_EN
0 = USB DMA control off. (Normal operation)
1 = USB_DMA on. DMA channels 0 and 1 are connected by
USB Endpoint according bits USB_DMA_TX and
USB_DMA_RX
0x0
5:3
2:0
USB_DMA_TX
USB_DMA_RX
000 = DMA channels 1 is connected Tx USB Endpoint 1
001 = DMA channels 1 is connected Tx USB Endpoint 3
010 = DMA channels 1 is connected Tx USB Endpoint 5
100, 1xx = Reserved
0x0
0x0
000 = DMA channels 0 is connected Rx USB Endpoint 2
001 = DMA channels 0 is connected Rx USB Endpoint 4
010 = DMA channels 0 is connected Rx USB Endpoint 6
100, 1xx = Reserved
Table 525: USB_CHARGER_CTRL_REG (0x500018D4)
Bit
15:6
5
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
IDM_SINK_ON
0 = Disable
0x0
1 = Enable the Idm_sink to USBm
4
3
R/W
R/W
IDP_SINK_ON
VDM_SRC_ON
0 = Disable
1 = Enable the Idp_sink to USBp
0x0
0x0
0 = Disable
1 = Enable Vdm_src to USBm and USB_DCP_DET status
bit.
2
R/W
VDP_SRC_ON
0 = Disable
0x0
1 = Enable the Vdp_src to USB_CHG_DET status bit.
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Table 525: USB_CHARGER_CTRL_REG (0x500018D4)
Bit
Mode Symbol
Description
Reset
1
R/W
IDP_SRC_ON
0 = Disable
0x0
1 = Enable the Idp_src and Rdm_dwn.
0
R/W
USB_CHARGE_ON
0 = Disable USB charger detect circuit.
1 = Enable USB charger detect circuit.
0x0
Table 526: USB_CHARGER_STAT_REG (0x500018D6)
Bit
15:6
5
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
USB_DM_VAL2
0 = USBm <2.3V
1 = USBm >2.5V
0x0
4
3
2
1
R
R
R
R
USB_DP_VAL2
USB_DM_VAL
USB_DP_VAL
USB_CHG_DET
0: USBp < 2.3V
1: USBp > 2.5V
0x0
0x0
0x0
0x0
0 = USBm < 0.8V
1 = USBm > 1.5V (PS2 or Proprietary Charger)
0 = USBp < 0.8V
1 = USBp > 1.5V
0 = Standard downstream or nothing connected.
1 = Charging Downstream Port (CDP) or Dedicated Charg-
ing.
0
R
USB_DCP_DET
0 = Charging downstream port is detected.
1 = Dedicated charger is detected.
Control bit VDM_SRC_ON must be set to validate this status
bit.
0x0
Note: This register shows the actual status.
37.16 GPADC REGISTER FILE
Table 527: Register map GPADC
Address
Port
Description
0x50001900
0x50001902
0x50001904
0x50001906
0x50001908
0x5000190A
0x5000190C
GP_ADC_CTRL_REG
GP_ADC_CTRL2_REG
GP_ADC_CTRL3_REG
GP_ADC_OFFP_REG
GP_ADC_OFFN_REG
GP_ADC_CLEAR_INT_REG
GP_ADC_RESULT_REG
General Purpose ADC Control Register
General Purpose ADC Second Control Register
General Purpose ADC Third Control Register
General Purpose ADC Positive Offset Register
General Purpose ADC Negative Offset Register
General Purpose ADC Clear Interrupt Register
General Purpose ADC Result Register
Table 528: GP_ADC_CTRL_REG (0x50001900)
Bit
Mode Symbol
Description
1: Samples and disconnects VREF, should be refreshed fre-
quently. Note that the LDO consumpes power when bit is
set.
Reset
0x0
15
R/W
R/W
GP_ADC_LDO_ZER
O
14
13
GP_ADC_CHOP
0: Chopper mode off
0x0
1: Chopper mode enabled. Takes two samples with opposite
GP_ADC_SIGN to cancel the internal offset voltage of the
ADC; Highly recommended for DC-measurements.
R/W
GP_ADC_SIGN
0: Default
0x0
1: Conversion with opposite sign at input and output to can-
cel out the internal offset of the ADC and low-frequency
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Table 528: GP_ADC_CTRL_REG (0x50001900)
Bit
Mode Symbol
R/W GP_ADC_SEL
Description
Reset
0x0
12:8
ADC input selection.
If GP_ADC_SE = 1 (single ended mode):
0: P1[2]
1: P1[4]
2: P1[3]
3: P0[7]
4: AVS
5: Internal VDD_REF (used for offset calibration)
6: VDCDC (see
DCDC_TEST_0_REG.DCDC_OUTPUT_MONITOR for
more information; GP_ADC_ATTN3X scaler automatically
selected)
7: V33 (GP_ADC_ATTN3X scaler automatically selected)
8: V33 (GP_ADC_ATTN3X scaler automatically selected)
9: VBAT (5V to 1.2V scaler selected)
16: P0[6]
17: P1[0]
18: P1[5]
19: P2[4]
All other combinations are reserved.
If GP_ADC_SE = 0 (differential mode):
0: P1[2] vs P1[4]
All other combinations are P1[3] vs P0[7].
7
R/W
GP_ADC_MUTE
0: Normal operation
0x0
1: Mute ADC input. Takes sample at mid-scale (to derter-
mine the internal offset and/or noise of the ADC with regards
to VDD_REF which is also sampled by the ADC).
6
5
4
R/W
R/W
R
GP_ADC_SE
GP_ADC_MINT
GP_ADC_INT
0: Differential mode
1: Single ended mode
0x0
0x0
0x0
0: Disable (mask) GP_ADC_INT.
1: Enable GP_ADC_INT to ICU.
1: AD conversion ready and has generated an interrupt.
Must be cleared by writing any value to
GP_ADC_CLEAR_INT_REG.
3
2
R/W
R/W
GP_ADC_CLK_SEL
GP_ADC_CONT
0: Internal high-speed ADC clock used (recommended).
1: Digital clock used (ADC_CLK).
0x0
0x0
0: Manual ADC mode, a single result will be generated after
setting the GP_ADC_START bit.
1: Continuous ADC mode, new ADC results will be con-
stantly stored in GP_ADC_RESULT_REG. Still
GP_ADC_START has to be set to start the execution. The
time between conversions is configurable with
GP_ADC_INTERVAL.
1
0
R/W
R/W
GP_ADC_START
GP_ADC_EN
0: ADC conversion ready.
0x0
0x0
1: If a 1 is written, the ADC starts a conversion. After the con-
version this bit will be set to 0 and the GP_ADC_INT bit will
be set. It is not allowed to write this bit while it is not (yet)
zero.
0: LDO is off and ADC is disabled..
1: LDO is turned on and afterwards the ADC is enabled.
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Table 529: GP_ADC_CTRL2_REG (0x50001902)
Bit
Mode Symbol
Description
Reset
0x0
15:12
R/W
GP_ADC_STORE_D
EL
0: Data is stored after handshake synchronisation
1: Data is stored two ADC_CLK cycles after internal start
trigger
15: Data is stored sixteen ADC_CLK cycles after internal
start trigger
11:8
7:5
R/W
R/W
GP_ADC_SMPL_TIM 0: The sample time (switch is closed) is one ADC_CLK cycle 0x0
E
1: The sample time is 1*32 ADC_CLK cycles
2: The sample time is 2*32 ADC_CLK cycles
15: The sample time is 15*32 ADC_CLK cycles
GP_ADC_CONV_NR 0: 1 sample is taken or 2 in case ADC_CHOP is active.
0x0
S
1: 2 samples are taken.
2: 4 samples are taken.
7: 128 samples are taken.
4
3
-
-
Reserved
0x0
0x0
R/W
GP_ADC_DMA_EN
0: DMA functionality disabled
1: DMA functionality enabled
2
1
0
R/W
R/W
R/W
GP_ADC_I20U
GP_ADC_IDYN
GP_ADC_ATTN3X
1: Adds 20uA constant load current at the ADC LDO to mini- 0x0
mize ripple on the reference voltage of the ADC.
1: Enables dynamic load current at the ADC LDO to mini-
mize ripple on the reference voltage of the ADC.
0x0
0: Input voltages up to 1.2V allowed.
0x0
1: Input voltages up to 3.6V allowed by enabling 3x attenua-
tor. (if ADC_SEL=7 or 8, this bit is automatically set to 1)
Enabling the attenuator requires a longer sampling time.
Table 530: GP_ADC_CTRL3_REG (0x50001904)
Bit
Mode Symbol
Description
Reset
15:8
R/W
GP_ADC_INTERVAL
Defines the interval between two ADC conversions in case
GP_ADC_CONT is set.
0x0
0: No extra delay between two conversions.
1: 1.024ms interval between two conversions.
2: 2.048ms interval between two conversions.
255: 261.12ms interval between two conversions.
7:0
R/W
GP_ADC_EN_DEL
Defines the delay for enabling the ADC after enabling the
0x40
LDO.
0: Not allowed
1: 32x ADC_CLK period.
n: n*32x ADC_CLK period.
Table 531: GP_ADC_OFFP_REG (0x50001906)
Bit
Mode Symbol
Description
Reset
0x0
15:10
9:0
-
-
Reserved
R/W
GP_ADC_OFFP
Offset adjust of 'positive' array of ADC-network (effective if
"GP_ADC_SE=0", or "GP_ADC_SE=1 AND
GP_ADC_SIGN=0")
0x200
Table 532: GP_ADC_OFFN_REG (0x50001908)
Bit
Mode Symbol
Description
Reset
15:10
-
-
Reserved
0x0
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Table 532: GP_ADC_OFFN_REG (0x50001908)
Bit
Mode Symbol
R/W GP_ADC_OFFN
Description
Reset
9:0
Offset adjust of 'negative' array of ADC-network (effective if
"GP_ADC_SE=0", or "GP_ADC_SE=1 AND
GP_ADC_SIGN=1")
0x200
Table 533: GP_ADC_CLEAR_INT_REG (0x5000190A)
Bit
Mode Symbol
R0/W GP_ADC_CLR_INT
Description
Reset
15:0
Writing any value to this register will clear the ADC_INT
interrupt. Reading returns 0.
0x0
Table 534: GP_ADC_RESULT_REG (0x5000190C)
Bit
Mode Symbol
GP_ADC_VAL
Description
Reset
15:0
R
Returns the 10 up to 16 bits linear value of the last AD con-
version. The upper 10 bits are always valid, the lower 6 bits
are only valid in case oversampling has been applied. Two
samples results in one extra bit and 64 samples results in six
extra bits.
0x0
37.17 QUADRATURE DECODER REGISTER FILE
Table 535: Register map Quadrature Decoder
Address
Port
Description
0x50001A00
0x50001A02
0x50001A04
0x50001A06
0x50001A08
QDEC_CTRL_REG
QDEC_XCNT_REG
QDEC_YCNT_REG
QDEC_ZCNT_REG
QDEC_CLOCKDIV_REG
Quad decoder control register
Counter value of the X Axis
Counter value of the Y Axis
Counter value of the Z Axis
Quad decoder clock divider register
Table 536: QDEC_CTRL_REG (0x50001A00)
Bit
15:13
12
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
R/W
R/W
R/W
CHZ_PORT_EN
CHY_PORT_EN
CHX_PORT_EN
QD_IRQ_THRES
'1' : Enable channel
'1' : Enable channel
'1' : Enable channel
0x0
11
0x0
10
0x0
9:3
The number of events on either counter (X or Y or Z) that
need to be reached before an interrupt is generated. If 0 is
written, then threshold is considered to be 1.
0x2
2
1
R
QD_IRQ_STATUS
QD_IRQ_CLR
Interrupt Status. If 1 an interrupt has occured.
0x0
0x0
R/W
Writing 1 to this bit clears the interrupt. This bit is auto-
cleared
0
R/W
QD_IRQ_MASK
0: interrupt is masked
1: interrupt is enabled
0x0
Table 537: QDEC_XCNT_REG (0x50001A02)
Bit
Mode Symbol
X_COUNTER
Description
Reset
15:0
R
Contains a signed value of the events. Zero when channel is
disabled
0x0
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Table 538: QDEC_YCNT_REG (0x50001A04)
Bit
Mode Symbol
Y_COUNTER
Description
Reset
15:0
R
Contains a signed value of the events. Zero when channel is
disabled
0x0
Table 539: QDEC_ZCNT_REG (0x50001A06)
Bit
Mode Symbol
Z_COUNTER
Description
Reset
15:0
R
Contains a signed value of the events. Zero when channel is
disabled
0
Table 540: QDEC_CLOCKDIV_REG (0x50001A08)
Bit
Mode Symbol
R/W CLOCK_DIVIDER
Description
Reset
9:0
Contains the number of the input clock cycles minus one,
that are required to generate one logic clock cycle.
0x0
37.18 ANAMISC REGISTER FILE
Table 541: Register map ANAMISC
Address
Port
Description
0x50001B08
0x50001B0A
0x50001B0C
0x50001B40
0x50001B42
0x50001B44
0x50001B46
CHARGER_CTRL1_REG
CHARGER_CTRL2_REG
Charger control register 1
Charger control register 2
CHARGER_STATUS_REG
SOC_CTRL1_REG
Charger status and trimming register
Fuel Gauge Control register 1
Fuel Gauge Control register 2
Fuel Gauge Control register 3
SOC_CTRL2_REG
SOC_CTRL3_REG
SOC_ADD2CH_REG
Fuel Gauge manually add extra charge to
SOC_CHARGE_CNTRx_REG
0x50001B48
0x50001B4A
0x50001B4C
0x50001B50
0x50001B52
0x50001B54
0x50001B56
0x50001B60
0x50001B62
0x50001B64
0x50001B66
SOC_CHARGE_CNTR1_REG
SOC_CHARGE_CNTR2_REG
SOC_CHARGE_CNTR3_REG
SOC_CHARGE_AVG_REG
SOC_STATUS_REG
Fuel Gauge Charge counter bits 15-0
Fuel Gauge Charge counter bits 31-16
Fuel Gauge Charge counter bits 39-32
Fuel Gauge Average charge counter
Fuel Gauge Status register
SOC_EXT_IN_REG
Fuel Gauge input test register
SOC_EXT_OUT_REG
Fuel Gauge output test register
CLK_REF_SEL_REG
Select clock for oscillator calibration
Count value for oscillator calibration
DIVN reference cycles, lower 16 bits
DIVN reference cycles, upper 16 bits
CLK_REF_CNT_REG
CLK_REF_VAL_L_REG
CLK_REF_VAL_H_REG
Table 542: CHARGER_CTRL1_REG (0x50001B08)
Bit
15
14
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
DIE_TEMP_DISABL
E
0: Die temperature protection enabled: charger will be disa-
bled when die temp exceeds value set in DIE_TEMP_SET
1: Die temperature protection disabled: testmode, use only in
agreement with Dialog
0x0
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Table 542: CHARGER_CTRL1_REG (0x50001B08)
Bit
Mode Symbol
R/W DIE_TEMP_SET
Description
Reset
0x2
13:12
Die temperature protection level.
Charging will be automatically disabled if set level is
exceeded and resumed when temperature has dropped few
degrees below set level.
o
00: 0 C (do not use, for test only)
o
01: 50 C (do not use, for test only)
o
10: 80 C (default)
o
11: 100 C
11:8
R/W
CHARGE_CUR
Constant Current levels (typical values)
0000: 5 mA
0x0
0001: 10 mA
0010: 30 mA
0011: 45 mA
0100: 60 mA
0101: 90 mA
0110: 120 mA
0111: 150 mA
1000: 180 mA
1001: 210 mA
1010: 270 mA
1011: 300 mA
1100: 350 mA
1101: 400 mA
7
R/W
NTC_LOW_DISABLE 0: Normal operation: voltage level higher than 7/8 VDD_USB
will disable the charger
0x0
1: NTC low temp limit disabled: use if trickle charging below
the minimum temperature is required
6
R/W
R/W
R/W
NTC_DISABLE
CHARGE_ON
0: Charger NTC protection enabled
1: Charger NTC protection disable
0x0
0x0
0x0
5
0: Charger in powerdown
1: Charger enabled
4:0
CHARGE_LEVEL
Constant Voltage Levels
00000: 3.00V (reset)
00001: 3.40V (e.g. 2xNiMH)
00010: 3.50V
00011: 3.60V (e.g. Li-phosphate)
00100: 3.74V
00101: 3.86V
00110: 4.00V
00111: 4.05V
01000: 4.10V
01001: 4.15V
01010: 4.20V (e.g. Li-Co, Li-Mn, NMC)
01011: 4.25V
01100: 4.30V
01101: 4.35V
01110: 4.40V
01111: 4.50V
10000: 4.60V
10001: 4.90V e.g. 3xNiMH
10010: 5.00V
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Table 543: CHARGER_CTRL2_REG (0x50001B0A)
Bit
Mode Symbol
Description
Reset
15:13
R/W
CHARGER_TEST
Signals are mapped on SPDIF pin.
Also set ANA_TEST_REG[ANA_TESTBUS_TO_ADCPIN] =
1
0x0
000: normal mode (no test selected)
001: Vptat (temperature sensor) [1.4V max]
010: Vbat_sense after divider [1.2V]
011: Current loop output [0 to vsupply]
100: Voltage loop output [0 to vsupply]
101: Imeas or Iref/10
110: Icharge reduced by 26.6
111: reserved
12:8
7:4
R/W
R/W
R/W
CURRENT_OFFSET
_TRIM
do not change, for test purpose only
0xF
0x0
0x7
CHARGER_VFLOAT
_ADJ
Independent adjustment for the charge level. Adjust range is
+/- 1.8%. The 4 bits adjustment is in two's complement.
3:0
CURRENT_GAIN_T
RIM
do not change, for test purpose only
Table 544: CHARGER_STATUS_REG (0x50001B0C)
Bit
15:8
6
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CHARGER_TMODE
_PROT
0: Dietemp below DIE_TEMP_SET level. Normal operation
1: Dietemp above DIE_TEMP_SET level. Charging is disa-
bled
0x0
5
4
3
2
R
R
R
R
CHARGER_BATTEM 0: Battery pack temperature 'ok' or 'too low' (voltage level on
0x0
0x0
0x0
0x0
P_HIGH
NTC pin above 1/2 VDD_USB)
1: Battery pack temperature 'too high' (voltage level on NTC
pin below 1/2 VDD_USB)
CHARGER_BATTEM 0: Battery pack temperature 'too low' or 'too high' (voltage
P_OK
level on NTC pin below 1/2 or above 7/8 VDD_USB)
1: Battery pack temperature 'ok' (voltage level on NTC pin
between 1/2 and 7/8 VDD_USB)
CHARGER_BATTEM 0: Battery pack temperature 'ok' or 'too high' (voltage level on
P_LOW
NTC pin below 7/8 VDD_USB)
1: Battery pack temperature 'too low' (voltage level on NTC
pin above than 7/8 VDD_USB)
END_OF_CHARGE
0: Actual charge current is between 10...100% of set
CHARGE_CUR (or CHARGE_ON=0)
1: Actual charge current <10% of set CHARGE_CUR
1
0
R
R
CHARGER_CV_MO
DE
0: voltage loop not in regulation (or charger is off)
1: constant voltage mode active, voltage loop in regulation.
0x0
0x0
CHARGER_CC_MO
DE
0: current loop not in regulation (or charger is off)
1: constant current mode active, current loop in regulation.
Table 545: SOC_CTRL1_REG (0x50001B40)
Bit
Mode Symbol
R/W SOC_CINT
Description
Reset
15:14
Integrator capacitor scaler
0: Cint = 1 pF
0x3
1: Cint = 2 pF
2: Cint = 4 pF
3: Cint = 8 pF (=default)
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Table 545: SOC_CTRL1_REG (0x50001B40)
Bit
Mode Symbol
Description
Reset
13:12
R/W
SOC_BIAS
Current DAC scaler
0: Ibias = 2 uA
0x1
1: Ibias = 1 uA (=default)
2: Ibias = 0.5 uA
3: Ibias = 0.25 uA
11:9
R/W
SOC_CLK
SOC Sample frequency
0: automatic mode
1: fs = 18 kHz
0x4
2: fs = 36 kHz
3: fs = 72 kHz
4: fs = 144 kHz (=default)
5: fs = 288 kHz
6: fs = 576 kHz
7: fs = 1152 kHz
8
R/W
R/W
SOC_LPF
0: low-pass filter at integrator inputs disabled
1: Enables a low-pass filter at the integrator inputs
0x0
0x2
7:6
SOC_IDAC
Scales the current DAC (Ibias: default=1uA)
0: Idac=0.25*Ibias
1: Idac=0.5*Ibias
2: Idac=Ibias (=default)
3: Idac=2*Ibias
5
R/W
SOC_SIGN
Defines the sign of the charge converter input and output to
perform a chopper function to eliminate offset voltage (see
also SOC_CHOP and 'sign' on output pin)
0: non-inverted inputs and outputs
0x0
1: inverted inputs and outputs
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
SOC_GPIO
Reserved (not yet implemented): switches the SOC-inputs to
the GPIO pins
0x0
0x0
0x0
0x0
0x0
SOC_MUTE
0: Normal operation
1: Connect the input voltage to 0V
SOC_RESET_AVG
1: Reset the SOC_CHARGE_AVG_REG to the last value of
SOC_CHARGE_CNTRx_REG
SOC_RESET_CHAR
GE
1: Reset CHARGE_CNTR_REG
SOC_ENABLE
0: SOC analog circuits off. CHARGE_CNTRx_REG can still
be written for a manual update.
See SOC_ADD2CH_REG
1: SOC analog circuits enabled
Table 546: SOC_CTRL2_REG (0x50001B42)
Bit
Mode Symbol
Description
Reset
15
R/W
R/W
SOC_DYNAVG
if HIGH then 'weight' of Moving Average is forced to 1 if the
converter detects significant input change
(if dcharge > 4*delta_c, or high_limit, or low_limit)
0x0
14:12
11
SOC_MAW
Moving Average Weight factor
charge_avg(n) =
(weight*charge_avg(n-1) + charge(n) ) / (weight+1)
where:weight = 2^(soc_maw)
0x7
0x0
R/W
SOC_CMIREG_ENA
BLE
SOC_CMIREG enable
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Table 546: SOC_CTRL2_REG (0x50001B42)
Bit
Mode Symbol
Description
Reset
10:8
R/W
SOC_CHOP
Chopping control
0x7
0: 'external' chopping control with 'soc_sign'-input
1: chop each 2^1*scycle fs-periods
2: chop each 2^2*scycle fs-periods
..
7: chop each 2^7*scycle fs-periods.
7:6
R/W
SOC_ICM
adds a common-mode current to Idac to increase the com-
mon-mode input-level of the integrator.
The common-mode input level is equal to (Idac+Icm)*Rvi;
0: Icm=0;
0x1
1: Icm=1*Ibias (=default);
2: Icm=2*Ibias;
3: Icm=4*Ibias
5
R/W
R/W
SOC_DCYCLE
SOC_SCYCLE
Cycle the current divider segments of Idac
0: no cycling
1: cycle each scycle fs-periods
0x1
0x2
4:2
Cycle current segments (8 segments) of Idac
0: no cycling
1: cycle each fs-period
2: cycle each 2 fs-periods
..
7: cycle each 7 fs-periods
1:0
R/W
SOC_RVI
Voltage-to-current resistor scaler
0: Rvi = 25 k
0x2
1: Rvi = 50 k
2: Rvi = 100 k (= default)
3: Rvi = 200 k
Table 547: SOC_CTRL3_REG (0x50001B44)
Bit
Mode Symbol
Description
Reset
0x0
15:6
5:4
-
-
Reserved
R/W
SOC_VCMI
Common Input Voltage target of regulator (see
0x1
SOC_CMIREG_ENABLE)
0: 50 mV
1: 100 mV
2: 150 mV
3: 200 mV
3
R/W
R/W
R/W
SOC_DYNHYS
SOC_DYNTARG
SOC_VSAT
Reserved. (To be implemented)
Hysteresis of the comparator which detects if the integrator
voltage is rising or falling
0x0
0x0
0x1
2
Reserved. (To be implemented)
0: Vint_target = 0V
1: Vint_target tracks the 2 MSB's of the charge register)
1:0
Trigger level of the high-limit and low-limit comparators.
0: low_limit = -50mV; high_limit = +50mV
1: low_limit = -100mV; high_limit = +100mV (=default)
2: low_limit = -200mV; high_limit = +200mV
3: low_limit = -400mV; high_limit = +400mV
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Table 548: SOC_ADD2CH_REG (0x50001B46)
Bit
Mode Symbol
R/W SOC_ADD2CH
Description
Reset
15:0
Extra charge to be added to the
0x0
SOC_CHARGE_CNTRx_REG per sample period (9-bit +
sign + 6 fractional bits
Table 549: SOC_CHARGE_CNTR1_REG (0x50001B48)
Bit
Mode Symbol
CHARGE_CNT1
Description
Reset
15:0
R
Sum of the charge-values per sampling period; (bits15:0)
The absolute full-scale charge value is 6-bits, At full scale
charge current it takes 2^26 sampling periods until overflow
of the charge_cnt register after a reset_charge event.
At fs=144kHz (=default) this will happen after 33 hours
At fs=1.152MHz After 10 hours
0x0
Table 550: SOC_CHARGE_CNTR2_REG (0x50001B4A)
Bit
Mode Symbol
CHARGE_CNT2
Description
Reset
15:0
R
Sum of the charge-values per sampling period; (bits23:16)
0x0
Table 551: SOC_CHARGE_CNTR3_REG (0x50001B4C)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R
CHARGE_CNT3
Sum of the charge-values per sampling period; (bits39:24)
0x0
Table 552: SOC_CHARGE_AVG_REG (0x50001B50)
Bit
Mode Symbol
CHARGE_AVG
Description
Reset
15:0
R
Average of 'charge' current (9-bit + sign and 6 fractional bits
0x0
Table 553: SOC_STATUS_REG (0x50001B52)
Bit
15:2
1
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
SOC_INT_LOCKED
0: Normal Operation
0x0
1: Integrator is pushed over high or low limit.
Returns to '0' if the converter runs for more than 2 sequential
sampling periods in a 'safe' region (dcharge < 2*delta_c)
0
R
SOC_INT_OVERLO
AD
0: Normal Operation
1: Integrator exceeds high or low limit with full-scale IDAC
(charge) for more than 3 sequential sampling periods
0x0
Table 554: SOC_EXT_IN_REG (0x50001B54)
Bit
15
14
Mode Symbol
Description
Reset
0x0
R/W
R/W
SOC_EXT_IDAC_EN 1: Enable 'external' control of Idac
SOC_EXT_SCYCLE
_EN
1: Enable 'external' control of scycle
Number of the scycle
0x0
13:11
R/W
SOC_NR_SCYCLE
0x0
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Table 554: SOC_EXT_IN_REG (0x50001B54)
Bit
Mode Symbol
Description
Reset
10
R/W
SOC_RDAC_DIS
0: Disables the resistor divider DAC. The Idac has 6-bits
0x0
(plus sign)
1: Enables the resistor divider DAC. The Idac has 9-bits
(plus sign)
9
R/W
R/W
SOC_IDAC_SIGN
SOC_IDAC_VAL
0: SOC_IDAC_VAL is positive
1: SOC_IDAC_VAL is negative
0x0
0x0
8:0
Controls the current for the DAC.
0: 0/512*SOC_IDAC
N: N/512*SOC_IDAC
Table 555: SOC_EXT_OUT_REG (0x50001B56)
Bit
15:9
8
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
R
R
SOC_CTRL_EVENT
SOC_STATE
Controller event
Controller state
Rising comparator output
0x0
7:4
3
0x0
SOC_RISING_COM
P
0x0
2
1
R
R
SOC_POS_COMP
Positive comparator output
0x0
0x0
SOC_LOWLIM_COM Low_limit comparator output
P
0
R
SOC_HIGH_LIM
High_limit comparator output
0x0
Table 556: CLK_REF_SEL_REG (0x50001B60)
Bit
15:3
2
Mode Symbol
Description
Reset
-
-
Reserved
0x0
R/W
REF_CAL_START
Writing a '1' starts a calibration. This bit is cleared when cali- 0x0
bration is finished, and CLK_REF_VAL is ready.
1:0
R/W
REF_CLK_SEL
Select clock input for calibration:
0x0 : 32KHz RC oscillator clock
0x1 : 16MHz RC oscillator clock
0x2 : 32KHz XTAL clock
0x0
0x3 : 11.7KHz RCX oscillator clock
Table 557: CLK_REF_CNT_REG (0x50001B62)
Bit
Mode Symbol
R/W REF_CNT_VAL
Description
Reset
15:0
Indicates the calibration time, with a decrement counter to 1.
0x0
Table 558: CLK_REF_VAL_L_REG (0x50001B64)
Bit
Mode Symbol
XTAL_CNT_VAL
Description
Reset
15:0
R
Returns the lower 16 bits of DIVN clock cycles counted dur-
ing the calibration time, defined with REF_CNT_VAL
0x0
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Table 559: CLK_REF_VAL_H_REG (0x50001B66)
Bit
Mode Symbol
XTAL_CNT_VAL
Description
Reset
15:0
R
Returns the upper 16 bits of DIVN clock cycles counted dur-
ing the calibration time, defined with REF_CNT_VAL
0x0
37.19 CRG REGISTER FILE
Table 560: Register map CRG
Address
Port
Description
0x50001C04
0x50001C40
0x50001C42
0x50001C44
0x50001C46
0x50001C4A
CLK_PER_REG
PCM_DIV_REG
PCM_FDIV_REG
PDM_DIV_REG
SRC_DIV_REG
USBPAD_REG
Peripheral divider register
PCM divider and enables
PCM fractional division register
PDM divider and enables
SRC divider and enables
USB pads control register
Table 561: CLK_PER_REG (0x50001C04)
Bit
Mode Symbol
Description
Reset
11
R/W
R/W
R/W
R/W
ADC_CLK_SEL
Selects the clock source
1 = DIV1 clock
0 = DIVN clock
0x0
10
9
KBSCAN_CLK_SEL
I2C_CLK_SEL
Selects the clock source
1 = DIV1 clock
0 = DIVN clock
0x0
0x0
0x0
Selects the clock source
1 = DIV1 clock
0 = DIVN clock
8
SPI_CLK_SEL
Selects the clock source
1 = DIV1 clock
0 = DIVN clock
7:6
5
-
-
Reserved
0x0
0x0
0x0
0x0
0x0
0x0
0x0
R/W
R/W
R/W
R/W
R/W
R/W
KBSCAN_ENABLE
IR_CLK_ENABLE
QUAD_ENABLE
I2C_ENABLE
SPI_ENABLE
UART_ENABLE
Enables the clock
Enables the clock
Enables the clock
Enables the clock
Enables the clock
Enables the clock
4
3
2
1
0
Table 562: PCM_DIV_REG (0x50001C40)
Bit
Mode Symbol
Description
Reset
13
R/W
R/W
R/W
PCM_SRC_SEL
Selects the clock source
1 = DIV1 clock
0 = DIVN clock
0x0
12
CLK_PCM_EN
PCM_DIV
Enable for the internally generated PCM clock
The PCM_DIV must be set before or together with
CLK_PCM_EN.
0x0
0x0
11:0
PCM clock divider
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Table 563: PCM_FDIV_REG (0x50001C42)
Bit
Mode Symbol
R/W PCM_FDIV
Description
Reset
15:0
These bits define the fractional division part of the PCM
clock. The left most '1' defines the denominator, the number
of '1' bits define the numerator. E.g.
0x0
0x0110 means 2/9, with a distribution of 1.0001.0000
0xfeee means 13/16, with a distribution of
1111.1110.1110.1110
Table 564: PDM_DIV_REG (0x50001C44)
Bit
Mode Symbol
Description
Reset
9
R/W
R/W
R/W
PDM_MASTER_MO
DE
Master mode selection
0: slave mode
1: master mode
0x0
8
CLK_PDM_EN
Enable for the internally generated PDM clock
The PDM_DIV must be set before or together with
CLK_PDM_EN.
0x0
0x0
7:0
PDM_DIV
PDM clock divider
Table 565: SRC_DIV_REG (0x50001C46)
Bit
Mode Symbol
Description
Reset
8
R/W
R/W
CLK_SRC_EN
Enable for the internally generated SRC clock
The SRC_DIV must be set before or together with
CLK_SRC_EN.
0x0
7:0
SRC_DIV
SRC clock divider
0x0
Table 566: USBPAD_REG (0x50001C4A)
Bit
Mode Symbol
Description
Reset
2
R/W
R/W
R/W
USBPHY_FORCE_S
W2_ON
0: Pull up resistor SW2 is controlled by the USB controller. It
is off when the USB is not enabled.
1: Force the pull up resistor on USBP to be 2.3Kohm
0x0
1
0
USBPHY_FORCE_S
W1_OFF
0: Pull up resistor SW1 is controlled by the USB controller. It
is off when the USB is not enabled.
1: Force the pull up resistor on USBP to be switched off.
0x0
0x0
USBPAD_EN
0: The power for the USB PHY and USB pads is switched on
when the USB is enabled.
1: The power for the USB PHY and USB pads is forced on.
37.20 COEX REGISTER FILE
Table 567: Register map COEX
Address
Port
Description
0x50002F00
0x50002F02
0x50002F04
0x50002F06
0x50002F08
0x50002F0C
COEX_CTRL_REG
COEX_STAT_REG
COEX_INT_MASK_REG
COEX_INT_STAT_REG
COEX_BLE_PTI_REG
COEX_DIAG_REG
COEX Control Register
COEX Status Register
COEX Interrupt Mask Register
COEX Interrupt Status Register
COEX BLE PTI Control Register
COEX Diagnostic Monitor Register
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Table 567: Register map COEX
Address
Port
Description
0x50002F12
0x50002F14
0x50002F16
0x50002F18
0x50002F1A
0x50002F1C
0x50002F1E
0x50002F20
0x50002F22
0x50002F24
0x50002F26
0x50002F28
0x50002F2A
0x50002F2C
0x50002F2E
0x50002F30
0x50002F32
COEX_PRI1_REG
COEX_PRI2_REG
COEX_PRI3_REG
COEX_PRI4_REG
COEX_PRI5_REG
COEX_PRI6_REG
COEX_PRI7_REG
COEX_PRI8_REG
COEX_PRI9_REG
COEX_PRI10_REG
COEX_PRI11_REG
COEX_PRI12_REG
COEX_PRI13_REG
COEX_PRI14_REG
COEX_PRI15_REG
COEX_PRI16_REG
COEX_PRI17_REG
COEX Priority Register
COEX Priority Register
COEX Priority Register
COEX Priority Register
COEX Priority Register
COEX Priority Register
COEX Priority Register
COEX Priority Register
COEX Priority Register
COEX Priority Register
COEX Priority Register
COEX Priority Register
COEX Priority Register
COEX Priority Register
COEX Priority Register
COEX Priority Register
COEX Priority Register
Table 568: COEX_CTRL_REG (0x50002F00)
Bit
Mode Symbol
Description
Reset
15
R/W
IGNORE_BLE
If set to "1" then all BLE requests are ignored by masking the
internal "ble_active" signal. Refer also to
IGNORE_BLE_STAT.
0x0
14
13
-
-
Reserved
0x0
0x0
R/W
IGNORE_EXT
If set to "1" then all EXT requests are ignored by masking the
internal "ext_act" signal ("ext_act" is the logical OR of
"ext_act0" and "ext_act1"). Refer also to
IGNORE_EXT_STAT.
12:11
R/W
SEL_BLE_RADIO_B
USY
Select the logic driving the BLE core input "ble.radio_busy":
0: (decision==BLE) AND rfcu.radio_busy.
1: Hold to "0".
0x0
2: (decision==EXT) OR rfcu.radio_busy.
3: (decision==EXT).
Selection "0" is the default, while selection "2" is the recom-
mended value if the BLE SW supports it.
10
R/W
SEL_BLE_WLAN_TX If set to "1" then the COEX block will drive the WLAN_TX
0x0
_RX
and WLAN_RX inputs of the BLE core. Otherwise both BLE
inputs will be forced to "0".
9
8
7
-
-
-
-
-
-
Reserved
Reserved
Reserved
0x0
0x0
0x0
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Table 568: COEX_CTRL_REG (0x50002F00)
Bit
Mode Symbol
R/W SEL_COEX_DIAG
Description
Reset
0x0
6:5
The COEX block can provide internal diagnostic signals by
overwriting the BLE diagnostic bus, which is forwarded to
GPIO multiplexing. There is no need to program the BLE
registers, but only this field and the GPIO PID fields. The
encoding of this bitfield is:
0: Don't overwrite any BLE diagnostic signal.
1: Overwrite the BLE Diagnostic bits 2 down to 0:
P2[2]: "closing" sub-state
P2[1:0]:"decision" state
2: Overwrite the BLE Diagnostic bits 5 down to 3:
P1[2]: "closing" sub-state
P1[1:0]:"decision" state
3: Reserved..
4
R/W
SMART_ACT_IMPL
Controls the behavior of the SMART_ACT (and SMART_PRI
as a consequence).
0x0
If SMART_ACT_IMPL="0" then if any BLE MAC request is
active then SMART_ACT will be asserted. SMART_ACT will
actually be the "ble_active" signal. SMART_ACT will be
asserted regardless the decision of the Arbiter to allow or
disallow the access to the on-chip radio from the active
MAC(s).
if SMART_ACT_IMPL="1" then if the Arbiter's decision is to
allow EXTernal MAC, then keep SMART_ACT to "0", other-
wise follow the implementation of SMART_ACT_IMPL="0".
3
-
-
Reserved
Reserved
0x0
0x0
0x0
2:1
0
-
-
R/W
PRGING_ARBITER
If set to "1" then the current BLE transaction will complete
normally and after that no further decision will be taken by
the arbiter. The SW must keep this bit to "1" as long as it per-
forms write operations on the COEX_PRI*_REG registers.
As soon as the update on the priority registers will be com-
pleted, the SW should clear this bit.
Note: This bit is updated with the COEX_CLK, so depending
on the relationship between the PCLK and COEX_CLK peri-
ods a write operation to this bit may be effective in more than
one PCLK clock cycles, e.g. when the COEX_CLK rate is
slower than the PCLK.
Table 569: COEX_STAT_REG (0x50002F02)
Bit
Mode Symbol
Description
Reset
15
R
IGNORE_BLE_STAT
If set to "1" then all BLE requests are ignored by masking
immediately the request signal from the BLE.
0x0
In more detail, the internal signal "ble_active" is the logical
AND of this bitfield and the "ble.event_in_process".
14
13
-
-
Reserved
0x0
0x0
R
IGNORE_EXT_STAT
If set to "1" then all EXT requests are ignored by masking
immediately the request signal from the external MAC.
In more detail, the internal signal "ext_active" is the logical
AND of this bitfield and the "ext_act".
12
11
R
R
COEX_RADIO_BUS
Y
Current state of RADIO_BUSY signal generated from RFCU,
which is the logical OR among all Radio DCFs.
Note that the arbiter will process this value with one COEX
clock cycle delay.
0x0
EXT_ACT1
Current state of the pin.
0x0
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Table 569: COEX_STAT_REG (0x50002F02)
Bit
10
9
Mode Symbol
Description
Reset
R
R
R
R
EXT_ACT0
Current state of the pin.
0x0
0x0
0x0
0x0
SMART_PRI
SMART_ACT
Current state of the pin.
8
Current state of the pin.
7
COEX_DECISION_C
LOSING
Provides the value of the "CLOSING" substate.
6:5
R
COEX_DECISION
Decision values:
0x0
0: Decision is NONE.
1: Decision is BLE.
2: Reserved
3: Decision is EXT.
Note: If "0" (i.e. decision is NONE) then no MAC will have
access to the on-chip radio. As a consequence, the
SMART_PRI signal will stay low, since no on-chip (SMART)
MAC will have priority.
Note: The decision NONE will be held as long as there is no
"*_active" internal signal from BLE or EXT. Also, if in pro-
gramming state and the last transaction has been finished,
then the decision will also be NONE.
Note: While in programming mode, the COEX_PRIx_REGs
are considered as invalid, which means that no new decision
can be taken.
4:0
R
COEX_DECISION_P
TR
Provides the number "x" of the COEX_PRIx_REG that win
the last arbitration cycle. If "0" then it is a null pointer, point-
ing to no COEX_PRIx_REG.
0x0
Table 570: COEX_INT_MASK_REG (0x50002F04)
Bit
Mode Symbol
COEX_IRQ_ON_DE
CISION_SW
Description
Reset
15
R/W
R/W
R/W
R/W
R/W
R/W
R/W
If "1" then a "1" on
COEX_INT_STAT_REG[COEX_IRQ_ON_DECISION_SW]
will cause COEX_IRQ_STAT to be set also to "1".
0x0
14
13
12
11
10
9
COEX_IRQ_ON_STA If "1" then a "1" on
RT_MID
0x0
0x0
0x0
0x0
0x0
0x0
COEX_INT_STAT_REG[COEX_IRQ_ON_START_MID] will
cause COEX_IRQ_STAT to be set also to "1".
COEX_IRQ_ON_CL
OSING_BRK
If "1" then a "1" on
COEX_INT_STAT_REG[COEX_IRQ_ON_CLOSING_BRK]
will cause COEX_IRQ_STAT to be set also to "1".
COEX_IRQ_ON_RA
DIO_BUSY_F
If "1" then a "1" on
COEX_INT_STAT_REG[COEX_IRQ_ON_RADIO_BUSY_F]
will cause COEX_IRQ_STAT to be set also to "1".
COEX_IRQ_ON_RA
DIO_BUSY_R
If "1" then a "1" on
COEX_INT_STAT_REG[COEX_IRQ_ON_RADIO_BUSY_R
] will cause COEX_IRQ_STAT to be set also to "1".
COEX_IRQ_ON_BLE If "1" then a "1" on
_ACTIVE_F COEX_INT_STAT_REG[COEX_IRQ_ON_BLE_ACTIVE_F]
will cause COEX_IRQ_STAT to be set also to "1".
COEX_IRQ_ON_BLE If "1" then a "1" on
_ACTIVE_R
COEX_INT_STAT_REG[COEX_IRQ_ON_BLE_ACTIVE_R]
will cause COEX_IRQ_STAT to be set also to "1".
8
7
-
-
-
-
Reserved
Reserved
0x0
0x0
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Table 570: COEX_INT_MASK_REG (0x50002F04)
Bit
Mode Symbol
COEX_IRQ_ON_EX
Description
Reset
6
R/W
R/W
R/W
R/W
R/W
R/W
R/W
If "1" then a "1" on
0x0
0x0
0x0
0x0
0x0
0x0
0x0
T_ACT_F
COEX_INT_STAT_REG[COEX_IRQ_ON_EXT_ACT_F] will
cause COEX_IRQ_STAT to be set also to "1".
5
4
3
2
1
0
COEX_IRQ_ON_EX
T_ACT_R
If "1" then a "1" on
COEX_INT_STAT_REG[COEX_IRQ_ON_EXT_ACT_R] will
cause COEX_IRQ_STAT to be set also to "1".
COEX_IRQ_ON_SM
ART_PRI_F
If "1" then a "1" on
COEX_INT_STAT_REG[COEX_IRQ_ON_SMART_PRI_F]
will cause COEX_IRQ_STAT to be set also to "1".
COEX_IRQ_ON_SM
ART_PRI_R
If "1" then a "1" on
COEX_INT_STAT_REG[COEX_IRQ_ON_SMART_PRI_R]
will cause COEX_IRQ_STAT to be set also to "1".
COEX_IRQ_ON_SM
ART_ACT_F
If "1" then a "1" on
COEX_INT_STAT_REG[COEX_IRQ_ON_SMART_ACT_F]
will cause COEX_IRQ_STAT to be set also to "1".
COEX_IRQ_ON_SM
ART_ACT_R
If "1" then a "1" on
COEX_INT_STAT_REG[COEX_IRQ_ON_SMART_ACT_R]
will cause COEX_IRQ_STAT to be set also to "1".
COEX_IRQ_MASK
If set to "1" then sent an COEX_IRQ event to CPU as long
as COEX_INT_STAT_REG[COEX_IRQ_STAT] is "1".
If cleared then don't sent any IRQ event to CPU.
Table 571: COEX_INT_STAT_REG (0x50002F06)
Bit
Mode Symbol
Description
Reset
15
RC
COEX_IRQ_ON_DE
CISION_SW
IRQ event when the decision switches to a new MAC. It
ignores the intermediate transitions to DECISION==NONE.
Note that after a Radio domain reset, the first transition of
the decision to any MAC will also trigger this event.
0x0
14
13
RC
RC
COEX_IRQ_ON_STA IRQ event when the decision switches to a MAC, while the
0x0
0x0
RT_MID
TX_EN or RX_EN of this MAC are high. This event signals a
potential break of a transmission or reception.
COEX_IRQ_ON_CL
OSING_BRK
IRQ if while entering into "closing" sub-state, the TX_EN or
RX_EN are active. This event signals a potential break of a
transmission or reception.
12
11
10
9
RC
RC
RC
RC
COEX_IRQ_ON_RA
DIO_BUSY_F
IRQ event on falling edge of RADIO_BUSY.
0x0
0x0
0x0
0x0
COEX_IRQ_ON_RA
DIO_BUSY_R
IRQ event on rising edge of RADIO_BUSY.
COEX_IRQ_ON_BLE IRQ event on falling edge of BLE_ACTIVE internal signal.
_ACTIVE_F
COEX_IRQ_ON_BLE IRQ event on rising edge of BLE_ACTIVE internal signal.
_ACTIVE_R
8
7
6
-
-
-
Reserved
0x0
0x0
0x0
-
Reserved
RC
COEX_IRQ_ON_EX
T_ACT_F
RQ event on falling edge of EXT_ACT.
5
4
RC
RC
COEX_IRQ_ON_EX
T_ACT_R
IRQ event on rising edge of EXT_ACT.
IRQ event on falling edge of SMART_PRI.
0x0
0x0
COEX_IRQ_ON_SM
ART_PRI_F
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Table 571: COEX_INT_STAT_REG (0x50002F06)
Bit
Mode Symbol
Description
Reset
3
RC
RC
RC
RC
COEX_IRQ_ON_SM
ART_PRI_R
IRQ event on rising edge of SMART_PRI.
0x0
0x0
0x0
0x0
2
1
0
COEX_IRQ_ON_SM
ART_ACT_F
IRQ event on falling edge of SMART_ACT.
IRQ event on rising edge of SMART_ACT.
COEX_IRQ_ON_SM
ART_ACT_R
COEX_IRQ_STAT
For each COEX_IRQ_ON_* bitfield of
COEX_INT_STAT_REG the corresponding mask is applied
and afterwards all the intermediate results are combined with
a logical OR in order to produce the COEX_IRQ_STAT bit-
field. If furthermore the
COEX_INT_MASK_REG[COEX_IRQ_MASK] is set to "1",
then a COEX_IRQ signal will be forwarded to the CPU.
Note: Each COEX_IRQ_ON_* bitfield of
COEX_INT_STAT_REG will be set to "1" on the detection of
the corresponding event and will be cleared to "0" on the
read of COEX_INT_STAT_REG. The automated clear may
delay a couple of PCLK cycles, depending on the relation-
ship between PCLK and COEX_CLK.
Table 572: COEX_BLE_PTI_REG (0x50002F08)
Bit
Mode Symbol
Description
Reset
0x0
15:3
2:0
-
-
Reserved
R/W
COEX_BLE_PTI
This value specifies the PTI value that characterizes the next
BLE transaction that will be initiated on the following
"ble_active" positive edge. The value should remain con-
stant during the high period of the "ble_active" signal.
0x0
Table 573: COEX_DIAG_REG (0x50002F0C)
Bit
Mode Symbol
RC COEX_DIAG_MON
Description
Reset
15:0
provides the current value of the diagnostic bus forwarded to
the GPIO multiplexing (named PPA). Refer to the
Pxy_MODE_REG[PID] value BLE_DIAG.
0x0
Table 574: COEX_PRI1_REG (0x50002F12)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:3
-
-
Reserved
R/W
COEX_PRI_MAC
Specifies the MAC that has been assigned with the specific
priority level. The MAC encoding follows the
COEX_DECISION bitfield encoding.
0x3
2:0
R/W
COEX_PRI_PTI
The priority level specified by this register will be applied to
the packets coming from the MAC specified by the
COEX_PRI_MAC bitfield and characterized with the PTI
value specified by the COEX_PRI_PTI bitfield.
0x0
Table 575: COEX_PRI2_REG (0x50002F14)
Bit
Mode Symbol
Description
Reset
15:5
-
-
Reserved
0x0
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Table 575: COEX_PRI2_REG (0x50002F14)
Bit
4:3
2:0
Mode Symbol
Description
Reset
R/W
R/W
COEX_PRI_MAC
COEX_PRI_PTI
Refer to COEX_PRI1_REG.
Refer to COEX_PRI1_REG.
0x1
0x0
Table 576: COEX_PRI3_REG (0x50002F16)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:3
2:0
-
-
Reserved
R/W
R/W
COEX_PRI_MAC
COEX_PRI_PTI
Refer to COEX_PRI1_REG.
Refer to COEX_PRI1_REG.
0x2
0x0
Table 577: COEX_PRI4_REG (0x50002F18)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:3
2:0
-
-
Reserved
R/W
R/W
COEX_PRI_MAC
COEX_PRI_PTI
Refer to COEX_PRI1_REG.
Refer to COEX_PRI1_REG.
0x0
0x0
Table 578: COEX_PRI5_REG (0x50002F1A)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:3
2:0
-
-
Reserved
R/W
R/W
COEX_PRI_MAC
COEX_PRI_PTI
Refer to COEX_PRI1_REG.
Refer to COEX_PRI1_REG.
0x0
0x0
Table 579: COEX_PRI6_REG (0x50002F1C)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:3
2:0
-
-
Reserved
R/W
R/W
COEX_PRI_MAC
COEX_PRI_PTI
Refer to COEX_PRI1_REG.
Refer to COEX_PRI1_REG.
0x0
0x0
Table 580: COEX_PRI7_REG (0x50002F1E)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:3
2:0
-
-
Reserved
R/W
R/W
COEX_PRI_MAC
COEX_PRI_PTI
Refer to COEX_PRI1_REG.
Refer to COEX_PRI1_REG.
0x0
0x0
Table 581: COEX_PRI8_REG (0x50002F20)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:3
2:0
-
-
Reserved
R/W
R/W
COEX_PRI_MAC
COEX_PRI_PTI
Refer to COEX_PRI1_REG.
Refer to COEX_PRI1_REG.
0x0
0x0
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Table 582: COEX_PRI9_REG (0x50002F22)
Bit
Mode Symbol
Description
Reset
15:5
4:3
2:0
-
-
Reserved
0x0
0x0
0x0
R/W
R/W
COEX_PRI_MAC
COEX_PRI_PTI
Refer to COEX_PRI1_REG.
Refer to COEX_PRI1_REG.
Table 583: COEX_PRI10_REG (0x50002F24)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:3
2:0
-
-
Reserved
R/W
R/W
COEX_PRI_MAC
COEX_PRI_PTI
Refer to COEX_PRI1_REG.
Refer to COEX_PRI1_REG.
0x0
0x0
Table 584: COEX_PRI11_REG (0x50002F26)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:3
2:0
-
-
Reserved
R/W
R/W
COEX_PRI_MAC
COEX_PRI_PTI
Refer to COEX_PRI1_REG.
Refer to COEX_PRI1_REG.
0x0
0x0
Table 585: COEX_PRI12_REG (0x50002F28)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:3
2:0
-
-
Reserved
R/W
R/W
COEX_PRI_MAC
COEX_PRI_PTI
Refer to COEX_PRI1_REG.
Refer to COEX_PRI1_REG.
0x0
0x0
Table 586: COEX_PRI13_REG (0x50002F2A)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:3
2:0
-
-
Reserved
R/W
R/W
COEX_PRI_MAC
COEX_PRI_PTI
Refer to COEX_PRI1_REG.
Refer to COEX_PRI1_REG.
0x0
0x0
Table 587: COEX_PRI14_REG (0x50002F2C)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:3
2:0
-
-
Reserved
R/W
R/W
COEX_PRI_MAC
COEX_PRI_PTI
Refer to COEX_PRI1_REG.
Refer to COEX_PRI1_REG.
0x0
0x0
Table 588: COEX_PRI15_REG (0x50002F2E)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:3
2:0
-
-
Reserved
R/W
R/W
COEX_PRI_MAC
COEX_PRI_PTI
Refer to COEX_PRI1_REG.
Refer to COEX_PRI1_REG.
0x0
0x0
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Table 589: COEX_PRI16_REG (0x50002F30)
Bit
Mode Symbol
Description
Reset
15:5
4:3
2:0
-
-
Reserved
0x0
0x0
0x0
R/W
R/W
COEX_PRI_MAC
COEX_PRI_PTI
Refer to COEX_PRI1_REG.
Refer to COEX_PRI1_REG.
Table 590: COEX_PRI17_REG (0x50002F32)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:3
2:0
-
-
Reserved
R/W
R/W
COEX_PRI_MAC
COEX_PRI_PTI
Refer to COEX_PRI1_REG.
Refer to COEX_PRI1_REG.
0x0
0x0
37.21 GPIO REGISTER FILE
Table 591: Register map GPIO
Address
Port
Description
0x50003000
0x50003002
0x50003004
0x50003006
0x50003008
0x5000300A
0x5000300C
0x5000300E
0x50003010
0x50003012
0x50003014
0x50003016
0x50003018
0x5000301A
0x5000301C
0x5000301E
0x50003020
0x50003022
0x50003024
0x50003026
0x50003028
0x5000302A
0x5000302C
0x5000302E
0x50003030
0x50003032
0x50003034
0x50003036
0x50003038
0x5000303A
P0_DATA_REG
P0 Data input / output Register
P1 Data input / output Register
P2 Data input / output Register
P3 Data input / output Register
P4 Data input / output Register
P0 Set port pins Register
P1 Set port pins Register
P2 Set port pins Register
P3 Set port pins Register
P4 Set port pins Register
P0 Reset port pins Register
P1 Reset port pins Register
P2 Reset port pins Register
P3 Reset port pins Register
P4 Reset port pins Register
P00 Mode Register
P1_DATA_REG
P2_DATA_REG
P3_DATA_REG
P4_DATA_REG
P0_SET_DATA_REG
P1_SET_DATA_REG
P2_SET_DATA_REG
P3_SET_DATA_REG
P4_SET_DATA_REG
P0_RESET_DATA_REG
P1_RESET_DATA_REG
P2_RESET_DATA_REG
P3_RESET_DATA_REG
P4_RESET_DATA_REG
P00_MODE_REG
P01_MODE_REG
P02_MODE_REG
P03_MODE_REG
P04_MODE_REG
P05_MODE_REG
P06_MODE_REG
P07_MODE_REG
P10_MODE_REG
P11_MODE_REG
P12_MODE_REG
P13_MODE_REG
P14_MODE_REG
P15_MODE_REG
P16_MODE_REG
P01 Mode Register
P02 Mode Register
P03 Mode Register
P04 Mode Register
P05 Mode Register
P06 Mode Register
P07 Mode Register
P10 Mode Register
P11 Mode Register
P12 Mode Register
P13 Mode Register
P14 Mode Register
P15 Mode Register
P24 Mode Register
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Bluetooth Low Energy 4.2 SoC
Table 591: Register map GPIO
Address
Port
Description
0x5000303C
0x5000303E
0x50003040
0x50003042
0x50003044
0x50003046
0x5000304E
0x50003050
0x50003052
0x50003054
0x50003056
0x50003058
0x5000305A
0x5000305C
0x5000305E
0x50003060
0x50003062
0x50003064
0x50003066
0x50003068
0x5000306A
0x5000306C
0x500030C0
0x500030C2
0x500030C4
0x500030C6
0x500030C8
0x500030D0
P17_MODE_REG
P20_MODE_REG
P21_MODE_REG
P22_MODE_REG
P23_MODE_REG
P24_MODE_REG
P30_MODE_REG
P31_MODE_REG
P32_MODE_REG
P33_MODE_REG
P34_MODE_REG
P35_MODE_REG
P36_MODE_REG
P37_MODE_REG
P40_MODE_REG
P41_MODE_REG
P42_MODE_REG
P43_MODE_REG
P44_MODE_REG
P45_MODE_REG
P46_MODE_REG
P47_MODE_REG
P0_PADPWR_CTRL_REG
P1_PADPWR_CTRL_REG
P2_PADPWR_CTRL_REG
P3_PADPWR_CTRL_REG
P4_PADPWR_CTRL_REG
GPIO_CLK_SEL
P25 Mode Register
P20 Mode Register
P21 Mode Register
P22 Mode Register
P23 Mode Register
P24 Mode Register
P30 Mode Register
P31 Mode Register
P32 Mode Register
P33 Mode Register
P34 Mode Register
P35 Mode Register
P36 Mode Register
P37 Mode Register
P40 Mode Register
P41 Mode Register
P42 Mode Register
P43 Mode Register
P44 Mode Register
P45 Mode Register
P46 Mode Register
P47 Mode Register
P0 Output Power Control Register
P1 Output Power Control Register
P2 Output Power Control Register
P3 Output Power Control Register
P4 Output Power Control Register
Select which clock to map on port in PPA
Table 592: P0_DATA_REG (0x50003000)
Bit
Mode Symbol
Description
Reset
15:8
7:0
-
-
Reserved
0x0
0x0
R/W
P0_DATA
Set P0 output register when written; Returns the value of P0
port when read
Table 593: P1_DATA_REG (0x50003002)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R/W
P1_DATA
Set P1 output register when written; Returns the value of P1
port when read
0x0
Table 594: P2_DATA_REG (0x50003004)
Bit
Mode Symbol
Description
Reset
15:5
-
-
Reserved
0x0
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Table 594: P2_DATA_REG (0x50003004)
Bit
Mode Symbol
R/W P2_DATA
Description
Reset
4:0
Set P2 output register when written; Returns the value of P2
port when read
0x0
Table 595: P3_DATA_REG (0x50003006)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R/W
P3_DATA
Set P3 output register when written; Returns the value of P3
port when read
0x0
Table 596: P4_DATA_REG (0x50003008)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R/W
P4_DATA
Set P4 output register when written; Returns the value of P4
port when read
0x0
Table 597: P0_SET_DATA_REG (0x5000300A)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R/W
P0_SET
Writing a 1 to P0[y] sets P0[y] to 1. Writing 0 is discarded;
Reading returns 0
0x0
Table 598: P1_SET_DATA_REG (0x5000300C)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R/W
P1_SET
Writing a 1 to P1[y] sets P1[y] to 1. Writing 0 is discarded;
Reading returns 0
0x0
Table 599: P2_SET_DATA_REG (0x5000300E)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:0
-
-
Reserved
R/W
P2_SET
Writing a 1 to P2[y] sets P2[y] to 1. Writing 0 is discarded;
Reading returns 0
0x0
Table 600: P3_SET_DATA_REG (0x50003010)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R0/W
P3_SET
Writing a 1 to P3[y] sets P3[y] to 1. Writing 0 is discarded;
Reading returns 0
0x0
Table 601: P4_SET_DATA_REG (0x50003012)
Bit
Mode Symbol
Description
Reset
15:8
-
-
Reserved
0x0
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Table 601: P4_SET_DATA_REG (0x50003012)
Bit
Mode Symbol
R0/W P4_SET
Description
Reset
7:0
Writing a 1 to P4[y] sets P4[y] to 1. Writing 0 is discarded;
Reading returns 0
0x0
Table 602: P0_RESET_DATA_REG (0x50003014)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R/W
P0_RESET
Writing a 1 to P0[y] sets P0[y] to 0. Writing 0 is discarded;
Reading returns 0
0x0
Table 603: P1_RESET_DATA_REG (0x50003016)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R/W
P1_RESET
Writing a 1 to P1[y] sets P1[y] to 0. Writing 0 is discarded;
Reading returns 0
0x0
Table 604: P2_RESET_DATA_REG (0x50003018)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:0
-
-
Reserved
R/W
P2_RESET
Writing a 1 to P2[y] sets P2[y] to 0. Writing 0 is discarded;
Reading returns 0
0x0
Table 605: P3_RESET_DATA_REG (0x5000301A)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R0/W
P3_RESET
Writing a 1 to P3[y] sets P3[y] to 0. Writing 0 is discarded;
Reading returns 0
0x0
Table 606: P4_RESET_DATA_REG (0x5000301C)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R0/W
P4_RESET
Writing a 1 to P4[y] sets P4[y] to 0. Writing 0 is discarded;
Reading returns 0
0x0
Table 607: P00_MODE_REG (0x5000301E)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
-
-
Reserved
0x0
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Table 607: P00_MODE_REG (0x5000301E)
Bit
Mode Symbol
R/W PID
Description
Reset
5:0
Function of port:
0x0
0: GPIO, PUPD (see above)
1: UART_RX
2: UART_TX
3: UART_IRDA_RX
4: UART_IRDA_TX
5: UART2_RX
6: UART2_TX
7: UART2_IRDA_RX
8: UART2_IRDA_TX
9: UART2_CTSN
10: UART2_RTSN
11: SPI_DI
12: SPI_DO
13: SPI_CLK
14: SPI_EN
15: SPI2_DI
16: SPI2_DO
17: SPI2_CLK
18: SPI2_EN
19: I2C_SCL
20: I2C_SDA
21: I2C2_SCL
22: I2C2_SDA
23: PWM0
24: PWM1
25: PWM2
26: PWM3
27: PWM4
28: BLE_DIAG (ble_diag_0: P2_0, ble_diag_1: P2_1,
ble_diag_2: P2_2, ble_diag_3: P1_0, ble_diag_4: P1_1,
ble_diag_5: P1_2, ble_diag_6: P1_3, ble_diag_7: P2_3)
29: Reserved
30: PCM_DI
31: PCM_DO
32: PCM_FSC
33: PCM_CLK
34: PDM_DI
35: PDM_DO
36: PDM_CLK
37: USB_SOF
38: ADC (only for P0[7:6], P1[5:2,0] and P2[4])
38: USB (only for P2[2] and P1[1])
38: XTAL32 (only for P2[1:0])
39: QD_CHA_X
40: QD_CHB_X
41: QD_CHA_Y
42: QD_CHB_Y
43: QD_CHA_Z
44: QD_CHB_Z
45: IR_OUT
46: BREATH
47: KB_ROW
48: COEX_EXT_ACT0
49: COEX_EXT_ACT1
50: COEX_SMART_ACT
(continued on next page)
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Table 607: P00_MODE_REG (0x5000301E)
Bit
Mode Symbol
R/W PID
Description
Reset
0x0
5:0
51: COEX_SMART_PRI
52: CLOCK
(continued)
53: ONESHOT
54: PWM5
55: PORT0_DCF
56: PORT1_DCF
57: PORT2_DCF
58: PORT3_DCF
59: PORT4_DCF
60: RF_ANT_TRIM[0]
61: RF_ANT_TRIM[1]
62: RF_ANT_TRIM[2]
(Note 20)
Note 20: Note: when a certain input function (like SPI_DI) is selected on more than 1 port pin, the port with the lowest index has the highest priority
and P0 has higher priority than P1.
Table 608: P01_MODE_REG (0x50003020)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 609: P02_MODE_REG (0x50003022)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 610: P03_MODE_REG (0x50003024)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
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Table 610: P03_MODE_REG (0x50003024)
Bit
Mode Symbol
Description
Reset
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 611: P04_MODE_REG (0x50003026)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 612: P05_MODE_REG (0x50003028)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x1
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 613: P06_MODE_REG (0x5000302A)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
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Table 614: P07_MODE_REG (0x5000302C)
Bit
Mode Symbol
Description
Reset
15:11
10
-
-
Reserved
0x0
0x0
R/W
PPOD
0: Push pull
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 615: P10_MODE_REG (0x5000302E)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 616: P11_MODE_REG (0x50003030)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 617: P12_MODE_REG (0x50003032)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
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Table 617: P12_MODE_REG (0x50003032)
Bit
7:6
5:0
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 618: P13_MODE_REG (0x50003034)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 619: P14_MODE_REG (0x50003036)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 620: P15_MODE_REG (0x50003038)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x1
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 621: P16_MODE_REG (0x5000303A)
Bit
Mode Symbol
Description
Reset
15:11
-
-
Reserved
0x0
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Table 621: P16_MODE_REG (0x5000303A)
Bit
Mode Symbol
Description
Reset
10
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x1
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 622: P17_MODE_REG (0x5000303C)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 623: P20_MODE_REG (0x5000303E)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 624: P21_MODE_REG (0x50003040)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
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Table 625: P22_MODE_REG (0x50003042)
Bit
Mode Symbol
Description
Reset
15:11
10
-
-
Reserved
0x0
0x0
R/W
PPOD
0: Push pull
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 626: P23_MODE_REG (0x50003044)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 627: P24_MODE_REG (0x50003046)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 628: P30_MODE_REG (0x5000304E)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
Datasheet
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Table 628: P30_MODE_REG (0x5000304E)
Bit
7:6
5:0
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 629: P31_MODE_REG (0x50003050)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 630: P32_MODE_REG (0x50003052)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 631: P33_MODE_REG (0x50003054)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 632: P34_MODE_REG (0x50003056)
Bit
Mode Symbol
Description
Reset
15:11
-
-
Reserved
0x0
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Table 632: P34_MODE_REG (0x50003056)
Bit
Mode Symbol
Description
Reset
10
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 633: P35_MODE_REG (0x50003058)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 634: P36_MODE_REG (0x5000305A)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 635: P37_MODE_REG (0x5000305C)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
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Table 636: P40_MODE_REG (0x5000305E)
Bit
Mode Symbol
Description
Reset
15:11
10
-
-
Reserved
0x0
0x0
R/W
PPOD
0: Push pull
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 637: P41_MODE_REG (0x50003060)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 638: P42_MODE_REG (0x50003062)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 639: P43_MODE_REG (0x50003064)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
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Table 639: P43_MODE_REG (0x50003064)
Bit
7:6
5:0
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 640: P44_MODE_REG (0x50003066)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 641: P45_MODE_REG (0x50003068)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 642: P46_MODE_REG (0x5000306A)
Bit
Mode Symbol
Description
Reset
0x0
15:11
10
-
-
Reserved
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 643: P47_MODE_REG (0x5000306C)
Bit
Mode Symbol
Description
Reset
15:11
-
-
Reserved
0x0
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Table 643: P47_MODE_REG (0x5000306C)
Bit
Mode Symbol
Description
Reset
10
R/W
PPOD
0: Push pull
0x0
1: Open drain
9:8
R/W
PUPD
00 = Input, no resistors selected
01 = Input, pull-up selected
0x2
10 = Input, pull-down selected
11 = Output, no resistors selected
In ADC mode, these bits are don't care
7:6
5:0
-
-
Reserved
0x0
0x0
R/W
PID
See P00_MODE_REG[PID]
Table 644: P0_PADPWR_CTRL_REG (0x500030C0)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:6
-
-
Reserved
R/W
P0_OUT_CTRL
1 = P0_x port output is powered by VDD1V8P rail
0 = P0_x port output is powered by V33 rail
bit 6 controls the power supply of P0[6],
bit 7 controls the power supply of P0[7]
0x0
5:0
-
-
Reserved
0x0
Table 645: P1_PADPWR_CTRL_REG (0x500030C2)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R/W
P1_OUT_CTRL
1 = P1_x port output is powered by VDD1V8P rail
0 = P1_x port output is powered by V33 rail
bit x controls the power supply of P1[x]
0x0
Table 646: P2_PADPWR_CTRL_REG (0x500030C4)
Bit
Mode Symbol
Description
Reset
0x0
15:5
4:0
-
-
Reserved
R/W
P2_OUT_CTRL
1 = P2_x port output is powered by VDD1V8P rail
0 = P2_x port output is powered by V33 rail
bit x controls the power supply of P2[x]
0x0
Table 647: P3_PADPWR_CTRL_REG (0x500030C6)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R/W
P3_OUT_CTRL
1 = P3_x port output is powered by VDD1V8P rail
0 = P3_x port output is powered by V33 rail
bit x controls the power supply of P3[x]
0x0
Table 648: P4_PADPWR_CTRL_REG (0x500030C8)
Bit
Mode Symbol
Description
Reset
0x0
15:8
7:0
-
-
Reserved
R/W
P4_OUT_CTRL
1 = P4_x port output is powered by VDD1V8P rail
0 = P4_x port output is powered by V33 rail
bit x controls the power supply of P4[x]
0x0
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Table 649: GPIO_CLK_SEL (0x500030D0)
Bit
Mode Symbol
Description
Reset
15:3
2:0
-
-
Reserved
0x0
0x0
R/W
FUNC_CLOCK_SEL
Select which clock to map when PID = FUNC_CLOCK.
0x0: XTAL32K
0x1: RC32K
0x2: RCX32K
0x3: XTAL16M
0x4: RC16M
0x5: DIVN
0x6: Reserved
0x7: Reserved
37.22 WDOG REGISTER FILE
Table 650: Register map WDOG
Address
Port
Description
0x50003100
0x50003102
WATCHDOG_REG
WATCHDOG_CTRL_REG
Watchdog timer register.
Watchdog control register.
Table 651: WATCHDOG_REG (0x50003100)
Bit
Mode Symbol
Description
Reset
15:9
R0/W
WDOG_WEN
0000.000 = Write enable for Watchdog timer
else Write disable. This filter prevents unintentional preset-
ting the watchdog with a SW run-away.
0x0
8
R/W
R/W
WDOG_VAL_NEG
WDOG_VAL
0 = Watchdog timer value is positive.
1 = Watchdog timer value is negative.
0x0
7:0
Write: Watchdog timer reload value. Note that all bits 15-9
must be 0 to reload this register.
0xFF
Read: Actual Watchdog timer value. Decremented by 1
every 10.24 msec. Bit 8 indicates a negative counter value.
2, 1, 0, 1FF , 1FE etc. An NMI or WDOG (SYS) reset is
16
16
generated under the following conditions:
If WATCHDOG_CTRL_REG[NMI_RST] = 0 then
If WDOG_VAL = 0 -> NMI (Non Maskable Interrupt)
if WDOG_VAL = 1F0 -> WDOG reset -> reload FF
16
16
If WATCHDOG_CTRL_REG[NMI_RST] = 1 then
if WDOG_VAL <= 0 -> WDOG reset -> reload FF
16
Table 652: WATCHDOG_CTRL_REG (0x50003102)
Bit
15:2
1
Mode Symbol
Description
Reserved
Reserved
Reset
0x0
-
-
-
-
0x0
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Table 652: WATCHDOG_CTRL_REG (0x50003102)
Bit
Mode Symbol
R/W NMI_RST
Description
Reset
0
0 = Watchdog timer generates NMI at value 0, and WDOG
(SYS) reset at <=-16. Timer can be frozen /resumed using
SET_FREEZE_REG[FRZ_WDOG]/
0x0
RESET_FREEZE_REG[FRZ_WDOG].
1 = Watchdog timer generates a WDOG (SYS) reset at value
0 and can not be frozen by Software.
Note that this bit can only be set to 1 by SW and only be
reset with a WDOG (SYS) reset or SW reset.
The watchdog is always frozen when the Cortex-M0 is halted
in DEBUG State.
37.23 VERSION REGISTER FILE
Table 653: Register map Version
Address
Port
Description
0x50003200
0x50003201
0x50003202
0x50003203
0x50003204
CHIP_ID1_REG
CHIP_ID2_REG
CHIP_ID3_REG
CHIP_SWC_REG
CHIP_REVISION_REG
Chip identification register 1.
Chip identification register 2.
Chip identification register 3.
Software compatibility register.
Chip revision register.
Table 654: CHIP_ID1_REG (0x50003200)
Bit
Mode Symbol
CHIP_ID1
Description
Reset
7:0
R
First character of device type "680" in ASCII.
0x36
Table 655: CHIP_ID2_REG (0x50003201)
Bit
Mode Symbol
CHIP_ID2
Description
Reset
7:0
R
Second character of device type "680" in ASCII.
0x38
Table 656: CHIP_ID3_REG (0x50003202)
Bit
Mode Symbol
CHIP_ID3
Description
Reset
7:0
R
Third character of device type "680" in ASCII.
0x30
Table 657: CHIP_SWC_REG (0x50003203)
Bit
7:4
3:0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
CHIP_SWC
SoftWare Compatibility code.
0x0
Integer (default = 0) which is incremented if a silicon change
has impact on the CPU Firmware.
Can be used by software developers to write silicon revision
dependent code.
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Table 658: CHIP_REVISION_REG (0x50003204)
Bit
Mode Symbol
REVISION_ID
Description
Reset
0x41
7:0
R
Chip version, corresponds with type number in ASCII.
0x41 = 'A', 0x42 = 'B'
37.24 GPREG REGISTER FILE
Table 659: Register map GPREG
Address
Port
Description
0x50003300
SET_FREEZE_REG
Controls freezing of various timers/counters (incl.
DMA and USB).
0x50003302
RESET_FREEZE_REG
Controls unfreezing of various timers/counters (incl.
DMA and USB).
0x50003304
0x50003306
0x50003308
0x5000330A
0x5000330C
0x50003310
0x50003312
0x50003314
0x50003316
DEBUG_REG
Various debug information register.
General purpose system status register.
General purpose system control register.
Base address of the ECC Crypto memory register.
Controls muxing and enabling of the LEDs.
System PLL control register 1.
GP_STATUS_REG
GP_CONTROL_REG
ECC_BASE_ADDR_REG
LED_CONTROL_REG
PLL_SYS_CTRL1_REG
PLL_SYS_CTRL2_REG
PLL_SYS_CTRL3_REG
PLL_SYS_STATUS_REG
System PLL control register 2.
System PLL control register 3.
System PLL status register.
Table 660: SET_FREEZE_REG (0x50003300)
Bit
15:8
7
Mode Symbol
Description
Reset
-
-
Reserved
0x0
R/W
R/W
R/W
R/W
R/W
FRZ_SWTIM2
FRZ_SWTIM1
FRZ_DMA
FRZ_USB
FRZ_WDOG
If '1', the SW Timer (TIMER2) is frozen, '0' is discarded.
If '1', the SW Timer (TIMER1) is frozen, '0' is discarded.
If '1', the DMA is frozen, '0' is discarded.
0x0
0x0
0x0
0x0
0x0
6
5
4
If '1', the USB is frozen, '0' is discarded.
3
If '1', the watchdog timer is frozen, '0' is discarded.
WATCHDOG_CTRL_REG[NMI_RST] must be '0' to allow
the freeze function.
2
1
0
R/W
R/W
R/W
FRZ_BLETIM
FRZ_SWTIM0
FRZ_WKUPTIM
If '1', the BLE master clock is frozen, '0' is discarded.
If '1', the SW Timer (TIMER0) is frozen, '0' is discarded.
If '1', the Wake Up Timer is frozen, '0' is discarded.
0x0
0x0
0x0
Table 661: RESET_FREEZE_REG (0x50003302)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
0x0
0x0
0x0
0x0
0x0
0x0
0x0
-
-
Reserved
R/W
R/W
R/W
R/W
R/W
R/W
R/W
FRZ_SWTIM2
FRZ_SWTIM1
FRZ_DMA
FRZ_USB
If '1', the SW Timer (TIMER2) continues, '0' is discarded.
If '1', the SW Timer (TIMER1) continues, '0' is discarded.
If '1', the DMA continues, '0' is discarded.
If '1', the USB continues, '0' is discarded.
If '1', the watchdog timer continues, '0' is discarded.
If '1', the BLE master clock continues, '0' is discarded.
If '1', the SW Timer (TIMER0) continues, '0' is discarded.
6
5
4
3
FRZ_WDOG
FRZ_BLETIM
FRZ_SWTIM0
2
1
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Table 661: RESET_FREEZE_REG (0x50003302)
Bit
Mode Symbol
R/W FRZ_WKUPTIM
Description
Reset
0
If '1', the Wake Up Timer continues, '0' is discarded.
0x0
Table 662: DEBUG_REG (0x50003304)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
DEBUGS_FREEZE_
EN
Default '1', freezing of the on-chip timers is enabled when the
Cortex-M0 is halted in DEBUG State.
0x1
If '0', freezing of the on-chip timers is depending on
FREEZE_REG when the Cortex-M0 is halted in DEBUG
State except the watchdog timer. The watchdog timer is
always frozen when the Cortex-M0 is halted in DEBUG
State.
Note: This bit is retained.
Table 663: GP_STATUS_REG (0x50003306)
Bit
15:1
0
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
CAL_PHASE
If '1', it designates that the chip is in Calibration Phase i.e.
the OTP has been initially programmed but no Calibration
has occured.
0x0
Table 664: GP_CONTROL_REG (0x50003308)
Bit
Mode Symbol
Description
Reset
15:8
R
BLE_DEEPSLDUR_
MONITOR
The 8 LSBs of the current value of the BLE Timer DEEP-
SLDUR. The value has been sampled by using the CPU
clock.
0x0
7:3
2
-
-
Reserved
0x0
0x0
R
BLE_WAKEUP_LP_I
RQ
The current value of the BLE_WAKEUP_LP_IRQ interrupt
request.
1
R/W
R/W
BLE_H2H_BRIDGE_
BYPASS
If '1', the AHB-to-AHB bridge is bypassed, needed to access
the BLE Register file, only when the system clock source is
the XTAL and both hclk and ble_hclk are running at 16MHz,
i.e. at the XTAL clock rate.
0x0
0
BLE_WAKEUP_REQ
If '1', the BLE wakes up. Must be kept high at least for 1 low
power clock period.
0x0
If the BLE is in deep sleep state, then by setting this bit it will
cause the wakeup LP IRQ to be asserted with a delay of 3 to
4 low power cycles.
Table 665: ECC_BASE_ADDR_REG (0x5000330A)
Bit
15:8
7
Mode Symbol
Description
Reserved
Reserved
Reset
0x0
-
-
-
-
0x0
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Table 665: ECC_BASE_ADDR_REG (0x5000330A)
Bit
Mode Symbol
R/W ECC_BASE_ADDR
Description
Reset
6:0
Contains the base address of the ECC Crypto memory.
Memory allocation is in pages of 1KB and up to 127KB.
Since the ECC has an address range of 2KB and the total
addressable memory range is 128KB, the maximum value of
0x7F (127KB offset) will result in 1KB at the top of the mem-
ory range and the other 1KB at the bottom of the memory
range.
0x0
Table 666: LED_CONTROL_REG (0x5000330C)
Bit
15:6
5
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
LED3_EN
0: LED3 disabled,
1: LED3 enabled.
0x0
4
3
2
1
0
R/W
R/W
R/W
R/W
R/W
LED2_EN
0: LED2 disabled,
1: LED2 enabled.
0x0
0x0
0x0
0x0
0x0
LED1_EN
0: LED1 disabled,
1: LED1 enabled.
LED3_SRC_SEL
LED2_SRC_SEL
LED1_SRC_SEL
0: LED3 = PWM4,
1: LED3 = Breathing Timer.
0: LED2 = PWM3,
1: LED2 = Breathing Timer.
0: LED1 = PWM2,
1: LED1 = Breathing Timer.
Note: The PWM2/3/4 can also be routed to GPIOs using PID
25/26/27 respectively.
Table 667: PLL_SYS_CTRL1_REG (0x50003310)
Bit
Mode Symbol
Description
Reset
0x0
15
-
-
Reserved
14:8
R/W
PLL_R_DIV
PLL Output dvider R (x means divide by x, 0 means divide by
1)
0x1
7:3
2
-
-
Reserved
0x0
0x0
R/W
LDO_PLL_VREF_HO 0: indicates that the reference input is tracked,
LD
1: indicates that the reference input is sampled.
1
0
R/W
R/W
LDO_PLL_ENABLE
0: LDO PLL off,
1: LDO PLL on.
0x0
0x0
PLL_EN
0: Power down
1: PLL on
Table 668: PLL_SYS_CTRL2_REG (0x50003312)
Bit
15
14
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R/W
PLL_SEL_MIN_CUR
_INT
0: VCO current read from min_current <5:0>,
1: VCO current is internally determined with a calibration
algoritm.
0x0
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Bluetooth Low Energy 4.2 SoC
Table 668: PLL_SYS_CTRL2_REG (0x50003312)
Bit
Mode Symbol
Description
Reset
13:12
R/W
PLL_DEL_SEL
PLL manual delay value for Phase Frequency Detector.
0x2
0: 0.493
1: 0.814
2: 1.13 ns <- default
3: 1.44 ns
11:8
7
-
-
Reserved
Reserved
0x0
0x0
0x6
-
-
6:0
R/W
PLL_N_DIV
PLL Loop divider N (x means divide by x, 0 means divide by
1)
Table 669: PLL_SYS_CTRL3_REG (0x50003314)
Bit
Mode Symbol
Description
Reset
0x0
15
R/W
R/W
PLL_RECALIB
Recalibrate
14:10
PLL_START_DEL
Programmable delay time for the loop filter voltage preset
value. After PLL_EN is set, the loopfilter precharge resistors
are disabled after this delay time. One LSB is 48 ns
0xF
9:5
4:0
-
-
Reserved
0x0
0x9
R/W
PLL_ICP_SEL
PLL charge pump current select
One LSB is 5uA.
Table 670: PLL_SYS_STATUS_REG (0x50003316)
Bit
Mode Symbol
Description
Reset
0x0
15:12
11
-
-
Reserved
R
R
PLL_CALIBR_END
Indicates that calibration has finished.
0x0
10:5
PLL_PLL_BEST_MIN Calibrated VCO frequency band.
_CUR
0x0
4:2
1
-
-
Reserved
0x0
0x0
0x0
R
R
LDO_PLL_OK
1: Indicates that LDO PLL is in regulation.
1: PLL locked
0
PLL_LOCK_FINE
37.25 TIMER0/2 AND BREATH REGISTER FILE
Table 671: Register map Timer0/2 and Breath
Address
Port
Description
0x50003400
0x50003402
0x50003404
0x50003406
0x50003408
0x5000340A
0x5000340C
0x5000340E
0x50003410
0x50003412
0x50003414
0x50003416
TIMER0_CTRL_REG
TIMER0_ON_REG
Timer0 control register
Timer0 on control register
16 bits reload value for Timer0
16 bits reload value for Timer0
Defines start Cycle for PWM2
Defines start Cycle for PWM3
Defines start Cycle for PWM4
Defines end Cycle for PWM2
Defines end Cycle for PWM3
Defines end Cycle for PWM4
Defines the PMW2,3,4 frequency
PWM 2 3 4 Control register
TIMER0_RELOAD_M_REG
TIMER0_RELOAD_N_REG
PWM2_START_CYCLE
PWM3_START_CYCLE
PWM4_START_CYCLE
PWM2_END_CYCLE
PWM3_END_CYCLE
PWM4_END_CYCLE
TRIPLE_PWM_FREQUENCY
TRIPLE_PWM_CTRL_REG
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Table 671: Register map Timer0/2 and Breath
Address
Port
Description
0x50003418
0x5000341A
0x5000341C
0x5000341E
BREATH_CFG_REG
BREATH_DUTY_MAX_REG
BREATH_DUTY_MIN_REG
BREATH_CTRL_REG
Breath configuration register
Breath max duty cycle register
Breath min duty cycle register
Breath control register
Table 672: TIMER0_CTRL_REG (0x50003400)
Bit
15:4
3
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
R/W
PWM_MODE
0 = PWM signals are '1' during high time.
1 = PWM signals send out the (fast) clock divided by 2 dur-
ing high time.
2
R/W
TIM0_CLK_DIV
1 = Timer0 uses selected clock frequency as is.
0 = Timer0 uses selected clock frequency divided by 10.
Note that this applies only to the ON-counter.
0x0
1
0
R/W
R/W
TIM0_CLK_SEL
TIM0_CTRL
1 = Timer0 uses fast clock frequency.
0 = Timer0 uses 32 kHz (slow) clock frequency.
0x0
0x0
0 = Timer0 is off and in reset state.
1 = Timer0 is running.
Table 673: TIMER0_ON_REG (0x50003402)
Bit
Mode Symbol
R0/W TIM0_ON
Description
Reset
15:0
Timer0 On reload value:
0x0
If read the actual counter value ON_CNTer is returned
Table 674: TIMER0_RELOAD_M_REG (0x50003404)
Bit
Mode Symbol
R0/W TIM0_M
Description
Reset
15:0
Timer0 'high' reload valueIf read the actual counter value
T0_CNTer is returned
0x0
Table 675: TIMER0_RELOAD_N_REG (0x50003406)
Bit
Mode Symbol
R0/W TIM0_N
Description
Reset
15:0
Timer0 'low' reload value:
0x0
If read the actual counter value T0_CNTer is returned
Table 676: PWM2_START_CYCLE (0x50003408)
Bit
Mode Symbol
R/W START_CYCLE
Description
Reset
13:0
Define the cycle in which the PWM becomes high. if
start_cycle larger than freq or end and start are equal, pwm
out is always 0
0x0
Table 677: PWM3_START_CYCLE (0x5000340A)
Bit
Mode Symbol
R/W START_CYCLE
Description
Reset
13:0
Define the cycle in which the PWM becomes high. if
start_cycle larger than freq or end and start are equal, pwm
out is always 0
0x0
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Table 678: PWM4_START_CYCLE (0x5000340C)
Bit
Mode Symbol
R/W START_CYCLE
Description
Reset
13:0
Define the cycle in which the PWM becomes high. if
start_cycle larger than freq or end and start are equal, pwm
out is always 0
0x0
Table 679: PWM2_END_CYCLE (0x5000340E)
Bit
Mode Symbol
R/W END_CYCLE
Description
Reset
13:0
Define the cycle in which the PWM becomes low. If end
cycle larger then freq pwm and start cycle not larger then
freq pwm, output is always 1
0x0
Table 680: PWM3_END_CYCLE (0x50003410)
Bit
Mode Symbol
R/W END_CYCLE
Description
Reset
13:0
Define the cycle in which the PWM becomes low. If end
cycle larger then freq pwm and start cycle not larger then
freq pwm, output is always 1
0x0
Table 681: PWM4_END_CYCLE (0x50003412)
Bit
Mode Symbol
R/W END_CYCLE
Description
Reset
13:0
Define the cycle in which the PWM becomes low. If end
cycle larger then freq pwm and start cycle not larger then
freq pwm, output is always 1
0x0
Table 682: TRIPLE_PWM_FREQUENCY (0x50003414)
Bit
Mode Symbol
R/W FREQ
Description
Reset
13:0
Freq for PWM 2 3 4, period = timer_clk * ( FREQ+1)
0x0
Table 683: TRIPLE_PWM_CTRL_REG (0x50003416)
Bit
2
Mode Symbol
Description
Reset
0x1
R/W
R/W
R/W
HW_PAUSE_EN
'1' = HW can pause PWM 2,3,4
'1' = PWM 2 3 4 is paused
'1' = PWM 2 3 4 is enabled
1
SW_PAUSE_EN
0x0
0
TRIPLE_PWM_ENA
BLE
0x0
Table 684: BREATH_CFG_REG (0x50003418)
Bit
Mode Symbol
Description
Reset
15:8
R/W
BRTH_STEP
Defines the number of PWM periods minus 1, duty cycle will
be changed
0x1
7:0
R/W
BRTH_DIV
Defines the division factor of the system clock to get to the
PWM frequency.( = Sys Clock / (value+1)
0xFF
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Table 685: BREATH_DUTY_MAX_REG (0x5000341A)
Bit
Mode Symbol
R/W BRTH_DUTY_MAX
Description
Reset
7:0
Defines the maximum duty cycle of the PWM breath func-
tion. Duty cycle = value / (brth_div+1)
0xA
Table 686: BREATH_DUTY_MIN_REG (0x5000341C)
Bit
Mode Symbol
R/W BRTH_DUTY_MIN
Description
Reset
7:0
Defines the minimum duty cycle of the PWM breath function.
Duty cycle = value / (brth_div+1)
0x1
Table 687: BREATH_CTRL_REG (0x5000341E)
Bit
1
Mode Symbol
Description
Reset
0x0
R/W
R/W
BRTH_PWM_POL
BRTH_EN
Define the output polarity.
'1' enable the Breath operation
0
0x0
37.26 DMA REGISTER FILE
Table 688: Register map DMA
Address
Port
Description
0x50003500
0x50003502
0x50003504
0x50003506
0x50003508
0x5000350A
0x5000350C
0x5000350E
0x50003510
0x50003512
0x50003514
0x50003516
0x50003518
0x5000351A
0x5000351C
0x5000351E
0x50003520
0x50003522
0x50003524
0x50003526
0x50003528
0x5000352A
0x5000352C
0x5000352E
0x50003530
0x50003532
0x50003534
DMA0_A_STARTL_REG
DMA0_A_STARTH_REG
DMA0_B_STARTL_REG
DMA0_B_STARTH_REG
DMA0_INT_REG
Start address Low A of DMA channel 0
Start address High A of DMA channel 0
Start address Low B of DMA channel 0
Start address High B of DMA channel 0
DMA receive interrupt register channel 0
DMA receive length register channel 0
Control register for the DMA channel 0
Index value of DMA channel 0
DMA0_LEN_REG
DMA0_CTRL_REG
DMA0_IDX_REG
DMA1_A_STARTL_REG
DMA1_A_STARTH_REG
DMA1_B_STARTL_REG
DMA1_B_STARTH_REG
DMA1_INT_REG
Start address Low A of DMA channel 1
Start address High A of DMA channel 1
Start address Low B of DMA channel 1
Start address High B of DMA channel 1
DMA receive interrupt register channel 1
DMA receive length register channel 1
Control register for the DMA channel 1
Index value of DMA channel 1
DMA1_LEN_REG
DMA1_CTRL_REG
DMA1_IDX_REG
DMA2_A_STARTL_REG
DMA2_A_STARTH_REG
DMA2_B_STARTL_REG
DMA2_B_STARTH_REG
DMA2_INT_REG
Start address Low A of DMA channel 2
Start address High A of DMA channel 2
Start address Low B of DMA channel 2
Start address High B of DMA channel 2
DMA receive interrupt register channel 2
DMA receive length register channel 2
Control register for the DMA channel 2
Index value of DMA channel 2
DMA2_LEN_REG
DMA2_CTRL_REG
DMA2_IDX_REG
DMA3_A_STARTL_REG
DMA3_A_STARTH_REG
DMA3_B_STARTL_REG
Start address Low A of DMA channel 3
Start address High A of DMA channel 3
Start address Low B of DMA channel 3
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Table 688: Register map DMA
Address
Port
Description
0x50003536
0x50003538
0x5000353A
0x5000353C
0x5000353E
0x50003540
0x50003542
0x50003544
0x50003546
0x50003548
0x5000354A
0x5000354C
0x5000354E
0x50003550
0x50003552
0x50003554
0x50003556
0x50003558
0x5000355A
0x5000355C
0x5000355E
0x50003560
0x50003562
0x50003564
0x50003566
0x50003568
0x5000356A
0x5000356C
0x5000356E
0x50003570
0x50003572
0x50003574
0x50003576
0x50003578
0x5000357A
0x5000357C
0x5000357E
0x50003580
0x50003582
0x50003584
DMA3_B_STARTH_REG
DMA3_INT_REG
Start address High B of DMA channel 3
DMA receive interrupt register channel 3
DMA receive length register channel 3
Control register for the DMA channel 3
Index value of DMA channel 3
DMA3_LEN_REG
DMA3_CTRL_REG
DMA3_IDX_REG
DMA4_A_STARTL_REG
DMA4_A_STARTH_REG
DMA4_B_STARTL_REG
DMA4_B_STARTH_REG
DMA4_INT_REG
Start address Low A of DMA channel 4
Start address High A of DMA channel 4
Start address Low B of DMA channel 4
Start address High B of DMA channel 4
DMA receive interrupt register channel 4
DMA receive length register channel 4
Control register for the DMA channel 4
Index value of DMA channel 4
DMA4_LEN_REG
DMA4_CTRL_REG
DMA4_IDX_REG
DMA5_A_STARTL_REG
DMA5_A_STARTH_REG
DMA5_B_STARTL_REG
DMA5_B_STARTH_REG
DMA5_INT_REG
Start address Low A of DMA channel 5
Start address High A of DMA channel 5
Start address Low B of DMA channel 5
Start address High B of DMA channel 5
DMA receive interrupt register channel 5
DMA receive length register channel 5
Control register for the DMA channel 5
Index value of DMA channel 5
DMA5_LEN_REG
DMA5_CTRL_REG
DMA5_IDX_REG
DMA6_A_STARTL_REG
DMA6_A_STARTH_REG
DMA6_B_STARTL_REG
DMA6_B_STARTH_REG
DMA6_INT_REG
Start address Low A of DMA channel 6
Start address High A of DMA channel 6
Start address Low B of DMA channel 6
Start address High B of DMA channel 6
DMA receive interrupt register channel 6
DMA receive length register channel 6
Control register for the DMA channel 6
Index value of DMA channel 6
DMA6_LEN_REG
DMA6_CTRL_REG
DMA6_IDX_REG
DMA7_A_STARTL_REG
DMA7_A_STARTH_REG
DMA7_B_STARTL_REG
DMA7_B_STARTH_REG
DMA7_INT_REG
Start address Low A of DMA channel 7
Start address High A of DMA channel 7
Start address Low B of DMA channel 7
Start address High B of DMA channel 7
DMA receive interrupt register channel 7
DMA receive length register channel 7
Control register for the DMA channel 7
Index value of DMA channel 7
DMA7_LEN_REG
DMA7_CTRL_REG
DMA7_IDX_REG
DMA_REQ_MUX_REG
DMA_INT_STATUS_REG
DMA_CLEAR_INT_REG
DMA channel assignments
DMA interrupt status register
DMA clear interrupt register
Table 689: DMA0_A_STARTL_REG (0x50003500)
Bit
Mode Symbol
R/W DMA0_A_STARTL
Description
Reset
15:0
Source start address, lower 16 bits
0x0
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Table 690: DMA0_A_STARTH_REG (0x50003502)
Bit
Mode Symbol
R/W DMA0_A_STARTH
Description
Reset
15:0
Source start address, upper 16 bits
0x0
Table 691: DMA0_B_STARTL_REG (0x50003504)
Bit
Mode Symbol
R/W DMA0_B_STARTL
Description
Reset
15:0
Destination start address, lower 16 bits
0x0
Table 692: DMA0_B_STARTH_REG (0x50003506)
Bit
Mode Symbol
R/W DMA0_B_STARTH
Description
Reset
15:0
Destination start address, upper 16 bits
0x0
Table 693: DMA0_INT_REG (0x50003508)
Bit
Mode Symbol
R/W DMA0_INT
Description
Reset
15:0
Number of transfers until an interrupt is generated. The inter- 0x0
rupt is generated after a transfer, if DMAx_INT_REG is equal
to DMAx_IDX_REG and before DMAx_IDX_REG is incre-
mented. The bit-field IRQ_ENABLE of DMAx_CTRL_REG
must be set to '1' to let the controller generate the interrupt.
Table 694: DMA0_LEN_REG (0x5000350A)
Bit
Mode Symbol
R/W DMA0_LEN
Description
Reset
15:0
DMA channel's transfer length. DMAx_LEN of value 0, 1, 2,
... results into an actual transfer length of 1, 2, 3, ...
0x0
Table 695: DMA0_CTRL_REG (0x5000350C)
Bit
Mode Symbol
Description
Reset
0x0
15:13
12
-
-
Reserved
R/W
DMA_INIT
0 = DMA performs copy A1 to B1, A2 to B2, etc ...
1 = DMA performs copy of A1 to B1, B2, etc ...
0x0
This feature is useful for memory initialization to any value.
Thus, BINC must be set to '1', while AINC is don't care, as
only one fetch from A is done. This process cannot be inter-
rupted by other DMA channels. It is also noted that
DMA_INIT should not be used when DREQ_MODE='1'.
11
R/W
DMA_IDLE
0 = Blocking mode, the DMA performs a fast back-to-back
copy, disabling bus access for any bus master with lower pri-
ority.
0x0
1 = Interrupting mode, the DMA inserts a wait cycle after
each store allowing the CPU to steal cycles or cache to per-
form a burst read. If DREQ_MODE='1', DMA_IDLE is don't
care.
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Table 695: DMA0_CTRL_REG (0x5000350C)
Bit
Mode Symbol
R/W DMA_PRIO
Description
Reset
0x0
10:8
The priority level determines which DMA channel will be
granted access for transferring data, in case more than one
channels are active and request the bus at the same time.
The greater the value, the higher the priority. In specific:
000 = lowest priority
111 = highest priority
If different channels with equal priority level values request
the bus at the same time, an inherent priority mechanism is
applied. According to this mechanism, if, for example, both
the DMA0 and DMA1 channels have the same priority level,
then DMA0 will first be granted access to the bus.
7
R/W
CIRCULAR
0 = Normal mode. The DMA channel stops after having com- 0x0
pleted the transfer of length determined by
DMAx_LEN_REG. DMA_ON automatically deasserts when
the transfer is completed.
1 = Circular mode (applicable only if DREQ_MODE = '1'). In
this mode, DMA_ON never deasserts, as the DMA channel
automatically resets DMAx_IDX_REG and starts a new
transfer.
6
5
4
R/W
R/W
R/W
AINC
Enable increment of source address.
0 = do not increment (source address stays the same during
the transfer)
1 = increment according to the value of BW bit-field (by 1,
when BW="00" ; by 2, when BW="01" ; by 4, when BW="10")
0x0
0x0
0x0
BINC
Enable increment of destination address.
0 = do not increment (destination address stays the same
during the transfer)
1 = increment according to the value of BW bit-field (by 1,
when BW="00" ; by 2, when BW="01" ; by 4, when BW="10")
DREQ_MODE
0 = DMA channel starts immediately
1 = DMA channel must be triggered by peripheral DMA
request (see also the description of DMA_REQ_MUX_REG)
3
R/W
R/W
IRQ_ENABLE
BW
0 = disables interrupts on this channel
1 = enables interrupts on this channel
0x0
0x0
2:1
Bus transfer width:
00 = 1 Byte (suggested for peripherals like UART and 8-bit
SPI)
01 = 2 Bytes (suggested for peripherals like I2C and 16-bit
SPI)
10 = 4 Bytes (suggested for Memory-to-Memory transfers)
11 = Reserved
0
R/W
DMA_ON
0 = DMA channel is off, clocks are disabled
0x0
1 = DMA channel is enabled. This bit will be automatically
cleared after the completion of a transfer, if circular mode is
not enabled. In circular mode, this bit stays set.
Table 696: DMA0_IDX_REG (0x5000350E)
Bit
Mode Symbol
DMA0_IDX
Description
Reset
15:0
R
This (read-only) register determines the data items currently
fetched by the DMA channel, during an on-going transfer.
When the transfer is completed, the register is automatically
reset to 0.
0x0
The DMA channel uses this register to form the source/desti-
nation address of the next DMA cycle, considering also
AINC/BINC and BW.
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Table 697: DMA1_A_STARTL_REG (0x50003510)
Bit
Mode Symbol
R/W DMA1_A_STARTL
Description
Reset
15:0
Source start address, lower 16 bits
0x0
Table 698: DMA1_A_STARTH_REG (0x50003512)
Bit
Mode Symbol
R/W DMA1_A_STARTH
Description
Reset
15:0
Source start address, upper 16 bits
0x0
Table 699: DMA1_B_STARTL_REG (0x50003514)
Bit
Mode Symbol
R/W DMA1_B_STARTL
Description
Reset
15:0
Destination start address, lower 16 bits
0x0
Table 700: DMA1_B_STARTH_REG (0x50003516)
Bit
Mode Symbol
R/W DMA1_B_STARTH
Description
Reset
15:0
Destination start address, upper 16 bits
0x0
Table 701: DMA1_INT_REG (0x50003518)
Bit
Mode Symbol
R/W DMA1_INT
Description
Reset
15:0
Number of transfers until an interrupt is generated. The inter- 0x0
rupt is generated after a transfer, if DMAx_INT_REG is equal
to DMAx_IDX_REG and before DMAx_IDX_REG is incre-
mented. The bit-field IRQ_ENABLE of DMAx_CTRL_REG
must be set to '1' to let the controller generate the interrupt.
Table 702: DMA1_LEN_REG (0x5000351A)
Bit
Mode Symbol
R/W DMA1_LEN
Description
Reset
15:0
DMA channel's transfer length. DMAx_LEN of value 0, 1, 2,
... results into an actual transfer length of 1, 2, 3, ...
0x0
Table 703: DMA1_CTRL_REG (0x5000351C)
Bit
Mode Symbol
Description
Reset
0x0
15:13
12
-
-
Reserved
R/W
DMA_INIT
0 = DMA performs copy A1 to B1, A2 to B2, etc ...
1 = DMA performs copy of A1 to B1, B2, etc ...
0x0
This feature is useful for memory initialization to any value.
Thus, BINC must be set to '1', while AINC is don't care, as
only one fetch from A is done. This process cannot be inter-
rupted by other DMA channels. It is also noted that
DMA_INIT should not be used when DREQ_MODE='1'.
11
R/W
DMA_IDLE
0 = Blocking mode, the DMA performs a fast back-to-back
copy, disabling bus access for any bus master with lower pri-
ority.
0x0
1 = Interrupting mode, the DMA inserts a wait cycle after
each store allowing the CPU to steal cycles or cache to per-
form a burst read. If DREQ_MODE='1', DMA_IDLE is don't
care.
Datasheet
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Bluetooth Low Energy 4.2 SoC
Table 703: DMA1_CTRL_REG (0x5000351C)
Bit
Mode Symbol
R/W DMA_PRIO
Description
Reset
0x0
10:8
The priority level determines which DMA channel will be
granted access for transferring data, in case more than one
channels are active and request the bus at the same time.
The greater the value, the higher the priority. In specific:
000 = lowest priority
111 = highest priority
If different channels with equal priority level values request
the bus at the same time, an inherent priority mechanism is
applied. According to this mechanism, if, for example, both
the DMA0 and DMA1 channels have the same priority level,
then DMA0 will first be granted access to the bus.
7
R/W
CIRCULAR
0 = Normal mode. The DMA channel stops after having com- 0x0
pleted the transfer of length determined by
DMAx_LEN_REG. DMA_ON automatically deasserts when
the transfer is completed.
1 = Circular mode (applicable only if DREQ_MODE = '1'). In
this mode, DMA_ON never deasserts, as the DMA channel
automatically resets DMAx_IDX_REG and starts a new
transfer.
6
5
4
R/W
R/W
R/W
AINC
Enable increment of source address.
0 = do not increment (source address stays the same during
the transfer)
1 = increment according to the value of BW bit-field (by 1,
when BW="00" ; by 2, when BW="01" ; by 4, when BW="10")
0x0
0x0
0x0
BINC
Enable increment of destination address.
0 = do not increment (destination address stays the same
during the transfer)
1 = increment according to the value of BW bit-field (by 1,
when BW="00" ; by 2, when BW="01" ; by 4, when BW="10")
DREQ_MODE
0 = DMA channel starts immediately
1 = DMA channel must be triggered by peripheral DMA
request (see also the description of DMA_REQ_MUX_REG)
3
R/W
R/W
IRQ_ENABLE
BW
0 = disables interrupts on this channel
1 = enables interrupts on this channel
0x0
0x0
2:1
Bus transfer width:
00 = 1 Byte (suggested for peripherals like UART and 8-bit
SPI)
01 = 2 Bytes (suggested for peripherals like I2C and 16-bit
SPI)
10 = 4 Bytes (suggested for Memory-to-Memory transfers)
11 = Reserved
0
R/W
DMA_ON
0 = DMA channel is off, clocks are disabled
0x0
1 = DMA channel is enabled. This bit will be automatically
cleared after the completion of a transfer, if circular mode is
not enabled. In circular mode, this bit stays set.
Table 704: DMA1_IDX_REG (0x5000351E)
Bit
Mode Symbol
DMA1_IDX
Description
Reset
15:0
R
This (read-only) register determines the data items currently
fetched by the DMA channel, during an on-going transfer.
When the transfer is completed, the register is automatically
reset to 0.
0x0
The DMA channel uses this register to form the source/desti-
nation address of the next DMA cycle, considering also
AINC/BINC and BW.
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Table 705: DMA2_A_STARTL_REG (0x50003520)
Bit
Mode Symbol
R/W DMA2_A_STARTL
Description
Reset
15:0
Source start address, lower 16 bits
0x0
Table 706: DMA2_A_STARTH_REG (0x50003522)
Bit
Mode Symbol
R/W DMA2_A_STARTH
Description
Reset
15:0
Source start address, upper 16 bits
0x0
Table 707: DMA2_B_STARTL_REG (0x50003524)
Bit
Mode Symbol
R/W DMA2_B_STARTL
Description
Reset
15:0
Destination start address, lower 16 bits
0x0
Table 708: DMA2_B_STARTH_REG (0x50003526)
Bit
Mode Symbol
R/W DMA2_B_STARTH
Description
Reset
15:0
Destination start address, upper 16 bits
0x0
Table 709: DMA2_INT_REG (0x50003528)
Bit
Mode Symbol
R/W DMA2_INT
Description
Reset
15:0
Number of transfers until an interrupt is generated. The inter- 0x0
rupt is generated after a transfer, if DMAx_INT_REG is equal
to DMAx_IDX_REG and before DMAx_IDX_REG is incre-
mented. The bit-field IRQ_ENABLE of DMAx_CTRL_REG
must be set to '1' to let the controller generate the interrupt.
Table 710: DMA2_LEN_REG (0x5000352A)
Bit
Mode Symbol
R/W DMA2_LEN
Description
Reset
15:0
DMA channel's transfer length. DMAx_LEN of value 0, 1, 2,
... results into an actual transfer length of 1, 2, 3, ...
0x0
Table 711: DMA2_CTRL_REG (0x5000352C)
Bit
Mode Symbol
Description
Reset
0x0
15:13
12
-
-
Reserved
R/W
DMA_INIT
0 = DMA performs copy A1 to B1, A2 to B2, etc ...
1 = DMA performs copy of A1 to B1, B2, etc ...
0x0
This feature is useful for memory initialization to any value.
Thus, BINC must be set to '1', while AINC is don't care, as
only one fetch from A is done. This process cannot be inter-
rupted by other DMA channels. It is also noted that
DMA_INIT should not be used when DREQ_MODE='1'.
11
R/W
DMA_IDLE
0 = Blocking mode, the DMA performs a fast back-to-back
copy, disabling bus access for any bus master with lower pri-
ority.
0x0
1 = Interrupting mode, the DMA inserts a wait cycle after
each store allowing the CPU to steal cycles or cache to per-
form a burst read. If DREQ_MODE='1', DMA_IDLE is don't
care.
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Table 711: DMA2_CTRL_REG (0x5000352C)
Bit
Mode Symbol
R/W DMA_PRIO
Description
Reset
0x0
10:8
The priority level determines which DMA channel will be
granted access for transferring data, in case more than one
channels are active and request the bus at the same time.
The greater the value, the higher the priority. In specific:
000 = lowest priority
111 = highest priority
If different channels with equal priority level values request
the bus at the same time, an inherent priority mechanism is
applied. According to this mechanism, if, for example, both
the DMA0 and DMA1 channels have the same priority level,
then DMA0 will first be granted access to the bus.
7
R/W
CIRCULAR
0 = Normal mode. The DMA channel stops after having com- 0x0
pleted the transfer of length determined by
DMAx_LEN_REG. DMA_ON automatically deasserts when
the transfer is completed.
1 = Circular mode (applicable only if DREQ_MODE = '1'). In
this mode, DMA_ON never deasserts, as the DMA channel
automatically resets DMAx_IDX_REG and starts a new
transfer.
6
5
4
R/W
R/W
R/W
AINC
Enable increment of source address.
0 = do not increment (source address stays the same during
the transfer)
1 = increment according to the value of BW bit-field (by 1,
when BW="00" ; by 2, when BW="01" ; by 4, when BW="10")
0x0
0x0
0x0
BINC
Enable increment of destination address.
0 = do not increment (destination address stays the same
during the transfer)
1 = increment according to the value of BW bit-field (by 1,
when BW="00" ; by 2, when BW="01" ; by 4, when BW="10")
DREQ_MODE
0 = DMA channel starts immediately
1 = DMA channel must be triggered by peripheral DMA
request (see also the description of DMA_REQ_MUX_REG)
3
R/W
R/W
IRQ_ENABLE
BW
0 = disables interrupts on this channel
1 = enables interrupts on this channel
0x0
0x0
2:1
Bus transfer width:
00 = 1 Byte (suggested for peripherals like UART and 8-bit
SPI)
01 = 2 Bytes (suggested for peripherals like I2C and 16-bit
SPI)
10 = 4 Bytes (suggested for Memory-to-Memory transfers)
11 = Reserved
0
R/W
DMA_ON
0 = DMA channel is off, clocks are disabled
0x0
1 = DMA channel is enabled. This bit will be automatically
cleared after the completion of a transfer, if circular mode is
not enabled. In circular mode, this bit stays set.
Table 712: DMA2_IDX_REG (0x5000352E)
Bit
Mode Symbol
DMA2_IDX
Description
Reset
15:0
R
This (read-only) register determines the data items currently
fetched by the DMA channel, during an on-going transfer.
When the transfer is completed, the register is automatically
reset to 0.
0x0
The DMA channel uses this register to form the source/desti-
nation address of the next DMA cycle, considering also
AINC/BINC and BW.
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Table 713: DMA3_A_STARTL_REG (0x50003530)
Bit
Mode Symbol
R/W DMA3_A_STARTL
Description
Reset
15:0
Source start address, lower 16 bits
0x0
Table 714: DMA3_A_STARTH_REG (0x50003532)
Bit
Mode Symbol
R/W DMA3_A_STARTH
Description
Reset
15:0
Source start address, upper 16 bits
0x0
Table 715: DMA3_B_STARTL_REG (0x50003534)
Bit
Mode Symbol
R/W DMA3_B_STARTL
Description
Reset
15:0
Destination start address, lower 16 bits
0x0
Table 716: DMA3_B_STARTH_REG (0x50003536)
Bit
Mode Symbol
R/W DMA3_B_STARTH
Description
Reset
15:0
Destination start address, upper 16 bits
0x0
Table 717: DMA3_INT_REG (0x50003538)
Bit
Mode Symbol
R/W DMA3_INT
Description
Reset
15:0
Number of transfers until an interrupt is generated. The inter- 0x0
rupt is generated after a transfer, if DMAx_INT_REG is equal
to DMAx_IDX_REG and before DMAx_IDX_REG is incre-
mented. The bit-field IRQ_ENABLE of DMAx_CTRL_REG
must be set to '1' to let the controller generate the interrupt.
Table 718: DMA3_LEN_REG (0x5000353A)
Bit
Mode Symbol
R/W DMA3_LEN
Description
Reset
15:0
DMA channel's transfer length. DMAx_LEN of value 0, 1, 2,
... results into an actual transfer length of 1, 2, 3, ...
0x0
Table 719: DMA3_CTRL_REG (0x5000353C)
Bit
Mode Symbol
Description
Reset
0x0
15:13
12
-
-
Reserved
R/W
DMA_INIT
0 = DMA performs copy A1 to B1, A2 to B2, etc ...
1 = DMA performs copy of A1 to B1, B2, etc ...
0x0
This feature is useful for memory initialization to any value.
Thus, BINC must be set to '1', while AINC is don't care, as
only one fetch from A is done. This process cannot be inter-
rupted by other DMA channels. It is also noted that
DMA_INIT should not be used when DREQ_MODE='1'.
11
R/W
DMA_IDLE
0 = Blocking mode, the DMA performs a fast back-to-back
copy, disabling bus access for any bus master with lower pri-
ority.
0x0
1 = Interrupting mode, the DMA inserts a wait cycle after
each store allowing the CPU to steal cycles or cache to per-
form a burst read. If DREQ_MODE='1', DMA_IDLE is don't
care.
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Table 719: DMA3_CTRL_REG (0x5000353C)
Bit
Mode Symbol
R/W DMA_PRIO
Description
Reset
0x0
10:8
The priority level determines which DMA channel will be
granted access for transferring data, in case more than one
channels are active and request the bus at the same time.
The greater the value, the higher the priority. In specific:
000 = lowest priority
111 = highest priority
If different channels with equal priority level values request
the bus at the same time, an inherent priority mechanism is
applied. According to this mechanism, if, for example, both
the DMA0 and DMA1 channels have the same priority level,
then DMA0 will first be granted access to the bus.
7
R/W
CIRCULAR
0 = Normal mode. The DMA channel stops after having com- 0x0
pleted the transfer of length determined by
DMAx_LEN_REG. DMA_ON automatically deasserts when
the transfer is completed.
1 = Circular mode (applicable only if DREQ_MODE = '1'). In
this mode, DMA_ON never deasserts, as the DMA channel
automatically resets DMAx_IDX_REG and starts a new
transfer.
6
5
4
R/W
R/W
R/W
AINC
Enable increment of source address.
0 = do not increment (source address stays the same during
the transfer)
1 = increment according to the value of BW bit-field (by 1,
when BW="00" ; by 2, when BW="01" ; by 4, when BW="10")
0x0
0x0
0x0
BINC
Enable increment of destination address.
0 = do not increment (destination address stays the same
during the transfer)
1 = increment according to the value of BW bit-field (by 1,
when BW="00" ; by 2, when BW="01" ; by 4, when BW="10")
DREQ_MODE
0 = DMA channel starts immediately
1 = DMA channel must be triggered by peripheral DMA
request (see also the description of DMA_REQ_MUX_REG)
3
R/W
R/W
IRQ_ENABLE
BW
0 = disables interrupts on this channel
1 = enables interrupts on this channel
0x0
0x0
2:1
Bus transfer width:
00 = 1 Byte (suggested for peripherals like UART and 8-bit
SPI)
01 = 2 Bytes (suggested for peripherals like I2C and 16-bit
SPI)
10 = 4 Bytes (suggested for Memory-to-Memory transfers)
11 = Reserved
0
R/W
DMA_ON
0 = DMA channel is off, clocks are disabled
0x0
1 = DMA channel is enabled. This bit will be automatically
cleared after the completion of a transfer, if circular mode is
not enabled. In circular mode, this bit stays set.
Table 720: DMA3_IDX_REG (0x5000353E)
Bit
Mode Symbol
DMA3_IDX
Description
Reset
15:0
R
This (read-only) register determines the data items currently
fetched by the DMA channel, during an on-going transfer.
When the transfer is completed, the register is automatically
reset to 0.
0x0
The DMA channel uses this register to form the source/desti-
nation address of the next DMA cycle, considering also
AINC/BINC and BW.
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Table 721: DMA4_A_STARTL_REG (0x50003540)
Bit
Mode Symbol
R/W DMA4_A_STARTL
Description
Reset
15:0
Source start address, lower 16 bits
0x0
Table 722: DMA4_A_STARTH_REG (0x50003542)
Bit
Mode Symbol
R/W DMA4_A_STARTH
Description
Reset
15:0
Source start address, upper 16 bits
0x0
Table 723: DMA4_B_STARTL_REG (0x50003544)
Bit
Mode Symbol
R/W DMA4_B_STARTL
Description
Reset
15:0
Destination start address, lower 16 bits
0x0
Table 724: DMA4_B_STARTH_REG (0x50003546)
Bit
Mode Symbol
R/W DMA4_B_STARTH
Description
Reset
15:0
Destination start address, upper 16 bits
0x0
Table 725: DMA4_INT_REG (0x50003548)
Bit
Mode Symbol
R/W DMA4_INT
Description
Reset
15:0
Number of transfers until an interrupt is generated. The inter- 0x0
rupt is generated after a transfer, if DMAx_INT_REG is equal
to DMAx_IDX_REG and before DMAx_IDX_REG is incre-
mented. The bit-field IRQ_ENABLE of DMAx_CTRL_REG
must be set to '1' to let the controller generate the interrupt.
Table 726: DMA4_LEN_REG (0x5000354A)
Bit
Mode Symbol
R/W DMA4_LEN
Description
Reset
15:0
DMA channel's transfer length. DMAx_LEN of value 0, 1, 2,
... results into an actual transfer length of 1, 2, 3, ...
0x0
Table 727: DMA4_CTRL_REG (0x5000354C)
Bit
Mode Symbol
Description
Reset
0x0
15:13
12
-
-
Reserved
R/W
DMA_INIT
0 = DMA performs copy A1 to B1, A2 to B2, etc ...
1 = DMA performs copy of A1 to B1, B2, etc ...
0x0
This feature is useful for memory initialization to any value.
Thus, BINC must be set to '1', while AINC is don't care, as
only one fetch from A is done. This process cannot be inter-
rupted by other DMA channels. It is also noted that
DMA_INIT should not be used when DREQ_MODE='1'.
11
R/W
DMA_IDLE
0 = Blocking mode, the DMA performs a fast back-to-back
copy, disabling bus access for any bus master with lower pri-
ority.
0x0
1 = Interrupting mode, the DMA inserts a wait cycle after
each store allowing the CPU to steal cycles or cache to per-
form a burst read. If DREQ_MODE='1', DMA_IDLE is don't
care.
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Table 727: DMA4_CTRL_REG (0x5000354C)
Bit
Mode Symbol
R/W DMA_PRIO
Description
Reset
0x0
10:8
The priority level determines which DMA channel will be
granted access for transferring data, in case more than one
channels are active and request the bus at the same time.
The greater the value, the higher the priority. In specific:
000 = lowest priority
111 = highest priority
If different channels with equal priority level values request
the bus at the same time, an inherent priority mechanism is
applied. According to this mechanism, if, for example, both
the DMA0 and DMA1 channels have the same priority level,
then DMA0 will first be granted access to the bus.
7
R/W
CIRCULAR
0 = Normal mode. The DMA channel stops after having com- 0x0
pleted the transfer of length determined by
DMAx_LEN_REG. DMA_ON automatically deasserts when
the transfer is completed.
1 = Circular mode (applicable only if DREQ_MODE = '1'). In
this mode, DMA_ON never deasserts, as the DMA channel
automatically resets DMAx_IDX_REG and starts a new
transfer.
6
5
4
R/W
R/W
R/W
AINC
Enable increment of source address.
0 = do not increment (source address stays the same during
the transfer)
1 = increment according to the value of BW bit-field (by 1,
when BW="00" ; by 2, when BW="01" ; by 4, when BW="10")
0x0
0x0
0x0
BINC
Enable increment of destination address.
0 = do not increment (destination address stays the same
during the transfer)
1 = increment according to the value of BW bit-field (by 1,
when BW="00" ; by 2, when BW="01" ; by 4, when BW="10")
DREQ_MODE
0 = DMA channel starts immediately
1 = DMA channel must be triggered by peripheral DMA
request (see also the description of DMA_REQ_MUX_REG)
3
R/W
R/W
IRQ_ENABLE
BW
0 = disables interrupts on this channel
1 = enables interrupts on this channel
0x0
0x0
2:1
Bus transfer width:
00 = 1 Byte (suggested for peripherals like UART and 8-bit
SPI)
01 = 2 Bytes (suggested for peripherals like I2C and 16-bit
SPI)
10 = 4 Bytes (suggested for Memory-to-Memory transfers)
11 = Reserved
0
R/W
DMA_ON
0 = DMA channel is off, clocks are disabled
0x0
1 = DMA channel is enabled. This bit will be automatically
cleared after the completion of a transfer, if circular mode is
not enabled. In circular mode, this bit stays set.
Table 728: DMA4_IDX_REG (0x5000354E)
Bit
Mode Symbol
DMA4_IDX
Description
Reset
15:0
R
This (read-only) register determines the data items currently
fetched by the DMA channel, during an on-going transfer.
When the transfer is completed, the register is automatically
reset to 0.
0x0
The DMA channel uses this register to form the source/desti-
nation address of the next DMA cycle, considering also
AINC/BINC and BW.
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Table 729: DMA5_A_STARTL_REG (0x50003550)
Bit
Mode Symbol
R/W DMA5_A_STARTL
Description
Reset
15:0
Source start address, lower 16 bits
0x0
Table 730: DMA5_A_STARTH_REG (0x50003552)
Bit
Mode Symbol
R/W DMA5_A_STARTH
Description
Reset
15:0
Source start address, upper 16 bits
0x0
Table 731: DMA5_B_STARTL_REG (0x50003554)
Bit
Mode Symbol
R/W DMA5_B_STARTL
Description
Reset
15:0
Destination start address, lower 16 bits
0x0
Table 732: DMA5_B_STARTH_REG (0x50003556)
Bit
Mode Symbol
R/W DMA5_B_STARTH
Description
Reset
15:0
Destination start address, upper 16 bits
0x0
Table 733: DMA5_INT_REG (0x50003558)
Bit
Mode Symbol
R/W DMA5_INT
Description
Reset
15:0
Number of transfers until an interrupt is generated. The inter- 0x0
rupt is generated after a transfer, if DMAx_INT_REG is equal
to DMAx_IDX_REG and before DMAx_IDX_REG is incre-
mented. The bit-field IRQ_ENABLE of DMAx_CTRL_REG
must be set to '1' to let the controller generate the interrupt.
Table 734: DMA5_LEN_REG (0x5000355A)
Bit
Mode Symbol
R/W DMA5_LEN
Description
Reset
15:0
DMA channel's transfer length. DMAx_LEN of value 0, 1, 2,
... results into an actual transfer length of 1, 2, 3, ...
0x0
Table 735: DMA5_CTRL_REG (0x5000355C)
Bit
Mode Symbol
Description
Reset
0x0
15:13
12
-
-
Reserved
R/W
DMA_INIT
0 = DMA performs copy A1 to B1, A2 to B2, etc ...
1 = DMA performs copy of A1 to B1, B2, etc ...
0x0
This feature is useful for memory initialization to any value.
Thus, BINC must be set to '1', while AINC is don't care, as
only one fetch from A is done. This process cannot be inter-
rupted by other DMA channels. It is also noted that
DMA_INIT should not be used when DREQ_MODE='1'.
11
R/W
DMA_IDLE
0 = Blocking mode, the DMA performs a fast back-to-back
copy, disabling bus access for any bus master with lower pri-
ority.
0x0
1 = Interrupting mode, the DMA inserts a wait cycle after
each store allowing the CPU to steal cycles or cache to per-
form a burst read. If DREQ_MODE='1', DMA_IDLE is don't
care.
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Table 735: DMA5_CTRL_REG (0x5000355C)
Bit
Mode Symbol
R/W DMA_PRIO
Description
Reset
0x0
10:8
The priority level determines which DMA channel will be
granted access for transferring data, in case more than one
channels are active and request the bus at the same time.
The greater the value, the higher the priority. In specific:
000 = lowest priority
111 = highest priority
If different channels with equal priority level values request
the bus at the same time, an inherent priority mechanism is
applied. According to this mechanism, if, for example, both
the DMA0 and DMA1 channels have the same priority level,
then DMA0 will first be granted access to the bus.
7
R/W
CIRCULAR
0 = Normal mode. The DMA channel stops after having com- 0x0
pleted the transfer of length determined by
DMAx_LEN_REG. DMA_ON automatically deasserts when
the transfer is completed.
1 = Circular mode (applicable only if DREQ_MODE = '1'). In
this mode, DMA_ON never deasserts, as the DMA channel
automatically resets DMAx_IDX_REG and starts a new
transfer.
6
5
4
R/W
R/W
R/W
AINC
Enable increment of source address.
0 = do not increment (source address stays the same during
the transfer)
1 = increment according to the value of BW bit-field (by 1,
when BW="00" ; by 2, when BW="01" ; by 4, when BW="10")
0x0
0x0
0x0
BINC
Enable increment of destination address.
0 = do not increment (destination address stays the same
during the transfer)
1 = increment according to the value of BW bit-field (by 1,
when BW="00" ; by 2, when BW="01" ; by 4, when BW="10")
DREQ_MODE
0 = DMA channel starts immediately
1 = DMA channel must be triggered by peripheral DMA
request (see also the description of DMA_REQ_MUX_REG)
3
R/W
R/W
IRQ_ENABLE
BW
0 = disables interrupts on this channel
1 = enables interrupts on this channel
0x0
0x0
2:1
Bus transfer width:
00 = 1 Byte (suggested for peripherals like UART and 8-bit
SPI)
01 = 2 Bytes (suggested for peripherals like I2C and 16-bit
SPI)
10 = 4 Bytes (suggested for Memory-to-Memory transfers)
11 = Reserved
0
R/W
DMA_ON
0 = DMA channel is off, clocks are disabled
0x0
1 = DMA channel is enabled. This bit will be automatically
cleared after the completion of a transfer, if circular mode is
not enabled. In circular mode, this bit stays set.
Table 736: DMA5_IDX_REG (0x5000355E)
Bit
Mode Symbol
DMA5_IDX
Description
Reset
15:0
R
This (read-only) register determines the data items currently
fetched by the DMA channel, during an on-going transfer.
When the transfer is completed, the register is automatically
reset to 0.
0x0
The DMA channel uses this register to form the source/desti-
nation address of the next DMA cycle, considering also
AINC/BINC and BW.
Datasheet
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Bluetooth Low Energy 4.2 SoC
Table 737: DMA6_A_STARTL_REG (0x50003560)
Bit
Mode Symbol
R/W DMA6_A_STARTL
Description
Reset
15:0
Source start address, lower 16 bits
0x0
Table 738: DMA6_A_STARTH_REG (0x50003562)
Bit
Mode Symbol
R/W DMA6_A_STARTH
Description
Reset
15:0
Source start address, upper 16 bits
0x0
Table 739: DMA6_B_STARTL_REG (0x50003564)
Bit
Mode Symbol
R/W DMA6_B_STARTL
Description
Reset
15:0
Destination start address, lower 16 bits
0x0
Table 740: DMA6_B_STARTH_REG (0x50003566)
Bit
Mode Symbol
R/W DMA6_B_STARTH
Description
Reset
15:0
Destination start address, upper 16 bits
0x0
Table 741: DMA6_INT_REG (0x50003568)
Bit
Mode Symbol
R/W DMA6_INT
Description
Reset
15:0
Number of transfers until an interrupt is generated. The inter- 0x0
rupt is generated after a transfer, if DMAx_INT_REG is equal
to DMAx_IDX_REG and before DMAx_IDX_REG is incre-
mented. The bit-field IRQ_ENABLE of DMAx_CTRL_REG
must be set to '1' to let the controller generate the interrupt.
Table 742: DMA6_LEN_REG (0x5000356A)
Bit
Mode Symbol
R/W DMA6_LEN
Description
Reset
15:0
DMA channel's transfer length. DMAx_LEN of value 0, 1, 2,
... results into an actual transfer length of 1, 2, 3, ...
0x0
Table 743: DMA6_CTRL_REG (0x5000356C)
Bit
Mode Symbol
Description
Reset
0x0
15:13
12
-
-
Reserved
R/W
DMA_INIT
0 = DMA performs copy A1 to B1, A2 to B2, etc ...
1 = DMA performs copy of A1 to B1, B2, etc ...
0x0
This feature is useful for memory initialization to any value.
Thus, BINC must be set to '1', while AINC is don't care, as
only one fetch from A is done. This process cannot be inter-
rupted by other DMA channels. It is also noted that
DMA_INIT should not be used when DREQ_MODE='1'.
11
R/W
DMA_IDLE
0 = Blocking mode, the DMA performs a fast back-to-back
copy, disabling bus access for any bus master with lower pri-
ority.
0x0
1 = Interrupting mode, the DMA inserts a wait cycle after
each store allowing the CPU to steal cycles or cache to per-
form a burst read. If DREQ_MODE='1', DMA_IDLE is don't
care.
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Table 743: DMA6_CTRL_REG (0x5000356C)
Bit
Mode Symbol
R/W DMA_PRIO
Description
Reset
0x0
10:8
The priority level determines which DMA channel will be
granted access for transferring data, in case more than one
channels are active and request the bus at the same time.
The greater the value, the higher the priority. In specific:
000 = lowest priority
111 = highest priority
If different channels with equal priority level values request
the bus at the same time, an inherent priority mechanism is
applied. According to this mechanism, if, for example, both
the DMA0 and DMA1 channels have the same priority level,
then DMA0 will first be granted access to the bus.
7
R/W
CIRCULAR
0 = Normal mode. The DMA channel stops after having com- 0x0
pleted the transfer of length determined by
DMAx_LEN_REG. DMA_ON automatically deasserts when
the transfer is completed.
1 = Circular mode (applicable only if DREQ_MODE = '1'). In
this mode, DMA_ON never deasserts, as the DMA channel
automatically resets DMAx_IDX_REG and starts a new
transfer.
6
5
4
R/W
R/W
R/W
AINC
Enable increment of source address.
0 = do not increment (source address stays the same during
the transfer)
1 = increment according to the value of BW bit-field (by 1,
when BW="00" ; by 2, when BW="01" ; by 4, when BW="10")
0x0
0x0
0x0
BINC
Enable increment of destination address.
0 = do not increment (destination address stays the same
during the transfer)
1 = increment according to the value of BW bit-field (by 1,
when BW="00" ; by 2, when BW="01" ; by 4, when BW="10")
DREQ_MODE
0 = DMA channel starts immediately
1 = DMA channel must be triggered by peripheral DMA
request (see also the description of DMA_REQ_MUX_REG)
3
R/W
R/W
IRQ_ENABLE
BW
0 = disables interrupts on this channel
1 = enables interrupts on this channel
0x0
0x0
2:1
Bus transfer width:
00 = 1 Byte (suggested for peripherals like UART and 8-bit
SPI)
01 = 2 Bytes (suggested for peripherals like I2C and 16-bit
SPI)
10 = 4 Bytes (suggested for Memory-to-Memory transfers)
11 = Reserved
0
R/W
DMA_ON
0 = DMA channel is off, clocks are disabled
0x0
1 = DMA channel is enabled. This bit will be automatically
cleared after the completion of a transfer, if circular mode is
not enabled. In circular mode, this bit stays set.
Table 744: DMA6_IDX_REG (0x5000356E)
Bit
Mode Symbol
DMA6_IDX
Description
Reset
15:0
R
This (read-only) register determines the data items currently
fetched by the DMA channel, during an on-going transfer.
When the transfer is completed, the register is automatically
reset to 0.
0x0
The DMA channel uses this register to form the source/desti-
nation address of the next DMA cycle, considering also
AINC/BINC and BW.
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Table 745: DMA7_A_STARTL_REG (0x50003570)
Bit
Mode Symbol
R/W DMA7_A_STARTL
Description
Reset
15:0
Source start address, lower 16 bits
0x0
Table 746: DMA7_A_STARTH_REG (0x50003572)
Bit
Mode Symbol
R/W DMA7_A_STARTH
Description
Reset
15:0
Source start address, upper 16 bits
0x0
Table 747: DMA7_B_STARTL_REG (0x50003574)
Bit
Mode Symbol
R/W DMA7_B_STARTL
Description
Reset
15:0
Destination start address, lower 16 bits
0x0
Table 748: DMA7_B_STARTH_REG (0x50003576)
Bit
Mode Symbol
R/W DMA7_B_STARTH
Description
Reset
15:0
Destination start address, upper 16 bits
0x0
Table 749: DMA7_INT_REG (0x50003578)
Bit
Mode Symbol
R/W DMA7_INT
Description
Reset
15:0
Number of transfers until an interrupt is generated. The inter- 0x0
rupt is generated after a transfer, if DMAx_INT_REG is equal
to DMAx_IDX_REG and before DMAx_IDX_REG is incre-
mented. The bit-field IRQ_ENABLE of DMAx_CTRL_REG
must be set to '1' to let the controller generate the interrupt.
Table 750: DMA7_LEN_REG (0x5000357A)
Bit
Mode Symbol
R/W DMA7_LEN
Description
Reset
15:0
DMA channel's transfer length. DMAx_LEN of value 0, 1, 2,
... results into an actual transfer length of 1, 2, 3, ...
0x0
Table 751: DMA7_CTRL_REG (0x5000357C)
Bit
Mode Symbol
Description
Reset
0x0
15:13
12
-
-
Reserved
R/W
DMA_INIT
0 = DMA performs copy A1 to B1, A2 to B2, etc ...
1 = DMA performs copy of A1 to B1, B2, etc ...
0x0
This feature is useful for memory initialization to any value.
Thus, BINC must be set to '1', while AINC is don't care, as
only one fetch from A is done. This process cannot be inter-
rupted by other DMA channels. It is also noted that
DMA_INIT should not be used when DREQ_MODE='1'.
11
R/W
DMA_IDLE
0 = Blocking mode, the DMA performs a fast back-to-back
copy, disabling bus access for any bus master with lower pri-
ority.
0x0
1 = Interrupting mode, the DMA inserts a wait cycle after
each store allowing the CPU to steal cycles or cache to per-
form a burst read. If DREQ_MODE='1', DMA_IDLE is don't
care.
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Table 751: DMA7_CTRL_REG (0x5000357C)
Bit
Mode Symbol
R/W DMA_PRIO
Description
Reset
0x0
10:8
The priority level determines which DMA channel will be
granted access for transferring data, in case more than one
channels are active and request the bus at the same time.
The greater the value, the higher the priority. In specific:
000 = lowest priority
111 = highest priority
If different channels with equal priority level values request
the bus at the same time, an inherent priority mechanism is
applied. According to this mechanism, if, for example, both
the DMA0 and DMA1 channels have the same priority level,
then DMA0 will first be granted access to the bus.
7
R/W
CIRCULAR
0 = Normal mode. The DMA channel stops after having com- 0x0
pleted the transfer of length determined by
DMAx_LEN_REG. DMA_ON automatically deasserts when
the transfer is completed.
1 = Circular mode (applicable only if DREQ_MODE = '1'). In
this mode, DMA_ON never deasserts, as the DMA channel
automatically resets DMAx_IDX_REG and starts a new
transfer.
6
5
4
R/W
R/W
R/W
AINC
Enable increment of source address.
0 = do not increment (source address stays the same during
the transfer)
1 = increment according to the value of BW bit-field (by 1,
when BW="00" ; by 2, when BW="01" ; by 4, when BW="10")
0x0
0x0
0x0
BINC
Enable increment of destination address.
0 = do not increment (destination address stays the same
during the transfer)
1 = increment according to the value of BW bit-field (by 1,
when BW="00" ; by 2, when BW="01" ; by 4, when BW="10")
DREQ_MODE
0 = DMA channel starts immediately
1 = DMA channel must be triggered by peripheral DMA
request (see also the description of DMA_REQ_MUX_REG)
3
R/W
R/W
IRQ_ENABLE
BW
0 = disables interrupts on this channel
1 = enables interrupts on this channel
0x0
0x0
2:1
Bus transfer width:
00 = 1 Byte (suggested for peripherals like UART and 8-bit
SPI)
01 = 2 Bytes (suggested for peripherals like I2C and 16-bit
SPI)
10 = 4 Bytes (suggested for Memory-to-Memory transfers)
11 = Reserved
0
R/W
DMA_ON
0 = DMA channel is off, clocks are disabled
0x0
1 = DMA channel is enabled. This bit will be automatically
cleared after the completion of a transfer, if circular mode is
not enabled. In circular mode, this bit stays set.
Table 752: DMA7_IDX_REG (0x5000357E)
Bit
Mode Symbol
DMA7_IDX
Description
Reset
15:0
R
This (read-only) register determines the data items currently
fetched by the DMA channel, during an on-going transfer.
When the transfer is completed, the register is automatically
reset to 0.
0x0
The DMA channel uses this register to form the source/desti-
nation address of the next DMA cycle, considering also
AINC/BINC and BW.
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Table 753: DMA_REQ_MUX_REG (0x50003580)
Bit
Mode Symbol
DMA67_SEL
Description
Reset
15:12
R/W
R/W
R/W
R/W
Select which combination of peripherals are mapped on the
DMA channels. The peripherals are mapped as pairs on two
channels.
Here, the first DMA request is mapped on channel 6 and the
second on channel 7.
0x0
0x0
0x0
0x0
See DMA01_SEL for the peripherals' mapping.
11:8
7:4
DMA45_SEL
DMA23_SEL
DMA01_SEL
Select which combination of peripherals are mapped on the
DMA channels. The peripherals are mapped as pairs on two
channels.
Here, the first DMA request is mapped on channel 4 and the
second on channel 5.
See DMA01_SEL for the peripherals' mapping.
Select which combination of peripherals are mapped on the
DMA channels. The peripherals are mapped as pairs on two
channels.
Here, the first DMA request is mapped on channel 2 and the
second on channel 3.
See DMA01_SEL for the peripherals' mapping.
3:0
Select which combination of peripherals are mapped on the
DMA channels. The peripherals are mapped as pairs on two
channels.
Here, the first DMA request is mapped on channel 0 and the
second on channel 1.
0x0: SPI_rx / SPI_tx
0x1: SPI2_rx / SPI2_tx
0x2: UART_rx / UART_tx
0x3: UART2_rx / UART2_tx
0x4: I2C_rx / I2C_tx
0x5: I2C2_rx / I2C2_tx
0x6: USB_rx / USB_tx
0x7: Reserved
0x8: PCM_rx / PCM_tx
0x9: SRC_rx / SRC_tx (for all the supported conversions)
0xA: Reserved
0xB: Reserved
0xC: ADC / -
0xD: Reserved
0xE: Reserved
0xF: Reserved
Note: If any of the four available peripheral selector fields
(DMA01_SEL, DMA23_SEL, DMA45_SEL, DMA67_SEL)
have the same value, the lesser significant selector has
higher priority and will control the dma acknowledge. Hence,
if DMA01_SEL = DMA23_SEL, the channels 0 and 1 will
generate the DMA acknowledge signals for the selected
peripheral. Consequently, it is suggested to assign the
intended peripheral value to a unique selector field.
Table 754: DMA_INT_STATUS_REG (0x50003582)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
DMA_IRQ_CH7
0 = IRQ on channel 7 is not set
1 = IRQ on channel 7 is set
0x0
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Table 754: DMA_INT_STATUS_REG (0x50003582)
Bit
Mode Symbol
Description
Reset
6
R
R
R
R
R
R
R
DMA_IRQ_CH6
0 = IRQ on channel 6 is not set
1 = IRQ on channel 6 is set
0x0
0x0
0x0
0x0
0x0
0x0
0x0
5
4
3
2
1
0
DMA_IRQ_CH5
DMA_IRQ_CH4
DMA_IRQ_CH3
DMA_IRQ_CH2
DMA_IRQ_CH1
DMA_IRQ_CH0
0 = IRQ on channel 5 is not set
1 = IRQ on channel 5 is set
0 = IRQ on channel 4 is not set
1 = IRQ on channel 4 is set
0 = IRQ on channel 3 is not set
1 = IRQ on channel 3 is set
0 = IRQ on channel 2 is not set
1 = IRQ on channel 2 is set
0 = IRQ on channel 1 is not set
1 = IRQ on channel 1 is set
0 = IRQ on channel 0 is not set
1 = IRQ on channel 0 is set
Table 755: DMA_CLEAR_INT_REG (0x50003584)
Bit
15:8
7
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R0/W
DMA_RST_IRQ_CH7 Writing a 1 will reset the IRQ of channel 7 ; writing a 0 will
have no effect.
0x0
6
5
4
3
2
1
0
R0/W
R0/W
R0/W
R0/W
R0/W
R0/W
R0/W
DMA_RST_IRQ_CH6 Writing a 1 will reset the IRQ of channel 6 ; writing a 0 will
have no effect.
0x0
0x0
0x0
0x0
0x0
0x0
0x0
DMA_RST_IRQ_CH5 Writing a 1 will reset the IRQ of channel 5 ; writing a 0 will
have no effect.
DMA_RST_IRQ_CH4 Writing a 1 will reset the IRQ of channel 4 ; writing a 0 will
have no effect.
DMA_RST_IRQ_CH3 Writing a 1 will reset the IRQ of channel 3 ; writing a 0 will
have no effect.
DMA_RST_IRQ_CH2 Writing a 1 will reset the IRQ of channel 2 ; writing a 0 will
have no effect.
DMA_RST_IRQ_CH1 Writing a 1 will reset the IRQ of channel 1 ; writing a 0 will
have no effect.
DMA_RST_IRQ_CH0 Writing a 1 will reset the IRQ of channel 0 ; writing a 0 will
have no effect.
37.27 APU REGISTER FILE
Table 756: Register map APU
Address
Port
Description
0x50004000
0x50004004
0x50004008
0x5000400C
0x50004010
0x50004014
0x50004018
0x5000401C
0x50004020
SRC1_CTRL_REG
SRC1_IN_FS_REG
SRC1_OUT_FS_REG
SRC1_IN1_REG
SRC1_IN2_REG
SRC1_OUT1_REG
SRC1_OUT2_REG
APU_MUX_REG
COEF10_SET1_REG
SRC1 control register
SRC1 Sample input rate
SRC1 Sample output rate
SRC1 data in 1
SRC1 data in 2
SRC1 data out 1
SRC1 data out 2
APU mux register
SRC coefficient 1,0 set 1
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Table 756: Register map APU
Address
Port
Description
0x50004024
0x50004028
0x5000402C
0x50004030
0x50004034
0x50004100
0x50004104
0x50004108
0x5000410C
0x50004110
COEF32_SET1_REG
COEF54_SET1_REG
COEF76_SET1_REG
COEF98_SET1_REG
COEF0A_SET1_REG
PCM1_CTRL_REG
PCM1_IN1_REG
PCM1_IN2_REG
PCM1_OUT1_REG
PCM1_OUT2_REG
SRC coefficient 3,2 set 1
SRC coefficient 5,4 set 1
SRC coefficient 7,6 set 1
SRC coefficient 9,8 set 1
SRC coefficient 10 set 1
PCM1 Control register
PCM1 data in 1
PCM1 data in 2
PCM1 data out 1
PCM1 data out 2
Table 757: SRC1_CTRL_REG (0x50004000)
Bit
Mode Symbol
Description
Reset
31:30
29:28
-
-
Reserved
0
0
R/W
SRC_PDM_MODE
PDM Output mode selection on PDM_DO1
00: No output
01: Right channel (falling edge of PDM_CLK)
10: Left channel (rising edge of PDM_CLK)
11: Left and Right channel
27:26
25
-
-
Reserved
0
0
W
SRC_OUT_FLOWCL
R
Writing a 1 clears the SRC1_OUT Overflow/underflow bits
23-22. No more over/underflow indications while bit is 1.
Keep 1 until the over/under flow bit is cleared
24
W
SRC_IN_FLOWCLR
Writing a 1 clears the SRC1_IN Overflow/underflow bits 21-
20. No more over/underflow indications while bit is 1. Keep 1
until the over/under flow bit is cleared
0
23
22
21
20
19
18
R
R
R
R
-
SRC_OUT_UNFLOW 1 = SRC1_OUT Underflow occurred
SRC_OUT_OVFLOW 1 = SRC1_OUT Overflow occurred
0
0
0
0
0
0
SRC_IN_UNFLOW
SRC_IN_OVFLOW
-
1 = SRC1_IN Underflow occurred
1 = SRC1_IN Overflow occurred
Reserved
R
SRC_OUT_OK
SRC1_OUT Status
0: acquisition in progress
1: acquisition ready (In manual mode this bit is always 1)
17:16
R/W
SRC_OUT_US
SRC1_OUT UpSampling IIR filters setting
00: for sample rates up-to 48kHz
01: for sample rates of 96kHz
10: reserved
0
11: for sample rates of 192kHz
15
14
-
-
Reserved
0
0
R/W
SRC_OUT_CAL_BY
PASS
SRC1_OUT1 upsampiling filter bypass
0:Do not bypass
1:Bypass filter
13
R/W
SRC_OUT_AMODE
SRC1_OUT1 Automatic Conversion mode
0:Manual mode
0
1:Automatic mode
12:10
9:8
-
-
-
-
Reserved
Reserved
0
0
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Table 757: SRC1_CTRL_REG (0x50004000)
Bit
Mode Symbol
Description
Reset
7
R/W
R
SRC_DITHER_DISA
BLE
Dithering feature
0: Enable
1: Disable
0
0
0
6
SRC_IN_OK
SRC1_IN status
0: Acquisition in progress
1: Acquisition ready
5:4
R/W
SRC_IN_DS
SRC1_IN UpSampling IIR filters setting
00: for sample rates up-to 48kHz
01: for sample rates of 96kHz
10: reserved
11: for sample rates of 192kHz
3
2
-
-
Reserved
0
0
R/W
SRC_IN_CAL_BYPA
SS
SRC1_IN upsampeling filter bypass
0: Do not bypass
1: Bypass filter
1
0
R/W
R/W
SRC_IN_AMODE
SRC_EN
SRC1_IN Automatic conversion mode
0: Manual mode
1: Automatic mode
0
0
SRC1_IN and SRC1_OUT enable
0: disabled
1: enabled
Table 758: SRC1_IN_FS_REG (0x50004004)
Bit
Mode Symbol
Description
Reset
31:24
23:0
-
-
Reserved
0
0
R/W
SRC_IN_FS
SRC_IN Sample rate
SRC_IN_FS = 8192*Sample_rate/100
Sample_rate upper limit is 192 kHz. For 96 kHz and 192 kHz
SRC_CTRLx_REG[SRC_IN_DS] must be set as shown
below:
Sample_rate SRC_IN_FS SRC_IN_DS Audio BW
8000 Hz
0xA0000
0
0
0
0
0
0
0
1
3
4000 Hz
5512 Hz
8000 Hz
11025 Hz
16000 Hz
22050 Hz
24000 Hz
24000 Hz
24000 Hz
11025 Hz
16000 Hz
22050 Hz
32000 Hz
44100 Hz
48000 Hz
96000 Hz
192000 Hz
0x0DC800
0x140000
0x1B9000
0x280000
0x372000
0x3C0000
0x3C0000
0x3C0000
In manual SRC mode, SRC_IN_FS can be set and adjusted
to the desired sample rate at any time.
In automatic mode the SRC returns the final sample rate as
soon as SRC_IN_OK. Note that SRC_DS is not calculated in
automatic mode and must be set manually automatic mode
with Sample_rate of 96 kHz and 192 kHz.
Table 759: SRC1_OUT_FS_REG (0x50004008)
Bit
Mode Symbol
Description
Reset
31:24
-
-
Reserved
0
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Table 759: SRC1_OUT_FS_REG (0x50004008)
Bit
Mode Symbol
R/W SRC_OUT_FS
Description
Reset
23:0
SRC_OUT Sample rate
0
SRC_OUT_FS = 8192*Sample_rate/100
Sample_rate upper limit is 192 kHz. For 96 kHz and 192 kHz
SRC_CTRLx_REG[SRC_DS] must be set as shown below:
Sample_rate SRC_OUT_FS SRC_OUT_DS Audio BW
8000 Hz
0xA0000
0
0
0
0
0
0
0
1
3
4000 Hz
5512 Hz
8000 Hz
11025 Hz
16000 Hz
22050 Hz
24000 Hz
24000 Hz
24000 Hz
11025 Hz
16000 Hz
22050 Hz
32000 Hz
44100 Hz
48000 Hz
96000 Hz
192000 Hz
0x0DC800
0x140000
0x1B9000
0x280000
0x372000
0x3C0000
0x3C0000
0x3C0000
In manual SRC mode, SRC_OUT_FS can be set and
adjusted to the desired sample rate at any time.
In automatic mode the SRC returns the final sample rate as
soon as SRC_OUT_OK. Note that SRC_DS is not calculated
in automatic mode and must be set manually automatic
mode with Sample_rate of 96 kHz and 192 kHz.
Table 760: SRC1_IN1_REG (0x5000400C)
Bit
Mode Symbol
R/W SRC_IN
Description
Reset
31:8
SRC1_IN1
0
Table 761: SRC1_IN2_REG (0x50004010)
Bit
Mode Symbol
R/W SRC_IN
Description
Reset
31:8
SRC1_IN2
0
Table 762: SRC1_OUT1_REG (0x50004014)
Bit
Mode Symbol
SRC_OUT
Description
Reset
31:8
R
SRC1_OUT1
0
Table 763: SRC1_OUT2_REG (0x50004018)
Bit
Mode Symbol
SRC_OUT
Description
Reset
31:8
R
SRC1_OUT2
0
Table 764: APU_MUX_REG (0x5000401C)
Bit
Mode Symbol
Description
Reset
6
R/W
R/W
PDM1_MUX_IN
PDM1 input mux
0 = SRC1_MUX_IN
1 = PDM input
0x0
5:3
PCM1_MUX_IN
PCM1 input mux
0 = off
0x0
1 = SRC1 output
2 = PCM output registers
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Table 764: APU_MUX_REG (0x5000401C)
Bit
Mode Symbol
R/W SRC1_MUX_IN
Description
Reset
2:0
SRC1 input mux
0 = off
0x0
1 = PCM output
2 = SRC1 input registers
Table 765: COEF10_SET1_REG (0x50004020)
Bit
Mode Symbol
Description
coefficient 1
coefficient 0
Reset
31:16
15:0
R/W
R/W
SRC_COEF1
SRC_COEF0
0x79A9
0x9278
Table 766: COEF32_SET1_REG (0x50004024)
Bit
Mode Symbol
Description
coefficient 3
coefficient 2
Reset
31:16
15:0
R/W
R/W
SRC_COEF3
SRC_COEF2
0x6D56
0x8B41
Table 767: COEF54_SET1_REG (0x50004028)
Bit
Mode Symbol
Description
coefficient 5
coefficient 4
Reset
31:16
15:0
R/W
R/W
SRC_COEF5
SRC_COEF4
0x9BC5
0xBE15
Table 768: COEF76_SET1_REG (0x5000402C)
Bit
Mode Symbol
Description
Reset
31:16
R/W
SRC_COEF7
coefficient 7
0x8C28
15:0
R/W
SRC_COEF6
coefficient 6
0x7E1A
Table 769: COEF98_SET1_REG (0x50004030)
Bit
Mode Symbol
Description
coefficient 9
coefficient 8
Reset
31:16
15:0
R/W
R/W
SRC_COEF9
SRC_COEF8
0x92D7
0x75E6
Table 770: COEF0A_SET1_REG (0x50004034)
Bit
Mode Symbol
R/W SRC_COEF10
Description
Reset
15:0
coefficient 10
0x41F2
Table 771: PCM1_CTRL_REG (0x50004100)
Bit
Mode Symbol
Description
Reset
31:20
R/W
-
PCM_FSC_DIV
PCM Framesync divider, Values 7-0xFFF. To divide by N,
write N-1. (Minimum value N-1=7 for 8 bits PCM_FSC)
Note if PCM_CLK_BIT=1, N must always be even
0x0
19:17
-
Reserved
0x0
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Table 771: PCM1_CTRL_REG (0x50004100)
Bit
Mode Symbol
Description
Reset
16
R/W
PCM_FSC_EDGE
0: shift channels 1, 2, 3, 4, 5, 6, 7, 8 after PCM_FSC edge
1: shift channels 1, 2, 3, 4 after PCM_FSC edge shift chan-
nels 5, 6, 7, 8 after opposite PCM_FSC edge
0x0
15:11
10
R/W
R/W
PCM_CH_DEL
PCM_CLK_BIT
Channel delay in multiples of 8 bits
0x0
0x0
0:One clock cycle per data bit
1:Two cloc cycles per data bit
9
R/W
R/W
R/W
R/W
R/W
R/W
R/W
PCM_FSCINV
PCM_CLKINV
PCM_PPOD
PCM_FSCDEL
PCM_FSCLEN
PCM_MASTER
PCM_EN
0: PCM FSC
1: PCM FSC inverted
0x0
0x0
0x0
0x0
0x0
0x0
0x0
8
0:PCM CLK
1:PCM CLK inverted
7
0:PCM DO push pull
1:PCM DO open drain
6
0:PCM FSC starts one cycle before MSB bit
1:PCM FSC starts at the same time as MSB bit
5:2
1
0:PCM FSC length equal to 1 data bit
N:PCM FSC length equal to N*8
0:PCM interface in slave mode
1:PCM interface in master mode
0
0:PCM interface disabled
1:PCM interface enabled
Table 772: PCM1_IN1_REG (0x50004104)
Bit
Mode Symbol
PCM_IN
Description
Reset
31:0
R
PCM1_IN1 bits 31-0
0xFFFFF
FFF
Table 773: PCM1_IN2_REG (0x50004108)
Bit
Mode Symbol
PCM_IN
Description
Reset
31:0
R
PCM1_IN2 bits 31-0
0xFFFFF
FFF
Table 774: PCM1_OUT1_REG (0x5000410C)
Bit
Mode Symbol
R/W PCM_OUT
Description
Reset
31:0
PCM1_OUT1 bits 31-0
0xFFFFF
FFF
Table 775: PCM1_OUT2_REG (0x50004110)
Bit
Mode Symbol
R/W PCM_OUT
Description
Reset
31:0
PCM1_OUT2 bits 31-0
0xFFFFF
FFF
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37.28 TRNG REGISTER FILE
Table 776: Register map TRNG
Address
Port
Description
0x50005000
0x50005004
0x50005008
TRNG_CTRL_REG
TRNG_FIFOLVL_REG
TRNG_VER_REG
TRNG control register
TRNG FIFO level register
TRNG Version register
Table 777: TRNG_CTRL_REG (0x50005000)
Bit
31:2
1
Mode Symbol
Description
Reset
-
-
Reserved
0x0
0x0
R/W
TRNG_MODE
0: select the TRNG with asynchronous free running oscilla-
tors (default)
1: select the pseudo-random generator with synchronous
oscillators (for simulation purpose only)
0
R/W
TRNG_ENABLE
0: Disable the TRNG
0x0
1: Enable the TRNG this signal is ignored when the FIFO is
full
Table 778: TRNG_FIFOLVL_REG (0x50005004)
Bit
31:6
5
Mode Symbol
Description
Reset
0x0
-
-
Reserved
R
R
TRNG_FIFOFULL
TRNG_FIFOLVL
1:FIFO full indication. This bit is cleared if the FIFO is read.
0x0
4:0
Number of 32 bit words of random data in the FIFO (max 31)
until the FIFO is full. When it is 0 and TRNG_FIFOFULL is 1,
it means the FIFO is full.
0x0
Table 779: TRNG_VER_REG (0x50005008)
Bit
Mode Symbol
Description
Reset
0x0
31:24
23:16
15:0
R
R
R
TRNG_MAJ
Major version number
Minor version number
SVN revision number
TRNG_MIN
TRNG_SVN
0x0
0x103
37.29 ELLIPTIC CURVE CONTROLLER REGISTER FILE
Table 780: Register map Elliptic Curve Controller
Address
Port
Description
0x50006000
0x50006004
0x50006008
0x5000600C
0x50006010
ECC_CONFIG_REG
ECC_COMMAND_REG
ECC_CONTROL_REG
ECC_STATUS_REG
ECC_VERSION_REG
Configuration register
Command register
Control register
Status register
Version register
Table 781: ECC_CONFIG_REG (0x50006000)
Bit
Mode Symbol
Description
Reset
20:16
R/W
-
ECC_OPPTRC
When executing primitive arithmetic operations, this pointer
defines the location where the result will be stored in Mem-
ory.
0x0
15:13
-
Reserved
0x0
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Table 781: ECC_CONFIG_REG (0x50006000)
Bit
Mode Symbol
Description
Reset
12:8
R/W
ECC_OPPTRB
When executing primitive arithmetic operations, this Pointer
defines where operand B is located in memory.
0x0
7:5
4:0
-
-
Reserved
0x0
0x0
R/W
ECC_OPPTRA
When executing primitive arithmetic operations, this Pointer
defines where operand A is located in memory.
Table 782: ECC_COMMAND_REG (0x50006004)
Bit
Mode Symbol
Description
Reset
31
R/W
ECC_CALCR2
This bit indicates if the IP has to calculate R mod N for the
next operation. This bit must be set to 1 when a new prime
number has been programmed. This bit is automatically
cleared when R mod N has been calculated.
'0': no effect
0x0
'1': forces the IP to re-calculate R mod N
30
29
R/W
R/W
ECC_SIGNB
ECC_SIGNA
-
Sign of parameter B in equation y2=x3+Ax+B
'0': B is positive
'1': B is negative
0x0
0x0
Sign of parameter A in equation y2=x3+Ax+B
'0': A is positive
'1': A is negative
28:16
15:8
-
Reserved
0x0
0x0
R/W
ECC_SIZEOFOPER
ANDS
This field defines the size (= number of 64-bit double words)
of the operands for the current operation. Possible values
are limited by the generic parameter g_Log2MaxDataSize
that defines the max space allocated or reserved to each
operand.
Arbitrary Data/Key size from 128 up to 2566 are supported:
0x02 (02d) -> 128-bit Data/Key size
0x03 (02d) -> 256-bit Data/Key size
ECC-ECDSA - Prime Field F(p)
0x03 -> 192-bit (Curve P-192)
0x04 -> 256-bit (Curves P-224 & P-256)
ECC-ECDSA - Binary Field F(2m)
0x03 -> 192-bit (Curve K-163)
0x04 -> 256-bit (Curve K-233)
- 4 Xers: 0x01, 0x02, 0x4, 0x6 -> 64, 128 & multiples of 128
bits
7
R/W
ECC_FIELD
'0': Field is F(p)
0x0
'1': Field is F(2m)
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Table 782: ECC_COMMAND_REG (0x50006004)
Bit
Mode Symbol
Description
Reset
0x0
6:0
R/W ECC_TYPEOPERATI Primitive Arithmetic Operations F(p) & F(2m)
ON
[6:4] = 0x0
[3:0] =
0x0 -> Reserved
0x1 -> Modular Addition
0x2 -> Modular Subtraction
0x3 -> Modular Multiplication (Odd N)
0x4 -> Modular Reduction (Odd N)
0x5 -> Modular Division (Odd N)
0x6 -> Modular Inversion (Odd N)
0x7 -> Reserved
0x8 -> Multiplication
0x9 -> Modular Inversion (Even N)
0xA -> Modular Reduction (Even N)
others -> Reserved
C = A + B mod N
C = A - B mod N
C = A * B mod N
C = B mod N
C = A/B mod N
C = 1/B mod N
C = A * B
C = 1/B mod N
C = B mod N
High-level RSA, CRT & DSA Operations - F(p) only
([7] forced to 0)
[6:4] = 0x1
[3:0] =
0x0 -> MulModN
0x1 -> MulAddN
0x2 -> ECMQV (part1)
others -> Reserved
Primitive ECC & Check Point Operations F(p) & F(2m)
[6:4] = 0x2
[3:0] =
0x0 -> Point Doubling (Projective Coord.)
0x1 -> ptAdd3
0x2 -> GenSessionKey
0x3 -> Check_AB (ECDSA)
0x4 -> Check_n (ECDSA)
0x5 -> Check single value less than N
0x6 -> Check_Point_On_Curve
0x7-> Reserved
0x8 -> Curve25519 point multiplication
0x9 -> Ed25519 Check point on curve
0xA -> Ed25519 ScalarMult
0xB -> Ed25519 CheckValid
others -> Reserved
(continued on next page)
6:0
R/W
ECC_TYPEOPERATI High-level ECC ECDSA Operations F(p) & F(2m)
0x0
ON
[6:4] = 0x3
(continued)
[3:0] =
0x0 -> ECMQV (part 2)
0x1 -> Verify ZKP
0x2 -> ECDSA Domain Parameters Validation
others -> Reserved
[6:4]=0x4, 0x5, 0x6, 0x7 -> Reserved
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Table 783: ECC_CONTROL_REG (0x50006008)
Bit
Mode Symbol
R/W ECC_START
Description
Reset
0
The Start signal is activated when all data and key inputs
have been loaded in the external crypto memory and are
available for processing. This signal is active high and is
sampled on the rising edge of Clk.
0x0
When this signal goes high, the PK Command present in the
PK_CommandReg[] is initiated and executed. The PK_Start
signal is ignored when the core is already processing data
and is automatically cleared when the operation is finished
Table 784: ECC_STATUS_REG (0x5000600C)
Bit
Mode Symbol
Description
Reset
16
R
ECC_BUSY
This Status Signal indicates that the core is processing data.
This signal is active high and goes low when the selected
algorithm is finished.
0x0
15:13
12
-
-
Reserved
0x0
0x0
R
ECC_PRIMALITYTE
STRESULT
After the Miller-Rabin Primality test, this flag is:
- set to 0 when the random number under test is probably
prime
- cleared to 1 when the random number under test is com-
posite
11
10
9
R
R
R
ECC_NOTINVERTIB
LE
This flag is set to 1 when executing a modular inversion
(PK_CommandReg[3:0] = 0x6 or 0x9) if the operand is not
invertible.
0x0
0x0
0x0
ECC_PARAM_AB_N
OTVALID
Status signal set to 1 when parameters A and B are not valid,
i.e 4A+ 27B = 0. This flag is updated after execution of the
command Check_AB.
ECC_SIGNATURE_
NOTVALID
This flag indicates if the signature can be accepted or must
be rejected.
This flag is set to 1 when the signature is not valid and is
updated after execution of the command
ECDSA_Generation, ECDSA_Verification, DSA_Generation,
DSA_Verification.
8
7
-
-
Reserved
0x0
0x0
R
ECC_PARAM_N_NO
TVALID
Status signal set to 1 when Parameter n is not valid.
This flag is updated after execution of the command
Check_n.
6
R
ECC_COUPLE_NOT
VALID
Status signal set to 1 when couple x, y is not valid (i.e. not
smaller than the prime).
0x0
This flag is updated after execution of the command
Check_Couple_Less_Prime.
5
4
R
R
ECC_POINT_PX_ATI Status signal set to 1 when Point Px is at the infinity.
NFINITY This flag is updated after execution of an ECC operation.
ECC_POINT_PX_NO Status signal set to 1 when Point Px is not on the defined
0x0
0x0
TONCURVE
EC. This flag is updated after execution of the command
Check_Point_OnCurve.
3:0
R
ECC_FAIL_ADDRES
S
Address of the last Point detected as Not On Curve, Not
Valid or at the infinity.
0x0
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Table 785: ECC_VERSION_REG (0x50006010)
Bit
Mode Symbol
Description
Reset
15:8
7:0
R
R
ECC_HVN
ECC_SVN
Version of IP to be read via CPU interface.
0x4
0x0
Version of Crypto code to be read via CPU interface.Note
that this should be read before ECC is used since it corrupts
its contents.
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38 Specifications
All MIN/MAX specification limits are guaranteed by design, production testing and/or statistical characterization, and
are valid over the full operating temperature range and power supply range, unless otherwise noted. Typical values
are based on characterization results at default measurement conditions and are informative only.
Default measurement conditions (unless otherwise specified): V
= V
= 3.0 V, T = 25 C. All radio measure-
BAT1
BAT2 A
ments are performed with standard RF measurement equipment providing a source/load impedance of 50 .
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Table 786: Absolute maximum ratings
Parameter
Description
Conditions
Min
Typ
Max
Unit
V
V
V
limiting voltage on a pin
default, unless other-
wise specified
-0.1
3.6
V
PIN_LIM_DEF
limiting battery supply
voltage
pin VBAT
0
0
6
V
V
BAT_LIM
limiting bus supply volt-
age
pin VBUS
6.5
BUS_LIM
t
power supply rise time
limiting voltage on a pin
limiting voltage on a pin
30
ms
V
R_SUP
V
V
V
3.3 V I/O pins
1.8 V I/O pins
QFN60 package
0
0
3.45
1.98
2000
PIN_LIM_3V3
PIN_LIM_1V8
ESD_HBM_QFN
V
electrostatic discharge
voltage (Human Body
Model)
V
60
V
electrostatic discharge
voltage (Charged Device
Model)
QFN60 package
500
150
V
ESD_CDM_QFN
60
T
storage temperature
-50
°C
STG
Table 787: Recommended operating conditions
Parameter
Description
Conditions
Min
1.7
Typ
Max
4.75
3.6
Unit
V
V
battery supply voltage
V33 rail supply voltage
pin VBAT1 and VBAT2
BAT
V
Voltage range for OTP
programming. Required
temperature for pro-
2.25
V
BAT_OTP
gramming is between -
o
o
20 C and 85 C
pin VBUS
V
V
V
bus supply voltage
voltage on a pin
4.2
0
5.75
3.3
1.8
85
V
V
BUS
3.3 V I/O pins
1.8 V I/O pins
PIN_3V3
PIN_1V8
A
voltage on a pin
0
V
T
ambient temperature
-40
°C
Table 788: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
I
I
battery supply current
CPU is idle (Wait for
0.6
mA
BAT_IDLE
Interrupt - WFI); sys_clk
= 16 MHz; pclk = 2 MHz;
DC-DC on; FLASH off;
peripherals on; V
= 3
BAT
V.
battery supply current
CPU is executing code
from 32 kB RAM; sys_clk
= 16 MHz; pclk=2 MHz;
DC-DC on; FLASH off;
1.4
mA
BAT_RUN_16MHz
peripherals on; V
= 3
BAT
V.
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Table 788: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
I
I
I
battery supply current
CPU is executing code
from 32 kB RAM; sys_clk
= 48 MHz; pclk = 2 MHz;
DC-DC on; FLASH off.
PLL on; peripherals on;
3.9
mA
BAT_RUN_48MHz
BAT_RUN_96MHz
BAT_HIBERN
V
= 3 V.
BAT
battery supply current
battery supply current
CPU is executing code
from 32 kB RAM; sys_clk
= 96 MHz; pclk = 2 MHz;
DC-DC on; FLASH off;
PLL on; peripherals on;
6.2
1.3
mA
V
= 3 V.
BAT
Hibernation mode; no
RAM retained; RCX
A
clock on; VBAT_RET on;
DC-DC off; V
=
DD_RET
0.9 V; FLASH off; V
3 V.
=
BAT
I
I
battery supply current
battery supply current
battery supply current
Deep Sleep mode; 8 kB
RAM retained; RCX
clock on; VBAT_RET on;
1.5
1.9
2.6
A
A
A
BAT_DP_SLP_8K
BAT_DP_SLP_24
DC-DC off; V
=
DD_RET
0.9 V; FLASH off; V
3 V.
=
BAT
Deep Sleep mode; 24 kB
RAM retained; aRCX
clock on; VBAT_RET on;
K
DC-DC off; V
=
DD_RET
0.9 V; FLASH off; V
3 V.
=
BAT
I
Extended Sleep mode;
BAT_EX_SLP_16
16 kB (code) and 32 kB
(data) RAM retained;
K_32K_FP
XTAL32K on; DC-DC off;
V
= 0.9 V; FLASH
DD_RET
in Power Down mode;
= 3 V.
V
BAT
I
battery supply current
Extended Sleep mode;
16 kB cache and 128 kB
(data) RAM retained;
4.6
A
BAT_EX_SLP_16
K_128K_FP
XTAL32K on; DC-DC off;
V
= 0.9 V; FLASH
DD_RET
in Power Down mode;
= 3 V.
V
BAT
I
battery supply current
battery supply current
BLE receive mode; f
= 16 MHz; DC-DC on;
FLASH in Standby
5.8
5.9
mA
mA
BAT_BLE_RX_16
CLK
M_FS
mode; V = 3 V.
BAT
I
BLE transmit mode; f
BAT_BLE_TX_16
CLK
= 16 MHz; DC-DC on;
FLASH in Standby
M_FS
mode; V
= 3 V.
BAT
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Table 788: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
I
battery supply current
BLE receive mode; f
= 96 MHz; DC-DC on;
FLASH in Standby
8.5
mA
BAT_BLE_RX_96
M_FS
CLK
mode; V
= 3 V.
BAT
I
battery supply current
BLE transmit mode; f
8.1
mA
BAT_BLE_TX_96
CLK
= 96 MHz; DC-DC on;
FLASH in Standby
M_FS
mode; V
= 3 V.
BAT
Table 789: Timing characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
t
supply startup time
time from power-on reset
or wake-up to BootROM/
application execution
start
2000
s
STA_SUP
t
booter startup time
BootROM code execu-
tion time
20
ms
STA_BOOT
t
t
cache line fetch time
cache line fetch time
from OTP; line size = 8 B
6
clock
clock
CLF_OTP
CLF_FLA
from FLASH; line size =
8 B
40
Table 790: Thermal characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
R
Device thermal resist-
aQFN60 package; Non-
56.9
°C/W
TH_J-A_sPCB
ance junction to ambient standard PCB; Zero
number of thermal vias
(worst case);
R
Device thermal resist-
aQFN60 package;
40
°C/W
TH_J-A_jPCB
ance junction to ambient JEDEC standard PCB;
Zero number of thermal
vias (worst case);
Table 791: 16 MHz Crystal Oscillator: Recommended operating conditions
Parameter
(16M)
Description
Conditions
Min
Typ
Max
Unit
f
crystal oscillator fre-
quency
16
MHz
XTAL
ESR(16M)
C (16M)
equivalent series resist-
ance
100
12
5
pF
load capacitance
No external capacitors
are required.
6
10
L
C (16M)
shunt capacitance
No external capacitors
are required.
pF
0
f
(16M)
crystal frequency toler-
ance
After optional trimming;
including aging and tem-
perature drift
-20
20
ppm
XTAL
(Note 21)
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Table 791: 16 MHz Crystal Oscillator: Recommended operating conditions
Parameter
Description
Conditions
Min
Typ
Max
Unit
f
crystal frequency toler-
ance
Untrimmed; including
aging and temperature
drift
-40
40
ppm
X-
(16M)UNT
TAL
(Note 22)
P
)
(16M maximum drive power
(16M) external clock voltage
(Note 23)
100
1
W
DRV(MAX)
V
In case of external clock
source on XTAL16Mp
(XTAL16Mm floating or
connected to mid-level
0.6 V)
1.2
1.26
-130
V
CLK(EXT)
(EXTER-
phase noise
f
= 50 kHz; in case of
C
dBc/
Hz
N
NAL)16M
external clock source
Note 21: Using the internal varicaps a wide range of crystals can be trimmed to the required tolerance.
Note 22: Maximum allowed frequency tolerance for compensation by the internal varicap trimming mechanism.
Note 23: Select a crystal which can handle a drive level of at least this specification.
Table 792: 16 MHz Crystal Oscillator: Timing characteristics
Parameter
Description
Conditions
ESR=25 Ohm; C =3 pF;
Min
Typ
Max
Unit
t
(16M) crystal oscillator startup
time
0.5
2
3
ms
STA(XTAL)
0
Table 793: 32 kHz Crystal Oscillator: Recommended operating conditions
Parameter
Description
Conditions
Min
Typ
Max
Unit
f
external clock frequency at pin XTAL32KP/P2_0
in GPIO mode
31
33
kHz
CLK_EXT_32K
V
external clock voltage
at pin XTAL32KP/P2_0
in GPIO mode
1
1.2
1.26
V
CLK_EXT_32K
f
crystal oscillator fre-
quency
32.768
kHz
k
pF
XTAL_32K
ESR
equivalent series resist-
ance
100
9
32K
C
load capacitance
No external capacitors
are required for a 6 pF or
7 pF crystal.
6
7
1
L_32K
C
shunt capacitance
2
pF
0_32K
f
crystal frequency toler-
ance (including aging)
Timing accuracy is domi-
nated by crystal accu-
racy. A much smaller
value is preferred.
-250
0.1
250
ppm
XTAL_32K
P
maximum drive power
(Note 24)
W
DRV_MAX_32K
Note 24: Select a crystal that can handle a drive level of at least this specification.
Table 794: 32 kHz Crystal Oscillator: Timing characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
t
crystal oscillator startup
time
Typical application, time
until 1000 clocks are
detected.
400
ms
STA_XTAL_32K
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Table 795: 16 MHz RC Oscillator: AC characteristics
Parameter
Description
Conditions
Min
6
Typ
Max
19
Unit
MHz
ppm
f
f
clock frequency
frequency tolerance
CLK
TOL
after calibration
-93750
93750
Table 796: 16 MHz RC Oscillator: Timing characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
t
startup time
5
s
STA
Table 797: Stable low frequency RCX Oscillator: Timing characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
f /T
RCX oscillator fre-
quency variation versus applied
temperature
preferred settings
-100
100
ppm/
deg
RC
_RCX
f
RCX oscillator frequency preferred settings
applied
8
11.7
15
kHz
RC_RCX
Table 798: Low Power PLL: AC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
f
output frequency
96
MHz
O_LPPLL
Table 799: Low Power PLL: Timing characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
t
frequency settling time
1 % accuracy after VCO
calibration
20
s
LOCK_LPPLL_1
t
frequency settling time
200 ppm accuracy
33
100
s
LOCK_LPPLL_2
Table 800: LDO_VBAT: Recommended operating conditions
Parameter
Description
Conditions
Min
Typ
Max
100
100
100
Unit
mA
F
I
load current
L_LDO_VBAT
C
load capacitance
1
0
L_LDO_VBAT
ESR
equivalent series resist-
ance
m
CL_LDO_VB
AT
Table 801: LDO_VBAT: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
mA
V
I
clamping load current
LDO output voltage
output short-circuited
during startup
160
LK_LDO_VBAT
V
3.3
LDO_VBAT_STA
RT
V
V
LDO output voltage
LDO output voltage
LDO_3V3_LEVEL = 0x0
no load
2.28
3.13
2.4
3.3
2.52
3.46
V
V
LDO_VBAT_0
LDO_3V3_LEVEL = 0x1
no load
LDO_VBAT_1
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Table 801: LDO_VBAT: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
V
LDO output voltage
LDO_3V3_LEVEL = 0x2
no load
3.27
3.45
3.62
V
LDO_VBAT_2
V
LDO output voltage
line regulation
LDO_3V3_LEVEL = 0x3
no load
3.42
3.6
3.78
0.2
V
LDO_VBAT_3
V /
V (V + 200 mV)
0.06
%/V
O
i
o
V
I_LDO_VBAT
V /
load regulation
dropout voltage
10 mA < I
< 100 mA
load
0.022
%/mA
O
I
L_LDO_VBAT
V
V
I = 1 mA
100
200
mV
mV
DROP_VBAT
L
maximum dropout volt-
age
I = 110 mA
L
DROP_VBAT_M
AX
Table 802: LDO_IO: Recommended operating conditions
Parameter
Description
Conditions
Min
Typ
Max
75
Unit
mA
F
I
load current
L_LDO_IO
C
load capacitance
1
0
10
100
100
L_LDO_IO
ESR
equivalent series resist-
ance
m
CL_LDO_IO
Table 803: LDO_IO: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
1.86
0.03
0.5
Unit
V
V
LDO output voltage
load regulation
line regulation
1.745
1.8
LDO_IO
V /I
7.5 mA I 75 mA
%/mA
%/V
O
L_LDO_IO
L
V /
V > (V + 0.2V)
O
i
o
V
I_LDO_IO
V
dropout voltage
I = 1 mA
100
200
mV
mV
DROP_IO
DROP_IO_MAX
L
V
maximum dropout volt-
age
I = 75 mA
L
Table 804: LDO_VBAT_RET: Recommended operating conditions
Parameter
Description
Conditions
Min
Typ
Max
Unit
I
load current
3
mA
L_LDO_VBAT_RE
T
Table 805: LDO_VBAT_RET: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
V
LDO output voltage
LDO_3V3_LEVEL = 0x0
2.28
2.4
2.52
V
LDO_VBAT_RET
_0
V
LDO output voltage
LDO output voltage
LDO_3V3_LEVEL = 0x1
LDO_3V3_LEVEL = 0x2
3.13
3.27
3.3
3.46
3.62
V
V
LDO_VBAT_RET
_1
V
3.45
LDO_VBAT_RET
_2
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Table 805: LDO_VBAT_RET: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
V
LDO output voltage
LDO_3V3_LEVEL = 0x3
3.42
3.6
3.78
V
LDO_VBAT_RET
_3
V /
load regulation
0.3 mA < I
< 3 mA
load
0.5
%/mA
O
I
L_LDO_VBAT_R
ET
Table 806: LDO_IO_RET: Recommended operating conditions
Parameter
Description
Conditions
Min
Typ
Max
Unit
I
load current
3
mA
L_LDO_IO_RET
Table 807: LDO_IO_RET: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
V
LDO output voltage
LDO_3V3_LEVEL = 0x0
1.71
1.8
1.89
V
LDO_VBAT_IO_
RET_0
V /I
load regulation
0.3 mA < Iload < 3 mA
1
%/mA
O
L_LDO_IO
Table 808: LDO_IO_RET2: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
V
LDO output voltage
1.71
1.8
1.89
V
LDO_VBAT_IO_
RET_0
V /I
load regulation
0.3 mA < Iload < 3 mA
1
%/mA
O
L_LDO_IO
Table 809: LDO_USB: Recommended operating conditions
Parameter
Description
Conditions
Min
Typ
Max
100
100
100
Unit
mA
F
I
load current
L_LDO_USB
C
load capacitance
1
0
L_LDO_USB
ESR
equivalent series resist-
ance
m
CL_LDO_US
B
Table 810: LDO_USB: DC characteristics
Parameter
Description
Conditions
Min
Typ
160
2.4
Max
Unit
mA
V
I
clamping load current
LDO output voltage
LDO output voltage
LDO output voltage
LDO output voltage
load regulation
output short-circuited
LDO_USB_LEVEL = 0x0
LDO_USB_LEVEL = 0x1
LDO_USB_LEVEL = 0x2
LDO_USB_LEVEL = 0x3
LK_LDO_USB
V
V
V
V
2.28
3.13
3.27
3.42
2.52
3.46
3.62
3.78
0.022
LDO_USB_0
LDO_USB_1
LDO_USB_2
LDO_USB_3
3.3
V
3.45
3.6
V
V
V /
10 mA I 100 mA
%/mA
O
L
I
L_LDO_USB
V /
line regulation
Vi >= Vo + 400mV
0.2
%/V
O
V
I_LDO_USB
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Table 811: SIMO DC-DC converter: Recommended operating conditions
Parameter
Description
load current
load current
Conditions
Min
Typ
Max
75
Unit
mA
I
I
L_1V8
75
mA
L_1V8P
Table 812: SIMO DC-DC converter: DC characteristics
Parameter
Description
output voltage
ripple voltage
Conditions
Min
Typ
1.8
60
Max
1.9
Unit
V
V
pin VDD1V8
1.7
O_1V8
V
peak-to-peak value.
Using 10 uF, 16 V, X5R
capacitors
110
mV
RPL_1V8
V
voltage accuracy
maximum error on aver-
age level
6
%
ACC_V18
V
V
output voltage
ripple voltage
pin VDD1V8P
1.7
1.8
60
1.9
V
O_1V8P
peak-to-peak value.
Using 10 uF, 16 V, X5R
capacitors
110
mV
RPL_1V8P
V
voltage accuracy
maximum error on aver-
age level
6
%
ACC_1V8P
Table 813: Brownout Detection: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
V
V
V
reset voltage
pin V12; BOD_VDD_LVL
= 0x1
0.65
0.7
0.75
V
RST_1V2_1
RST_1V2_3
RST_1V2_7
reset voltage
reset voltage
pin V12; BOD_VDD_LVL
= 0x3
0.75
0.8
0.85
V
V
pin V12; BOD_VDD_LVL
= 0x7
1.005
1.05
1.095
V
V
V
reset voltage
reset voltage
pins VDD1V8, VDD1V8P
pin V33
1.585
2.6
1.65
2.7
1.715
2.8
V
V
V
RST_1V8
RST_3V3
TH_LDO
threshold voltage below pin VBAT1
which DC-DC converter
is stopped and LDO is
active
2.35
2.45
2.55
Table 814: Charger: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
I
I
I
I
charge current
CHARGER_CTRL1_RE
G[CHARGE_CUR] = 0x0
(Note 25)
5
5.75
mA
CHARGE_0
CHARGE_1
CHARGE_2
CHARGE_3
charge current
charge current
charge current
CHARGER_CTRL1_RE
G[CHARGE_CUR] = 0x1
(Note 25)
10
30
45
11.5
34.5
mA
mA
mA
CHARGER_CTRL1_RE
G[CHARGE_CUR] = 0x2
(Note 25)
27
CHARGER_CTRL1_RE
G[CHARGE_CUR] = 0x3
(Note 25)
40.5
51.75
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Table 814: Charger: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
I
I
I
I
I
I
I
charge current
CHARGER_CTRL1_RE
G[CHARGE_CUR] = 0x4
(Note 25)
54
60
69
mA
CHARGE_4
CHARGE_5
CHARGE_6
CHARGE_7
CHARGE_8
CHARGE_9
CHARGE_10
charge current
charge current
charge current
charge current
charge current
charge current
CHARGER_CTRL1_RE
G[CHARGE_CUR] = 0x5
(Note 25)
81
90
103.5
138
mA
mA
mA
mA
mA
mA
CHARGER_CTRL1_RE
G[CHARGE_CUR] = 0x6
(Note 25)
108
135
162
189
243
120
150
180
210
270
CHARGER_CTRL1_RE
G[CHARGE_CUR] = 0x7
(Note 25)
172.5
207
CHARGER_CTRL1_RE
G[CHARGE_CUR] = 0x8
(Note 25)
CHARGER_CTRL1_RE
G[CHARGE_CUR] = 0x9
(Note 25)
241.5
310.5
CHARGER_CTRL1_RE
G[CHARGE_CUR] =
0xA
(Note 25)
I
I
I
charge current
charge current
charge current
CHARGER_CTRL1_RE
G[CHARGE_CUR] =
0xB
270
315
360
300
350
400
345
402.5
460
mA
mA
mA
CHARGE_11
CHARGE_12
CHARGE_13
(Note 25)
CHARGER_CTRL1_RE
G[CHARGE_CUR] =
0xC
(Note 25)
CHARGER_CTRL1_RE
G[CHARGE_CUR] =
0xD
(Note 25)
NTCR
NTCR
NTC to VDD_USB volt-
age ratio threshold
83
45
87.5
50
3
92
55
%
%
V
TH_COLD
NTC to VDD_USB volt-
age ratio threshold
TH_HOT
V
V
V
V
V
charge voltage 00000b
charge voltage 00001b
charge voltage 00010b
charge voltage 00011b
charge voltage 00100b
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x00
2.91
3.09
CHARGE_0
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x01
3.298
3.395
3.492
3.628
3.4
3.5
3.502
3.605
3.708
3.852
V
V
V
V
CHARGE_1
CHARGE_2
CHARGE_3
CHARGE_4
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x02
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x03
3.6
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x04
3.74
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Table 814: Charger: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
V
V
V
V
V
V
V
V
V
V
V
V
V
V
charge voltage 00101b
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x05
3.744
3.86
3.976
V
CHARGE_5
CHARGE_6
CHARGE_7
CHARGE_8
CHARGE_9
CHARGE_10
CHARGE_11
CHARGE_12
CHARGE_13
CHARGE_14
CHARGE_15
CHARGE_16
CHARGE_17
CHARGE_18
charge voltage 00110b
charge voltage 00111b
charge voltage 01000b
charge voltage 01001b
charge voltage 01010b
charge voltage 01011b
charge voltage 01100b
charge voltage 01101b
charge voltage 01110b
charge voltage 01111b
charge voltage 10000b
charge voltage 10001b
charge voltage 10010b
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x06
3.88
3.929
3.977
4.026
4.074
4.123
4.171
4.22
4
4.12
4.172
4.223
4.275
4.326
4.378
4.429
4.481
4.532
4.635
4.738
5.047
5.15
V
V
V
V
V
V
V
V
V
V
V
V
V
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x07
4.05
4.1
4.15
4.2
4.25
4.3
4.35
4.4
4.5
4.6
4.9
5
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x08
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x09
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x0A
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x0B
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x0C
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x0D
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x0E
4.268
4.365
4.462
4.753
4.85
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x0F
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x10
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x11
CHARGER_CTRL1_RE
G[CHARGE_LEVEL] =
0x12
Note 25: minimum allowed charging temperature is -5 oC.
Table 815: Temperature Sensor: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
T
sense temperature
Measured with on chip
ADC
-20
110
°C
SENSE
T
sense temperature accu- Single point calibration at
8.8
°C
SENSE_ACC
o
racy
25 C
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Table 816: Fuel Gauge (SOC): DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
mV
%
V
full-scale input voltage
75
I_FS
SOC
state of charge integral
non-linearity
R = 0.1 ; 1 mA
SENSE
0.05
INL
I
1000 mA
SENSE
Table 817: General Purpose ADC: Recommended operating conditions
Parameter
Description
Conditions
Min
Typ
Max
Unit
ENOB(AVG16) Effective Number of Bits Averaging 16 times;
10.5
bits
GP_ADC_CTRL_REG=
0x4C01;
GP_ADC_CTRL2_REG
=0x0008;
GP_ADC_OFFP_REG=
0x0200;
GP_ADC_OFFN_REG=
0x0200;
GP_ADC_DELAY2_RE
G=0xC000;
ENOB(AVG32) Effective Number of Bits Averaging 32 times;
10.8
bits
GP_ADC_CTRL_REG=
0x4C01;
GP_ADC_CTRL2_REG
=0x0008;
GP_ADC_OFFP_REG=
0x0200;
GP_ADC_OFFN_REG=
0x0200;
GP_ADC_DELAY2_RE
G=0xC000;
ENOB(AVG64) Effective Number of Bits Averaging 64 times;
11.1
bits
GP_ADC_CTRL_REG=
0x4C01;
GP_ADC_CTRL2_REG
=0x0008;
GP_ADC_OFFP_REG=
0x0200;
GP_ADC_OFFN_REG=
0x0200;
GP_ADC_DELAY2_RE
G=0xC000;
Table 818: General Purpose ADC: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
V
V
V
zero-scale input voltage single-ended, calibrated
at zero input offset cali-
-6
6
mV
I(ZS)
brated and trimmed
bandgap
full-scale input voltage
single-ended, calibrated
at zero input offset cali-
brated and trimmed
bandgap
1150
1180
1250
mV
mV
I(FS)
negative full-scale input
voltage
differential, calibrated at
zero input
-1180
I(FSN)
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Table 818: General Purpose ADC: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
V
positive full-scale input
voltage
differential, calibrated at
zero input
1180
mV
I(FSP)
INL
integral non-linearity
GP_ADC_CTRL_REG=
0x4C01;
-2
2
LSB
GP_ADC_CTRL2_REG
=0x0008;
GP_ADC_OFFP_REG=
0x0200;
GP_ADC_OFFN_REG=
0x0200;
GP_ADC_DELAY2_RE
G=0xC000;
DNL
differential non-linearity
offset error
-2
-4
2
4
LSB
LSB
E
differential, uncali-
brated.
OFS
GP_ADC_IDYN=1 and
GP_ADC_I20U=1
E
gain error
GP_ADC_IDYN=1 and
GP_ADC_I20U=1
-32
32
LSB
G
Table 819: General Purpose ADC: Timing characteristics
Parameter
(ADC)
Description
Conditions
Min
Typ
Max
Unit
t
conversion time
Excluding initial settling
time of the LDO and the
3x-attenuation (if used):
0.25
0.4
s
CONV
LDO settling time is 20
s (max), 3x-attenuation
settling time = 1 s (max)
Using internal ADC-clock
(~200 MHz)
Table 820: LED Driver: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
I
I
I
I
I
current matching
relative to average LED
output current
0.2
2
%
MATCH_LED
O_MAX_LED0
O_MAX_LED1
O_MAX_LED2
ACC_LED0
maximum output current 200 mV saturation volt-
age and 100% duty cycle
14
14
14
-2
19
19
19
24
24
24
2
mA
mA
mA
%
maximum output current 200 mV saturation volt-
age and 100% duty cycle
maximum output current 200 mV saturation volt-
age and 100% duty cycle
current accuracy
PWM accuracy at 10%
duty cycle and above
relative to Io_max (100%
duty cycle)
I
current accuracy
PWM accuracy at 10%
duty cycle and above
relative to Io_max (100%
duty cycle)
-2
2
%
ACC_LED1
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Bluetooth Low Energy 4.2 SoC
Table 820: LED Driver: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
I
current accuracy
PWM accuracy at 10%
duty cycle and above
relative to Io_max (100%
duty cycle)
-2
2
%
ACC_LED2
I
I
I
off-state current
off-state current
off-state current
driver disabled
driver disabled
driver disabled
0.2
0.2
0.2
A
A
A
OFF_LED0
OFF_LED1
OFF_LED2
Table 821: LED Driver: AC characteristics
Parameter
Description
Conditions
Min
Typ
Typ
Max
Unit
f
PWM frequency
256
512
Hz
PWM_LED
Table 822: USB charger detect: DC characteristics
Parameter Description Conditions
Min
Max
Unit
V
V
V
V
HIGH level input voltage USB_CHARGER_CTRL
0.4
V
IH_CHG_DET
IL_CHG_DET
IH_DCP_DET
IL_DCP_DET
_REG[VDP_SRC_ON]=
1
LOW level input voltage USB_CHARGER_CTRL
0.25
V
V
V
_REG[VDP_SRC_ON]=
1
HIGH level input voltage USB_CHARGER_CTRL
0.8
_REG[VDM_SRC_ON]=
1
LOW level input voltage USB_CHARGER_CTRL
0.25
_REG[VDM_SRC_ON]=
1
V
V
V
V
V
V
V
V
V
V
I
HIGH level input voltage
LOW level input voltage
HIGH level input voltage
LOW level input voltage
HIGH level input voltage
LOW level input voltage
HIGH level input voltage
LOW level input voltage
output voltage
1.5
1.5
2.5
2.5
V
V
IH_DM_VAL
IL_DM_VAL
IH_DP_VAL
IL_DP_VAL
IH_DM_VAL2
IL_DM_VAL2
IH_DP_VAL2
IL_DP_VAL2
O_DM_SRC
O_DP_SRC
0.8
0.8
2.3
V
V
V
V
V
2.3
0.7
V
0.5
0.5
25
V
output voltage
0.7
V
D- sink current
175
175
13
A
A
A
k
DM_SINK
DP_SINK
DP_SRC
I
I
D+ sink current
25
D+ source current
5
R
D- resistance to ground
USB_CHARGER_CTRL
14.25
24.8
DM_DWN
_REG[IDP_SRC_ON] =
1
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Table 823: Digital I/O Pad: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
V
V
V
V
HIGH level input voltage
LOW level input voltage
0.84
IH
0.36
V
IL
HIGH level output volt-
age
I
= -4.8 mA, VDD1V8 =
O
1.44
1.88
V
OH_1V8
1.80 V
= 4.8 mA, VDD1V8 =
V
V
V
I
LOW level output voltage
I
0.36
V
V
OL_1V8
OH_3V3
OL_3V3
O
1.80 V
HIGH level output volt-
age
I
V
= -4.8 mA, V33 = 2.35
= 4.8 mA, V33 = 2.35
O
LOW level output voltage
I
0.47
10
V
O
V
HIGH level input current V = V33 = 3.3 V, exclud-
-10
-10
5
4
A
IH
I
ing USB pads (P11, P22)
and P21
I
LOW level input current
V = VSS = 0 V, exclud-
10
A
IL
I
ing USB pads (P11, P22)
and P21
I
I
HIGH level input current V = V33 = 3.3 V
65
200
-35
A
A
IH_PD_3V3
IL_PU_1V8
I
LOW level input current
V = VSS = 0 V, VDD1V8
-110
I
= 1.8 V
I
LOW level input current
V = VSS = 0 V, V33 =
-200
-65
A
IL_PU_3V3
I
3.3 V
SR
SR
rising slew rate
falling slew rate
input capacitance
C = 15 pF; I = 4.8 mA;
0.4
0.4
3.2
3.3
V/ns
V/ns
pF
R
L
L
C = 15 pF; IL = 4.8 mA;
F
L
C
0.75
IN
Table 824: Quad SPI Digital I/O Pad: DC characteristics
Parameter Description Conditions
Min
Typ
Max
1.04
0.48
Unit
V
V
V
V
V
V
HIGH level input voltage VDDIO = 3.45 V
LOW level input voltage VDDIO = 3.45 V
HIGH level input voltage VDDIO = 1.6 V
LOW level input voltage VDDIO = 1.6 V
2.42
IH
V
IL
1.12
V
IH_IO_1V8
IL_IO_1V8
OH_4mA
V
HIGH level output volt-
age
I
V
= 4 mA, VDDIO = 2.8
= 8 mA, VDDIO = 2.8
O
2.24
2.24
2.24
2.24
1.32
1.32
1.32
V
O
V
V
V
V
V
V
HIGH level output volt-
age
I
V
V
V
V
V
V
V
OH_8mA
HIGH level output volt-
age
I = 12 mA, VDDIO = 2.8
V
OH_12mA
O
HIGH level output volt-
age
I = 16 mA, VDDIO = 2.8
V
OH_16mA
O
HIGH level output volt-
age
I = 3 mA, VDDIO = 1.65
V
OH_1V6_4mA
OH_1V6_8mA
OH_1V6_12mA
O
HIGH level output volt-
age
I = 6 mA, VDDIO = 1.65
V
O
HIGH level output volt-
age
I = 9 mA, VDDIO = 1.65
O
V
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Table 824: Quad SPI Digital I/O Pad: DC characteristics
Parameter
Description
Conditions
= 12 mA, VDDIO =
1.65 V
Min
Typ
Max
Unit
V
V
V
V
V
V
V
V
V
V
V
I
HIGH level output volt-
age
I
1.32
V
OH_1V6_16mA
OH_3V3_100uA
OL_4mA
O
HIGH level output volt-
age
I
= 100 A, VDDIO =
3.35
V
V
O
3.45 V
LOW level output voltage
I
V
= 4 mA, VDDIO = 2.8
= 8 mA, VDDIO = 2.8
O
0.56
0.56
0.56
0.56
0.33
0.33
0.33
0.33
0.1
O
LOW level output voltage
I
V
OL_8mA
V
LOW level output voltage I = 12 mA, VDDIO = 2.8
V
OL_12mA
O
V
LOW level output voltage I = 16 mA, VDDIO = 2.8
V
OL_16mA
O
V
LOW level output voltage I = 3 mA, VDDIO = 1.65
V
OL_1V6_4mA
OL_1V6_8mA
OL_1V6_12mA
OL_1V6_16mA
OL_3V3_100uA
O
V
LOW level output voltage
LOW level output voltage
LOW level output voltage
LOW level output voltage
I
V
= 6 mA, VDDIO = 1.65
= 9 mA, VDDIO = 1.65
= 12 mA, VDDIO =
V
O
I
V
V
O
I
V
O
1.65 V
I
= 100 A, VDDIO =
V
O
3.45 V
HIGH level input current V = VDDIO, VDDIO =
-10
10
A
IH
I
3.45 V
I
I
HIGH level input current V = 1.8 V
with pull-down
25
45
75
10
A
A
IH_PD
IL
I
LOW level input current
V = VSS, VDDIO = 3.45
-10
I
V
I
LOW level input current
with pull-up
V = VSS, VDDIO = 1.8 V
-75
-45
-25
A
IL_PU
I
Table 825: Reset Pad: DC characteristics
Parameter Description
Conditions
Min
Typ
Max
Unit
V
V
V
I
HIGH level input voltage pin RST
LOW level input voltage pin RST
0.84
IH_RST
IL_RST
0.36
75
V
HIGH level input current pin RST, V = 1.2 V
25
A
IH_RST
I
Table 826: Radio - BLE mode: Recommended operating conditions
Parameter
Description
Conditions
Min
Typ
Max
Unit
MHz
1
f
operating frequency
number of channels
channel frequency
2400
2483.5
OPER
N
40
CH
f
K = 0 to 39
2402+K*2
MHz
CH
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Table 827: Radio - BLE mode: DC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
I
I
battery supply current
radio receiver and syn-
thesizer active; ideal DC-
3.1
mA
BAT_RF_RX
DC converter; T = 25
A
C
(Note 26)
battery supply current
radio transmitter and
3.4
mA
BAT_RF_TX
synthesizer active; ideal
DC-DC converter; T =
A
25 C
(Note 26)
Note 26: The DC-DC converter efficiency is assumed to be 100 % to enable benchmarking of the radio currents at battery supply domain.
Table 828: Radio - BLE mode: AC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
P
P
P
sensitivity level
Dirty Transmitter disa-
bled; DC-DC converter
disabled; PER = 30.8 %;
(Note 27)
-94
dBm
SENS_CLEAN
sensitivity level
Normal Operating Condi-
tions; DC-DC converter
disabled; PER = 30.8 %;
(Note 27)
-93.5
-31
dBm
dBm
SENS
intermodulation distor-
tion interferer power
level
worst-case interferer
-35
INT_IMD
level @ f , f with 2*f - f
1
2
1
2
= f , |f - f | = n MHz and
0
1
2
n = 3, 4, 5; P
= -
WANTED
64 dBm @ f ; PER =
0
30.8 %;
(Note 28)
CIR
CIR
carrier to interferer ratio
carrier to interferer ratio
n = 0; interferer @ f = f
+ n*1 MHz;
(Note 29)
7
13
2
dB
dB
0
1
0
n = 1; interferer @ f =
-3
1
1
f + n*1 MHz;
0
(Note 29)
CIR
carrier to interferer ratio
n = +2 (image fre-
-20
-12
dB
P2
quency); interferer @ f
1
= f + n*1 MHz;
0
(Note 29)
CIR
CIR
carrier to interferer ratio
carrier to interferer ratio
n = -2; interferer @ f =
-30
-30
-26
-19
dB
dB
M2
1
f + n*1 MHz;
0
(Note 29)
n = +3 (image frequency
P3
+ 1 MHz); interferer @ f
1
= f + n*1 MHz;
0
(Note 29)
CIR
carrier to interferer ratio
n = -3; interferer @ f =
-35
-33
dB
M3
1
f + n*1 MHz;
0
(Note 29)
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Table 828: Radio - BLE mode: AC characteristics
Parameter
Description
Conditions
Min
Typ
Max
Unit
CIR
carrier to interferer ratio
|n| 4 (any other BLE
channel); interferer @ f
-37
-33
dB
4
1
= f + n*1 MHz;
0
(Note 29)
P
blocker power level
30 MHz f 2000
-5
-5
-5
-5
dBm
dBm
dBm
dBm
BL_I
BL
MHz; P
= -67
WANTED
dBm;
(Note 30)
2003 MHz f 2399
P
blocker power level
(Note 31)
BL_II
BL
MHz; P
= -67
WANTED
dBm;
(Note 30)
2484 MHz f 2997
P
blocker power level
blocker power level
BL_III
BL
MHz; P
= -67
WANTED
dBm;
(Note 30)
3000 MHz f 12.75
P
BL_IV
BL
GHz; P
= -67
WANTED
dBm;
(Note 30)
P
P
RSSI power level
RSSI power level
level accuracy
absolute power level for
RXRSSI[7:0] = 0;
-116
-24
-114
-22
0
-112
-20
2
dBm
dBm
dB
RSSI_MIN
RSSI_MAX
ACC_RSSI
upper limit of monoto-
nous range;
L
tolerance at 5 % to 95 %
confidence interval of
P
: when RXRSSI[7:0]
RF
= X, 50 < X < 175; burst
mode, 1500 packets;
L
level resolution
gradient of monotonous
range for RXRSSI[7:0] =
X, 50 < X < 175; burst
mode, 1500 packets;
0.47
0.48
0.49
dB/
LSB
RES_RSSI
ACP
ACP
adjacent channel power
level
f
2 MHz;
OFS
-53
-57
0
dBm
dBm
2M
(Note 32)
f 3 MHz;
OFS
(Note 32)
adjacent channel power
level
3M
P
P
output power level
maximum gain;
-1
1
dBm
dBm
O
output power level (sec- maximum gain;
ond harmonic)
-41
O_H2
O_H3
O_H4
O_H5
O_NFM
P
P
P
P
output power level (third maximum gain;
harmonic)
-41
-41
-41
-15
dBm
dBm
dBm
dBm
output power level
(fourth harmonic)
maximum gain;
output power level (fifth
harmonic)
maximum gain;
output power level (Near maximum gain;
Field Mode) (Note 33)
-25
-20
Note 27: Measured according to Bluetooth® Low Energy Test Specification RF-PHY.TS/4.0.1, section 6.4.1.
Note 28: Measured according to Bluetooth® Core Technical Specification document, version 4.0, volume 6, section 4.4. Published value is for n =
IXIT = 4. IXIT = 5 gives the same results, IXIT = 3 gives results that are 5 dB lower.
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Note 29: Measured according to Bluetooth® Core Technical Specification document, version 4.0, volume 6, section 4.2.
Note 30: Measured according to Bluetooth® Core Technical Specification document, version 4.0, volume 6, section 4.3. Due to limitations of the
measurement equipment, levels of -5 dBm should be interpreted as > -5 dBm.
Note 31: Frequencies close to the ISM band can show slightly worse performance
Note 32: Measured according to Bluetooth® Low Energy Test Specification RF-PHY.TS/4.0.1, section 6.2.3.
Note 33: To activate the "Near Field Mode", program address 0x50002230, bits 9:5 with the value 0x0. To stop NFC restore previous bitfield value.
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39 Package information
39.1 MOISTURE SENSITIVITY LEVEL (MSL)
The MSL is an indicator for the maximum allowable
time period (floor life time) in which a moisture sensi-
tive plastic device, once removed from the dry bag, can
be exposed to an environment with a maximum tem-
perature of 30°C and a maximum relative humidity of
60% RH. before the solder reflow process.
WLCSP packages are qualified for MSL 1.
AQFN packages are qualified for MSL 3.
MSL Level
MSL 4
Floor Life Time
72 hours
MSL 3
168 hours
MSL 2A
MSL 2
4 weeks
1 year
MSL 1
Unlimited at 30°C/85% RH
39.2 WLCSP HANDLING
Manual handling of WLCSP packages should be
reduced to the absolute minimum. In cases where it is
still necessary, a vacuum pick-up tool should be used.
In extreme cases plastic tweezers could be used, but
metal tweezers are not acceptable, since contact may
easily damage the silicon chip.
Removal will cause damage to the solder balls and
therefore a removed sample cannot be reused.
WLCSP is sensitive to visible and infrared light. Pre-
cautions should be taken to shield the chip properly in
the final product.
39.3 SOLDERING INFORMATION
Refer to the JEDEC standard J-STD-020 for relevant
soldering information.
This document can be downloaded from http://
www.jedec.org.
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39.4 PACKAGE OUTLINES
Figure 128: AQFN60 Package Outline Drawing
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Figure 129: WLCSP53 package outline drawing
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Status definitions
Version Datasheet status
Product status
Definition
1.<n>
Target
Development
This datasheet contains the design specifications for prod-
uct development. Specifications may change in any manner
without notice.
2.<n>
Preliminary
Qualification
This datasheet contains the specifications and preliminary
characterisation data for products in pre-production. Specifi-
cations may be changed at any time without notice in order
to improve the design.
3.<n>
4.<n>
Final
Production
Archived
This datasheet contains the final specifications for products
in volume production. The specifications may be changed
at any time in order to improve the design, manufacturing
and supply. Relevant changes will be communicated via
Customer Product Notifications.
Obsolete
This datasheet contains the specifications for discontinued
products. The information is provided for reference only.
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