ISP1362EE-T [NXP]
Single-chip Universal Serial Bus On-The-Go Controller - Application: PDA, mobile phone, DSC, Web appliance, digital audio jukebox, printer ; Bus interface: USB at FS (12 Mbit/s) and LS (1.5 Mbit/s) data rates ; Features: built-in charge pump for VBUS generation; optional support for external VBUS source; adjustable VBUS output current with external capacitor ; Operating/supply voltage (MAX.-Vcc,Vp,VDD): core 3.3 V; single supply 3.0 V to 3.6 V V;型号: | ISP1362EE-T |
厂家: | NXP |
描述: | Single-chip Universal Serial Bus On-The-Go Controller - Application: PDA, mobile phone, DSC, Web appliance, digital audio jukebox, printer ; Bus interface: USB at FS (12 Mbit/s) and LS (1.5 Mbit/s) data rates ; Features: built-in charge pump for VBUS generation; optional support for external VBUS source; adjustable VBUS output current with external capacitor ; Operating/supply voltage (MAX.-Vcc,Vp,VDD): core 3.3 V; single supply 3.0 V to 3.6 V V 光电二极管 |
文件: | 总152页 (文件大小:677K) |
中文: | 中文翻译 | 下载: | 下载PDF数据表文档文件 |
ISP1362
Single-chip Universal Serial Bus On-The-Go Controller
Rev. 05 — 8 May 2007
Product data sheet
1. General description
The ISP1362 is a single-chip Universal Serial Bus (USB) On-The-Go (OTG) controller
integrated with the advanced NXP Slave Host Controller and the NXP ISP1181B
Peripheral Controller. The USB OTG Controller is compliant with Ref. 1 “On-The-Go
Supplement to the USB 2.0 Specification Rev. 1.0a”. The Host and Peripheral Controllers
are compliant with Ref. 2 “Universal Serial Bus Specification Rev. 2.0” (full-speed and
low-speed support only), supporting data transfer at full-speed (12 Mbit/s) and low-speed
(1.5 Mbit/s).
The ISP1362 has two USB ports: port 1 and port 2. Port 1 can be hardware configured to
function as a downstream port, an upstream port or an OTG port whereas port 2 can only
be used as a downstream port. The OTG port can switch roles from host to peripheral, or
from peripheral to host. The OTG port can become a host through Host Negotiation
Protocol (HNP) as specified in the OTG supplement.
A USB product with OTG capability can function either as a host or as a peripheral. For
instance, with this dual-role capability, a PC peripheral such as a printer may switch roles
from a peripheral to a host for connecting to a digital camera so that the printer can print
pictures taken by the camera without using a PC. When a USB product with OTG
capability is inactive, the USB interface is turned off. This feature has made OTG a
technology well-suited for use in portable devices, such as, Personal Digital Assistant
(PDA), Digital Still Camera (DSC) and mobile phone, in which power consumption is a
concern. The ISP1362 is an OTG Controller designed to perform such functions.
2. Features
I Complies fully with:
N Ref. 2 “Universal Serial Bus Specification Rev. 2.0”
N Ref. 1 “On-The-Go Supplement to the USB 2.0 Specification Rev. 1.0a”
I Supports data transfer at full-speed (12 Mbit/s) and low-speed (1.5 Mbit/s)
I Adapted from Ref. 4 “Open Host Controller Interface Specification for USB
Release 1.0a”
I USB OTG:
N Supports Host Negotiation Protocol (HNP) and Session Request Protocol (SRP)
for OTG dual-role devices
N Provides status and control signals for software implementation of HNP and SRP
N Provides programmable timers required for HNP and SRP
N Supports built-in and external source of VBUS
N Output current of the built-in charge pump is adjustable by using an external
capacitor
I
USB host:
ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
N Supports integrated physical 4096 bytes of multiconfiguration memory
N Supports all four types of USB transfers: control, bulk, interrupt and isochronous
N Supports multiframe buffering for isochronous transfer
N Supports automatic interrupt polling rate mechanism
N Supports paired buffering for bulk transfer
N Directly addressable memory architecture; memory can be updated on-the-fly
I USB device:
N Supports high performance USB interface device with integrated Serial Interface
Engine (SIE), buffer memory and transceiver
N Supports fully autonomous and multiconfiguration Direct Memory Access (DMA)
operation
N Supports up to 14 programmable USB endpoints with two fixed control IN/OUT
endpoints
N Supports integrated physical 2462 bytes of multiconfiguration memory
N Supports endpoints with double buffering to increase throughput and ease
real-time data transfer
N Supports controllable LazyClock (110 kHz ± 50 %) output during ‘suspend’
I Supports two USB ports: port 1 and port 2
N Port 1 can be configured to function as a downstream port, an upstream port or an
OTG port
N Port 2 can be used only as a downstream port
I Supports software-controlled connection to the USB bus (SoftConnect)
I Supports good USB connection indicator that blinks with traffic (GoodLink)
I Complies with USB power management requirements
I Supports internal power-on and low-voltage reset circuit, with possibility of a software
reset
I High-speed parallel interface to most CPUs available in the market, such as Hitachi
SH-3, Intel StrongARM, NXP XA, Fujitsu SPARClite, NEC and Toshiba MIPS, ARM7/9,
Freescale DragonBall and PowerPC Reduced Instruction Set Computer (RISC):
N 16-bit data bus
N 10 MB/s data transfer rate between the microprocessor and the ISP1362
I Supports Programmed I/O (PIO) or DMA
I Supports ‘suspend’ and remote wake-up
I Uses 12 MHz crystal or direct clock source with on-chip Phase-Locked Loop (PLL) for
low ElectroMagnetic Interference (EMI)
I Operates at 3.3 V power supply
I Operating temperature range from −40 °C to +85 °C
I Available in 64-pin LQFP and TFBGA packages
3. Applications
The ISP1362 can be used to implement a dual-role USB device in any application, USB
host or USB peripheral, depending on the cable connection. If the dual-role device is
connected to a typical USB peripheral, it behaves like a typical USB host. The dual-role
device, however, can also be connected to a PC or any other USB host and behave like a
typical USB peripheral.
ISP1362_5
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
2 of 152
ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
3.1 Host/peripheral roles
I Mobile phone to/from:
N Mobile phone: exchange contact information
N Digital still camera: e-mail pictures or upload pictures to the web
N MP3 player: upload, download and broadcast music
N Mass storage: upload and download files
N Scanner: scan business cards
I Digital still camera to/from:
N Digital still camera: exchange pictures
N Mobile phone: e-mail pictures, upload pictures to the web
N Printer: print pictures
N Mass storage: store pictures
I Printer to/from:
N Digital still camera: print pictures
N Scanner: print scanned image
N Mass storage: print files stored in a device
I MP3 player to/from:
N MP3 player: exchange songs
N Mass storage: upload and download songs
I Oscilloscope to/from:
N Printer: print screen image
I Personal digital assistant to/from:
N Personal digital assistant: exchange files
N Printer: print files
N Mobile phone: upload and download files
N MP3 player: upload and download songs
N Scanner: scan pictures
N Mass storage: upload and download files
N Global Positioning System (GPS): obtain directions, mapping information
N Digital still camera: upload pictures
N Oscilloscope: configure oscilloscope
ISP1362_5
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
3 of 152
ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
4. Ordering information
Table 1.
Ordering information
Type number
Package
Name
Description
plastic low profile quad flat package; 64 leads; body 10 × 10 × 1.4 mm
Version
ISP1362BD
ISP1362EE
LQFP64
TFBGA64
SOT314-2
plastic thin fine-pitch ball grid array package; 64 balls; body 6 × 6 × 0.8 mm SOT543-1
ISP1362_5
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
4 of 152
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12 MHz
CLKOUT
X2
44
X1
43
38
32
33
internal
reset
POWER-ON
RESET
HOST CONTROLLER
BUFFER MEMORY
RESET
PLL
ISP1362
H_SUSPEND/
H_WAKEUP
to system clock
2, 3,
56
35
36
42
41
V
DD(5V)
5 to 8,
ADVANCED NXP
SLAVE HOST
CONTROLLER
10 to 13,
15 to 18,
63, 64
H_PSW1
H_PSW2
H_OC1
OVERCURRENT
PROTECTION
16
D[15:0]
H_OC2
20
21
22
61
62
28
29
24
25
30
31
RD
CS
46
47
H_DM2
H_DP2
USB
TRANSCEIVER
WR
ON-THE-GO
CONTROLLER
BUS
INTERFACE
A0
A1
DACK1
DACK2
DREQ1
DREQ2
INT1
49
50
OTG_DM1
OTG_DP1
OTG
TRANSCEIVER
NXP
PERIPHERAL
CONTROLLER
INT2
CHARGE
PUMP
55
V
BUS
23
59
60
TEST0
TEST1
TEST2
PERIPHERAL
CONTROLLER
BUFFER
MEMORY
GOODLINK
39
1, 9, 19, 27,
37, 57
4, 14, 26,
40, 52, 58
51
34
45
48
54
53
004aaa044
DGND
AGND V
D_SUSPEND/
D_WAKEUP
GL
ID CP_CAP2 CP_CAP1
OTGMODE
CC
The figure shows the LQFP pinout. For the TFBGA ballout, see Table 2.
Fig 1. Block diagram
ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
6. Pinning information
6.1 Pinning
1
2
48
47
46
45
44
43
42
41
40
39
38
37
36
35
34
33
DGND
D2
ID
H_DP2
H_DM2
OTGMODE
X2
3
D3
4
V
CC
5
D4
D5
6
X1
7
D6
H_OC1
H_OC2
8
D7
ISP1362BD
9
DGND
D8
V
CC
10
11
12
13
14
15
16
GL
D9
CLKOUT
D10
D11
DGND
H_PWS2
V
CC
H_PWS1
D12
D13
D_SUSPEND/D_WAKEUP
H_SUSPEND/H_WAKEUP
004aaa050
Fig 2. Pin configuration LQFP64
ball A1
index area
1 2 3 4 5 6 7 8 9 10
A
B
C
D
E
F
ISP1362EE
G
H
J
K
004aaa151
Transparent top view
Fig 3. Pin configuration TFBGA64
ISP1362_5
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
6 of 152
ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
6.2 Pin description
Table 2.
Pin description
Symbol[1]
Pin
Type
Description
LQFP64 TFBGA64
DGND
D2
1
2
B1
C2
-
digital ground
I/O
bit 2 of the bidirectional data bus that connects to the internal registers
and buffer memory of the ISP1362; the bus is in the high-impedance
state when it is idle
bidirectional, push-pull input, 3-state output
D3
3
C1
I/O
bit 3 of the bidirectional data bus that connects to the internal registers
and buffer memory of the ISP1362; the bus is in the high-impedance
state when it is idle
bidirectional, push-pull input, 3-state output
VCC
D4
4
5
D2
D1
-
supply voltage (3.3 V); it is recommended that you connect a decoupling
capacitor of 0.01 µF
I/O
bit 4 of the bidirectional data bus that connects to the internal registers
and buffer memory of the ISP1362; the bus is in the high-impedance
state when it is idle
bidirectional, push-pull input, 3-state output
D5
D6
D7
6
7
8
E2
E1
F2
I/O
I/O
I/O
bit 5 of the bidirectional data bus that connects to the internal registers
and buffer memory of the ISP1362; the bus is in the high-impedance
state when it is idle
bidirectional, push-pull input, 3-state output
bit 6 of the bidirectional data bus that connects to the internal registers
and buffer memory of the ISP1362; the bus is in the high-impedance
state when it is idle
bidirectional, push-pull input, 3-state output
bit 7 of the bidirectional data bus that connects to the internal registers
and buffer memory of the ISP1362; the bus is in the high-impedance
state when it is idle
bidirectional, push-pull input, 3-state output
digital ground
DGND
D8
9
F1
-
10
G2
I/O
bit 8 of the bidirectional data bus that connects to the internal registers
and buffer memory of the ISP1362; the bus is in the high-impedance
state when it is idle
bidirectional, push-pull input, 3-state output
D9
11
12
13
G1
H2
H1
I/O
I/O
I/O
bit 9 of the bidirectional data bus that connects to the internal registers
and buffer memory of the ISP1362; the bus is in the high-impedance
state when it is idle
bidirectional, push-pull input, 3-state output
D10
D11
bit 10 of the bidirectional data bus that connects to the internal registers
and buffer memory of the ISP1362; the bus is in the high-impedance
state when it is idle
bidirectional, push-pull input, 3-state output
bit 11 of the bidirectional data bus that connects to the internal registers
and buffer memory of the ISP1362; the bus is in the high-impedance
state when it is idle
bidirectional, push-pull input, 3-state output
ISP1362_5
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
7 of 152
ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
Table 2.
Pin description …continued
Symbol[1]
Pin
Type
Description
LQFP64 TFBGA64
VCC
D12
14
J2
-
supply voltage (3.3 V); it is recommended that you connect a decoupling
capacitor of 0.01 µF
15
J1
I/O
bit 12 of the bidirectional data bus that connects to the internal registers
and buffer memory of the ISP1362; the bus is in the high-impedance
state when it is idle
bidirectional, push-pull input, 3-state output
D13
D14
D15
16
17
18
K1
K2
J3
I/O
I/O
I/O
bit 13 of the bidirectional data bus that connects to the internal registers
and buffer memory of the ISP1362; the bus is in the high-impedance
state when it is idle
bidirectional, push-pull input, 3-state output
bit 14 of the bidirectional data bus that connects to the internal registers
and buffer memory of the ISP1362; the bus is in the high-impedance
state when it is idle
bidirectional, push-pull input, 3-state output
bit 15 of the bidirectional data bus that connects to the internal registers
and buffer memory of the ISP1362; the bus is in the high-impedance
state when it is idle
bidirectional, push-pull input, 3-state output
digital ground
DGND
RD
19
20
K3
J4
-
I
read strobe input; when asserted LOW, it indicates that the Host
Controller/Peripheral Controller driver is requesting a read to the buffer
memory or the internal registers of the Host Controller/Peripheral
Controller
input with hysteresis
CS
21
22
K4
J5
I
I
chip select input (active LOW); enables the Host Controller/Peripheral
Controller driver to access the buffer memory and registers of the Host
Controller/Peripheral Controller
input
WR
write strobe input; when asserted LOW, it indicates that the Host
Controller/Peripheral Controller driver is requesting a write to the buffer
memory or the internal registers of the Host Controller/Peripheral
Controller
input with hysteresis
TEST0
23
24
K5
J6
I/O
O
for test input and output; pulled HIGH by a 100 kΩ resistor
bidirectional, push-pull input, 3-state output
DREQ1
DMA request output; when active, it signals the DMA controller that a
data transfer is requested by the Host Controller; the active level (HIGH
or LOW) of the request is programmed by using the
HcHardwareConfiguration register (20h/A0h)
If the OneDMA bit of the HcHardwareConfiguration register is set to
logic 1, both the Host Controller and the Peripheral Controller DMA
channel will be routed to DREQ1 and DACK1.
push-pull output
ISP1362_5
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
8 of 152
ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
Table 2.
Pin description …continued
Symbol[1]
Pin
Type
Description
LQFP64 TFBGA64
DREQ2
25
K6
O
DMA request output; when active, it signals the DMA controller that a
data transfer is requested by the Peripheral Controller; the active level
(HIGH or LOW) of the request is programmed by using the
DcHardwareConfiguration register (BAh/BBh)
push-pull output
VCC
26
J7
-
supply voltage (3.3 V); it is recommended that you connect a decoupling
capacitor of 0.01 µF
DGND
27
28
K7
J8
-
I
digital ground
DACK1
DMA acknowledge input; indicates that a request for DMA transfer from
the Host Controller has been granted by the DMA controller; the active
level (HIGH or LOW) of the acknowledge signal is programmed by using
the HcHardwareConfiguration register (20h/A0h); when not in use, this
pin must be connected to VCC through a 10 kΩ resistor
input with hysteresis
DACK2
INT1
29
30
K8
J9
I
DMA acknowledge input; indicates that a request for DMA transfer from
the Peripheral Controller has been granted by the DMA controller; the
active level (HIGH or LOW) of the acknowledge signal is programmed by
using the DcHardwareConfiguration register (BAh/BBh); when not in use,
this pin must be connected to VCC through a 10 kΩ resistor
input with hysteresis
O
interrupt request from the Host Controller; provides a mechanism for the
Host Controller to interrupt the microprocessor; for details, see
HcHardwareConfiguration register (20h/A0h) Section 14.4.1
If the OneINT bit of the HcHardwareConfiguration register is set to
logic 1, both the Host Controller and the Peripheral Controller interrupt
request will be routed to INT1.
push-pull output
INT2
31
32
K9
O
interrupt request from the Peripheral Controller; provides a mechanism
for the Peripheral Controller to interrupt the microprocessor; for details,
see DcHardwareConfiguration register (BAh/BBh) Section 15.1.4
push-pull output
RESET
K10
J10
I
reset input
input with hysteresis and internal pull-up resistor
H_SUSPEND/ 33
H_WAKEUP
I/O
I/O pin (open-drain); goes HIGH when the Host Controller is in suspend
mode; a LOW pulse must be applied to this pin to wake up the Host
Controller; connect a 100 kΩ resistor to VCC
bidirectional, push-pull input, 3-state open-drain output
D_SUSPEND/ 34
D_WAKEUP
H9
I/O
I/O pin (open-drain); goes HIGH when the Peripheral Controller is in
suspend mode; a LOW pulse must be applied to this pin to wake up the
Peripheral Controller; connect a 100 kΩ resistor to VCC
bidirectional, push-pull input, 3-state open-drain output
ISP1362_5
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
9 of 152
ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
Table 2.
Pin description …continued
Symbol[1]
Pin
Type
Description
LQFP64 TFBGA64
H_PSW1
35
H10
O
connects to the external PMOS switch; required when the external
charge pump or external VBUS is used for providing VBUS to the
downstream port
LOW — switches on the PMOS providing VBUS to the downstream port
HIGH — switches off the PMOS
when not in use, leave this pin open
open-drain output
H_PSW2
36
G9
O
connects to the external PMOS switch
LOW — switches on the PMOS providing VBUS to the downstream port
HIGH — switches off the PMOS
when not in use, leave this pin open
open-drain output
DGND
37
38
G10
F9
-
digital ground
CLKOUT
O
programmable clock output; the default clock frequency is 12 MHz and
can be varied from 3 MHz to 48 MHz
push-pull output
GL
39
F10
O
GoodLink LED indicator output; the LED is off by default, blinks on at
USB traffic
open-drain output; 4 mA
VCC
40
41
E9
-
I
supply voltage (3.3 V); it is recommended that you connect a decoupling
capacitor of 0.01 µF
H_OC2
E10
overcurrent sense input for downstream port 2; both the digital and
analog overcurrent inputs can be used for port 2, depending on the
hardware mode register setting; when not in use, it is recommended that
you connect this pin to the VDD(5V) pin
H_OC1
42
D9
I
overcurrent sensing input for downstream port 1; both the digital and
analog overcurrent inputs can be used for port 1, depending on the
hardware mode register setting; when not in use, it is recommended that
you connect this pin to the VDD(5V) pin
X1
43
44
45
D10
C9
AI
AO
I
crystal input; directly connected to a 12 MHz crystal; when this pin is
connected to an external clock oscillator, leave pin X2 open
X2
crystal output; directly connected to a 12 MHz crystal; when pin X1 is
connected to an external clock oscillator, leave this pin open
OTGMODE
C10
to select whether port 1 is operating in OTG or non-OTG mode; see
Table 8
input with hysteresis
H_DM2
H_DP2
ID
46
47
48
B9
AI/O
AI/O
I
downstream D− signal; host only, port 2; when not in use, leave this pin
open and set bit ConnectPullDown_DS2 of the
HcHardwareConfiguration register
B10
A10
downstream D+ signal; host only, port 2; when not in use, leave this pin
open and set bit ConnectPullDown_DS2 of the
HcHardwareConfiguration register
input pin for sensing OTG ID; the status of this input pin is reflected in the
OTGStatus register (bit 0); see Table 8
input with hysteresis
ISP1362_5
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
10 of 152
ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
Table 2.
Pin description …continued
Symbol[1]
Pin
Type
Description
LQFP64 TFBGA64
OTG_DM1
OTG_DP1
49
A9
AI/O
D− signal of the OTG port, the downstream host port 1 or the upstream
device port; when not in use, leave this pin open and set
bit ConnectPullDown_DS1 of the HcHardwareConfiguration register[2]
50
B8
AI/O
D+ signal of the OTG port, the downstream host port 1 or the upstream
device port; when not in use, leave this pin open and set
bit ConnectPullDown_DS1 of the HcHardwareConfiguration register[2]
AGND
VCC
51
52
A8
B7
-
-
analog ground; used for OTG ATX
supply voltage (3.3 V); it is recommended that you connect a decoupling
capacitor of 0.01 µF
CP_CAP1
CP_CAP2
VBUS
53
54
55
A7
B6
A6
AI/O
AI/O
I/O
charge pump capacitor pin 1; low ESR; see Section 10.6
charge pump capacitor pin 2; low ESR; see Section 10.6
analog input and output
OTG mode — built-in charge pump output or VBUS voltage comparators
input; connect to pin VBUS of the OTG connector
Peripheral Controller mode — input as VBUS sensing; connect to
pin VBUS of the upstream connector
Host Controller mode — not used; leave open
VDD(5V)
56
B5
I
supply reference voltage (5 V); to be used together with built-in
overcurrent circuit; when built-in overcurrent circuit is not in use, this pin
can be tied to VCC; it is recommended that you connect a decoupling
capacitor of 0.01 µF
DGND
VCC
57
58
A5
B4
-
-
digital ground
supply voltage (3.3 V); it is recommended that you connect a decoupling
capacitor of 0.01 µF
TEST1
TEST2
A0
59
60
61
62
A4
B3
A3
B2
I/O
for test input and output, pulled to GND by a 10 kΩ resistor
bidirectional, push-pull input, 3-state output
for test input and output, pulled to GND by a 10 kΩ resistor
bidirectional, push-pull input, 3-state output
command or data phase
I/O
I
I
input
A1
LOW — PIO bus of the Host Controller is selected
HIGH — PIO bus of the Peripheral Controller is selected
input
D0
D1
63
64
A2
A1
I/O
I/O
bit 0 of the bidirectional data bus that connects to the internal registers
and buffer memory of the ISP1362; the bus is in the high-impedance
state when it is idle
bidirectional, push-pull input, 3-state output
bit 1 of the bidirectional data bus that connects to the internal registers
and buffer memory of the ISP1362; the bus is in the high-impedance
state when it is idle
bidirectional, push-pull input, 3-state output
[1] Symbol names with an overscore (for example, NAME) represent active LOW signals.
[2] In OTG mode, this pin is pulled down by an internal resistor.
ISP1362_5
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
11 of 152
ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
7. Functional description
7.1 On-The-Go (OTG) controller
The OTG Controller provides all the control, monitoring and switching functions required
in OTG operations.
7.2 Advanced NXP Slave Host Controller
The advanced NXP Slave Host Controller is designed for highly optimized USB host
functionality. Many advanced features are integrated to fully utilize the USB bandwidth. A
number of tasks are performed at the hardware level. This reduces the requirement on the
microprocessor and thus speeds up the system.
7.3 NXP Peripheral Controller
The NXP Peripheral Controller is a high performance USB device with up to 14
programmable endpoints. These endpoints can be configured as double-buffered
endpoints to further enhance the throughput.
7.4 Phase-Locked Loop (PLL) clock multiplier
A 12 MHz-to-48 MHz clock multiplier PLL is integrated on-chip. This allows the use of a
low-cost 12 MHz crystal that also minimizes ElectroMagnetic Interference (EMI) because
of low frequency. No external components are required for the operation of PLL.
7.5 USB and OTG transceivers
The integrated transceivers (for typical downstream port) directly interface to the USB
connectors (type A) and cables through some termination resistors. The transceiver is
compliant with Ref. 2 “Universal Serial Bus Specification Rev. 2.0”.
7.6 Overcurrent protection
The ISP1362 has a built-in overcurrent protection circuitry. This feature monitors the
current drawn on the downstream VBUS and switches off VBUS when the current exceeds
the current threshold. The built-in overcurrent protection feature can be used when the
port acts as a host port.
7.7 Bus interface
The bus interface connects the microprocessor to the USB host and the USB device,
allowing fast and easy access to both.
7.8 Peripheral Controller and Host Controller buffer memory
4096 bytes (host) and 2462 bytes (device) of built-in memory provide sufficient space for
the buffering of USB traffic. Memory in the Host Controller is addressable by using the fast
and versatile direct addressing method.
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7.9 GoodLink
Indication of a good USB connection is provided through the GoodLink technology
(open-drain, maximum current: 4 mA). During enumeration, LED indicators momentarily
blink on corresponding to the enumeration traffic of the ISP1362 ports. The LED also
blinks on whenever there is valid traffic to the USB ports. In ‘suspend’ mode, the LED is
off.
This feature of GoodLink provides a user-friendly indication on the status of the USB
traffic between the host and the hub, as well as the connected devices. It is a useful
diagnostics tool to isolate faulty equipment, and helps to reduce field support and hotline
costs.
7.10 Charge pump
The charge pump generates a 5 V supply from 3.3 V to drive VBUS when the ISP1362 is
an A-device in OTG mode. For details, see Section 10.6.
8. Host and device bus interface
The interface between the external microprocessor and the ISP1362 Host Controller (HC)
and Peripheral Controller is separately handled by the individual bus interface circuitry.
The host or device automultiplex selects the path for the host access or the device access.
This selection is determined by the A1 address line. For any access to the Host Controller
or Peripheral Controller registers, the command phase and the data phase are needed,
which is determined by the A0 address line.
All the functionality of the ISP1362 can be accessed using a group of registers and two
buffer memory areas (one for the Host Controller and the other for the Peripheral
Controller). Registers can be accessed using Programmed I/O (PIO) mode. The buffer
memory can be accessed using both PIO and Direct Memory Access (DMA) modes.
When CS is LOW (active), address pin A1 has priority over DREQ and DACK. Therefore,
as long as the CS pin is held LOW, the ISP1362 bus interface does not respond to any
DACK signals. When CS is HIGH (inactive), the bus interface will respond to DREQn and
DACKn. Address pin A1 will be ignored when CS is inactive.
An active DACKn signal when DREQn is inactive will be ignored. If DREQ1, DACK1,
DREQ2 and DACK2 are active, the bus interface will be switched off to avoid potential
data corruption.
Table 3 provides the bus access priority for the ISP1362.
Table 3.
Bus access priority table for the ISP1362
Priority CS A1
DACK1
DACK2
DREQ1
DREQ2
Host Controller and Peripheral Controller active
Host Controller
1
2
3
4
5
L
L
X
X
L
X
X
X
L
X
X
H
L
X
X
L
L
H
X
X
X
Peripheral Controller
Host Controller[1]
Peripheral Controller[1]
H
H
H
X
X
H
H
X
H
no driving
[1] Only to enable and disable the bus. Depends only on the DACK signal.
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8.1 Memory organization
The buffer memory in the Host Controller uses a multiconfigurable direct addressing
architecture. The 4096 bytes Host Controller buffer memory is shared by the ISTL0,
ISTL1, INTL and ATL buffers. ISTL0 and ISTL1 are used for isochronous traffic (double
buffer), INTL is used for interrupt traffic, and ATL is used for control and bulk traffic.
The allocation of the buffer memory follows the sequence ISTL0, ISTL1, INTL, ATL and
unused memory. For example, consider that the buffer sizes of the ISTL, INTL and ATL
buffers are 1024 bytes, 1024 bytes and 1024 bytes, respectively. Then, ISTL0 will start
from memory location 0, ISTL1 will start from memory location 1024 (size of ISTL0), INTL
will start from memory location 2048 (size of ISTL0 + size of ISTL1) and ATL will start
from memory location 3072 (size of ISTL0 + size of ISTL1 + size of INTL).
The Host Controller Driver (HCD) has the responsibility to ensure that the sum of the four
memory buffers does not exceed the total memory size. If this condition is violated, it will
lead to data corruption. The buffer size must be a multiple of 2 bytes (one word).
The buffer memory of the Peripheral Controller follows a similar architecture. Details on
the Peripheral Controller memory area allocation can be found in Section 12.3. Note that
the Peripheral Controller buffer memory does not support direct addressing mode.
8.1.1 Memory organization for the Host Controller
The Host Controller in the ISP1362 has a total of 4096 bytes of buffer memory. This buffer
area is divided into four parts (see Table 4 and Figure 4).
Table 4.
Buffer memory areas and their applications
Buffer memory area
ISTL0 and ISTL1
INTL
Application
isochronous transfer (double buffering)
interrupt transfer
ATL
control and bulk transfer
The ISTL0 and ISTL1 buffers must have the same size. Memory is allocated by the Host
Controller according to the value set by the HCD in HcISTLBufferSize, HcINTLBufferSize
and HcATLBufferSize. All buffer sizes must be multiples of 2 bytes (one word).
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0000h
ISTL0 area (512 bytes)
03FFh
0400h
ISTL1 area (512 bytes)
INTL area (512 bytes)
07FFh
0800h
09FFh
0A00h
ATL area (1536 bytes)
0FFFh
004aaa053
Fig 4. Recommended values of the ISP1362 buffer memory allocation
The INTL and ATL buffers use ‘blocked memory management’ scheme to enhance the
status and control capability of each and every individual Philips Transfer Descriptor
(PTD) structure. The INTL and ATL buffers are further divided into blocks of equal sizes,
depending on the value written to the HcATLBlkSize register (ATL) and the HcINTLBlkSize
register (INTL). The ISP1362 Host Controller supports up to 32 blocks in the ATL and
INTL buffers. Each of these blocks can be used for one complete PTD data.
Note that the block size does not include the 8 bytes PTD header and is strictly the size of
the payload. Both the ATL and INTL block sizes must be a multiple of double word
(4 bytes).
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Starting address of the
ATL or INTL buffer area
8 bytes PTD header
Block of 72 bytes
64 bytes PTD header
Payload are
(64 + 8,
where 64 is the block size defined)
8 bytes PTD header
72 bytes
64 bytes PTD header
Payload area
8 bytes PTD header
72 bytes
64 bytes PTD header
Payload area
004aaa055
Fig 5. A sample snapshot of the ATL or INTL memory management scheme
Figure 5 provides a snapshot of a sample ATL or INTL buffer area of 256 bytes with a
block size of 64 bytes. The HCD may put a PTD with payload size of up to 64 bytes but not
more. Depending on the ATL or INTL buffer size, up to 32 ATL blocks and 32 INTL blocks
can be allocated. Note that a portion of the ATL or INTL buffer remains unused. This is
allowed but can be avoided by choosing the appropriate ATL or INTL buffer size and block
size.
The ISTL0 or ISTL1 buffer memory (for isochronous transfer) uses a different memory
management scheme (see Figure 6). There is no fixed block size for the ISTL buffer
memory. While the PTD header remains 8 bytes for all PTDs, the PTD payload can be of
any size. The PTD payload, however, is padded to the next double word boundary when
the Host Controller calculates the location of the next PTD header. The ISP1362 Host
Controller checks the payload size from the ‘Total size’ field of the PTD itself and
calculates the location of the next PTD header based on this information.
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Starting address of ISTL0 or ISTL1
PTD header (Total size = 64)
72 bytes (64 + 8)
168 bytes (160 + 8)
40 bytes (32 + 8)
PTD payload (64 bytes)
PTD header (Total size = 160)
PTD payload (160 bytes)
PTD header (Total size = 32)
PTD payload (32 bytes)
004aaa054
‘Total size’ is a 10-bit field in the PTD.
Fig 6. A sample snapshot of the ISTL memory management scheme
8.1.2 Memory organization for the Peripheral Controller
The ISP1362 Peripheral Controller has a total of 2462 bytes of built-in buffer memory. This
buffer memory is multiconfigurable to support the requirements of different applications.
The Peripheral Controller buffer memory is divided into 16 areas to be used by control
OUT, control IN and 14 programmable endpoints.
Figure 7 provides a snapshot of the Peripheral Controller buffer memory.
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Control OUT (64 bytes)
Control IN (64 bytes)
Endpoint 1 (128 bytes)
Endpoint 2 (128 bytes)
Endpoint 3 (512 bytes)
Endpoint 4 (64 bytes)
Endpoint 5 (64 bytes)
Endpoint 6 (96 bytes)
Endpoint 7 (96 bytes)
004aaa057
Fig 7. Peripheral Controller buffer memory organization
The buffer memory is configured by DcEndpointConfiguration Registers (ECRs). Although
the control endpoint has a fixed configuration, all 16 endpoints (control OUT, control IN
and 14 programmable endpoints) must be configured before the Peripheral Controller
internally allocates the buffer. The 14 programmable endpoints can be programmed into
sizes ranging from 16 bytes to 1023 bytes, single or double buffering.
The Peripheral Controller buffer memory for each endpoint can be accessed through the
DcEndpointStatusImage registers.
8.2 PIO access mode
The ISP1362 provides PIO mode for external microprocessors to access its internal
control registers and buffer memory. It occupies only four I/O ports or four memory
locations of a microprocessor. An external microprocessor can read or write to the internal
control registers and buffer memory of the ISP1362 through PIO operating mode. Figure 8
shows the PIO interface between a microprocessor and the ISP1362.
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microprocessor
bus interface
[
]
[
]
D 15:0
D 15:0
RD
WR
CS
A1
RD
WR
CS
A2
MICRO-
PROCESSOR
ISP1362
A0
A1
INT1
INT2
IRQ1
IRQ2
004aaa042
Fig 8. PIO interface between a microprocessor and the ISP1362
8.3 DMA mode
The ISP1362 also provides DMA mode for external microprocessors to access the
internal buffer memory of the ISP1362. The DMA operation enables data to be transferred
between the system memory of a microprocessor and the internal buffer memory of the
ISP1362.
Remark: The DMA operation must be controlled by the DMA controller of the external
microprocessor system (master). Figure 9 shows the DMA interface between a
microprocessor system and the ISP1362.
The ISP1362 provides two DMA channels. DMA channel 1 (controlled by the DREQ1 and
DACK1 signals) is for the DMA transfer between the system memory of a microprocessor
and the internal buffer memory of the ISP1362 Host Controller. DMA channel 2 (controlled
by the DREQ2 and DACK2 signals) is for the DMA transfer between the system memory
of a microprocessor and the internal buffer memory of the ISP1362 Peripheral Controller.
The ISP1362 provides an internal End-Of-Transfer (EOT) signal to terminate the DMA
transfer.
microprocessor
bus interface
[
]
[
]
D 15:0
D 15:0
RD
RD
WR
WR
MICRO-
PROCESSOR
ISP1362
DACK1
DREQ1
DACK1
DREQ1
DACK2
DREQ2
DACK2
DREQ2
004aaa043
Fig 9. DMA interface between a microprocessor and the ISP1362
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8.4 PIO access to internal control registers
Table 5 shows the I/O port addressing in the ISP1362. The complete I/O port address
decoding must combine with the chip select signal (CS) and address lines (A1 and A0).
The direction of access of I/O ports, however, is controlled by the RD and WR signals.
When RD is LOW, the microprocessor reads data from the data port of the ISP1362 (see
Figure 10). When WR is LOW, the microprocessor writes command to the command port
or writes data to the data port (see Figure 11).
Table 5.
I/O port addressing
CS
L
A1
A0
L
Access Data bus width Description
L
R/W
W
16 bits
16 bits
16 bits
16 bits
Host Controller data port
L
L
H
L
Host Controller command port
Peripheral Controller data port
Peripheral Controller command port
L
H
H
R/W
W
L
H
The register structure in the ISP1362 is a command-data register pair structure. A
complete register access needs a command phase followed by a data phase. The
command (also named as the index of a register) is used to inform the ISP1362 about the
register that will be accessed at the data phase.
On the 16-bit data bus of a microprocessor, a command occupies the lower byte and the
upper byte is filled with zeros (see Figure 12).
For 32-bit registers, the access cycle is shown in Figure 13. It consists of a command
phase followed by two data phases.
Bus interface
microprocessor
bus interface
Host bus interface
Device bus interface
004aaa122
0
1
A1
When A1 = L, the microprocessor accesses the Host Controller.
When A1 = H, the microprocessor accesses the Peripheral Controller.
Fig 10. Microprocessor access to the Host Controller or the Peripheral Controller
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CMD/DATA
SWITCH
host or device
bus interface
1
0
command port
data port
COMMANDS
Command register
.
.
.
A0
004aaa160
Control registers
When A0 = L, the microprocessor accesses the data port.
When A0 = H, the microprocessor accesses the command port.
Fig 11. Access to internal control registers
Read 16-bit
Write 16-bit
A0/A1
A0/A1
CS
CS
RD
WR
D[15:0]
D[15:0]
004aaa045
Fig 12. PIO register access
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Reading from a 16-bit or 32-bit register
32-bit access
16-bit access
A0/A1
CS
RD
WR
D[15:0]
Data phase
Second data phase
for 32-bit register
Command phase
Writing to a 16-bit or 32-bit register
32-bit access
16-bit access
A0/A1
CS
RD
WR
D[15:0]
Data phase
Command phase
Second data phase
for 32-bit register
004aaa046
Fig 13. PIO access for a 16-bit or 32-bit register
The following is a sample code for PIO access to internal control registers:
unsigned long read_reg32(unsigned char reg_no)
{
unsigned int result_l,result_h;
unsigned long result;
outport(hc_com, reg_no); // Command phase
result_l = inport(hc_data); // Data phase
result_h = inport(hc_data); // Data phase
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result = result_h;
result = result<<16;
result = result+result_l;
return(result);
}
void write_reg32(unsigned char reg_no, unsigned long data2write)
{
unsigned int low_word;
unsigned int hi_word;
low_word=data2write&0x0000FFFF;
hi_word=(data2write&0xFFFF0000)>>16;
outport(hc_com,reg_no|0x80); // Command phase
outport(hc_data,low_word); // Data phase
outport(hc_data,hi_word); // Data phase
}
unsigned int read_reg16(unsigned char reg_no)
{
unsigned int result;
outport(hc_com, reg_no); // Command phase
result = inport(hc_data); // Data phase
return(result);
}
void write_reg16(unsigned char reg_no, unsigned int data2write)
{
outport(hc_com,reg_no|0x80); // Command phase
outport(hc_data,data2write); // Data phase
}
8.5 PIO access to the buffer memory
The buffer memory in the ISP1362 can be addressed using either the direct addressing
method or the indirect addressing method.
8.5.1 PIO access to the buffer memory by using direct addressing
This method uses the HcDirectAddressLength register to specify two parameters required
to randomly access the ISP1362 buffer memory (total of 4096 bytes). These two
parameters are:
Starting address — location to start writing or reading
Data length — number of bytes to write or read.
The following is a sample code to set the HcDirectAddressLength register:
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void Set_DirAddrLen(unsigned int data_length,unsigned int addr)
{
unsigned long RegData = 0;
RegData =(long)(addr&0x7FFF);
RegData|=(((long)data_length)<<16);
write_reg32(HcDirAddrLen,RegData);
}
After the proper value is written to the HcDirectAddressLength register, data is accessible
from the HcDirectAddressData register (called as HcDirAddr_Port in the following sample
code). A sample code to write word_size bytes of data from *w_ptr to the memory
locations of the ISP1362 buffer starting from the address start_addr is as follows:
void direct_write(unsigned int *w_ptr,unsigned int start_addr,unsigned int word_size)
{
unsigned int cnt = 0;
Set_DirAddrLen(word_size*2,start_addr);
outport(hc_com,HcDirAddr_Port|0x80); // hc_com is system address of
// HC command port
do
{
outport(hc_data,*(w_ptr+cnt)); // hc_data is system address of
// HC data port
cnt++;
}
while(cnt<word_size);
}
Direct addressing allows fast and random access to any location within the ISP1362
memory. Your program, however, needs the address location of each buffer area to
access them.
8.5.2 PIO access to the buffer memory by using indirect addressing
Indirect addressing is the addressing method that is compatible with NXP ISP1161
addressing mode. This method uses a unique data port for each buffer memory area
(ATL, INTL, ISTL0 and ISTL1). These four data areas share the HcTransferCounter
register that is used to indicate the number of bytes to be transferred.
A sample code to write an array at *a_ptr into the ATL memory area with word_size as the
word size is given as follows:
void write_atl(unsigned int *a_ptr, unsigned int word_size)
{
int cnt;
write_reg16(HcTransferCnt,word_size*2);
outport(hc_com,HcATL_Port|0x80); // hc_com is system address of HC
// command port
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cnt=0;
do
{
outport(hc_data,*(a_ptr+cnt)); // hc_data is system address of HC
// data port
cnt++;
}
while(cnt<(word_size));
Remark: The HcTransferCounter register counts the number of bytes even though the
transfer is in number of words. Therefore, the transfer counter must be set to word_size ×
2. Incorrect setting of the HcTransferCounter register may cause the ISP1362 to go into an
indeterminate state.
The buffer memory access using indirect addressing always starts from location 0 of each
buffer area. Only the front portion of the memory (example: first 64 bytes of a 1024 bytes
buffer) can be accessed. Therefore, to access a portion of the memory that does not start
from memory location 0, all memory locations before that location must be accessed in a
sequential order. The method is similar to the sequential file access method.
8.6 Setting up a DMA transfer
The ISP1362 uses two DMA channels to individually serve the Host Controller and the
Peripheral Controller. The DMA transfer allows the system CPU to work on other tasks
while the DMA controller transfers data to or from the ISP1362. The DMA slave controller,
in the ISP1362, is compatible with the 8327 type DMA controller.
The DMA transfer can be used with direct addressing mode or indirect addressing mode.
The registers used in these two modes are shown in Table 6.
Table 6.
Registers used in addressing modes
Addressing mode[1]
Direct addressing
Indirect addressing
HcDMAConfiguration bit[3:1]
Total bytes to transfer
HcDirectAddressLength
HcTransferCounter
1XXB
0XXB
[1] In direct addressing mode, HcTransferCounter must be set to 0001h.
8.6.1 Configuring registers for a DMA transfer
To set up a DMA transfer, the following Host Controller registers must be configured,
depending on the type of transfer required:
• HcHardwareConfiguration
– DREQ1 output polarity (bit 5)
– DACK1 input polarity (bit 6)
– DACK mode (bit 8)
• HcµPInterruptEnable
– If you want an interrupt to be generated after the DMA transfer is complete, set
EOTInterruptEnable (bit 3).
• HcµPInterrupt
– Before initiating the DMA transfer, clear AllEOTInterrupt (bit 3). This bit is set when
the DMA transfer is complete.
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• HcTransferCounter
– If DMACounterEnable of the HcDMAConfiguration register is set (that is, the DMA
counter is enabled), HcTransferCounter must be set to the number of bytes to be
transferred.
• HcDMAConfiguration
– Read or write DMA (bit 0)
– Targeted buffer: ISTL0, ISTL1, ATL and INTL (bits 1 to 3)
– DMA enable or disable (bit 4)
– Burst length (bits 5 to 6)
– DMA counter enable (bit 7)
Remark: Configure the HcDMAConfiguration register only after you have configured all
the other registers. The ISP1362 will assert DREQ1 once the DMA enable bit in this
register is set.
8.6.2 Combining the two DMA channels
The ISP1362 allows systems with limited DMA channels to use a single DMA channel
(DMA1) for both the Host Controller and the Peripheral Controller. This option can be
enabled by writing logic 1 to the OneDMA bit of the HcHardwareConfiguration register. If
this option is enabled, the polarity of the Peripheral Controller DMA and the Host
Controller DMA must be set to DACK active LOW and DREQ active HIGH.
8.7 Interrupts
Various events in the Host Controller, the Peripheral Controller and the OTG Controller
can be programmed to generate a hardware interrupt. By default, the interrupt generated
by the Host Controller and the OTG Controller is routed out at the INT1 pin and the
interrupt generated by the Peripheral Controller is routed out at the INT2 pin.
8.7.1 Interrupt in the Host Controller and the OTG Controller
There are two levels of interrupts represented by level 1 and level 2 (see Figure 14).
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OtgInterruptEnable register
OTG_TMR_IE
B_SE0_SRP_IE
A_SRP_DET_IE
OTG_RESUME_IE
OTG_SUSPND_IE
RMT_CONN_IE
B_SESS_VLD_IE
A_SESS_VLD_IE
B_SESS_END_IE
A_VBUS_VLD_IE
OR
ID_REG_IE
OtgInterrupt register
OTG_TMR_TIMEOUT
B_SE0_SRP
A_SRP_DET
level 2
OTG_RESUME
OTG_SUSPND
RMT_CONN_C
B_SESS_VLD_C
A_SESS_VLD_C
B_SESS_END_C
(OTG group)
HcµPInterrupt register
HcµPInterruptEnable register
A_VBUS_VLD_C
ID_REG_C
HcInterruptEnable register
MIE
RHSC
FNO
UE
RD
SF
SO
OR
HcInterruptStatus register
level 2
RHSC
FNO
UE
(OPR group)
RD
SF
OR
level 1
SO
LE
From INT2
LATCH
InterruptPinEnable
INT1
HcHardwareConfiguration
register
OneINT
HcHardwareConfiguration
register
004aaa395
Fig 14. HC and OTG interrupt logic
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Interrupt level 2 (OPR group) contains six possible interrupt events (recorded in the
HcInterruptStatus register). When any of these events occurs, the corresponding bit will
be set to logic 1, and if the corresponding bit in the HcInterruptEnable register is also
logic 1, the 6-input OR gate will output logic 1. This output is combined with the value of
MIE (bit 31 of HcInterruptEnable) using the AND operation and logic 1 output at this AND
gate will cause the OPR bit in the HcµPInterrupt register to be set to logic 1.
Interrupt level 2 (OTG group) contains 11 possible interrupt events (recorded in the
OtgInterrupt register). When any of these events occurs, the corresponding bit will be set
to logic 1, and if the corresponding bit in the OtgInterruptEnable register is also logic 1,
the 11-input OR gate will output logic 1 and cause the OTG_IRQ bit in the HcµPInterrupt
register to be set to logic 1.
Level 1 interrupts contains 10 possible interrupt events. The HcµPInterrupt and
HcµPInterruptEnable registers work in the same way as the HcInterruptStatus and
HcInterruptEnable registers. The output from the 10-input OR gate is connected to a latch,
which is controlled by InterruptPinEnable (the bit 0 of HcHardwareConfiguration register).
When the software wishes to temporarily disable the interrupt output of the ISP1362 Host
Controller and OTG Controller, follow this procedure:
1. Set the InterruptPinEnable bit in the HcHardwareConfiguration register to logic 1.
2. Clear all bits in the HcµPInterrupt register.
3. Set the InterruptPinEnable bit to logic 0.
To re-enable the interrupt generation, set the InterruptPinEnable bit to logic 1.
Remark: The InterruptPinEnable bit in the HcHardwareConfiguration register controls the
latch of the interrupt output. When this bit is set to logic 0, the interrupt output will remain
unchanged, regardless of any operation on interrupt control registers.
If INT1 is asserted, and the HCD wishes to temporarily mask off the INT signal without
clearing the HcµPInterrupt register, follow this procedure:
1. Make sure that the InterruptPinEnable bit is set to logic 1.
2. Clear all bits in the HcµPInterruptEnable register.
3. Set the InterruptPinEnable bit to logic 0.
To re-enable the interrupt generation:
1. Set all bits in the HcµPInterruptEnable register, according to the HCD requirements.
2. Set the InterruptPinEnable bit to logic 1.
8.7.2 Interrupt in the Peripheral Controller
The registers that control the interrupt generation in the ISP1362 Peripheral Controller
are:
• DcMode (bit 3)
• DcHardwareConfiguration (bits 0 and 1)
• DcInterruptEnable
• DcInterrupt
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The DcMode register (bit 3) is the overall Peripheral Controller interrupt enable.
DcHardwareConfiguration determines the following features:
• Level-triggered or edge-triggered (bit 1)
• Output polarity (bit 0)
For details on the interrupt logic in the Peripheral Controller, refer to Ref. 5 “Interrupt
Control application note”.
8.7.3 Combining INT1 and INT2
In some embedded systems, interrupt inputs to the CPU are a very scarce resource. The
system designer might want to use just one interrupt line to serve the Host Controller, the
Peripheral Controller and the OTG Controller. In such a case, make sure the OneINT
feature is activated.
When OneINT (bit 9 of the HcHardwareConfiguration register) is set to logic 1, both the
INT1 (HC or OTG Controller) interrupt and the INT2 (Peripheral Controller) interrupt are
routed to pin INT1, thereby reducing hardware resource requirements.
Remark: Both the Host Controller (or OTG Controller) and the Peripheral Controller
interrupts must be set to the same polarity (active HIGH or active LOW) and the same
trigger type (edge or level). Failure to conform to this will lead to unpredictable behavior of
the ISP1362.
8.7.4 Behavior difference between level-triggered and edge-triggered interrupts
In many microprocessor systems, the operating system disables an interrupt when it is in
an Interrupt Service Routine (ISR). If there is an interrupt event during this period, it will
lead to level-triggered interrupt and edge-triggered interrupt.
8.7.4.1 Level-triggered interrupt
When the ISP1362 interrupt asserts, the operating system takes no action because it
disables the interrupt when it is in the ISR. The interrupt line of the ISP1362 remains
asserted. When the operating system exits the ISR and re-enables the interrupt
processing, it sees the asserted interrupt line and immediately enters the ISR.
8.7.4.2 Edge-triggered interrupt
When the ISP1362 outputs a pulse, the operating system takes no action because it
disables the interrupt when it is in the ISR. The interrupt line of the ISP1362 goes back to
the inactive state. When the operating system exits the ISR and re-enables the interrupt
processing, it sees no pending interrupt. As a result, the interrupt is missed.
If the system needs to know whether an interrupt (approximately 160 ns pulse width)
occurs during this period, it may read the HcµPInterrupt register (see Table 69).
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9. Power-On Reset (POR)
When VCC is directly connected to the RESET pin, the internal POR pulse width (tPORP
)
will typically be 800 ns. The pulse is started when VCC rises above Vtrip (2.03 V).
To give a better view of the functionality, Figure 15 shows a possible curve of VCC with
dips at t2 to t3 and t4 to t5. If the dip at t4 to t5 is too short (that is, < 11 µs), the internal
POR pulse will not react and will remain LOW. The internal POR starts with a HIGH at t0.
At t1, the detector will see the passing of the trip level and a delay element will add
another tPORP before it drops to LOW.
The internal POR pulse will be generated whenever VCC drops below Vtrip for more than
11 µs.
V
CC
V
trip
t0
t1
t2
t3
t4
t5
(1)
t
PORP
PORP
t
PORP
004aaa482
(1) PORP = Power-On Reset Pulse.
Fig 15. Internal power-on reset timing
The RESET pin can be either connected to VCC (using the internal POR circuit) or
externally controlled (by the micro, ASIC, and so on). Figure 16 shows the availability of
the clock with respect to the external reset pulse.
RESET
EXTERNAL CLOCK
004aaa484
A
Stable external clock is available at A.
Fig 16. Clock with respect to the external power-on reset
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10. On-The-Go (OTG) Controller
10.1 Introduction
OTG is a supplement to the Hi-Speed USB (USB 2.0) specification that augments existing
USB peripherals by adding to these peripherals limited host capability to support other
targeted USB peripherals. It is primarily targeted at portable devices because it addresses
concerns related to such devices, such as a small connector and low power. Non-portable
devices (even standard hosts), nevertheless, can also benefit from OTG features.
The ISP1362 OTG Controller is designed to perform all the tasks specified in the OTG
supplement. It supports Host Negotiation Protocol (HNP) and Session Request Protocol
(SRP) for dual-role devices. The ISP1362 uses software implementation of HNP and SRP
for maximum flexibility. A set of OTG registers provides the control and status monitoring
capabilities to support software HNP or SRP.
Besides the normal USB transceiver, timers and analog components required by OTG are
also integrated on-chip. The analog components include:
• Built-in 3.3 V-to-5 V charge pump
• Voltage comparators
• Pull-up or pull-down resistors on data lines
• Charge or discharge resistors for VBUS
10.2 Dual-role device
When port 1 of the ISP1362 is configured in OTG mode, it can be used as an OTG
dual-role device. A dual-role device is a USB device that can function either as a host or
as a peripheral. As a host, the ISP1362 can support all four types of transfers (control,
bulk, isochronous and interrupt) at full-speed or low-speed. As a peripheral, the ISP1362
can support two control endpoints and up to 14 configurable endpoints, which can be
programmed to any of the four transfer types.
The default role of the ISP1362 is controlled by the ID pin, which in turn is controlled by
the type of plug connected to the mini-AB receptacle. If ID = LOW (mini-A plug
connected), it becomes an A-device, which is a host by default. If ID = HIGH (mini-B plug
connected), it becomes a B-device, which is a peripheral by default.
Both the A-device and the B-device work on a session base. A session is defined as the
period of time in which devices exchange data. A session starts when VBUS is driven and
ends when VBUS is turned off. Both the A-device and the B-device may start a session.
During a session, the role of the host can be transferred back and forth between the
A-device and the B-device any number of times by using HNP.
If the A-device wants to start a session, it turns on VBUS by enabling the charge pump. The
B-device detects that VBUS has risen above the B_SESS_VLD level and assumes the role
of a peripheral, asserting its pull-up resistor on the DP line. The A-device detects the
remote pull-up resistor and assumes the role of a host. Then, the A-device can
communicate with the B-device as long as it wishes. When the A-device finishes
communicating with the B-device, the A-device turns-off VBUS and both the devices finally
go into the idle state. See Figure 18 and Figure 19.
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If the B-device wants to start a session, it must initiate SRP by ‘data line pulsing’ and
‘VBUS pulsing’. When the A-device detects any of these SRP events, it turns on its VBUS
(note that only the A-device is allowed to drive VBUS). The B-device assumes the role of a
peripheral, and the A-device assumes the role of a host. The A-device detects that the
B-device can support HNP by getting the OTG descriptor from the B-device. The A-device
will then enable the HNP hand-off by using SetFeature (b_hnp_enable) and then go into
the ‘suspend’ state. The B-device signals claiming the host role by de-asserting its pull-up
resistor. The A-device acknowledges by going into the peripheral state. The B-device then
assumes the role of a host and communicates with the A-device as long as it wishes.
When the B-device finishes communicating with the A-device, both the devices finally go
into the idle state. See Figure 18 and Figure 19.
10.3 Session Request Protocol (SRP)
As a dual-role device, the ISP1362 can initiate and respond to SRP. The B-device initiates
SRP by data line pulsing, followed by VBUS pulsing. The A-device can detect either data
line pulsing or VBUS pulsing.
10.3.1 B-device initiating SRP
The ISP1362 can initiate SRP by performing the following steps:
1. Detect initial conditions [read ID_REG, B_SESS_END and SE0_2MS (bits 0, 2 and 9)
of the OtgStatus register].
2. Start data line pulsing [set LOC_CONN (bit 4) of the OtgControl register to logic 1].
3. Wait for 5 ms to 10 ms.
4. Stop data line pulsing [set LOC_CONN (bit 4) of the OtgControl register to logic 0].
5. Start VBUS pulsing [set CHRG_VBUS (bit 1) of the OtgControl register to logic 1].
6. Wait for 10 ms to 20 ms.
7. Stop VBUS pulsing [set CHRG_VBUS (bit 1) of the OtgControl register to logic 0].
8. Discharge VBUS for about 30 ms [by using DISCHRG_VBUS (bit 2) of the OtgControl
register], optional.
The B-device must complete both data line pulsing and VBUS pulsing within 100 ms.
10.3.2 A-device responding to SRP
The A-device must be able to respond to one of the two SRP events: data line pulsing or
VBUS pulsing. The ISP1362 allows you to choose which SRP to support and has a
mechanism to disable or enable the SRP detection. This is useful for some applications
under certain cases. For example, if the A-device battery is low, it may not want to turn on
its VBUS by detecting SRP. In this case, it may choose to disable the SRP detection
function.
When the data line SRP detection is used, the ISP1362 can detect either the DP pulsing
or the DM pulsing. This means a peripheral-only device can initiate data line pulsing SRP
through DP (full-speed) or DM (low-speed). A dual-role device will always initiate data line
pulsing SRP through DP because it is a full-speed device.
• Steps to enable the SRP detection by VBUS pulsing:
– Set A_SEL_SRP (bit 9) of the OtgControl register to logic 0.
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– Set A_SRP_DET_EN (bit 10) of the OtgControl register to logic 1.
• Steps to enable the SRP detection by data line pulsing:
– Set A_SEL_SRP (bit 9) of the OtgControl register to logic 1.
– Set A_SRP_DET_EN (bit 10) of the OtgControl register to logic 1.
• Steps to disable the SRP detection:
– Set A_SRP_DET_EN (bit 10) of the OtgControl register to logic 0.
10.4 Host Negotiation Protocol (HNP)
HNP is used to transfer control of the host role between the default host (A-device) and
the default peripheral (B-device) during a session. When the A-device is ready to give up
its role as a host, it will condition the B-device by SetFeature (b_hnp_enable) and will go
into ‘suspend’. If the B-device wants to use the bus at that time, it signals a ‘disconnect’ to
the A-device. Then, the A-device will take the role of a peripheral and the B-device will
take the role of a host.
10.4.1 Sequence of HNP events
The sequence of events for HNP as observed on the USB bus is illustrated in Figure 17.
A-device
1
6
8
3
B-device
5
2
7
4
DP Composite
004aaa079
DP driven
Legend
Pull-up dominates
Pull-down dominates
Normal bus activity
Fig 17. HNP sequence of events
As can be seen in Figure 17:
1. The A-device completes using the bus and stops all bus activities (that is, suspends
the bus).
2. The B-device detects that the bus is idle for more than 5 ms and begins HNP by
turning off the pull-up on DP. This allows the bus to discharge to the SE0 state.
3. The A-device detects SE0 on the bus and recognizes this as a request from the
B-device to become a host. The A-device responds by turning on its DP pull-up within
3 ms of first detecting SE0 on the bus.
4. After waiting for 30 µs to ensure that the DP line is not HIGH because of the residual
effect of the B-device pull-up, the B-device notices that the DP line is HIGH and the
DM line is LOW (that is, J state). This indicates that the A-device has recognized the
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HNP request from the B-device. At this point, the B-device becomes a host and
asserts bus reset to start using the bus. The B-device must assert the bus reset (that
is, SE0) within 1 ms of the time that the A-device turns on its pull-up.
5. When the B-device completes using the bus, it stops all bus activities. Optionally, the
B-device may turn on its DP pull-up at this time.
6. The A-device detects lack of bus activities for more than 3 ms and turns off its DP
pull-up. Alternatively, if the A-device has no further need to communicate with the
B-device, the A-device may turn off VBUS and end the session.
7. The B-device turns on its pull-up.
8. After waiting 30 µs to ensure that the DP line is not HIGH because of the residual
effect of the A-device pull-up, the A-device notices that the DP line is HIGH (and the
DM line is LOW) indicating that the B-device is signaling a connect and is ready to
respond as a peripheral. At this point, the A-device becomes a host and asserts the
bus reset to start using the bus.
10.4.2 OTG state diagrams
Figure 18 and Figure 19 show the state diagrams for the dual-role A-device and the
dual-role B-device, respectively. For a detailed explanation, refer to Ref. 1 “On-The-Go
Supplement to the USB 2.0 Specification Rev. 1.0a”.
The OTG state machine is implemented with software. The inputs to the state machine
come from four sources: hardware signals from the USB bus, software signals from the
application program, internal variables with the state machines and timers:
• Hardware inputs: Include id, a_vbus_vld, a_sess_vld, b_sess_vld, b_sess_end,
a_conn, b_conn, a_bus_suspend, b_bus_suspend, a_bus_resume, b_bus_resume,
a_srp_det and b_se0_srp. All these inputs can be derived from the OtgInterrupt and
OtgStatus registers.
• Software inputs: Include a_bus_req, a_bus_drop and b_bus_req.
• Internal variables: Include a_set_b_hnp_en, b_hnp_enable and b_srp_done.
• Timers: The HNP state machine uses four timers: a_wait_vrise_tmr,
a_wait_bcon_tmr, a_aidl_bdis_tmr and b_ase0_brst, tmr. All timers are started on
entry to and reset on exit from their associated states. The ISP1362 provides a
programmable timer that can be used as any of these four timers.
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b_idle
drv_vbus/
chrg_vbus/
loc_conn/
loc_sof/
START
a_idle
drv_vbus/
chrg_vbus/
loc_conn/
loc_sof/
id
id | a_bus_req |
(a_sess_vld/ &
b_conn/)
a_bus_drop/ &
(a_bus_req |
a_srp_det)
id | a_bus_drop |
a_wait_vfall
a_wait_bcon_tmout
a_wait_vrise
drv_vbus
loc_conn/
loc_sof/
drv_vbus/
loc_conn/
loc_sof/
id | a_bus_drop
b_bus_suspend
id | a_bus_drop |
a_vbus_vld |
a_wait_vrise_tmout
id | a_bus_drop
a_vbus_err
drv_vbus/
loc_conn/
loc_sof/
a_vbus_vld/
a_vbus_vld/
a_peripheral
drv_vbus
loc_conn
loc_sof/
a_wait_bcon
a_vbus_vld/
a_vbus_vld/
drv_vbus
loc_conn/
loc_sof/
b_conn/ &
a_set_b_hnp_en/
b_conn/ &
a_set_b_hnp_en
id |
b_conn/ |
b_conn
id |
a_bus_drop
a_bus_drop |
a_aidl_bdis_tmout
a_bus_req |
b_bus_resume
a_suspend
a_host
drv_vbus
loc_conn/
loc_sof/
drv_vbus
loc_conn/
loc_sof
a_bus_req/ |
a_suspend_req
004aaa077
Fig 18. Dual-role A-device state diagram
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a_idle
drv_vbus/
chrg_vbus/
loc_conn/
loc_sof/
START
b_idle
drv_vbus/
chrg_vbus/
loc_conn/
loc_sof/
id/
b_bus_req &
b_sess_end &
b_se0_srp
id/ |
b_sess_vld/
id/ |
b_srp_done
id/ |
b_sess_vld/
b_host
b_srp_init
pulse loc_conn
pulse chrg_vbus
loc_sof/
chrg_vbus/
loc_conn/
loc_sof
id/ |
b_sess_vld/
b_sess_vld
b_bus_req/ |
a_conn/
a_conn
a_bus_resume |
b_ase0_brst_tmout
b_wait_acon
b_peripheral
chrg_vbus/
loc_conn
chrg_vbus/
loc_conn/
loc_sof/
b_bus_req &
b_hnp_en &
a_bus_suspend
loc_sof/
004aaa078
Fig 19. Dual-role B-device state diagram
10.4.3 HNP implementation and OTG state machine
The OTG state machine is the software behind all the OTG functionality. It is implemented
in the microprocessor system that is connected to the ISP1362. The ISP1362 provides all
input status, the output control and timers to fully support the state machine transitions in
Figure 18 and Figure 19.
These registers include:
• OtgControl register: provides control to VBUS driving, charging or discharging, data
line pull-up or pull-down, SRP detection, and so on.
• OtgStatus register: provides status detection on VBUS and data lines including ID,
VBUS session valid, session end, overcurrent, bus status.
• OtgInterrupt register: provides interrupts for status change in OtgStatus register bits
and the OtgTimer time-out event.
• OtgInterruptEnable register: provides interrupt mask for OtgInterrupt register bits.
• OtgTimer register: provides 0.01 ms base programmable timer for use in the OTG
state machine.
The OTG interrupt is generated on the INT1 pin. It is shared with the Host Controller
interrupt. To enable the OTG interrupt, perform these steps:
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1. Set the polarity and level-triggering or edge-triggering mode of the
HcHardwareConfiguration register (bits 1 and 2, default is level-triggered, active
LOW).
2. Set the corresponding bits of the OtgInterruptEnable register (bits 0 to 8, or some of
them).
3. Set bit OTG_IRQ_InterruptEnable of the HcµPInterruptEnable register (bit 9).
4. Set bit InterruptPinEnable of the HcHardwareConfiguration register (bit 0).
When an interrupt is generated on INT1, perform these steps in the ISR to get the related
OTG status:
1. Read the HcµPInterrupt register. If OTG_IRQ (bit 9) is set, then step 2.
2. Read the OtgInterrupt register. If any of the bits 0 to 4 are set, then step 3.
3. Read the OtgStatus register.
The OTG state machine routines are called when any of the inputs is changed. These
inputs come from either OTG registers (hardware) or application program (software). The
outputs of the state machine include control signals to the OTG register (for hardware)
and states or error codes (for software). For more information, refer to NXP document Ref.
3 “ISP136x Embedded Programming Guide (UM10008)”.
10.5 Power saving in the idle state and during wake-up
The ISP1362 can be put in power saving mode if the OTG device is not in a session. This
significantly reduces the power consumption. In this mode, both the Peripheral Controller
and the Host Controller are suspended. The PLL and the oscillator are stopped, and the
charge pump is in the suspend state.
As an OTG device, however, the ISP1362 is required to respond to the SRP event. To
support this, a LazyClock is kept running when the chip is in power saving mode. An SRP
event will wake-up the chip (that is, enable the PLL and the oscillator). Besides this, an ID
change or B_SESS_VLD detection can also wake-up the chip. These wake-up events can
be enabled or disabled by programming the related bits of the OtgInterruptEnable register
before putting the chip in power saving mode. If the bit is set, then the corresponding
event (status change) will wake-up the ISP1362. If the bit is cleared, then the
corresponding event will not wake-up the ISP1362.
You can also wake-up the ISP1362 from power saving mode by using software. This is
accomplished by accessing any of the ISP1362 registers. Accessing a register will assert
CS of the ISP1362, and therefore, set it awake.
10.6 Current capacity of the OTG charge pump
The ISP1362 uses a built-in charge pump to generate a 5 V VBUS supply from a 3.3 V ±
0.3 V voltage source. The only external component required is a capacitor. The value of
this capacitor depends on the amount of current drive required. Table 7 provides two
recommended capacitor values and the corresponding current drive.
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Table 7.
Recommended capacitor values
Capacitance
27 nF
VCC
Current
8 mA
3.0 V to 3.6 V
3.0 V to 3.3 V
3.3 V to 3.6 V
82 nF
14 mA
20 mA
The connection of the external capacitor (Cext) is given in the partial schematics in
Figure 20.
Remark: If the internal charge pump is not used, Cext is not required.
V
OTG V
BUS
BUS
0.1 µF
4.7 µF
ISP1362
CP_CAP2
CP_CAP1
C
ext
004aaa154
Fig 20. External capacitors connection
11. USB Host Controller (HC)
11.1 USB states of the Host Controller
The USB Host Controller in the ISP1362 has four USB states: USBOperational,
USBReset, USBSuspend and USBResume. These states define the responsibilities of
the Host Controller related to the USB signaling and bus states. These signals are visible
to the Host Controller Driver (HCD), the software driver of the Host Controller, by using the
control registers of the ISP1362 USB Host Controller.
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USBOperational
USBReset write
USBOperational write
USBReset write
USBOperational write
USBResume
USBReset
USBSuspend write
hardware or software
reset
USBResume write
or
remote wake-up
USBReset write
mgt947
USBSuspend
Fig 21. USB Host Controller states of the ISP1362
The USB states are reflected in the HostControllerFunctionalState (HCFS) field of the
HcControl register. The HCD is allowed to perform only USB state transitions shown in
Figure 21.
11.2 USB traffic generation
USB traffic can be generated only when the ISP1362 USB Host Controller is under the
USBOperational state. Therefore, the HCD must set the ISP1362 USB HC in the
USBOperational state. This is done by setting the HCFS field of the HcControl register
before generating USB traffic.
A brief flow of the USB traffic generation is described as follows:
1. Reset the ISP1362 by using the RESET pin or the software reset.
2. Set the physical size of the ATL, interrupt, ISTL0 and ISTL1 buffers.
3. Write 32-bit hexadecimal value 8000 00FDh to the HcInterruptEnable register. This
will enable all the interrupt events in the register to trigger the hardware interrupt (see
Section 14.1.5).
4. Write 16-bit hexadecimal value 002Dh to the HcHardwareConfiguration register. This
will set up the Host Controller to level triggered and active HIGH interrupt setting (see
Section 14.4.1).
5. Write 0500 0B02h to HcRhDescriptorA and 0000 0000h to HcRhDescriptorB.
6. Write 16-bit hexadecimal value 0680h to the HcControl register to set the ISP1362
into operation mode (see Section 14.1.2).
7. Read the HcRhPortStatus[1] and HcRhPortStatus[2] registers. These registers
contain 32-bit hexadecimal value 0001 0100h (see Section 14.3.4).
8. Connect a full-speed device to one of the downstream ports or use a 1.5 kΩ resistor
to pull up the DP line (to emulate a full-speed device).
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9. Read the HcRhPortStatus[1] and HcRhPortStatus[2] registers. The hexadecimal
value of one of the registers must change to 0001 0101h, indicating that a device
connection has been detected.
10. Write 32-bit hexadecimal value 0000 0102h into either HcRhPortStatus[1] or
HcRhPortStatus[2], depending on the port that is being used.
11. Read the HcRhPortStatus[1] and HcRhPortStatus[2] registers. Depending on which
port the USB device is connected to, one of the registers should contain hexadecimal
value 0001 0103h.
SOF packets should be visible on DP and DM now.
The HcFmNumber register contains the current frame number, which is updated every
milliseconds.
Remark: The generation of SOF is completely performed by the ISP1362 hardware. In
this state of operation, if a PTD is written to the buffer memory, it will be processed and
sent.
11.3 USB ports
The ISP1362 has two USB ports: port 1 and port 2. Port 1 can be configured as a
downstream port (host), an upstream port (device) or a dual-role port (OTG). Port 2 is a
fixed downstream port.
The function of port 1 depends on two input pins of the ISP1362, namely ID and
OTGMODE.
Table 8.
Port 1 function
OTGMODE
ID
X
Function of port 1
OTG
L
H
H
L
host
H
peripheral
In OTG mode, port 2 operates as an internal host. It is not advisable to expose host port 2
to external devices because it will not respond to the SRP and HNP protocols. Besides,
the current capability of VBUS may be different from the OTG port’s. The USB compliance
checklist states that one and only one USB mini-AB receptacle is allowed on an OTG
device.
11.4 Philips Transfer Descriptor (PTD)
PTD provides a communication channel between the HCD and the ISP1362 USB Host
Controller. A PTD consists of a PTD header and a payload data. The size of the PTD
header is 8 bytes, and it contains information required for data transfer, such as data
packet size, transfer status and transfer token types. Payload data to be transferred within
a particular frame must have a PTD as the header (see Figure 22).
The ISP1362 has three types of PTDs: control and bulk transfer (aperiodic transfer) PTD,
interrupt transfer PTD and Isochronous (ISO) transfer PTD.
In the control and bulk transfer PTD and the interrupt transfer PTD, the buffer area is
separated into equal sized blocks that are determined by HcATLBlkSize and
HcINTLBlkSize. For example, if the block size is defined as 32 bytes, the first PTD
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structure in the memory buffer will have an offset of 0 bytes and the second PTD structure
will have an offset of 40 bytes [sum of the block size (32 bytes) and the PTD header size
(8 bytes)]. Because of the fixed block size of the ISP1362 Host Controller, however, even a
PTD with 4 bytes of payload will occupy all the 40 bytes in a block.
In the isochronous PTD, the Host Controller uses a more flexible method to calculate the
PTD offset because each PTD can have a different payload size. The actual amount of
space for the payload, however, must be a multiple of double word. Therefore, a 10 bytes
payload must have a reserved data size of 12 bytes. Take for example there are four PTDs
in the ISTL0 buffer area with payload sizes of 200 bytes, 10 bytes, 1023 bytes and
30 bytes. Then, the offset of each of these PTDs will be as follows:
PTD1 (200 bytes) — offset = 0
PTD2 (10 bytes) — offset = (200 + 8) = 208
PTD3 (1023 bytes) — offset = (200 + 8) + (12 + 8) = 228
PTD4 (30 bytes) — offset = (200 + 8) + (12 + 8) + (1024 + 8) = 1260
The PTD data stored in the Host Controller buffer memory will not be processed, unless
the respective control bits (ATL_Active, INTL_Active, ISTL0_BufferFull or
ISTL1_BufferFull) in HcBufferStatus are set.
The PTD data in the ATL or interrupt buffer memory can be disabled by setting the
respective skip bit in HcATLPTDSkipMap and HcINTLPTDSkipMap. To skip a particular
PTD in the ATL or interrupt buffer, the HCD may set the corresponding bit of the SkipMap
register. For example, setting the HcATLPTDSkipMap register to 0011h will cause the
Host Controller to skip the first and the fifth PTDs in the ATL buffer memory.
Certain fields in the PTD header are used by the Host Controller to inform the HCD about
the status of the transfer. These fields are indicated by the ‘Status Update by HC’ column.
These fields are updated after every transaction to reflect the current status of the PTD.
buffer memory
top
PTD header
PTD data #1
payload data
PTD header
PTD data #2
payload data
PTD header
PTD data #N
payload data
bottom
004aaa121
Fig 22. PTD data stored in the buffer memory
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Table 9.
Bit[1]
Generic PTD structure: bit allocation
7
6
5
4
3
2
1
0
Byte 0
Byte 1
Byte 2
Byte 3
Byte 4
Byte 5
Byte 6
Byte 7
ActualBytes[7:0]
Active
MaxPktSize[7:0]
B3[3]
TotalBytes[7:0]
DirToken[1:0]
CompletionCode[3:0]
EndpointNumber[3:0]
Toggle
Speed
ActualBytes[9:8]
MaxPktSize[9:8]
TotalBytes[9:8]
B5[7]
B5[6]
reserved
reserved
FunctionAddress[6:0]
B7[7:0]
[1] All reserved bits should be set to logic 0.
Table 10. Special fields for ATL, interrupt and ISO
Bit[1]
ATL
Interrupt
reserved
reserved
reserved
ISTL (ISO)
Last
B3[3]
B5[6]
B5[7]
B7[7:0]
reserved
Ping-Pong
Paired
reserved
reserved
StartingFrame
reserved
PollingRate[7:5];
StartingFrame[4:0]
[1] All reserved bits should be set to logic 0.
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Table 11. Generic PTD structure: bit description
Name
Status update Description
by HC
ActualBytes[9:0]
Yes
Yes
This field contains the number of bytes that were transferred for this PTD.
CompletionCode[3:0]
0000
NoError
General Transfer Descriptor (TD) or
isochronous data packet processing
completed with no detected errors.
0001
CRC
The last data packet from the endpoint
contained a Cyclic Redundancy Check
(CRC) error.
0010
0011
BitStuffing
The last data packet from the endpoint
contained a bit stuffing violation.
DataToggleMismatch The last packet from the endpoint had data
toggle Packet ID (PID) that did not match the
expected value.
0100
0101
0110
0111
1000
Stall
TD was moved to the Done queue because
the endpoint returned a STALL PID.
DeviceNot
Responding
The device did not respond to the token (IN)
or did not provide a handshake (OUT).
PIDCheckFailure
UnexpectedPID
DataOverrun
The check bits on PID from the endpoint
failed on data PID (IN) or handshake (OUT).
The received PID was not valid when
encountered, or the PID value is not defined.
The amount of data returned by the endpoint
exceeded either the size of the maximum
data packet allowed from the endpoint (found
in the MaxPacketSize field of ED) or the
remaining buffer size.
1001
DataUnderrun
The endpoint returned is less than
MaxPacketSize and that amount was not
sufficient to fill the specified buffer.
1010
1011
1100
-
reserved
reserved
-
BufferOverrun
During an IN, the Host Controller received
data from the endpoint faster than it could be
written to the system memory.
1101
BufferUnderrun
During an OUT, the Host Controller could not
retrieve data from the system memory fast
enough to keep up with the USB data rate.
Active
Toggle
Yes
Yes
Set to logic 1 by firmware to enable the execution of transactions by the Host
Controller. When the transaction associated with this descriptor is completed,
the Host Controller sets this bit to logic 0, indicating that a transaction for this
element should not be executed when it is next encountered in the schedule.
This bit is used to generate or compare the data PID value (DATA0 or DATA1)
for IN and OUT transactions. It is updated after each successful transmission
or reception of a data packet.
MaxPktSize[9:0]
No
No
This indicates the maximum number of bytes that can be sent to or received
from the endpoint in a single data packet.
EndpointNumber[3:0]
This is the USB address of the endpoint within the function.
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Table 11. Generic PTD structure: bit description …continued
Name
Status update Description
by HC
B3[3] Last (PTD)
No
This indicates that it is the last PTD of a list. Logic 1 means that this PTD is
the last PTD. The last PTD is used only for ISO. This bit is not used in the
interrupt and ATL transfers. The last PTD is indicated by the HcINTLLastPTD
and HcATLLastPTD registers.
Speed (low)
No
This bit indicates the speed of the endpoint.
0 — full-speed
1 — low-speed
TotalBytes[9:0]
No
No
This specifies the total number of bytes to be transferred with this data
structure. This can be greater than MaxPacketSize.
B5[6] Ping-Pong
0 — This is the ping buffer of the paired buffer. Paired must be logic 1.
1 — This is the pong buffer of the paired buffer. Paired must be logic 1.
B5[7] Paired
No
If this bit is set to logic 1, two PTDs of the same endpoint and address can be
made active at the same time. This bit is used with the Ping-Pong bit. The first
paired PTD always starts with Ping = 0. The Pong PTD payload can be sent
out only if the Ping PTD payload is sent out. You can also monitor
RAM_BUFFER _STATUS to see which PTD is currently active on the USB
line.
DirToken[1:0]
No
00 — set up
01 — OUT
10 — IN
11 — reserved
FunctionAddress[6:0]
No
No
This field contains the USB address of the function containing the endpoint
that this PTD refers to.
B7[7:5] PollingRate
B7[4:0] StartingFrame
(interrupt only)
These two fields together select a start frame number (5 bits) and polls the
interrupt device at a rate specified by PollingRate (3 bits); see Section 11.6.
B7[7:0] StartingFrame
(ISO only)
No
The Host Controller compares this byte with the current frame number (can be
accessed from the HcFmNumber register). The PTD will be processed and
sent out only if the starting frame number equals to the current frame number.
11.5 Features of the control and bulk transfer (aperiodic transfer)
• A paired PTD is a special feature that provides high performance single endpoint bulk
transfer and handles set-up enumeration sequence within 1 ms. A paired PTD
consists of two PTDs serving the same endpoint of a device that are set active and
placed in the ATL RAM at the same time. A paired PTD is specially designed for high
performance of a single endpoint. They are identified by hardware by using the
‘Paired’ bit in the PTD.
• Possible to send up to a maximum of 18 USB bulk packets in 1 ms frame
(1.152 MB/s) by using the paired PTD feature.
• Provides the status of every transfer endpoints (PTD) by monitoring the
HcATLPTDDoneMap of the ISP1362. This register provides information on which
PTD transfers are complete.
• Sets the IRQ after the user-specified number of transfers is done.
• Skips any PTD that is wasting bandwidth by using HcATLPTDSkipMap.
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11.5.1 Sending a USB device request (Get Descriptor)
This section provides an example on how a USB transfer descriptor ‘Get Descriptor’
(commonly used in device enumeration) is used to illustrate the ISP1362 PTD application.
To perform this example, make sure the ISP1362 is in the operational state, and then
connect a USB device (for example, a USB mouse) to a port.
Remark: For details on the USB device request, refer to Chapter 9 of Ref. 2 “Universal
Serial Bus Specification Rev. 2.0”.
11.5.1.1 Step 1
Set the HcATLBlkSize, HcATLPTDSkipMap and HcATLLastPTD registers to 0008h,
FFFEh and 0001h, respectively.
11.5.1.2 Step 2
A PTD is then constructed based on the information given in the following sample code.
This sample code places information into the correct bit location within the 8 bytes of the
PTD structure.
ActualBytes (10 bits) = 0x00
CompletionCode (4 bits) = 0x0F
Active (1 bit) = 1
Toggle (1 bit) = 0
MaxPacketSize (10 bits) = 8
EndpointNumber (4 bits) = 0
Speed (1 bit) = 0 (full-speed; use 1 for low-speed)
DirToken (2 bits) = 0 (setup token)
TotalBytes (10 bits) = 8
CompletedPTD
0xF800, 0x0008, 0x0008, 0x0000
11.5.1.3 Step 3
This array is then appended with an 8 bytes payload that specifies the type of request the
Host Controller wants to send. For example, for Get Descriptor, the payload is 0680h,
0100h, 0000h, 0012h.
11.5.1.4 Step 4
The 16 bytes of data is now a complete PTD with an accompanying payload. This array is
then copied into the ATL buffer area. Table 12 shows the ATL buffer area.
Table 12. ATL buffer area
Offset
0
1
2
3
4
5
6
7
Data
F800h
0008h
0008h
0000h
0680h
0100h
0000h
0012h
11.5.1.5 Step 5
After copying data into the ATL buffer, the Host Controller must be notified that the ATL
buffer is now full and ready to be processed. The ATL_Active bit of the HcBufferStatus
register must be set to logic 1 to inform the Host Controller that the data in the ATL buffer
is now ready for processing. Once the ATL_Active bit of the HcBufferStatus register is set,
the USB packet is sent out. The active bit in the PTD is cleared once the PTD is sent.
Depending on the outcome of the USB transfer, the 4-bit completion code is updated.
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11.6 Features of the interrupt transfer
• An interrupt transaction is periodically sent out, according to the ‘interrupt polling rate’
as defined in the PTD.
• An interrupt transaction causes an interrupt to the CPU only if the transaction is
ACK-ed or has error conditions, such as STALL or no respond. An ACK condition
occurs if data is received on the IN token or data is sent out on the OUT token.
• An interrupt is activated only once every ms as long as there is ACK for different
interrupt transactions in the interrupt transfer buffer.
• Each interrupt transfer (PTD) placed in the INTL buffer can automatically hold or send
data for more than 1 ms. This can be done using the parameters in the PTD.
Table 13. Interrupt polling
N bits [7:5]
StartingFrame N[4:0]
frame 0 to 31
frame 0 to 31
frame 0 to 31
frame 0 to 31
frame 0 to 31
frame 0 to 31
frame 0 to 31
frame 0 to 31
Interrupt polling interval (2N) in ms
0
1
2
3
4
5
6
7
1
2
4
8
16
32
64
128
11.7 Features of the Isochronous (ISO) transfer
• Supports multi-buffering by using the ISTL0 or ISTL1 toggling mechanism.
• The CPU can decide (in ms) how fast it can serve the ISP1362. This gives the CPU
the flexibility to decide how much time it takes to read and fill in the ISO data.
• The ISTL buffer can be updated on-the-fly by using the direct addressing memory
architecture.
11.8 Overcurrent protection circuit
The ISP1362 has a built-in overcurrent protection circuitry. You can enable or disable this
feature by setting or resetting AnalogOCEnable (bit 10) of the HcHardwareConfiguration
register. If this feature is disabled, it is assumed that there is an external overcurrent
protection circuitry.
11.8.1 Using internal overcurrent detection circuit
An application using the internal overcurrent detection circuit and internal 15 kΩ pull-down
resistors is shown in Figure 23, where DMn denotes either OTG_DM1 or H_DM2, while
DPn denotes either OTG_DP1 or H_DP2. In this example, the HCD must set both
AnalogOCEnable and ConnectPullDown_DS1 (bit 10 and bit 12 of the
HcHardwareConfiguration register, respectively) to logic 1.
When H_OCn detects an overcurrent status on a downstream port, H_PSWn will output
HIGH to turn off the 5 V power supply to downstream port VBUS. When there is no such
detection, H_PSWn will output LOW to turn on the 5 V power supply to downstream port
VBUS
.
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In general applications, you can use a P-channel MOSFET as the power switch for VBUS
.
Connect the 5 V power supply to the source pole of the P-channel MOSFET, VBUS to the
drain pole, and H_PSWn to the gate pole. This voltage drop (∆V) across the drain and
source poles can be called the overcurrent trip voltage. For the internal overcurrent
detection circuit, a voltage comparator has been designed-in, with a nominal voltage
threshold of 75 mV. Therefore, when the overcurrent trip voltage (∆V) exceeds the voltage
threshold, H_PSWn will output a HIGH level to turn off the P-channel MOSFET. If the
P-channel MOSFET has RDSon of 150 mΩ, the overcurrent threshold will be 500 mA. The
selection of a P-channel MOSFET with a different RDSon will result in a different
overcurrent threshold.
V
DD(5V)
PSU_5V
source
gate
C18
0.1 µF
R31
10 kΩ
P_channel
MOSFET
H_PSWn
H_OCn
drain
FB2
(1)
C41
C17
0.1 µF
1
2
3
4
5
6
DGND
DGND
V
BUS
DM
DP
GND
chassis
chassis
004aaa148
DGND
(1) 100 µF for the host port, or 4.7 µF for the OTG port.
Fig 23. Using internal overcurrent detection circuit
11.8.2 Using external overcurrent detection circuit
When VCC (pin 56) is connected to the 3.3 V power supply instead of the 5 V power
supply, the internal overcurrent detection circuit cannot be used. An external overcurrent
detection circuit must be used instead. Nevertheless, regardless of the VCC connection, an
external overcurrent detection circuit can be used from time to time. To use an external
overcurrent detection circuit, set AnalogOCEnable, bit 10 of register
HcHardwareConfiguration, to logic 0. By default, this bit is set to logic 0 after reset.
Therefore, the HCD does not need to clear this bit.
Figure 24 shows how to use an external overcurrent detection circuit.
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OC detection
PSU_5V
V
IN
OC
H_OCn
FB2
V
EN
H_PSWn
OUT
(1)
C41
C17
0.1 µF
1
2
3
4
5
6
DGND
DGND
V
BUS
DM
DP
GND
chassis
chassis
004aaa149
DGND
(1) 100 µF for the host port, or 4.7 µF for the OTG port.
Fig 24. Using external overcurrent detection circuit
11.8.3 Overcurrent detection circuit using internal charge pump in OTG mode
When port 1 is operating in OTG mode, you may choose to use the internal charge pump
to provide 5 V VBUS, or supply VBUS from an external source. In this mode, the overcurrent
condition is detected by a drop in VBUS that will be sensed by the built-in comparator. The
overcurrent condition causes a change in the A_VBUS_VLD bit of the OtgStatus register.
The software must clear the DRV_VBUS bit in the OtgControl register when it detects the
A_VBUS_VLD bit turning to logic 0.
H_OCn
FB2
V
BUS
(1)
C41
C17
0.1 µF
1
2
3
4
5
6
DGND
DGND
V
BUS
DM
DP
GND
chassis
chassis
n.c.
H_PSWn
004aaa150
DGND
(1) 100 µF for the host port, or 4.7 µF for the OTG port.
Fig 25. Using internal charge pump
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11.8.4 Overcurrent detection circuit using external 5 V power source in OTG mode
In OTG mode using external 5 V power source for VBUS, the circuit and the operation are
the same as that for non-OTG mode (see Section 11.8.1 and Section 11.8.2).
11.9 ISP1362 Host Controller power management
In the ISP1362, the Host Controller and the Peripheral Controller are suspended and
woken up individually. The H_SUSPEND/H_WAKEUP and D_SUSPEND/D_WAKEUP
pins must be pulled-up by a large resistor (100 kΩ). In the suspend state, these pins are
HIGH. To wake up the Host Controller, these pins must be pulled LOW.
The ISP1362 can partially be suspended (only the Host Controller or only the Peripheral
Controller). In the partially suspended state, the clock circuit and PLL continue to work. To
save power, both the Host Controller and the Peripheral Controller must be set to suspend
mode.
The Host Controller can be suspended by writing 06C0h to the HcControl register.
The Host Controller can be set awake by one of the following ways:
• A LOW pulse on the H_SUSPEND/H_WAKEUP pin, minimum length of pulse is
25 ns.
• A LOW pulse on the chip select (CS) pin, minimum length of pulse is 25 ns.
• A resume signal by USB devices connected to the downstream port.
On waking up from the suspend state, the clock to the Host Controller will sustain for
5 ms. Within this 5 ms, the HCD must set the Host Controller to operational mode by
writing 0680h to the HcControl register. If the HcControl register remains in the suspend
state (06C0h) after waking up the Host Controller, the Host Controller will return to the
suspend state after 5 ms.
12. USB Peripheral Controller
The design of the Peripheral Controller in the ISP1362 is compatible with the NXP
ISP1181B USB full-speed interface device IC. The functionality of the Peripheral
Controller in the ISP1362 is similar to the ISP1181B in 16-bit bus mode. In addition, the
command and register sets are also the same.
In general, the Peripheral Controller in the ISP1362 provides 16 endpoints for the USB
device implementation. Each endpoint can be allocated RAM space in the on-chip ping
pong buffer RAM.
Remark: The ping pong buffer RAM for the Peripheral Controller is independent of the
buffer RAM for the Host Controller. When the buffer RAM is full, the Peripheral Controller
transfers the data in the buffer RAM to the USB bus. When the buffer RAM is empty, an
interrupt is generated to notify the microprocessor to feed in data. The transfer of data
between a microprocessor and the Peripheral Controller can be done in either
Programmed I/O (PIO) mode or in Direct Memory Access (DMA) mode.
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12.1 Peripheral Controller data transfer operation
The following sessions explain how the Peripheral Controller in the ISP1362 handles an
IN data transfer and an OUT data transfer. An IN data transfer means transfer from the
ISP1362 to an external USB host (through the upstream port), and an OUT transfer
means transfer from an external USB host to the ISP1362. In device mode, the ISP1362
acts as a USB device.
12.1.1 IN data transfer
1. The arrival of the IN token is detected by the Serial Interface Engine (SIE) by
decoding the Packet Identifier (PID).
2. The SIE also checks the device number and the endpoint number to verify whether
they are okay.
3. If the endpoint is enabled, the SIE checks the contents of the DcEndpointStatus
register (ESR). If the endpoint is full, the contents of the buffer memory are sent
during the data phase else an NAK handshake is sent.
4. After the data phase, the SIE expects a handshake (ACK) from the host (except for
ISO endpoints).
5. On receiving the handshake (ACK), the SIE updates the contents of the
DcEndpointStatus and DcInterrupt registers, which in turn generates an interrupt to
the microprocessor. For ISO endpoints, the DcInterrupt register is updated as soon as
data is sent because there is no handshake phase.
6. On receiving an interrupt, the microprocessor reads the DcInterrupt register. It knows
which endpoint has generated the interrupt and reads the contents of the
corresponding ESR. If the buffer is empty, it fills up the buffer so that data can be sent
by the SIE at the next IN token phase.
12.1.2 OUT data transfer
1. The arrival of the OUT token is detected by the SIE by decoding the PID.
2. The SIE checks the device and endpoint numbers to verify whether they are okay.
3. If the endpoint is enabled, the SIE checks the contents of the ESR. If the endpoint is
empty, the data from USB is stored in the buffer memory during the data phase else a
NAK handshake is sent.
4. After the data phase, the SIE sends a handshake (ACK) to the host (except for ISO
endpoints).
5. The SIE updates the contents of the DcEndpointStatus register and the DcInterrupt
register, which in turn generates an interrupt to the microprocessor. For ISO
endpoints, the DcInterrupt register is updated as soon as data is received because
there is no handshake phase.
6. On receiving an interrupt, the microprocessor reads the DcInterrupt register. It knows
which endpoint has generated the interrupt and reads the content of the
corresponding ESR. If the buffer is full, it empties the buffer so that data can be
received by the SIE at the next OUT token phase.
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12.2 Device DMA transfer
12.2.1 DMA for an IN endpoint (internal Peripheral Controller to the external USB
host)
When the internal DMA handler is enabled and at least one buffer (ping or pong) is free,
the DREQ2 line is asserted. The external DMA controller then starts negotiating for
control of the bus. As soon as it has access, it asserts the DACK2 line and starts writing
data. The burst length is programmable. When the number of bytes equal to the burst
length has been written, the DREQ2 line is de-asserted. As a result, the DMA controller
de-asserts the DACK2 line and releases the bus. At that moment, the whole cycle restarts
for the next burst.
When the buffer is full, the DREQ2 line is de-asserted and the buffer is validated (which
means that it is sent to the host at the next IN token). When the DMA transfer is
terminated, the buffer is also validated (even if it is not full). A DMA transfer is terminated
when any of the following conditions is met:
• The DMA count is complete.
• DMAEN = 0.
Remark: If the OneDMA bit in the HcHardwareConfiguration register is set to logic 1,
Peripheral Controller DMA controller handshake signals DREQ2 and DACK2 are routed to
DREQ1 and DACK1.
12.2.2 DMA for OUT endpoint (external USB host to internal Peripheral Controller)
When the internal DMA handler is enabled and at least one buffer is full, the DREQ2 line
is asserted. The external DMA controller then starts negotiating for control of the bus, and
as soon as it has access, it asserts the DACK2 line and starts reading data. The burst
length is programmable. When the number of bytes equal to the burst length has been
read, the DREQ2 line is de-asserted. As a result, the DMA controller de-asserts the
DACK2 line and releases the bus. At that moment, the whole cycle restarts for the next
burst. When all the data is read, the DREQ2 line is de-asserted and the buffer is cleared
(this means that it can be overwritten when a new packet arrives). A DMA transfer is
terminated when any of the following conditions are met:
• The DMA count is complete.
• DMAEN = 0.
Remark: If the OneDMA bit in the HcHardwareConfiguration register is set to logic 1,
Peripheral Controller DMA controller handshake signals DREQ2 and DACK2 are routed to
DREQ1 and DACK1.
When the DMA transfer is terminated, the buffer is also cleared (even if data is not
completely read) and the DMA handler is automatically disabled. For the next DMA
transfer, the DMA controller as well as the DMA handler must be re-enabled.
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12.3 Endpoint description
12.3.1 Endpoints with programmable buffer memory size
Each USB device is logically composed of several independent endpoints. An endpoint
acts as a terminus of a communication flow between the USB host and the USB device. At
design time, each endpoint is assigned a unique number (endpoint identifier, see
Table 14). The combination of the device address (given by the host during enumeration),
the endpoint number, and the transfer direction allows each endpoint to be uniquely
referenced.
The Peripheral Controller has 16 endpoints: endpoint 0 (control IN and OUT) and 14
configurable endpoints, which can individually be defined as interrupt, bulk or
isochronous: IN or OUT. Each enabled endpoint has an associated buffer memory, which
can be accessed either by using programmed I/O interface mode or by using DMA mode.
12.3.2 Endpoint access
Table 14 lists the endpoint access modes and programmability. All endpoints support I/O
mode access. Endpoints 1 to 14 also support DMA mode access. The Peripheral
Controller buffer memory DMA access is selected and enabled using bits EPIDX[3:0] and
DMAEN of the DcDMAConfiguration register. A detailed description of the Peripheral
Controller DMA operation is given in Section 12.4.
Table 14. Endpoint access and programmability
Endpoint
identifier
Buffer memory size Double
PIO mode
access
DMA mode
access
Endpoint type
(bytes)[1]
buffering
0
64 (fixed)
no
yes
no
control OUT[2][3]
control IN[2][3]
programmable
0
64 (fixed)
no
yes
no
1 to 14
programmable
supported
supported
supported
[1] The total amount of the buffer memory storage allocated to enabled endpoints must not exceed 2462 bytes.
[2] IN: input for the USB host (Peripheral Controller transmits); OUT: output from the USB host (Peripheral Controller receives).
[3] The data flow direction is determined by the EPDIR bit of the DcEndpointConfiguration register.
12.3.3 Endpoint buffer memory size
The size of the buffer memory determines the maximum packet size that the hardware
can support for a given endpoint. Only enabled endpoints are allocated space in the
shared buffer memory storage, disabled endpoints have zero bytes. Table 15 lists the
programmable buffer memory sizes.
The following bits of the DcEndpointConfiguration register (ECR) affect the buffer memory
allocation:
• Endpoint enable bit (FIFOEN)
• Size bits of an enabled endpoint (FFOSZ[3:0])
• Isochronous bit of an enabled endpoint (FFOISO)
Remark: A register change that affects the allocation of the shared buffer memory storage
among endpoints must not be made while valid data is present in any buffer memory of
the enabled endpoints. Such changes renders all buffer memory contents undefined.
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Table 15. Programmable buffer memory size
FFOSZ[3:0]
Non-isochronous
8 bytes
Isochronous
16 bytes
0000
0001
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
16 bytes
32 bytes
64 bytes
reserved
reserved
reserved
reserved
reserved
reserved
reserved
reserved
reserved
reserved
reserved
reserved
32 bytes
48 bytes
64 bytes
96 bytes
128 bytes
160 bytes
192 bytes
256 bytes
320 bytes
384 bytes
512 bytes
640 bytes
768 bytes
896 bytes
1023 bytes
Each programmable buffer memory can independently be configured by using its ECR,
but the total physical size of all enabled endpoints (IN plus OUT) must not exceed
2462 bytes.
Table 16 shows an example of a configuration fitting in the maximum available space of
2462 bytes. The total number of logical bytes in the example is 1311. The physical storage
capacity used for double buffering is managed by the device hardware and is transparent
to the user.
Table 16. Memory configuration example
Physical size (bytes) Logical size (bytes) Endpoint description
64
64
control IN (64 bytes fixed)
64
64
control OUT (64 bytes fixed)
double-buffered 1023 bytes isochronous endpoint
16 bytes interrupt OUT
2046
16
1023
16
16
16
16 bytes interrupt IN
128
128
64
double-buffered 64 bytes bulk OUT
double-buffered 64 bytes bulk IN
64
12.3.4 Endpoint initialization
In response to standard USB request Set Interface, firmware must program all the 16
ECRs of the Peripheral Controller in sequence (see Table 14), whether endpoints are
enabled or not. The hardware then automatically allocates the buffer memory storage
space.
If all endpoints have successfully been configured, firmware must return an empty packet
to the control IN endpoint to acknowledge success to the host. If there are errors in the
endpoint configuration, firmware must stall the control IN endpoint.
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When reset by hardware or by the USB bus occurs, the Peripheral Controller disables all
endpoints and clears all ECRs, except the control endpoint that is fixed and always
enabled.
An endpoint initialization can be done at any time. It is, however, valid only after
enumeration.
12.3.5 Endpoint I/O mode access
When an endpoint event occurs (a packet is transmitted or received), the associated
endpoint interrupt bits (EPn) of the DcInterrupt register (IR) are set by the SIE. The
firmware then responds to the interrupt and selects the endpoint for processing.
The endpoint interrupt bit is cleared by reading the DcEndpointStatus register (ESR). The
ESR also contains information on the status of the endpoint buffer.
For an OUT (= receive) endpoint, the packet length and packet data can be read from the
Peripheral Controller by using the Read Buffer command. When the whole packet has
been read, firmware sends a Clear Buffer command to enable the reception of new
packets.
For an IN (= transmit) endpoint, the packet length and data to be sent can be written to the
Peripheral Controller by using the Write Buffer command. When the whole packet has
been written to the buffer, firmware sends a Validate Buffer command to enable data
transmission to the host.
12.3.6 Special actions on control endpoints
Control endpoints require special firmware actions. The arrival of a set-up packet flushes
the IN buffer and disables the Validate Buffer and Clear Buffer commands for the control
IN and OUT endpoints. The microprocessor must re-enable these commands by sending
an acknowledge set-up command to both the control endpoints.
This ensures that the last set-up packet stays in the buffer and that no packets can be sent
back to the host, until the microprocessor has explicitly acknowledged that it has received
the set-up packet.
12.4 Peripheral Controller DMA transfer
Direct Memory Access (DMA) is a method to transfer data from one location to another in
a computer system, without the intervention of the CPU. Many different implementations
of DMA exist. The Peripheral Controller supports 8237 compatible mode.
8237 compatible mode: Based on the DMA subsystem of the IBM personal computers
(PC, AT and all its successors and clones). This architecture uses the Intel 8237 DMA
controller and has separate address spaces for memory and I/O.
The following features are supported:
• Single-cycle or burst transfers (up to 16 bytes per cycle)
• Programmable transfer direction (read or write)
• Multiple End-Of-Transfer (EOT) sources: internal conditions, short or empty packet
• Programmable signal levels on pins DREQ2 and DACK2
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12.4.1 Selecting an endpoint for the DMA transfer
The target endpoint for DMA access is selected using bits EPDIX[3:0] of the
DcDMAConfiguration register, as shown in Table 17. The transfer direction (read or write)
is automatically set by the EPDIR bit in the associated ECR, to match the selected
endpoint type (OUT endpoint: read; IN endpoint: write).
Automatically asserting input DACK2 selects the endpoint specified in the
DcDMAConfiguration register, regardless of the current endpoint used for I/O mode
access.
Table 17. Endpoint selection for the DMA transfer
Endpoint
identifier
EPIDX[3:0]
Transfer direction
EPDIR = 0
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
OUT: read
EPDIR = 1
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
IN: write
1
0010
0011
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
2
3
4
5
6
7
8
9
10
11
12
13
14
12.4.2 8237 compatible mode
This mode is selected by clearing the DAKOLY bit of the DcHardwareConfiguration
register (see Table 115). The pin functions for this mode are shown in Table 18.
Table 18. 8237 compatible mode: pin functions
Symbol Description
I/O
Function
DREQ2 DMA request of Peripheral
Controller
O
Peripheral Controller requests a DMA
transfer
DACK2 DMA acknowledge of Peripheral
Controller
I
DMA controller confirms the transfer
EOT
RD
end of transfer
read strobe
I
I
DMA controller terminates the transfer
instructs the Peripheral Controller to put
data on the bus
WR
write strobe
I
instructs the Peripheral Controller to get
data from the bus
The DMA subsystem of an IBM-compatible PC is based on the Intel 8237 DMA controller.
It operates as a ‘fly-by’ DMA controller. Data is not stored in the DMA controller, but it is
transferred between an I/O port and a memory address. A typical example of the
Peripheral Controller in 8237 compatible DMA mode is given in Figure 26.
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The 8237 has two control signals for each DMA channel: DREQ (DMA Request) and
DACK (DMA Acknowledge). General control signals are HRQ (Hold Request) and HLDA
(Hold Acknowledge). The bus operation is controlled by MEMR (Memory Read), MEMW
(Memory Write), IOR (I/O Read) and IOW (I/O Write).
MEMR
RAM
D[15:0]
MEMW
DMA
CONTROLLER
8237
CPU
ISP1362
DREQ2
DACK2
DREQ
HRQ
HRQ
HLDA
DACK
HLDA
RD
IOR
WR
IOW
004aaa047
Fig 26. Peripheral Controller in 8327 compatible DMA mode
The following example shows the steps that occur in a typical DMA transfer:
1. The Peripheral Controller receives a data packet in one of its endpoint buffer memory.
The packet must be transferred to memory address 1234h.
2. The Peripheral Controller asserts the DREQ2 signal requesting the 8237 for a DMA
transfer.
3. The 8237 requests the CPU to release the bus, by asserting the HRQ signal.
4. After completing the current instruction cycle, the CPU places bus control signals
(MEMR, MEMW, IOR and IOW) and address lines in 3-state and asserts HLDA to
inform the 8237 that it has control of the bus.
5. The 8237 now sets its address lines to 1234h and activates the MEMW and IOR
control signals.
6. The 8237 asserts DACK to inform the Peripheral Controller that it will start a DMA
transfer.
7. The Peripheral Controller now places the word to be transferred on the data bus lines
because its RD signal was asserted by the 8237.
8. The 8237 waits one DMA clock period and then de-asserts MEMW and IOR. This
latches and stores the word at the desired memory location. It also informs the
Peripheral Controller that the data on the bus lines has been transferred.
9. The Peripheral Controller de-asserts the DREQ2 signal to indicate to the 8237 that
DMA is no longer needed. In single cycle mode, this is done after each byte or word;
in burst mode, following the last transferred byte or word of the DMA cycle.
10. The 8237 de-asserts the DACK output, indicating that the Peripheral Controller must
stop placing data on the bus.
11. The 8237 places bus control signals (MEMR, MEMW, IOR and IOW) and address
lines in 3-state and de-asserts the HRQ signal, informing the CPU that it has released
the bus.
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12. The CPU acknowledges control of the bus by de-asserting HLDA. After activating the
bus control lines (MEMR, MEMW, IOR and IOW) and address lines, the CPU
resumes the execution of instructions.
For a typical bulk transfer, the preceding process is repeated 32 times, once for each
word. After each word, the DcAddress register in the DMA controller is incremented by
two and the byte counter is decremented by two. When using the 16-bit DMA, the number
of transfers is 32, and address incrementing and byte counter decrementing is done by
two for each word.
12.4.3 End-Of-Transfer conditions
12.4.3.1 Bulk endpoints
A DMA transfer to or from a bulk endpoint can be terminated by any of the following
conditions (bit names refer to the DcDMAConfiguration register, see Table 119 and
Table 120):
• The DMA transfer completes as programmed in the DcDMACounter register
(CNTREN = 1).
• A short packet is received on an enabled OUT endpoint (SHORTP = 1).
• DMA operation is disabled by clearing the DMAEN bit.
DcDMACounter register — An EOT from the DcDMACounter register is enabled by
setting bit CNTREN of the DcDMAConfiguration register. The Peripheral Controller has a
16-bit DcDMACounter register, which specifies the number of bytes to be transferred.
When DMA is enabled (DMAEN = 1), the internal DMA counter is loaded with the value
from the DcDMACounter register. When the internal counter completes the transfer as
programmed in the DMA counter, an EOT condition is generated and the DMA operation
stops.
Short packet — Normally, the transfer byte count must be set using a control endpoint
before any DMA transfer takes place. When a short packet has been enabled as EOT
indicator (SHORTP = 1), the transfer size is determined by the presence of a short packet
in data. This mechanism permits the use of a fully autonomous data transfer protocol.
When reading from an OUT endpoint, reception of a short packet at an OUT token will
stop the DMA operation after transferring the data bytes of this packet.
Table 19. Summary of EOT conditions for a bulk endpoint
EOT condition
OUT endpoint
IN endpoint
DcDMACounter register
transfer completes as
programmed in the
transfer completes as
programmed in the
DcDMACounter register
DcDMACounter register
Short packet
short packet is received and
transferred
counter reaches zero in the
middle of the buffer
DMAEN bit of the
DMAEN = 0[1]
DMAEN = 0[1]
DcDMAConfiguration register
[1] The DMA transfer stops. No interrupt, however, is generated.
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12.4.3.2 Isochronous endpoints
A DMA transfer to or from an isochronous endpoint can be terminated by any of the
following conditions (bit names refer to the DcDMAConfiguration register, see Table 119
and Table 120):
• The DMA transfer completes as programmed in the DcDMACounter register
(CNTREN = 1).
• An End-Of-Packet (EOP) signal is detected.
• DMA operation is disabled by clearing bit DMAEN.
Table 20. Recommended EOT usage for isochronous endpoints
EOT condition
OUT endpoint
IN endpoint
DcDMACounter register zero
do not use
preferred
12.5 ISP1362 Peripheral Controller suspend and resume
12.5.1 Suspend conditions
The Peripheral Controller in the ISP1362 detects a USB suspend condition in either of the
following cases:
• Constant idle state is present on the USB bus for 3 ms.
• VBUS is lost.
Bus-powered devices that are suspended must not consume more than 500 µA of current.
This is achieved by shutting down the power to system components or supplying them
with a reduced voltage.
The steps leading the Peripheral Controller to the suspend state are as follows:
1. In the event of no SOF for 3 ms, the Peripheral Controller in the ISP1362 sets
bit SUSPND of the DcInterrupt register. This will generate an interrupt if bit IESUSP of
the DcInterruptEnable register is set.
2. When the firmware detects a suspend condition (through IESUSP), it must prepare all
system components for the suspend state:
a. All the signals connected to the Peripheral Controller in the ISP1362 must enter
appropriate states to meet the power consumption requirements of the suspend
state.
b. All the input pins of the Peripheral Controller in the ISP1362 must have a CMOS
logic 0 or logic 1 level.
3. In the interrupt service routine, the firmware must check the current status of the USB
bus. When bit BUSTATUS of the DcInterrupt register is logic 0, the USB bus has left
suspend mode and the process must be aborted. Otherwise, the next step can be
executed.
4. To meet the suspend current requirements for a bus-powered device, internal clocks
must be switched off by clearing bit CLKRUN of the DcHardwareConfiguration
register.
5. When firmware has set and cleared the GOSUSP bit of the DcMode register, the
Peripheral Controller in the ISP1362 enters the suspend state. It sets the
D_SUSPEND/D_WAKEUP pin to HIGH and switches off internal clocks after 2 ms.
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The Peripheral Controller in the ISP1362 will remain in the suspend state for at least 5 ms,
before responding to external wake-up events, such as global resume, bus traffic, CS
active or LOW pulse on the D_SUSPEND/D_WAKEUP pin.
Figure 27 shows a typical timing diagram for the Peripheral Controller suspend and
resume operations.
A
D
> 5 ms
10 ms
idle state
K-state
USB bus
INT2
> 3 ms
suspend
interrupt
resume
interrupt
B
GOSUSP (bit)
D_SUSPEND/D_WAKEUP
0.5 ms to 3.5 ms
1.8 ms to
2.2 ms
CS
C
004aaa483
Fig 27. Suspend and resume timing
In Figure 27:
A — indicates the point at which the USB bus goes to the idle state.
B — after detecting the suspend interrupt, set and clear the GOSUSP bit in the Mode
register.
C — indicates resume condition, which can be a resume signal from the host, a LOW
pulse on the D_SUSPEND/D_WAKEUP pin, or a LOW pulse on the CS pin.
D — indicates remote wake-up. The ISP1362 will drive a K-state on the USB bus for
10 ms after the D_SUSPEND/D_WAKEUP pin goes LOW or the CS pin goes LOW.
12.5.2 Resume conditions
Wake-up from the suspend state is initiated either by the USB host or by the application:
• USB host: drives a K-state on the USB bus (global resume).
• Application: remote wake-up using a LOW pulse on pin D_SUSPEND/D_WAKEUP or
a LOW pulse on pin CS (if enabled using bit WKUPCS of the
DcHardwareConfiguration register).
The steps of a wake-up sequence are as follows:
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1. The internal oscillator and the PLL multiplier are re-enabled. When stabilized, clock
signals are routed to all internal circuits of the Peripheral Controller in the ISP1362.
2. The D_SUSPEND/D_WAKEUP pin goes LOW, and the RESUME bit of the
DcInterrupt register is set. This will generate an interrupt if bit IERESUME of the
DcInterruptEnable register is set.
3. After 5 ms of starting the wake-up sequence, the Peripheral Controller in the ISP1362
resumes its normal functionality (this can be set to 100 µs by setting pin TEST0 to
HIGH).
4. In a remote wake-up, the Peripheral Controller in the ISP1362 drives a K-state on the
USB bus for 10 ms.
5. The application restores itself and other system components to normal operating
mode.
6. After wake-up, internal registers of the Peripheral Controller in the ISP1362 are read
and write-protected to prevent corruption by inadvertent writing during power-up of
external components. The firmware must send an Unlock Device command to the
Peripheral Controller in the ISP1362 to restore its full functionality.
13. OTG registers
Table 21. OTG Control registers overview
Command (Hex)
Register
Width
References
Functionality
Read
62
Write
E2
OtgControl
16
16
16
16
32
32
Section 13.1 on page 60 OTG operation registers
Section 13.2 on page 62
67
N/A
E8
OtgStatus
68
OtgInterrupt
OtgInterruptEnable
OtgTimer
Section 13.3 on page 63
69
E9
Section 13.4 on page 65
6A
6C
EA
Section 13.5 on page 66
EC
OtgAltTimer
Section 13.6 on page 67
13.1 OtgControl register (R/W: 62h/E2h)
Code (Hex): 62 — read
Code (Hex): E2 — write
Table 22. OtgControl register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
reserved
OTG_SE0_
EN
A_SRP_
DET_EN
A_SEL_
SRP
SEL_HC_
DC
Reset
Access
Bit
-
-
-
-
-
-
-
0
R/W
3
0
R/W
2
0
R/W
1
1
R/W
0
-
5
7
6
4
Symbol
LOC_
PULLDN_
DM
LOC_
A_RDIS_
LOC_
CONN
SEL_CP_ DISCHRG_
CHRG_
VBUS
DRV_
VBUS
PULLDN_ LCON_EN
DP
EXT
VBUS
Reset
1
1
0
0
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
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Table 23. OtgControl register: bit description
Bit
Symbol
Description
15 to 12
11
-
reserved
OTG_SE0_
EN
This bit is used by the Host Controller to send SE0 on remote connect.
0 — no SE0 sent on remote connect detection
1 — SE0 (bus reset) sent on remote connect detection
Remark: This bit is normally set when the B-device goes into the
b_wait_acon state (recommended sequence: LOC_CONN = 0 →
DELAY → 50 µs → OTG_SE0_EN = 1 → SEL_HC_DC = 0) and is
cleared when it comes out of the b_wait_acon state.
10
9
A_SRP_DET This bit is for the A-device only. If set, the A_SRP_DET bit in the
_EN
OtgInterrupt register will be set on detecting an SRP event.
0 — disable
1 — enable
A_SEL_SRP This bit is for the A-device to select a method to detect the SRP event
(VBUS pulsing or data line pulsing).
0 — A-device responds to the VBUS pulsing
1 — A-device responds to the data line pulsing
8
SEL_HC_DC This bit is used to select either the Peripheral Controller or the Host
Controller that interfaces with the transceiver.
0 — Host Controller SIE is connected to the OTG transceiver
1 — Peripheral Controller SIE is connected to the OTG transceiver
7
6
5
LOC_
PULLDN_DM
0 — disconnects the on-chip pull-down resistor on DM of the OTG port
1 — connects the on-chip pull-down resistor on DM of the OTG port
0 — disconnects the on-chip pull-down resistor on DP of the OTG port
1 — connects the on-chip pull-down resistor on DP of the OTG port
LOC_
PULLDN_DP
A_RDIS_
LCON_EN
This bit is for the A-device only. If set, the chip will automatically enable
its pull-up resistor on DP on detecting a remote disconnect event. If
cleared, the DP pull-up is controlled by the LOC_CONN bit.
0 — disable
1 — enable
Remark: This bit is normally set when the A-device goes into the
a_suspend state and is cleared when it comes out of the a_suspend
state. The LOC_CONN bit must be set before clearing this bit.
4
3
LOC_CONN 0 — disconnect the on-chip pull-up resistor on DP of the OTG port
1 — connect the on-chip pull-up resistor on DP of the OTG port
SEL_CP_
EXT
This bit is for the A-device only. This bit is used to choose the power
source to drive VBUS
.
0 — use on-chip charge pump to drive VBUS
1 — use external power source (5 V) to drive VBUS
Remark: When using the external power source, the H_PSW1 pin
serves as the power switch that is controlled by the DRV_VBUS bit of
this register.
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Table 23. OtgControl register: bit description …continued
Bit
Symbol
Description
2
DISCHRG_
VBUS
This bit is for the B-device only. If set, it will enable a pull-down resistor
on VBUS, which will help to speed up discharging of VBUS below session
end threshold voltage.
0 — disable
1 — enable
1
0
CHRG_VBUS This bit is for the B-device only. If set, it will charge VBUS through a
resistor.
0 — disable charging VBUS of the OTG port
1 — enable charging VBUS of the OTG port
DRV_VBUS
This bit is used to enable the on-chip charge pump or external power
source to drive VBUS. For the B-device, it shall not enable this bit at any
time.
0 — disable driving VBUS of the OTG port
1 — enable driving VBUS of the OTG port
13.2 OtgStatus register (R: 67h)
Code (Hex): 67 — read only
Table 24. OtgStatus register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
reserved
SE0_2MS
reserved
-
-
-
-
-
-
-
-
-
-
-
-
0
R
1
-
-
0
7
6
5
4
3
2
Symbol
reserved
RMT_
CONN
B_SESS_
VLD
A_SESS_
VLD
B_SESS_
END
A_VBUS_
VLD
ID_REG
Reset
-
-
-
-
0
0
0
1
0
1
Access
R
R
R
R
R
R
Table 25. OtgStatus register: bit description
Bit
Symbol
-
Description
15 to 10
9
reserved
SE0_2MS
0 — bus is in SE0 for less than 2 ms
1 — bus is in SE0 for more than 2 ms
reserved
8 to 6
5
-
RMT_CONN
0 — remote pull-up resistor disconnected
1 — remote pull-up resistor connected
Remark: When the local pull-up resistor on the DP line is disabled,
a 50 µs delay is applied before the RMT_CONN detection is
enabled.
4
B_SESS_VLD For the B-device (ID_REG = 1), this bit is a B-device session valid
indicator (B_SESS_VLD).
0 — VBUS is lower than VB_SESS_VLD
1 — VBUS is higher than VB_SESS_VLD
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Table 25. OtgStatus register: bit description …continued
Bit
Symbol
Description
3
A_SESS_VLD For the A-device (ID_REG = 0), this bit is an A-device session valid
indicator (A_SESS_VLD).
0 — VBUS is lower than VA_SESS_VLD
1 — VBUS is higher than VA_SESS_VLD
2
1
0
B_SESS_END For the B-device (ID_REG = 1), this bit is a B-device session end
indicator (B_SESS_END).
0 — VBUS is higher than VB_SESS_END
1 — VBUS is lower than VB_SESS_END
A_VBUS_VLD For the A-device (ID_REG = 0), this bit is an A-device VBUS valid
indicator (A_VBUS_VLD).
0 — VBUS is lower than VA_VBUS_VLD
1 — VBUS is higher than VA_VBUS_VLD
ID_REG
This bit reflects the logic level of the ID pin.
0 — ID pin is LOW (mini-A plug is inserted in the device’s mini-AB
receptacle)
1 — ID pin is HIGH (no plug or mini-B plug is inserted in the
device’s mini-AB receptacle)
13.3 OtgInterrupt register (R/W: 68h/E8h)
Code (Hex): 68 — read
Code (Hex): E8 — write
Table 26. OtgInterrupt register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
reserved
OTG_TMR_
TIMEOUT
B_SE0_
SRP
A_SRP_
DET
Reset
Access
Bit
-
-
-
-
-
-
-
-
-
-
0
R/W
2
0
R/W
1
0
R/W
0
7
6
5
4
3
Symbol
OTG_
RESUME
OTG_
SUSPND
RMT_
CONN_C
B_SESS_
VLD_C
A_SESS_
VLD_C
B_SESS_
END_C
A_VBUS_ ID_REG_C
VLD_C
Reset
0
0
0
0
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
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Table 27. OtgInterrupt register: bit description
Bit
Symbol
Description
15 to 11
10
-
reserved
OTG_TMR_ This bit is set whenever the OTG timer attains time-out. Writing logic 1
TIMEOUT
clears this bit. Writing logic 0 has no effect.
0 — no event
1 — OTG timer time-out
9
8
B_SE0_SRP This bit is set whenever the device detects more than 2 ms of SE0.
Writing logic 1 clears this bit. Writing logic 0 has no effect.
0 — no event
1 — bus has been in SE0 for more than 2 ms
A_SRP_DET This bit is used to detect the Session Request Event (SRP) from the
remote device. The SRP event can be either VBUS pulsing or data line
pulsing. Bit 9 (A_SEL_SRP) of the OtgControl register determines
which SRP is selected. Writing logic 1 clears this bit. Writing logic 0
has no effect.
0 — no event
1 — SRP is detected
7
6
OTG_
RESUME
This bit is used to detect a J to K state change when the device is in
the ‘suspend’ state. Writing logic 1 clears this bit. Writing logic 0 has
no effect.
0 — no event
1 — a resume signal (J → K) is detected when the bus is in the
‘suspend’ state
OTG_
SUSPND
This bit is set whenever the OTG port goes into the suspend state (bus
idle for > 3 ms). Write logic 1 to clear this bit. Writing logic 0 has no
effect.
0 — no event
1 — suspend (bus idle for > 3 ms)
5
4
3
RMT_
CONN_C
This bit is set whenever the RMT_CONN bit of the OtgStatus register
changes. Write logic 1 to clear this bit. Writing logic 0 has no effect.
0 — no event
1 — RMT_CONN bit has changed
B_SESS_
VLD_C
This bit is set whenever the B_SESS_VLD bit of the OtgStatus register
changes. Write logic 1 to clear this bit. Writing logic 0 has no effect.
0 — no event
1 — bit B_SESS_VLD has changed
A_SESS_
VLD_C
This bit is set whenever the A_SESS_VLD bit of the OtgStatus register
changes. Write logic 1 to clear this bit. Writing logic 0 has no effect.
0 — no event
1 — bit A_SESS_VLD has changed
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Single-chip USB OTG Controller
Table 27. OtgInterrupt register: bit description …continued
Bit
Symbol
Description
2
B_SESS_
END_C
This bit is set whenever the B_SESS_END bit of the OtgStatus
register changes. Write logic 1 to clear this bit. Writing logic 0 has no
effect.
0 — no event
1 — bit B_SESS_END has changed
1
0
A_VBUS_
VLD_C
This bit is set whenever the A_VBUS_VLD bit of the OtgStatus register
changes. Write logic 1 to clear this bit. Writing logic 0 has no effect.
0 — no event
1 — bit A_VBUS_VLD has changed
ID_REG_C
This bit is set whenever the ID_REG bit of the OtgStatus register
changes. This is an indication that the mini-A plug is inserted or
removed (that is, the ID pin is shorted to ground or pulled HIGH). Write
logic 1 to clear this bit. Writing logic 0 has no effect.
0 — no event
1 — ID_REG bit has changed
13.4 OtgInterruptEnable register (R/W: 69h/E9h)
Code (Hex): 69 — read
Code (Hex): E9 — write
Table 28. OtgInterruptEnable register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
reserved
OTG_
TMR_IE
B_SE0_
SRP_IE
A_SRP_
DET_IE
Reset
Access
Bit
-
-
-
-
-
-
-
-
0
R/W
2
0
R/W
1
0
R/W
0
-
7
-
6
5
4
3
Symbol
OTG_
OTG_
RMT_
CONN_IE
B_SESS_
VLD_IE
A_SESS_
VLD_IE
B_SESS_
END_IE
A_VBUS_
VLD_IE
ID_REG_
IE
RESUME_ SUSPND_
IE
IE
Reset
0
0
0
0
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 29. OtgInterruptEnable register: bit description
Bit
Symbol
Description
15 to 11 -
reserved
10
9
OTG_TMR_IE
Logic 1 enables interrupt when the OTG timer attains time-out.
Logic 0 disables interrupt.
B_SE0_SRP_IE
A_SRP_DET_IE
Logic 1 enables interrupt on detecting the B_SE0_SRP status
change. Logic 0 disables interrupt.
8
Logic 1 enables interrupt on detecting the SRP event. Logic 0
disables interrupt.
7
OTG_RESUME_IE Logic 1 enables interrupt on detecting bus resume (J to K only)
event. Logic 0 disables interrupt.
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Single-chip USB OTG Controller
Table 29. OtgInterruptEnable register: bit description …continued
Bit
Symbol
Description
6
OTG_SUSPND_IE Logic 1 enables interrupt on detecting the bus ‘suspend’ status
change. Logic 0 disables interrupt.
5
4
3
2
1
0
RMT_CONN_IE
B_SESS_VLD_IE
A_SESS_VLD_IE
Logic 1 enables interrupt on detecting the RMT_CONN status
change. Logic 0 disables interrupt.
Logic 1 enables interrupt on detecting B_SESS_VLD status
change. Logic 0 disables interrupt.
Logic 1 enables interrupt on detecting A_SESS_VLD status
change. Logic 0 disables interrupt.
B_SESS_END_IE Logic 1 enables interrupt on detecting B_SESS_END status
change. Logic 0 disables interrupt.
A_VBUS_VLD_IE
Logic 1 enables interrupt on detecting A_VBUS_VLD status
change. Logic 0 disables interrupt.
ID_REG_IE
Logic 1 enables interrupt on detecting the ID_REG status change.
Logic 0 disables interrupt.
13.5 OtgTimer register (R/W: 6Ah/EAh)
Code (Hex): 6A — read
Code (Hex): EA — write
Table 30. OtgTimer register: bit allocation
Bit
31
30
29
28
27
26
25
24
Symbol
START_
TMR
reserved
Reset
Access
Bit
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
R/W
23
22
21
20
19
18
17
16
Symbol
Reset
Access
Bit
TMR_INIT_VALUE[23:16]
0
0
0
0
0
0
0
R/W
9
0
R/W
8
R/W
15
R/W
14
R/W
13
R/W
12
R/W
11
R/W
10
Symbol
Reset
Access
Bit
TMR_INIT_VALUE[15:8]
0
R/W
7
0
R/W
6
0
R/W
5
0
R/W
4
0
R/W
3
0
R/W
2
0
R/W
1
0
R/W
0
Symbol
Reset
Access
TMR_INIT_VALUE[7:0]
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
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Single-chip USB OTG Controller
Table 31. OtgTimer register: bit description
Bit
Symbol
Description
31
START_TMR This is the start or stop bit of the OTG timer. Writing logic 1 will cause
the OTG timer to load TMR_INIT_VALUE into the counter and start to
count. Writing logic 0 will stop the timer. This bit is automatically
cleared when the OTG timer is timed out.
0 — stop the timer
1 — start the timer
30 to 24
23 to 0
-
reserved
TMR_INIT_
These bits define the initial value used by the OTG timer. The timer
VALUE[23:0] interval is 0.01 ms. Maximum timer allowed is 167.772 s.
13.6 OtgAltTimer register (R/W: 6Ch/ECh)
Code (Hex): 6C — read
Code (Hex): EC — write
Table 32. OtgAltTimer register: bit allocation
Bit
31
30
29
28
27
26
25
24
Symbol
START_
TMR
reserved
Reset
Access
Bit
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
R/W
23
22
21
20
19
18
17
16
Symbol
Reset
Access
Bit
CURRENT_TIME[23:16]
0
R
0
R
0
R
0
R
0
R
0
R
0
R
9
0
R
8
15
14
13
12
11
10
Symbol
Reset
Access
Bit
CURRENT_TIME[15:8]
0
R
7
0
R
6
0
R
5
0
R
4
0
R
3
0
R
2
0
R
1
0
R
0
Symbol
Reset
Access
CURRENT_TIME[7:0]
0
0
0
0
0
0
0
0
R
R
R
R
R
R
R
R
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Single-chip USB OTG Controller
Table 33. OtgAltTimer register: bit description
Bit
Symbol
Description
31
START_
TMR
This is the start or stop bit of the OTG timer 2. Writing logic 1 will
cause OTG timer 2 to start counting from 0. When the counter reaches
FF FFFFh, this bit is auto-cleared (the counter is stopped). Writing
logic 0 will stop the counting.
If any bit of the OTGInterrupt register is set and the corresponding bit
of the OtgInterruptEnable register is also set, this bit will be
auto-cleared and the current value of the counter will be written to the
CURRENT_TIME field.
0 — stop the timer
1 — start the timer
reserved
30 to 24
23 to 0
-
CURRENT_ When read, these bits give the current value of the timer. The actual
TIME time is CURRENT_TIME × 0.01 ms.
14. Host Controller registers
The Host Controller contains a set of on-chip control registers. These registers can be
read or written by the Host Controller Driver (HCD). The operational registers are made
compatible to Open Host Controller Interface (OHCI) operational registers. This enables
the OHCI HCD to be easily ported to the ISP1362.
Reserved bits may be defined in future releases of this specification. To ensure
interoperability, the HCD that does not use a reserved field must not assume that the
reserved field contains logic 0. Furthermore, the HCD must always preserve the values of
the reserved field. When a R/W register is modified, the HCD must first read the register,
modify the desired bits and then write the register with the reserved bits still containing the
read value. Alternatively, the HCD can maintain an in-memory copy of previously written
values that can be modified and then written to the Host Controller register. When there is
a write to set or clear the register, bits written to reserved fields must be logic 0.
As shown in Table 34, the offset locations (commands to read registers) of these
operational registers (32-bit registers) are similar to those defined in the OHCI
specification. The addresses, however, are equal to offset divided by 4.
Table 34. Host Controller registers overview
Command (Hex)
Register
Width Reference
Functionality
Read
00
Write
N/A
81
HcRevision
32
32
32
32
32
32
32
32
32
32
Section 14.1.1 on page 70 HC control and status
registers
01
HcControl
Section 14.1.2 on page 70
02
82
HcCommandStatus
HcInterruptStatus
HcInterruptEnable
HcInterruptDisable
HcFmInterval
Section 14.1.3 on page 72
03
83
Section 14.1.4 on page 73
04
84
Section 14.1.5 on page 74
05
85
Section 14.1.6 on page 75
0D
0E
8D
8E
8F
Section 14.2.1 on page 76 HC frame counter
registers
HcFmRemaining
HcFmNumber
Section 14.2.2 on page 77
0F
Section 14.2.3 on page 78
Section 14.2.4 on page 79
© NXP B.V. 2007. All rights reserved.
11
91
HcLSThreshold
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Single-chip USB OTG Controller
Table 34. Host Controller registers overview …continued
Command (Hex)
Register
Width Reference
Functionality
Read
12
13
14
15
16
20
21
22
24
25
27
28
N/A
2C
32
45
30
40
42
47
33
43
53
17
18
19
1A
34
44
54
1B
1C
1D
1E
51
52
Write
92
HcRhDescriptorA
HcRhDescriptorB
HcRhStatus
32
32
32
32
32
16
16
16
16
16
16
16
16
16
32
16
16
16
16
16
16
16
16
32
32
32
16
16
16
16
32
32
32
16
16
Section 14.3.1 on page 80 HC root hub registers
Section 14.3.2 on page 82
93
94
Section 14.3.3 on page 83
95
HcRhPortStatus[1]
HcRhPortStatus[2]
HcHardwareConfiguration
HcDMAConfiguration
HcTransferCounter
HcµPInterrupt
Section 14.3.4 on page 84
96
Section 14.3.4 on page 84
A0
A1
A2
A4
A5
N/A
A8
A9
AC
B2
C5
B0
C0
C2
C7
B3
C3
D3
N/A
98
Section 14.4.1 on page 88 HC DMA and interrupt
control registers
Section 14.4.2 on page 90
Section 14.4.3 on page 91
Section 14.4.4 on page 91
HcµPInterruptEnable
HcChipID
Section 14.4.5 on page 93
Section 14.5.1 on page 94 HC miscellaneous
registers
HcScratch
Section 14.5.2 on page 94
HcSoftwareReset
HcBufferStatus
Section 14.5.3 on page 95
Section 14.6.1 on page 95 HC buffer RAM control
registers
HcDirectAddressLength
HcDirectAddressData
HcISTLBufferSize
HcISTL0BufferPort
HcISTL1BufferPort
HcISTLToggleRate
HcINTLBufferSize
HcINTLBufferPort
HcINTLBlkSize
Section 14.6.2 on page 96
Section 14.6.3 on page 97
Section 14.7.1 on page 97 ISO transfer registers
Section 14.7.2 on page 97
Section 14.7.3 on page 98
Section 14.7.4 on page 98
Section 14.8.1 on page 99 Interrupt transfer
registers
Section 14.8.2 on page 99
Section 14.8.3 on page 100
HcINTLPTDDoneMap
HcINTLPTDSkipMap
HcINTLLastPTD
Section 14.8.4 on page 100
Section 14.8.5 on page 100
99
Section 14.8.6 on page 101
N/A
B4
C4
D4
N/A
9C
9D
N/A
D1
D2
HcINTLCurrentActivePTD
HcATLBufferSize
Section 14.8.7 on page 101
Section 14.9.1 on page 102 Aperiodic transfer
registers
HcATLBufferPort
Section 14.9.2 on page 102
HcATLBlkSize
Section 14.9.3 on page 102
Section 14.9.4 on page 103
Section 14.9.5 on page 103
Section 14.9.6 on page 104
Section 14.9.7 on page 104
Section 14.9.8 on page 105
Section 14.9.9 on page 105
HcATLPTDDoneMap
HcATLPTDSkipMap
HcATLLastPTD
HcATLCurrentActivePTD
HcATLPTDDoneThresholdCount
HcATLPTDDoneThresholdTimeOut 16
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Single-chip USB OTG Controller
14.1 HC control and status registers
14.1.1 HcRevision register (R: 00h)
The bit allocation of the HcRevision register is given in Table 35.
Code (Hex): 00 — read only
Table 35. HcRevision register: bit allocation
Bit
31
30
29
28
27
26
25
24
Symbol
Reset
Access
Bit
reserved
reserved
reserved
REV[7:0]
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
Symbol
Reset
Access
Bit
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
7
6
5
4
3
2
1
0
Symbol
Reset
Access
0
0
0
1
0
0
0
1
R
R
R
R
R
R
R
R
Table 36. HcRevision register: bit description
Bit
Symbol
Description
31 to 8
7 to 0
-
Reserved
REV[7:0] Revision: This read-only field contains the Binary-Coded Decimal (BCD)
representation of the version of the HCI specification that is implemented by
this Host Controller.
14.1.2 HcControl register (R/W: 01h/81h)
The HcControl register defines operating modes for the Host Controller. The RWE bit is
modified only by the HCD. Table 37 shows the bit allocation of the register.
Code (Hex): 01 — read
Code (Hex): 81 — write
Table 37. HcControl register: bit allocation
Bit
31
30
29
28
27
26
25
24
Symbol
Reset
Access
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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Bit
23
22
21
20
19
18
17
16
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
9
-
15
14
13
12
11
10
RWE
0
8
Symbol
Reset
Access
Bit
reserved
RWC
0
reserved
-
-
-
-
-
-
-
-
-
-
-
-
R/W
2
R/W
1
7
6
5
4
3
0
Symbol
Reset
Access
HCFS[1:0]
reserved
0
0
-
-
-
-
-
-
-
-
-
-
-
-
R/W
R/W
Table 38. HcControl register: bit description
Bit
Symbol
-
Description
31 to 11
10
reserved
RWE
RemoteWakeupEnable: This bit is used by the HCD to enable or
disable the remote wake-up feature on detecting upstream resume
signaling. When this bit and the ResumeDetected (RD) bit in
HcInterruptStatus are set, a remote wake-up is signaled to the host
system. Setting this bit has no impact on the generation of hardware
interrupt.
9
RWC
RemoteWakeupConnected: This bit indicates whether the Host
Controller supports remote wake-up signaling. If remote wake-up is
supported and used by the system, it is the responsibility of the
system firmware to set this bit during POST. The Host Controller
clears the bit on a hardware reset but does not alter it on a software
reset. Remote wake-up signaling of the host system is
host-bus-specific and is not described in this specification.
8
-
reserved
7 to 6
HCFS[1:0]
HostControllerFunctionalState for USB
00 — USBReset
01 — USBResume
10 — USBOperational
11 — USBSuspend
A transition to USBOperational from another state causes
Start-Of-Frame (SOF) generation to begin 1 ms later. The HCD may
determine whether the Host Controller has begun sending SOFs by
reading the StartofFrame (SF) field of HcInterruptStatus.
This field may be changed by the Host Controller only when it is in the
USBSuspend state. The Host Controller may move from the
USBSuspend state to the USBResume state after detecting the
resume signaling from a downstream port.
The Host Controller enters USBReset either by a software reset or by
a hardware reset. The latter also resets the root hub and asserts
subsequent reset signaling to downstream ports.
5 to 0
-
reserved
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14.1.3 HcCommandStatus register (R/W: 02h/82h)
The HcCommandStatus register is a 4 bytes register, and the bit allocation is given in
Table 39. This register is used by the Host Controller to receive commands issued by the
HCD, and it also reflects the current status of the Host Controller. To the HCD, it appears
to be a ‘write to set’ register. The Host Controller must ensure that bits written as logic 1
become set in the register while bits written as logic 0 remain unchanged in the register.
The HCD may issue multiple distinct commands to the Host Controller without concern for
corrupting previously issued commands. The HCD has normal read access to all bits.
The SchedulingOverrunCount (SOC) field indicates the number of frames with which the
Host Controller has detected the scheduling overrun error. This occurs when the periodic
list does not complete before the End-Of-Frame (EOF). When a scheduling overrun error
is detected, the Host Controller increments the counter and sets the SchedulingOverrun
(SO) field of the HcInterruptStatus register.
Code (Hex): 02 — read
Code (Hex): 82 — write
Table 39. HcCommandStatus register: bit allocation
Bit
31
30
29
28
27
26
25
24
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
Symbol
Reset
Access
Bit
reserved
SOC[1:0]
-
-
-
-
-
-
-
-
-
-
-
-
0
R
9
0
R
8
15
14
13
12
11
10
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
7
6
5
4
3
2
1
0
Symbol
Reset
Access
reserved
HCR
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
R/W
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Table 40. HcCommandStatus register: bit description
Bit
Symbol
-
Description
31 to 18
17 to 16
reserved
SOC[1:0]
SchedulingOverrunCount: This field is incremented on each
scheduling overrun error. It is initialized to 00b and wraps around at
11b. It will be incremented when a scheduling overrun is detected
even if SchedulingOverrun in HcInterruptStatus has already been set.
This is used by the HCD to monitor any persistent scheduling
problems.
15 to 1
0
-
reserved
HCR
HostControllerReset: This bit is set by the HCD to initiate a software
reset to the Host Controller. Regardless of the functional state of the
Host Controller, it moves to the USBSuspend state in which most of
operational registers are reset, except those stated otherwise. This bit
is cleared by the Host Controller on completing the reset operation.
The reset operation must be completed within 10 ms. This bit, when
set, will not cause a reset to the root hub and no subsequent reset
signaling will be asserted to its downstream ports.
14.1.4 HcInterruptStatus register (R/W: 03h/83h)
This register (bit allocation: Table 41) provides the status of the events that cause
hardware interrupts. When an event occurs, the Host Controller sets the corresponding bit
in this register. When a bit is set, a hardware interrupt is generated if the corresponding
interrupt is enabled in the HcInterruptEnable register (see Section 14.1.5) and the
MasterInterruptEnable (MIE) bit is set. The HCD must write logic 1 to the specific bits to
clear the corresponding interrupt bits. The HCD cannot set any of these bits.
Code (Hex): 03 — read
Code (Hex): 83 — write
Table 41. HcInterruptStatus register: bit allocation
Bit
31
30
29
28
27
26
25
24
Symbol
Reset
Access
Bit
reserved
reserved
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
Symbol
Reset
Access
Bit
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
6
-
7
5
4
3
2
1
0
Symbol
Reset
Access
reserved
RHSC
0
FNO
0
UE
0
RD
0
SF
0
reserved
SO
0
-
-
-
-
R/W
R/W
R/W
R/W
R/W
R/W
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Table 42. HcInterruptStatus register: bit description
Bit
Symbol Description
31 to 7
6
-
reserved
RHSC
RootHubStatusChange: This bit is set when any of the bits of
HcRhPortStatus[NumberofDownstreamPort] has changed.
5
4
FNO
UE
FrameNumberOverflow: This bit is set when the MSB of the HcFmNumber
register (bit 15) changes from logic 0 to logic 1 or from logic 1 to logic 0.
UnrecoverableError: This bit is set when the Host Controller detects a
system error not related to the USB. The Host Controller should not proceed
with any processing nor signaling before the system error is corrected. The
HCD clears this bit after the Host Controller is reset.
NXP Host Controller interface: always set to logic 0.
3
2
RD
SF
ResumeDetected: This bit is set when the Host Controller detects that a
device on the USB is asserting resume signaling. It is the transition from no
resume signaling to resume signaling, causing this bit to be set. This bit is not
set when the HCD sets the USBResume state.
StartOfFrame: At the start of each frame, this bit is set by the Host Controller
and an SOF is generated.
1
0
-
reserved
SO
SchedulingOverrun: This bit is set when the schedule is overrun for the
current frame. A scheduling overrun also causes SchedulingOverrunCount
(SOC) of HcCommandStatus to be incremented.
14.1.5 HcInterruptEnable register (R/W: 04h/84h)
Each enable bit in the HcInterruptEnable register corresponds to an associated interrupt
bit in the HcInterruptStatus register. The HcInterruptEnable register is used to control
which events generate a hardware interrupt. When the following three conditions occur:
• A bit is set in the HcInterruptStatus register.
• The corresponding bit in the HcInterruptEnable register is set.
• The MasterInterruptEnable (MIE) bit is set.
Then, a hardware interrupt is requested on the host bus.
Writing logic 1 to a bit in the HcInterruptEnable register sets the corresponding bit,
whereas writing logic 0 to a bit in this register leaves the corresponding bit unchanged. On
a read, the current value of this register is returned. Table 43 contains the bit allocation of
the register.
Code (Hex): 04 — read
Code (Hex): 84 — write
Table 43. HcInterruptEnable register: bit allocation
Bit
31
MIE
0
30
29
28
27
26
25
24
Symbol
Reset
Access
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
R/W
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Bit
23
22
21
20
19
18
17
16
Symbol
Reset
Access
Bit
reserved
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
6
-
7
5
4
3
2
1
0
Symbol
Reset
Access
reserved
RHSC
0
FNO
0
UE
0
RD
0
SF
0
reserved
SO
0
-
-
-
-
R/W
R/W
R/W
R/W
R/W
R/W
Table 44. HcInterruptEnable register: bit description
Bit
Symbol
Description
31
MIE
MasterInterruptEnable by the HCD: Logic 0 is ignored by the Host
Controller. Logic 1 enables interrupt generation by events specified in
other bits of this register.
30 to 7
6
-
reserved
RHSC
0 — ignore
1 — enable interrupt generation because of root hub status change
5
4
3
2
FNO
UE
0 — ignore
1 — enable interrupt generation because of frame number overflow
0 — ignore
1 — enable interrupt generation because of unrecoverable error
RD
SF
0 — ignore
1 — enable interrupt generation because of resume detect
0 — ignore
1 — enable interrupt generation because of start-of-frame
1
0
-
reserved
SO
0 — ignore
1 — enable interrupt generation because of scheduling overrun
14.1.6 HcInterruptDisable register (R/W: 05h/85h)
Each disable bit in the HcInterruptDisable register corresponds to an associated interrupt
bit in the HcInterruptStatus register. The HcInterruptDisable register is coupled with the
HcInterruptEnable register. Therefore, writing logic 1 to a bit in this register clears the
corresponding bit in the HcInterruptEnable register, whereas writing logic 0 to a bit in this
register leaves the corresponding bit in the HcInterruptEnable register unchanged. On a
read, the current value of the HcInterruptEnable register is returned. Table 45 provides the
bit allocation of the HcInterruptDisable register.
Code (Hex): 05 — read
Code (Hex): 85 — write
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Table 45. HcInterruptDisable register: bit allocation
Bit
31
MIE
0
30
29
28
27
26
25
24
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
R/W
23
22
21
20
19
18
17
16
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
6
-
7
5
4
3
2
1
0
Symbol
Reset
Access
reserved
RHSC
0
FNO
0
UE
0
RD
0
SF
0
reserved
SO
0
-
-
-
-
R/W
R/W
R/W
R/W
R/W
R/W
Table 46. HcInterruptDisable register: bit description
Bit
Symbol
Description
31
MIE
Logic 0 is ignored by the Host Controller. Logic 1 disables interrupt
generation. This field is set after a hardware or software reset.
30 to 7
6
-
reserved
RHSC
0 — ignore
1 — disable interrupt generation because of root hub status change
5
4
3
2
FNO
UE
0 — ignore
1 — disable interrupt generation because of frame number overflow
0 — ignore
1 — disable interrupt generation because of unrecoverable error
RD
SF
0 — ignore
1 — disable interrupt generation because of resume detect
0 — ignore
1 — disable interrupt generation because of start-of-frame
1
0
-
reserved
SO
0 — ignore
1 — disable interrupt generation because of scheduling overrun
14.2 HC frame counter registers
14.2.1 HcFmInterval register (R/W: 0Dh/8Dh)
The HcFmInterval register (bit allocation: Table 47) contains a 14-bit value that indicates
the bit time interval in a frame between two consecutive SOFs. In addition, it contains a
15-bit value, indicating the full-speed maximum packet size that the Host Controller may
transmit or receive without causing a scheduling overrun. The HCD may carry out minor
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adjustments on FrameInterval by writing a new value over the present one at each SOF.
This provides the programmability necessary for the Host Controller to synchronize with
an external clocking resource and to adjust any unknown local clock offset.
Code (Hex): 0D — read
Code (Hex): 8D — write
Table 47. HcFmInterval register: bit allocation
Bit
31
FIT
0
30
29
28
27
26
25
24
Symbol
Reset
Access
Bit
FSMPS[14:8]
0
0
0
0
0
0
0
R/W
23
R/W
22
R/W
21
R/W
20
R/W
19
R/W
18
R/W
17
R/W
16
Symbol
Reset
Access
Bit
FSMPS[7:0]
0
0
0
0
0
0
0
R/W
9
0
R/W
8
R/W
15
R/W
14
R/W
13
R/W
12
R/W
11
R/W
10
Symbol
Reset
Access
Bit
reserved
FI[13:8]
-
-
-
-
1
R/W
5
0
R/W
4
1
R/W
3
1
R/W
2
1
R/W
1
0
R/W
0
7
6
Symbol
Reset
Access
FI[7:0]
1
1
0
1
1
1
1
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 48. HcFmInterval register: bit description
Bit
Symbol
Description
31
FIT
FrameIntervalToggle: The HCD toggles this bit whenever it loads a
new value to FrameInterval.
30 to 16
FSMPS
[14:0]
FSLargestDataPacket: Specifies a value that is loaded into the
largest data packet counter at the beginning of each frame. The
counter value represents the largest amount of data in bits that can be
sent or received by the Host Controller in a single transaction at any
given time, without causing a scheduling overrun. The field value is
calculated by the HCD.
15 to 14
13 to 0
-
reserved
FI[13:0]
FrameInterval: Specifies the interval between two consecutive SOFs
in bit times. The nominal value is set to 11999. The HCD must store
the current value of this field before resetting the Host Controller.
Setting the HostControllerReset (HCR) field of the HcCommandStatus
register causes the Host Controller to reset this field to its nominal
value. The HCD may choose to restore the stored value on completing
the reset sequence.
14.2.2 HcFmRemaining register (R/W: 0Eh/8Eh)
The HcFmRemaining register is a 14-bit down counter, showing the bit time remaining in
the current frame. The bit allocation is given in Table 49.
Code (Hex): 0E — read
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Code (Hex): 8E — write
Table 49. HcFmRemaining register: bit allocation
Bit
31
FRT
0
30
29
28
27
26
25
24
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
R/W
23
22
21
20
19
18
17
16
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
reserved
FR[13:8]
-
-
-
-
0
R/W
5
0
R/W
4
0
R/W
3
0
R/W
2
0
R/W
1
0
R/W
0
7
6
Symbol
Reset
Access
FR[7:0]
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 50. HcFmRemaining register: bit description
Bit
Symbol Description
FRT
31
FrameRemainingToggle: This bit is loaded from the FrameIntervalToggle
(FIT) field of HcFmInterval whenever FrameRemaining (FR) reaches 0. This
bit is used by the HCD for synchronization between FrameInterval (FI) and
FrameRemaining (FR).
30 to 14 -
reserved
13 to 0 FR[13:0] FrameRemaining: This counter is decremented at each bit time. When it
reaches zero, it is reset by loading the FrameInterval (FI) value specified in
HcFmInterval at the next bit time boundary. When entering the
USBOperational state, the Host Controller reloads it with the content of the
FrameInterval (FI) part of the HcFmInterval register and uses the updated
value from the next SOF.
14.2.3 HcFmNumber register (R/W: 0Fh/8Fh)
The HcFmNumber register is a 16-bit counter, and the bit allocation is given in Table 51. It
provides a timing reference for events happening in the Host Controller and the HCD. The
HCD may use the 16-bit value specified in this register and generate a 32-bit frame
number, without requiring frequent access to the register.
Code (Hex): 0F — read
Code (Hex): 8F — write
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Table 51. HcFmNumber register: bit allocation
Bit
31
30
29
28
27
26
25
24
Symbol
Reset
Access
Bit
reserved
reserved
FN[15:8]
FN[7:0]
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
Symbol
Reset
Access
Bit
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
0
R
7
0
R
6
0
R
5
0
R
4
0
R
3
0
R
2
0
R
1
0
R
0
Symbol
Reset
Access
0
0
0
0
0
0
0
0
R
R
R
R
R
R
R
R
Table 52. HcFmNumber register: bit description
Bit
Symbol Description
reserved
31 to 16
-
15 to 0 FN[15:0] FrameNumber: This is incremented when HcFmRemaining is reloaded. The
value will be rolled over to 0h after FFFFh. When the USBOperational state is
entered, this is automatically incremented.
14.2.4 HcLSThreshold register (R/W: 11h/91h)
The HcLSThreshold register contains an 11-bit value. This value is used by the Host
Controller to determine whether to start a transfer of a maximum of 8 bytes LS packet
before the EOF. The HCD is not allowed to change this value. Table 53 shows the bit
allocation of the register.
Code (Hex): 11 — read
Code (Hex): 91 — write
Table 53. HcLSThreshold register: bit allocation
Bit
31
30
29
28
27
26
25
24
Symbol
Reset
Access
Bit
reserved
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
Symbol
Reset
Access
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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Bit
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
reserved
LST[10:8]
-
-
-
-
-
-
-
-
-
-
1
R/W
2
1
R/W
1
0
R/W
0
7
6
5
4
3
Symbol
Reset
Access
LST[7:0]
0
0
1
0
1
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 54. HcLSThreshold register: bit description
Bit
Symbol
Description
31 to 11
10 to 0
-
reserved
LST[10:0] LSThreshold: Contains a value that is compared to the FrameRemaining
(FR) field before a low-speed transaction is initiated. The transaction is
started only if FrameRemaining (FR) ≥ this field. The value is calculated by
the HCD. The HCD must consider transmission and set-up overhead, while
calculating this value.
14.3 HC root hub registers
All registers included in this partition are dedicated to the USB root hub, which is an
integral part of the Host Controller although it is functionally a separate entity. The HCD
emulates USB Driver (USBD) accesses to the root hub by using a register interface. The
HCD maintains many USB-defined hub features that are not required to be supported in
hardware. For example, the hub’s device, configuration, interface and endpoint descriptors
are maintained only in the HCD, as well as some static fields of the class descriptor. The
HCD also maintains and decodes the address of the root hub device and other trivial
operations that are better suited to software than to hardware.
Root hub registers are developed to maintain the similarity of bit organization and
operation to typical hubs found in the system.
Four registers are defined as follows:
• HcRhDescriptorA
• HcRhDescriptorB
• HcRhStatus
• HcRhPortStatus[1:NDP]
Each register is read and written as a double word. These registers are only written during
initialization to correspond with the system implementation. The HcRhDescriptorA and
HcRhDescriptorB registers can be read or written, regardless of the USB states of the
Host Controller. You can write to HcRhStatus and HcRhPortStatus only when the Host
Controller is in the USBOperational state.
14.3.1 HcRhDescriptorA register (R/W: 12h/92h)
The HcRhDescriptorA register is the first of two registers describing the characteristics of
the root hub. The bit allocation is given in Table 55.
Code (Hex): 12 — read
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Code (Hex): 92 — write
Table 55. HcRhDescriptorA register: bit description
Bit
31
30
29
28
27
26
25
24
Symbol
Reset
Access
Bit
POTPGT[7:0]
1
1
1
1
1
1
1
1
R/W
23
R/W
22
R/W
21
R/W
20
R/W
19
R/W
18
R/W
17
R/W
16
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
12
-
8
15
14
13
11
10
DT
0
9
Symbol
Reset
Access
Bit
reserved
NOCP
0
OCPM
NPS
0
PSM
1
-
-
-
-
-
-
1
R/W
3
R/W
4
R
2
R/W
1
R/W
0
7
6
5
Symbol
Reset
Access
reserved
NDP[1:0]
-
-
-
-
-
-
-
-
-
-
-
-
1
0
R
R
Table 56. HcRhDescriptorA register: bit description
Bit Symbol Description
31 to 24 POTPGT PowerOnToPowerGoodTime: This byte specifies the duration HCD must
[7:0]
wait before accessing a powered-on port of the root hub. It is implementation
specific. The unit of time is 2 ms. The duration is calculated as POTPGT ×
2 ms.
23 to 13
12
-
reserved
NOCP
NoOverCurrentProtection: This bit describes how the overcurrent status for
root hub ports are reported. When this bit is cleared, the
OverCurrentProtectionMode (OCPM) field specifies global or per-port
reporting.
0 — overcurrent status is collectively reported for all downstream ports.
1 — no overcurrent reporting supported.
11
OCPM
OverCurrentProtectionMode: This bit describes how the overcurrent status
for root hub ports are reported. At reset, this field should reflect the same
mode as PowerSwitchingMode. This field is valid only if the
NoOverCurrentProtection (NOCP) field is cleared.
0 — overcurrent status is collectively reported for all downstream ports.
1 — overcurrent status is reported on a per-port basis. On power up, clear
this bit and then set it to logic 1.
10
9
DT
DeviceType: This bit specifies that the root hub is not a compound device; it
is not permitted. This field should always read as 0.
NPS
NoPowerSwitching: This bit is used to specify whether power switching is
supported or ports are always powered. It is implementation specific. When
this bit is cleared, the PowerSwitchingMode (PSM) bit specifies global or
per-port switching.
0 — Ports are power switched.
1 — Ports are always powered on when the Host Controller is powered on.
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Table 56. HcRhDescriptorA register: bit description …continued
Bit
Symbol Description
8
PSM
PowerSwitchingMode: This bit is used to specify how the power switching
of Root Hub ports is controlled. It is implementation specific. This field is
valid only if the NoPowerSwitching (NPS) field is cleared.
0 — All ports are powered at the same time.
1 — Each port is individually powered. This mode allows port power to be
controlled by either the global switch or per-port switching. If the
PortPowerControlMask (PPCM) bit is set, the port responds to only port
power commands (Set/ClearPortPower). If the port mask is cleared, then the
port is controlled only by the global power switch (Set/ClearGlobalPower).
7 to 2
1 to 0
-
reserved
NDP[1:0] NumberofDownstreamPort: These bits specify the number of downstream
ports supported by the root hub. The ISP1362 supports two ports and
therefore, the value is 2.
14.3.2 HcRhDescriptorB register (R/W: 13h/93h)
The HcRhDescriptorB register is the second of two registers describing the characteristics
of the root hub. These fields are written during initialization to correspond to the system
implementation. Table 57 shows the bit allocation of the register.
Code (Hex): 13 — read
Code (Hex): 93 — write
Table 57. HcRhDescriptorB register: bit allocation
Bit
31
30
29
28
27
26
25
24
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
23
22
21
20
19
18
17
16
Symbol
Reset
Access
Bit
reserved
PPCM[2:0]
-
-
-
-
-
-
-
-
-
-
IS
R/W
9
R/W
R/W
15
14
13
12
11
10
8
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
1
7
6
5
4
3
2
0
Symbol
Reset
Access
reserved
DR[2:0]
IS
-
-
-
-
-
-
-
-
-
-
R/W
R/W
R/W
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Table 58. HcRhDescriptorB register: bit description
Bit
Symbol
Description
31 to 19
-
reserved
18 to 16 PPCM[2:0] PortPowerControlMask: Each bit indicates whether a port is affected by a
global power control command when PowerSwitchingMode is set. When
set, the power state of the port is only affected by per-port power control
(Set/ClearPortPower). When cleared, the port is controlled by the global
power switch (Set/ClearGlobalPower). If the device is configured to global
switching mode (PowerSwitchingMode = 0), this field is not valid.
Bit 2 — ganged-power mask on port 2
Bit 1 — ganged-power mask on port 1
Bit 0 — reserved
15 to 3
2 to 0
-
reserved
DR[2:0]
DeviceRemovable: Each bit is dedicated to a port of the root hub. When
cleared, the attached device is removable. When set, the attached device
is not removable.
Bit 2 — device attached to port 2
Bit 1 — device attached to port 1
Bit 0 — reserved
14.3.3 HcRhStatus register (R/W: 14h/94h)
The HcRhStatus register is divided into two parts. The lower word of a double-word
represents the hub status field and the upper word represents the hub status change field.
Reserved bits should always be written as logic 0. See Table 59 for bit allocation of the
register.
Code (Hex): 14 — read
Code (Hex): 94 — write
Table 59. HcRhStatus register: bit allocation
Bit
31
CRWE
0
30
29
28
27
26
25
24
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
W
23
22
21
20
19
18
17
CCIC
0
16
Symbol
Reset
Access
Bit
reserved
LPSC
0
-
-
-
-
-
-
-
-
-
-
-
15
-
R/W
9
R/W
8
14
13
12
11
10
Symbol
Reset
Access
Bit
DRWE
0
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
R/W
7
6
5
4
3
2
1
0
Symbol
Reset
Access
reserved
OCI
0
LPS
0
-
-
-
-
-
-
-
-
-
-
-
-
R
R/W
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Single-chip USB OTG Controller
Table 60. HcRhStatus register: bit description
Bit
Symbol Description
31
CRWE On write ClearRemoteWakeupEnable: Writing logic 1 clears
DeviceRemoteWakeupEnable (DRWE). Writing logic 0 has no effect.
30 to 18
17
-
reserved
CCIC
OverCurrentIndicatorChange: This bit is set by hardware when a change
has occurred to the OverCurrentIndicator (OCI) field of this register. The HCD
clears this bit by writing logic 1. Writing logic 0 has no effect.
16
LPSC
On read LocalPowerStatusChange: The root hub does not support the local
power status feature. Therefore, this bit is always read as logic 0.
On write SetGlobalPower: In global power mode (PowerSwitchingMode = 0),
logic 1 is written to this bit to turn on power to all ports (clear
PortPowerStatus). In per-port power mode, it sets PortPowerStatus only on
ports whose PortPowerControlMask bit is not set. Writing logic 0 has no effect.
15
DRWE On read DeviceRemoteWakeupEnable: This bit enables
bit ConnectStatusChange as a resume event, causing a state transition from
USBSuspend to USBResume and setting the ResumeDetected interrupt.
0 — ConnectStatusChange is not a remote wake-up event
1 — ConnectStatusChange is a remote wake-up event
On write SetRemoteWakeupEnable: Writing logic 1 sets
DeviceRemoteWakeupEnable. Writing logic 0 has no effect.
14 to 2
1
-
reserved
OCI
OverCurrentIndicator: This bit reports overcurrent conditions when global
reporting is implemented. When set, an overcurrent condition exists. When
cleared, all power operations are normal. If per-port overcurrent protection is
implemented, this bit is always logic 0.
0
LPS
On read LocalPowerStatus: The root hub does not support the local power
status feature. Therefore, this bit is always read as logic 0.
On write ClearGlobalPower: In global power mode (PowerSwitchingMode =
0), logic 1 is written to this bit to turn-off power to all ports (clear
PortPowerStatus). In per-port power mode, it clears PortPowerStatus only on
ports whose PortPowerControlMask bit is not set. Writing logic 0 has no effect.
14.3.4 HcRhPortStatus[1:2] register (R/W [1]: 15h/95h; [2]: 16h/96h)
The HcRhPortStatus[1:2] register is used to control and report port events on a per-port
basis. NumberofDownstreamPort represents the number of HcRhPortStatus registers that
are implemented in hardware. The lower word is used to reflect the port status, whereas
the upper word reflects status change bits. Some status bits are implemented with special
write behavior. Reserved bits should always be written logic 0. The bit allocation of the
HcRhPortStatus[1:2] register is given in Table 61.
Code (Hex): [1] = 15, [2] = 16 — read
Code (Hex): [1] = 95, [2] = 96 — write
Table 61. HcRhPortStatus[1:2] register: bit allocation
Bit
31
30
29
28
27
26
25
24
Symbol
Reset
Access
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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Bit
23
22
21
20
PRSC
0
19
OCIC
0
18
PSSC
0
17
PESC
0
16
CSC
0
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
R/W
12
R/W
11
R/W
10
R/W
9
R/W
8
15
14
13
Symbol
Reset
Access
Bit
reserved
LSDA
0
PPS
0
-
-
-
-
-
-
-
-
-
-
-
-
3
R/W
1
R/W
0
7
6
5
4
2
Symbol
Reset
Access
reserved
PRS
0
POCI
0
PSS
0
PES
0
CCS
0
-
-
-
-
-
-
R/W
R/W
R/W
R/W
R/W
Table 62. HcRhPortStatus[1:2] register: bit description
Bit
Symbol
-
Description
31 to 21
20
reserved
PRSC
PortResetStatusChange: This bit is set at the end of the 10 ms port
reset signal. The HCD writes logic 1 to clear this bit. Writing logic 0
has no effect.
0 — port reset is not complete
1 — port reset is complete
19
18
OCIC
PSSC
PortOverCurrentIndicatorChange: This bit is valid only if overcurrent
conditions are reported on a per-port basis. This bit is set when the
root hub changes the PortOverCurrentIndicator (POCI) bit. The HCD
writes logic 1 to clear this bit. Writing logic 0 has no effect.
0 — no change in PortOverCurrentIndicator (POCI)
1 — PortOverCurrentIndicator (POCI) has changed
PortSuspendStatusChange: This bit is set when the full resume
sequence is complete. This sequence includes the 20 ms resume
pulse, LS EOP and 3 ms re-synchronization delay. The HCD writes
logic 1 to clear this bit. Writing logic 0 has no effect. This bit is also
cleared when PortResetStatusChange is set.
0 — resume is not completed
1 — resume is completed
17
PESC
PortEnableStatusChange: This bit is set when hardware events
cause the PortEnableStatus (PES) bit to be cleared. Changes from the
HCD writes do not set this bit. The HCD writes logic 1 to clear this bit.
Writing logic 0 has no effect.
0 — no change in PortEnableStatus (PES)
1 — change in PortEnableStatus (PES)
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Table 62. HcRhPortStatus[1:2] register: bit description …continued
Bit
Symbol
Description
16
CSC
ConnectStatusChange: This bit is set whenever a connect or
disconnect event occurs. The HCD writes logic 1 to clear this bit.
Writing logic 0 has no effect. If CurrentConnectStatus (CCS) is cleared
when a SetPortReset, SetPortEnable or SetPortSuspend write occurs,
this bit is set to force the driver to re-evaluate the connection status
because these writes should not occur if the port is disconnected.
0 — no change in CurrentConnectStatus (CCS)
1 — change in CurrentConnectStatus (CCS)
Remark: If the DeviceRemovable[NDP] bit is set, this bit is set only
after a root hub reset to inform the system that the device is attached.
15 to 10
9
-
reserved
LSDA
On read LowSpeedDeviceAttached: This bit indicates the speed of
the device attached to this port. When set, a low-speed device is
attached to this port. When cleared, a full-speed device is attached to
this port. This field is valid only when CurrentConnectStatus (CCS) is
set.
0 — full-speed device attached
1 — low-speed device attached
On write ClearPortPower: The HCD clears the PortPowerStatus
(PPS) bit by writing logic 1 to this bit. Writing logic 0 has no effect.
8
PPS
On read PortPowerStatus: This bit reflects the port power status,
regardless of the type of power switching implemented. This bit is
cleared if an overcurrent condition is detected. The HCD sets this bit
by writing SetPortPower or SetGlobalPower. The HCD clears this bit
by writing ClearPortPower or ClearGlobalPower. PowerSwitchingMode
(PCM) and PortPowerControlMask[NDP] (PPCM[NDP]) determine
which power control switches are enabled. In global switching mode
(PowerSwitchingMode = 0), only the Set/ClearGlobalPower command
controls this bit. In the per-port power switching
(PowerSwitchingMode = 1), if the PortPowerControlMask[NDP]
(PPCM[NDP]) bit for the port is set, only Set/ClearPortPower
commands are enabled. If the mask is not set, only
Set/ClearGlobalPower commands are enabled. When port power is
disabled, CurrentConnectStatus (CCS), PortEnableStatus (PES),
PortSuspendStatus (PSS) and PortResetStatus (PRS) should be
reset.
0 — port power is off
1 — port power is on
On write SetPortPower: The HCD writes logic 1 to set the
PortPowerStatus (PPS) bit. Writing logic 0 has no effect.
Remark: This bit always reads logic 1 if power switching is not
supported.
7 to 5
-
reserved
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Table 62. HcRhPortStatus[1:2] register: bit description …continued
Bit
Symbol
Description
4
PRS
On read PortResetStatus: When this bit is set by a write to
SetPortReset, port reset signaling is asserted. When reset is
completed, this bit is cleared when PortResetStatusChange (PRSC) is
set. This bit cannot be set if CurrentConnectStatus (CCS) is cleared.
0 — port reset signal is not active
1 — port reset signal is active
On write SetPortReset: The HCD sets the port reset signaling by
writing logic 1 to this bit. Writing logic 0 has no effect. If
CurrentConnectStatus (CCS) is cleared, this write does not set
PortResetStatus (PRS) but instead sets ConnectStatusChange
(CSC). This informs the driver that it attempted to reset a
disconnected port.
3
POCI
On read PortOverCurrentIndicator: This bit is valid only when the
root hub is configured in such a way that overcurrent conditions are
reported on a per-port basis. If per-port overcurrent reporting is not
supported, this bit is set to logic 0. If cleared, all power operations are
normal for this port. If set, an overcurrent condition exists on this port.
This bit always reflects the overcurrent input signal.
0 — no overcurrent condition
1 — overcurrent condition detected
On write ClearSuspendStatus: The HCD writes logic 1 to initiate a
resume. Writing logic 0 has no effect. A resume is initiated only if
PortSuspendStatus (PSS) is set.
2
PSS
On read PortSuspendStatus: This bit indicates whether the port is
suspended or is in the resume sequence. It is set by a
PortSuspendStatus write and cleared when
PortSuspendStatusChange (PSSC) is set at the end of the resume
interval. This bit cannot be set if CurrentConnectStatus (CCS) is
cleared. This bit is also cleared when PortResetStatusChange
(PRSC) is set at the end of the port reset or when the Host Controller
is placed in the USBResume state. If an upstream resume is in
progress, it should propagate to the Host Controller.
0 — port is not suspended
1 — port is suspended
On write SetPortSuspend: The HCD sets the PortSuspendStatus
(PSS) bit by writing logic 1 to this bit. Writing logic 0 has no effect. If
CurrentConnectStatus (CCS) is cleared, this write does not set
PortSuspendStatus (PSS); instead it sets ConnectStatusChange
(CSC). This informs the driver that it attempted to suspend a
disconnected port.
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Single-chip USB OTG Controller
Table 62. HcRhPortStatus[1:2] register: bit description …continued
Bit
Symbol
Description
1
PES
On read PortEnableStatus: This bit indicates whether the port is
enabled or disabled. The root hub may clear this bit when an
overcurrent condition, disconnect event, switched-off power or
operational bus error, such as babble, is detected. This change also
causes PortEnableStatusChange to be set. The HCD sets this bit by
writing SetPortEnable and clears it by writing ClearPortEnable. This bit
cannot be set when CurrentConnectStatus (CCS) is cleared. This bit
is also set, if it is not already, at the completion of a port reset when
PortResetStatusChange is set or port suspend when
PortSuspendStatusChange is set.
0 — port is disabled
1 — port is enabled
On write SetPortEnable: The HCD sets PortEnableStatus (PES) by
writing logic 1. Writing logic 0 has no effect. If CurrentConnectStatus
(CCS) is cleared, this write does not set PortEnableStatus (PES), but
instead sets ConnectStatusChange (CSC). This informs the driver that
it attempted to enable a disconnected port.
0
CCS
On read CurrentConnectStatus: This bit reflects the current state of
the downstream port.
0 — no device connected
1 — device connected
On write ClearPortEnable: The HCD writes logic 1 to this bit to clear
the PortEnableStatus (PES) bit. Writing logic 0 has no effect.
CurrentConnectStatus (CSC) is not affected by any write.
Remark: This bit always reads logic 1 when the attached device is
nonremovable (DeviceRemovable[NDP]).
14.4 HC DMA and interrupt control registers
14.4.1 HcHardwareConfiguration register (R/W: 20h/A0h)
The bit allocation of the HcHardwareConfiguration register is given in Table 63.
Code (Hex): 20 — read
Code (Hex): A0 — write
Table 63. HcHardwareConfiguration register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
Disable
Suspend_
Wakeup
Global
Power
Down
Connect
PullDown
_DS2
Connect
PullDown ClkNotStop
_DS1
Suspend
AnalogOC
Enable
OneINT
DACK
Mode
Reset
Access
Bit
0
R/W
0
R/W
6
0
R/W
5
0
R/W
4
0
R/W
3
0
R/W
2
0
R/W
1
0
R/W
0
7
Symbol
OneDMA
DACKInput
Polarity
DREQ
Output
Polarity
DataBusWidth[1:0]
Interrupt
Output
Polarity
Interrupt
PinTrigger
InterruptPin
Enable
Reset
0
0
1
0
1
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
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Table 64. HcHardwareConfiguration register: bit description
Bit
Symbol
Description
15
DisableSuspend_Wakeup This bit when set to logic 1 disables the function of the
D_SUSPEND/D_WAKEUP and H_SUSPEND/H_WAKEUP
pins. Therefore, these pins will always remain HIGH and
pulling them LOW does not wake-up the Host Controller and
the Peripheral Controller.
14
13
GlobalPowerDown
Set this bit to logic 1 to reduce power consumption of the
OTG ATX in suspend mode.
ConnectPullDown_DS2
0 — disconnect built-in pull-down resistors on H_DM2 and
H_DP2
1 — connect built-in pull-down resistors on H_DM2 and
H_DP2 for the downstream port 2
Remark: Port 2 is always used as a host port.
12
ConnectPullDown_DS1
0 — disconnect built-in pull-down resistors on OTG_DM1 and
OTG_DP1
1 — connect built-in pull-down resistors on OTG_DM1 and
OTG_DP1
Remark: This bit is effective only when port 1 is configured as
the host port (the OTGMODE pin is HIGH, and the ID pin is
LOW). When port 1 is configured as the OTG port, (the
OTGMODE pin is LOW), the pull-down resistors on
OTG_DM1 and OTG_DP1 are controlled by the
LOC_PULL_DN_DP and LOC_PULL_DN_DM bits of the
OtgControl register.
11
10
9
SuspendClkNotStop
AnalogOCEnable
OneINT
0 — clock can be stopped when suspended
1 — clock cannot be stopped when suspended
0 — use external overcurrent detection; digital input
1 — use on-chip overcurrent detection; analog input
0 — Host Controller interrupt routed to INT1, Peripheral
Controller interrupt routed to INT2
1 — Host Controller and Peripheral Controller interrupts
routed to INT1 only, INT2 is unused
8
7
DACKMode
OneDMA
0 — normal operation; DACK1 is used with read and write
signals
1 — reserved
0 — Host Controller DMA request and acknowledge are
routed to DREQ1 and DACK1, Peripheral Controller DMA
request and acknowledge are routed to DREQ2 and DACK2
1 — Host Controller and Peripheral Controller DMA requests
and acknowledges are routed to DREQ1 and DACK1;
DREQ2 and DACK2 unused
6
DACKInputPolarity
0 — DACK1 is active LOW
1 — DACK1 is active HIGH
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Table 64. HcHardwareConfiguration register: bit description …continued
Bit
Symbol
Description
5
DREQOutputPolarity
0 — DREQ1 is active LOW
1 — DREQ1 is active HIGH
4 to 3 DataBusWidth[1:0]
01 — microprocessor interface data bus width is 16 bits
Others — reserved
2
1
0
InterruptOutputPolarity
InterruptPinTrigger
InterruptPinEnable
0 — INT1 interrupt is active LOW; power-up value
1 — INT1 interrupt is active HIGH
0 — INT1 interrupt is level-triggered; power-up value
1 — INT1 interrupt is edge-triggered
0 — power-up value
1 — global interrupt pin INT1 is enabled; this bit should be
used with the HcµPInterruptEnable register to enable
pin INT1
14.4.2 HcDMAConfiguration register (R/W: 21h/A1h)
Table 65 contains the bit allocation of the HcDMAConfiguration register.
Code (Hex): 21 — read
Code (Hex): A1 — write
Table 65. HcDMAConfiguration register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
4
-
7
6
5
3
2
1
0
Symbol
DMACounter
Enable
BurstLen[1:0]
DMA
Enable
Buffer_Type_Select[2:0]
DMARead
WriteSelect
Reset
0
0
0
0
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 66. HcDMAConfiguration register: bit description
Bit
Symbol
Description
reserved
15 to 8
7
-
DMACounterEnable
0 — reserved
1 — DMA counter is enabled. Once the counter is enabled, the
HCD must initialize the HcTransferCounter register to a
non-zero value for DREQ to be raised after the DMAEnable bit
is set to HIGH.
6 to 5
BurstLen[1:0]
00 — single-cycle burst DMA
01 — 4-cycle burst DMA
10 — 8-cycle burst DMA
11 — reserved
I/O bus with 32-bit data path width supports only single and
four cycle DMA burst.
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Table 66. HcDMAConfiguration register: bit description …continued
Bit
Symbol
Description
4
DMAEnable
0 — DMA is disabled
1 — DMA is enabled
This bit needs to be reset when the DMA transfer is completed.
Buffer_Type_Select[2:0] See Table 67.
DMAReadWriteSelect 0 — read from the buffer memory of the Host Controller
1 — write to the buffer memory of the Host Controller
3 to 1
0
Table 67. Buffer_Type_Select[2:0]: bit description
Bit 3
Bit 2
Bit 1
Buffer Type
ISTL0 (default)
ISTL1
0
0
0
0
1
0
0
1
1
X
0
1
0
1
X
INTL
ATL
direct addressing
14.4.3 HcTransferCounter register (R/W: 22h/A2h)
Regardless of PIO or DMA data transfer modes, this register is used to initialize the
number of bytes to be transferred to or from the ISTL, INTL or ATL buffer RAM. For the
count value loaded in the register to take effect, the HCD is required to set bit 7 of the
HcDMAConfiguration register to logic 1. When the count value has reached, the Host
Controller must generate an internal EOT signal to set bit 2 of the HcµPInterrupt register,
AllEOTInterrupt, and update the HcBufferStatus register. The bit allocation of the
HcTransferCounter register is given in Table 68.
Code (Hex): 22 — read
Code (Hex): A2 — write
Table 68. HcTransferCounter register: bit description
Bit
Symbol
Access Value
0000h
Description
15 to 0
CounterValue[15:0] R/W
Number of data bytes to be read from or written to the buffer RAM.
14.4.4 HcµPInterrupt register (R/W: 24h/A4h)
All the bits in this register are active at power-on reset. None of the active bits, however,
will cause an interrupt on the interrupt pin (INT1), unless they are set by the respective
bits in the HcµPInterruptEnable register and bit 0 of the HcHardwareConfiguration register
is also set.
The bits in this register are cleared only when you write to this register, indicating the bits
to be cleared. To clear all the enabled bits in this register, the HCD must write FFh to this
register.
The bit allocation of the HcµPInterrupt register is given in Table 69.
Code (Hex): 24 — read
Code (Hex): A4 — write
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Table 69. HcµPInterrupt register: bit allocation
Bit
15
14
13
12
11
10
9
8
ATL_IRQ
0
Symbol
Reset
Access
Bit
reserved
OTG_IRQ
-
-
-
-
-
-
-
-
-
-
0
R/W
1
-
7
-
6
R/W
5
4
3
2
0
Symbol
INTL_IRQ
ClkReady
HC
Suspended
OPR_Reg
AllEOT
Interrupt
ISTL1_
INT
ISTL0_
INT
SOF_INT
Reset
0
0
0
0
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 70. HcµPInterrupt register: bit description
Bit
Symbol
Description
15 to 10
9
-
reserved
OTG_IRQ 0 — no event
1 — The OTG interrupt event must read the OtgInterrupt register to get
the cause of the interrupt.
8
7
ATL_IRQ
0 — no event
1 — Count value of the HcATLPTDDoneThresholdCount register or the
time-out value of the HcATLPTDDoneThresholdTimeOut register has
reached. The microprocessor is required to read HcATLPTDDoneMap to
check the PTDs that have completed their transactions.
INTL_IRQ 0 — no event
1 — The Host Controller has detected the last PTD, and there is at least
one interrupt transaction that has received ACK from the device. The
microprocessor is required to read HcINTLPTDDoneMap to check the
PTDs that have received ACK from the device.
6
5
ClkReady 0 — no event
1 — The Host Controller has awakened from the ‘suspend’ state, and its
internal clock has turned on again.
HC
0 — no event
Suspended
1 — The Host Controller has been suspended and no USB activities are
sent from the microprocessor for each ms. The microprocessor can
suspend the Host Controller by setting bits 6 and 7 of the HcControl
register to logic 1. Once the Host Controller is suspended, no SOF needs
to be sent to the devices connected to downstream ports.
4
3
OPR_Reg 0 — no event
1 — A Host Controller operation has caused a hardware interrupt. It is
necessary for the HCD to read the HcInterruptStatus register to determine
the cause of the interrupt.
AllEOT
0 — no event
Interrupt
1 — Data transfer has been completed by using the PIO transfer or the
DMA transfer. This bit is set either when the value of the
HcTransferCounter register has reached zero, or the EOT pin of the Host
Controller is triggered by an external signal.
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Table 70. HcµPInterrupt register: bit description …continued
Bit
Symbol
Description
2
ISTL1_
INT
0 — no event
1 — The transaction of the last PTD stored in the ISTL1 buffer has been
completed. The microprocessor is required to read data from the ISTL1
buffer. The HCD must first read the HcBufferStatus register to check the
status of the ISTL1 buffer, before reading data to the microprocessor.
1
0
ISTL0_
INT
0 — no event
1 — The transaction of the last PTD stored in the ISTL0 buffer has been
completed. The microprocessor is required to read data from the ISTL0
buffer. The HCD must first read the HcBufferStatus register to check the
status of the ISTL0 buffer, before reading data to the microprocessor.
SOF_INT
0 — no event
1 — The Host Controller is in the SOF state and it indicates the start of a
new frame. The HCD must first read the HcBufferStatus register to check
the status of the ISTL buffer, before reading data to the microprocessor.
For the microprocessor to perform the DMA transfer of ISO data from or to
the ISTL buffer, the Host Controller must first initialize the
HcDMAConfiguration register.
14.4.5 HcµPInterruptEnable register (R/W: 25h/A5h)
Bits 9 to 0 in this register are the same as those in the HcµPInterrupt register. The bits in
this register are used together with bit 0 of the HcHardwareConfiguration register to
enable or disable the bits in the HcµPInterrupt register.
At power-on, all the bits in this register are masked with logic 0. This means no interrupt
request output on interrupt pin INT1 can be generated. When a bit is set to logic 1, the
interrupt for that bit is enabled.
The bit allocation of the register is given in Table 71.
Code (Hex): 25 — read
Code (Hex): A5 — write
Table 71. HcµPInterruptEnable register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
reserved
OTG_IRQ_ ATL_IRQ_
Interrupt
Enable
Interrupt
Enable
Reset
Access
Bit
-
-
-
-
-
-
-
-
-
-
-
-
0
R/W
1
0
R/W
0
7
6
5
4
3
2
Symbol
INTL_IRQ_ ClkReady
Interrupt
Enable
HC
Suspended
Enable
OPR
Interrupt
Enable
EOT
Interrupt
Enable
ISTL1
Interrupt
Enable
ISTL0
Interrupt
Enable
SOF
Interrupt
Enable
Reset
0
0
0
0
0
0
0
0
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
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Table 72. HcµPInterruptEnable register: bit description
Bit
Symbol
Description
15 to 10
9
-
reserved
OTG_IRQ_InterruptEnable 0 — power-up value
1 — enables the OTG_IRQ interrupt
ATL_IRQ_InterruptEnable 0 — power-up value
1 — enables the ATL_IRQ interrupt
INTL_IRQ_InterruptEnable 0 — power-up value
1 — enables the INT_IRQ interrupt
0 — power-up value
8
7
6
5
4
3
2
1
0
ClkReady
1 — enables the ClkReady interrupt
0 — power-up value
HCSuspendedEnable
OPRInterruptEnable
EOTInterruptEnable
ISTL1InterruptEnable
ISTL0InterruptEnable
SOFInterruptEnable
1 — enables the Host Controller suspended interrupt
0 — power-up value
1 — enables the 32-bit operational register’s interrupt
0 — power-up value
1 — enables the EOT interrupt
0 — power-up value
1 — enables the ISTL1 interrupt
0 — power-up value
1 — enables the ISTL0 interrupt
0 — power-up value
1 — enables the SOF interrupt
14.5 HC miscellaneous registers
14.5.1 HcChipID register (R: 27h)
This register contains the ID of the ISP1362. The upper byte identifies the product name
(here 36h stands for the ISP1362). The lower byte indicates the revision number of the
product, including engineering samples. Table 73 contains the bit description of the
register.
Code (Hex): 27 — read only
Table 73. HcChipID register: bit description
Bit
Symbol
Access
Value
Description
15 to 0
CHIPID[15:0]
R
3630h
chip ID of the ISP1362.
14.5.2 HcScratch register (R/W: 28h/A8h)
This register is for the HCD to save and restore values when required. The bit description
is given in Table 74.
Code (Hex): 28 — read
Code (Hex): A8 — write
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Table 74. HcScratch register: bit description
Bit
Symbol
Access
Value
Description
15 to 0
Scratch[15:0]
R/W
0000h
scratch register value.
14.5.3 HcSoftwareReset register (W: A9h)
This register provides a means for the software reset of the Host Controller. To reset the
Host Controller, the HCD must write a reset value of F6h to this register. On receiving this
reset value, the Host Controller resets all the Host Controller and OTG registers, except its
buffer memory.
Table 75 contains the bit description of the register.
Code (Hex): A9 — write only
Table 75. HcSoftwareReset register: bit description
Bit
Symbol
Access
Value
Description
15 to 0
ResetValue[15:0] W
0000h
Writing a reset value of F6h causes the Host Controller to reset all the
Host Controller and OTG registers, except its buffer memory.
14.6 HC buffer RAM control registers
14.6.1 HcBufferStatus register (R/W: 2Ch/ACh)
The bit allocation of the HcBufferStatus register is given in Table 76.
Code (Hex): 2C — read
Code (Hex): AC — write
Table 76. HcBufferStatus register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
reserved
PairedPTD
ISTL1
ISTL0
PingPong BufferDone BufferDone
Reset
Access
Bit
-
-
-
-
-
-
-
-
-
0
R
2
0
R
1
0
R
0
-
7
6
5
4
3
Symbol
reserved
ISTL1_
Active
Status
ISTL0_
Active
Status
Reset_HW ATL_Active
PingPong
Reg
INTL_
Active
ISTL1
BufferFull
ISTL0
BufferFull
Reset
-
-
0
0
0
0
0
0
0
Access
R
R
R/W
R/W
R/W
R/W
R/W
Table 77. HcBufferStatus register: bit description
Bit
Symbol
Description
15 to 11
10
-
reserved
PairedPTDPingPong 0 — Ping of the paired PTD in ATL is active.
1 — Pong of the paired PTD in ATL is active.
9
ISTL1BufferDone
0 — The ISTL1 buffer has not yet been read by the Host
Controller.
1 — The ISTL1 buffer has been read by the Host Controller.
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Table 77. HcBufferStatus register: bit description …continued
Bit
Symbol
Description
8
ISTL0BufferDone
0 — The ISTL0 buffer has not yet been read by the Host
Controller.
1 — The ISTL0 buffer has been read by the Host Controller.
7
6
-
reserved
ISTL1_ActiveStatus 0 — The ISTL1 buffer is not accessed by the slave host.
1 — The ISTL1 buffer is accessed by the slave host.
5
4
ISTL0_ActiveStatus 0 — The ISTL0 buffer is not accessed by the slave host.
1 — The ISTL0 buffer is accessed by the slave host.
Reset_HWPingPong 0 to 1 — Resets the internal hardware ping pong register to 0
Reg
when ATL_Active is 0. The hardware ping pong register can be
read from bit 10 of this register.
1 to 0 — Has no effect.
3
2
1
0
ATL_Active
0 — The Host Controller does not process the ATL buffer.
1 — The Host Controller processes the ATL buffer.
0 — The Host Controller does not process the INTL buffer.
1 — The Host Controller processes the INTL buffer.
0 — The Host Controller does not process the ISTL1 buffer.
1 — The Host Controller processes the ISTL1 buffer.
0 — The Host Controller does not process the ISTL0 buffer.
1 — The Host Controller processes the ISTL0 buffer.
INTL_Active
ISTL1BufferFull
ISTL0BufferFull
14.6.2 HcDirectAddressLength register (R/W: 32h/B2h)
The HcDirectAddressLength register is used for direct addressing of the ISTL, INTL or
ATL buffers. This register specifies the starting address of the buffer and byte count of
data to be addressed. Therefore, it allows the programmer to randomly access the buffer.
The bit allocation of the register is given in Table 78.
Code (Hex): 32 — read
Code (Hex): B2 — write
Table 78. HcDirectAddressLength register: bit allocation
Bit
31
30
29
28
27
26
25
24
Symbol
Reset
Access
Bit
DataByteCount[15:8]
0
0
0
0
0
0
0
0
R/W
23
R/W
22
R/W
21
R/W
20
R/W
19
R/W
18
R/W
17
R/W
16
Symbol
Reset
Access
Bit
DataByteCount[7:0]
0
0
0
0
0
0
0
R/W
9
0
R/W
8
R/W
R/W
14
R/W
13
R/W
12
R/W
11
R/W
10
15
Symbol
Reset
Access
reserved
BufferStartAddress[14:8]
0
0
-
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
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Bit
7
6
5
4
3
2
1
0
Symbol
Reset
Access
BufferStartAddress[7:0]
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 79. HcDirectAddressLength register: bit description
Bit
Symbol
Description
31 to 16
15
DataByteCount[15:0]
-
Total number of bytes to be accessed.
reserved
14 to 0
BufferStartAddress[14:0] The starting address of the buffer to access data.
14.6.3 HcDirectAddressData register (R/W: 45h/C5h)
This is a data port for the HCD to access the ISTL, INTL or ATL buffers under direct
addressing mode. Table 80 contains the bit description of the register.
Code (Hex): 45 — read
Code (Hex): C5 — write
Table 80. HcDirectAddressData register: bit description
Bit Symbol Access Value Description
15 to 0 DataWord R/W
[15:0]
0000h The data port to access the ISTL, INTL or ATL buffers. The address of the buffer and
byte count of the data must be specified in the HcDirectAddressLength register.
14.7 Isochronous (ISO) transfer registers
14.7.1 HcISTLBufferSize register (R/W: 30h/B0h)
This register requires you to allocate the size of the buffer to be used for ISO transactions.
The buffer size specified in the register is applied to the ISTL0 and ISTL1 buffers.
Therefore, ISTL0 and ISTL1 always have the same buffer size.
Table 81 shows the bit description of the register.
Code (Hex): 30 — read
Code (Hex): B0 — write
Table 81. HcISTLBufferSize register: bit description
Bit
Symbol
Access Value
Description
15 to 0 ISTLBufferSize[15:0] R/W
0000h The size of the buffer to be used for ISO transactions and must be
specified in bytes.
14.7.2 HcISTL0BufferPort register (R/W: 40h/C0h)
In addition to the HcDirectAddressData register, the ISP1362 provides this register to act
as another data port to access the ISTL0 buffer. The starting address to access the buffer
is always fixed at 0000h. Therefore, random access of the ISTL0 buffer is not allowed. The
bit description of the register is given in Table 82.
Code (Hex): 40 — read
Code (Hex): C0 — write
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Table 82. HcISTL0BufferPort register: bit description
Bit
Symbol
Access
Value
Description
The data in the ISTL0 buffer to be accessed through this data port.
15 to 0 DataWord[15:0] R/W
0000h
The HCD is first required to initialize the HcTransferCounter register with the byte count to
be transferred and check the HcBufferStatus register. The HCD then sends the command
(40h to read from the ISTL0 buffer, and C0h to write to the ISTL0 buffer) to the Host
Controller through the I/O port of the microprocessor. After the command is sent, the HCD
starts reading data from the ISTL0 buffer or writing data to the ISTL0 buffer. While the
HCD is accessing the buffer, the buffer pointer of ISTL0 also automatically increases.
When the pointer has reached the initialized byte count of the HcTransferCounter register,
the Host Controller sets the AllEOTInterrupt bit of the HcµPInterrupt register to logic 1 and
updates the HcBufferStatus register.
14.7.3 HcISTL1BufferPort register (R/W: 42h/C2h)
In addition to the HcDirectAddressData register, the ISP1362 provides this register to act
as another data port to access the ISTL1 buffer. The starting address to access the buffer
is always fixed at 0000h. Therefore, random access of the ISTL1 buffer is not allowed. The
bit description of the register is given in Table 83.
Code (Hex): 42 — read
Code (Hex): C2 — write
Table 83. HcISTL1BufferPort register: bit description
Bit
Symbol
Access Value
0000h
Description
15 to 0
DataWord[15:0] R/W
Data in the ISTL1 buffer to be accessed through this data port.
The HCD is first required to initialize the HcTransferCounter register with the byte count to
be transferred and check the HcBufferStatus register. The HCD then sends the command
(42h to read from the ISTL1 buffer, and C2h to write to the ISTL1 buffer) to the Host
Controller through the I/O port of the microprocessor. After the command is sent, the HCD
starts reading data from the ISTL1 buffer or writing data to the ISTL1 buffer. While the
HCD is accessing the buffer, the buffer pointer of ISTL1 also automatically increases.
When the pointer has reached the initialized byte count of the HcTransferCounter register,
the Host Controller sets the AllEOTInterrupt bit in the HcµPInterrupt register to logic 1 and
updates the HcBufferStatus register.
14.7.4 HcISTLToggleRate register (R/W: 47h/C7h)
The rate of toggling between ISTL0 and ISTL1 is programmable. The HcISTLToggleRate
register is provided to program the required toggle rate in the range of 0 ms to 15 ms at
intervals of 1 ms. The bit allocation of the register is shown in Table 84.
Code (Hex): 47 — read
Code (Hex): C7 — write
Table 84. HcISTLToggleRate register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
Reset
Access
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
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Bit
7
6
5
4
3
2
1
0
Symbol
Reset
Access
reserved
ISTLToggleRate[3:0]
-
-
-
-
-
-
-
-
0
0
0
0
R/W
R/W
R/W
R/W
Table 85. HcISTLToggleRate register: bit description
Bit
Symbol
Description
15 to 4
3 to 0
-
reserved
ISTLToggleRate[3:0]
The required toggle rate in ms.
14.8 Interrupt transfer registers
14.8.1 HcINTLBufferSize register (R/W: 33h/B3h)
This register allows you to allocate the size of the INTL buffer to be used for interrupt
transactions. The default value of the buffer size is set to 128 bytes, and the maximum
allowable allocated size is 4096 bytes. Table 86 shows the bit description of the register.
Code (Hex): 33 — read
Code (Hex): B3 — write
Table 86. HcINTLBufferSize register: bit description
Bit
Symbol
Access
Value
Description
15 to 0 INTLBufferSize[15:0] R/W
0080h
The size of the buffer to be used for interrupt transactions and must
be specified in bytes.
14.8.2 HcINTLBufferPort register (R/W: 43h/C3h)
In addition to the HcDirectAddressData register, the ISP1362 provides this register to act
as another data port to access the INTL buffer. The starting address to access the buffer
is always fixed at 0000h. Therefore, random access of the INTL buffer is not allowed. The
bit description of the HcINTLBufferPort register is given in Table 87.
Code (Hex): 43 — read
Code (Hex): C3 — write
Table 87. HcINTLBufferPort register: bit description
Bit
Symbol
Access Value
0000h
Description
15 to 0
DataWord[15:0] R/W
Data in the INTL buffer to be accessed through this data port.
The HCD is first required to initialize the HcTransferCounter register with the byte count to
be transferred and check the HcBufferStatus register. The HCD then sends the command
(43h to read the INTL buffer, and C3h to write to the INTL buffer) to the Host Controller
through the I/O port of the microprocessor. After the command is sent, the HCD starts
reading data from the INTL buffer or writing data to the INTL buffer. While the HCD is
accessing the buffer, the buffer pointer of INTL also automatically increases. When the
pointer has reached the initialized byte count of the HcTransferCounter register, the Host
Controller sets the AllEOTInterrupt bit of the HcµPInterrupt register to logic 1 and updates
the HcBufferStatus register.
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14.8.3 HcINTLBlkSize register (R/W: 53h/D3h)
The ISP1362 requires the INTL buffer to be partitioned into several equal sized blocks so
that the Host Controller can skip the current PTD and proceed to process the next PTD
easily. The block size of the INTL buffer is required to be specified in this register and must
be a multiple of 8 bytes. The default value of the block size is 64 bytes, and the maximum
allowable block size is 1024 bytes. Table 88 shows the bit allocation of the register.
Code (Hex): 53 — read
Code (Hex): D3 — write
Table 88. HcINTLBlkSize register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
reserved
BlockSize[9:8]
-
-
-
-
-
-
-
-
-
-
-
-
0
R/W
1
0
R/W
0
7
6
5
4
3
2
Symbol
Reset
Access
BlockSize[7:0]
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 89. HcINTLBlkSize register: bit description
Bit
Symbol
Description
15 to 10
9 to 0
-
reserved
BlockSize[9:0]
The block size of the INTL buffer.
14.8.4 HcINTLPTDDoneMap register (R: 17h)
This is a 32-bit register, and the bit description is given in Table 90. Every bit of the
register represents the processing status of a PTD. Bit 0 of the register represents the first
PTD stored in the INTL buffer, bit 1 represents the second PTD stored in the buffer, and so
on. The register is updated once every ms by the Host Controller and is cleared on read
by the HCD. Bits that are set represent its corresponding PTDs are processed by the Host
Controller and the ACK token is received from the device.
Code (Hex): 17 — read only
Table 90. HcINTLPTDDoneMap register: bit description
Bit
Symbol
Access
Value
Description
31 to 0 PTDDoneBits[31:0]
R
0000h
0 — The PTD stored in the INTL buffer has not successfully been
processed by the Host Controller.
1 — The PTD stored in the INTL buffer has successfully been
processed by the Host Controller.
14.8.5 HcINTLPTDSkipMap register (R/W: 18h/98h)
This is a 32-bit register, and the bit description is given in Table 91. Bit 0 of the register
represents the first PTD stored in the INTL buffer, bit 1 represents the second PTD stored
in the buffer, and so on. When a bit is set by the HCD, the corresponding PTD is skipped
and is not processed by the Host Controller. The Host Controller processes the skipped
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PTD if the HCD has reset its corresponding skipped bit to logic 0. Clearing the
corresponding bit in the HcINTLPTDSkipMap register when there is no valid data in the
block will cause unpredictable behavior of the Host Controller.
Code (Hex): 18 — read
Code (Hex): 98 — write
Table 91. HcINTLPTDSkipMap register: bit description
Bit
Symbol
Access
Value
Description
31 to 0
SkipBits[31:0] R/W
0000h
0 — The Host Controller processes the PTD.
1 — The Host Controller skips processing the PTD.
14.8.6 HcINTLLastPTD register (R/W: 19h/99h)
This is a 32-bit register, and Table 92 shows its bit description. Bit 0 of the register
represents the first PTD stored in the INTL buffer, bit 1 represents the second PTD stored
in the buffer, and so on. The bit that is set to logic 1 by the HCD is used as an indication to
the Host Controller that its corresponding PTD is the last PTD stored in the INTL buffer.
When the processing of the last PTD is complete, the Host Controller proceeds to process
ATL transactions.
Code (Hex): 19 — read
Code (Hex): 99 — write
Table 92. HcINTLLastPTD register: bit description
Bit
Symbol
Access
Value
Description
31 to 0 LastPTDBits[31:0] R/W
0000h
0 — The PTD is not the last PTD stored in the buffer.
1 — The PTD is the last PTD stored in the buffer.
14.8.7 HcINTLCurrentActivePTD register (R: 1Ah)
This register indicates which PTD stored in the INTL buffer is currently active and is
updated by the Host Controller. The HCD can use it as a buffer pointer to decide which
PTD locations are currently free to fill in new PTDs to the buffer. This indication is to
prevent the HCD from accidentally writing into the currently active PTD buffer location.
Table 93 shows the bit allocation of the register.
Code (Hex): 1A — read only
Table 93. HcINTLCurrentActivePTD register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
7
6
5
4
3
2
1
0
Symbol
Reset
Access
reserved
ActivePTD[4:0]
-
-
-
-
-
-
0
0
0
0
0
R
R
R
R
R
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Table 94. HcINTLCurrentActivePTD register: bit description
Bit
Symbol
Description
15 to 5
4 to 0
-
reserved
ActivePTD[4:0]
This 5-bit number represents the PTD that is currently active.
14.9 Control and bulk transfer (aperiodic transfer) registers
14.9.1 HcATLBufferSize register (R/W: 34h/B4h)
This register allows you to allocate the size of the ATL buffer to be used for aperiodic
transactions. The default value of the buffer size is set to 512 bytes, and the maximum
allowable allocated size is 4096 bytes. The bit description of the register is given in
Table 95.
Code (Hex): 34 — read
Code (Hex): B4 — write
Table 95. HcATLBufferSize register: bit description
Bit Symbol Access Value
15 to 0 ATLBufferSize[15:0] R/W 0200h
Description
The size of the buffer to be used for aperiodic transactions and must
be specified in bytes.
14.9.2 HcATLBufferPort register (R/W: 44h/C4h)
In addition to the HcDirectAddressData register, the ISP1362 provides this register to act
as another data port to access the ATL buffer. The starting address to access the buffer is
always fixed at 0000h. Therefore, random access of the ATL buffer is not allowed. The bit
description of the HcATLBufferPort register is given in Table 96.
Code (Hex): 44 — read
Code (Hex): C4 — write
Table 96. HcATLBufferPort register: bit description
Bit
Symbol
Access
Value
Description
15 to 0
DataWord[15:0] R/W
0000h
The data of the ATL buffer to be accessed through this data port.
The HCD is first required to initialize the HcTransferCounter register with the byte count to
be transferred and check the HcBufferStatus register. The HCD then sends the command
(44h to read from the ATL buffer, and C4h to write to the ATL buffer) to the Host Controller
through the I/O port of the microprocessor. After the command is sent, the HCD starts
reading data from the ATL buffer or writing data to the ATL buffer. While the HCD is
accessing the buffer, the buffer pointer of ATL also automatically increases. When the
pointer has reached the initialized byte count of the HcTransferCounter register, the Host
Controller sets the AllEOTInterrupt bit of the HcµPInterrupt register to logic 1 and updates
the HcBufferStatus register.
14.9.3 HcATLBlkSize register (R/W: 54h/D4h)
The ISP1362 partitions the ATL buffer into several equal sized blocks so that the Host
Controller can skip the current PTD and proceed to process the next PTD easily. The
block size of the ATL buffer must be specified in this register and must be a multiple of
8 bytes. The bit allocation of the HcATLBlkSize register is given in Table 97.
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Code (Hex): 54 — read
Code (Hex): D4 — write
Table 97. HcATLBlkSize register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
reserved
BlockSize[9:8]
-
-
-
-
-
-
-
-
-
-
-
-
0
R/W
1
0
R/W
0
7
6
5
4
3
2
Symbol
Reset
Access
BlockSize[7:0]
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 98. HcATLBlkSize register: bit description
Bit
Symbol
Description
15 to 10
9 to 0
-
reserved
BlockSize[9:0] The block size of the ATL buffer.
14.9.4 HcATLPTDDoneMap register (R: 1Bh)
This is a 32-bit register. The bit description of the register is given in Table 99. Every bit of
the register represents the processing status of a PTD. Bit 0 of the register represents the
first PTD stored in the ATL buffer, bit 1 represents the second PTD stored in the buffer,
and so on. The register is immediately updated after the completion of each ATL PTD
processing. It is cleared when read by the HCD. Bits that are set represent its
corresponding PTDs have been processed by the Host Controller and an ACK token has
been received from the device.
Code (Hex): 1B — read only
Table 99. HcATLPTDDoneMap register: bit description
Bit
Symbol
Access Value
0000h
Description
31 to 0 PTDDoneBits
[31:0]
R
0 — The PTD stored in the ATL buffer was not successfully processed by the
Host Controller.
1 — The PTD stored in the ATL buffer was successfully processed by the
Host Controller.
14.9.5 HcATLPTDSkipMap register (R/W: 1Ch/9Ch)
This is a 32-bit register, and the bit description is given in Table 100. Bit 0 of the register
represents the first PTD stored in the ATL buffer, bit 1 represents the second PTD stored
in the buffer, and so on. When the bit is set by the HCD, the corresponding PTD is skipped
and is not processed by the Host Controller. The Host Controller processes the skipped
PTD only if the HCD has reset its corresponding skipped bit to logic 0. Clearing the
corresponding bit in the HcATLPTDSkipMap register when there is no valid data in the
block will cause unpredictable behavior of the Host Controller.
Code (Hex): 1C — read
Code (Hex): 9C — write
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Table 100. HcATLPTDSkipMap register: bit description
Bit
Symbol
Access
Value
Description
31 to 0
SkipBits
[31:0]
R/W
0000h
0 — The Host Controller processes the PTD.
1 — The Host Controller skips processing the PTD.
14.9.6 HcATLLastPTD register (R/W: 1Dh/9Dh)
This is a 32-bit register. Table 101 gives the bit description of the register. Bit 0 of the
register represents the first PTD stored in the ATL buffer, bit 1 represents the second PTD
stored in the buffer, and so on. The bit that is set to logic 1 by the HCD is used as an
indication to the Host Controller that its corresponding PTD is the last PTD stored in the
ATL buffer. When the processing of the last PTD is complete, the Host Controller loops
back to process the first PTD stored in the buffer.
Code (Hex): 1D — read
Code (Hex): 9D — write
Table 101. HcATLLastPTD register: bit description
Bit
Symbol
Access
Value
Description
31 to 0
LastPTD
Bits[31:0]
R/W
0000h
0 — The PTD is not the last PTD stored in the buffer.
1 — The PTD is the last PTD stored in the buffer.
14.9.7 HcATLCurrentActivePTD register (R: 1Eh)
This register indicates which PTD stored in the ATL buffer is currently active and is
updated by the Host Controller. The HCD can use it as a buffer pointer to decide which
PTD locations are currently free to fill in new PTDs to the buffer. This indication helps to
prevent the HCD from accidentally writing into the currently active PTD buffer location.
Table 102 shows the bit allocation of the register.
Code (Hex): 1E — read only
Table 102. HcATLCurrentActivePTD register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
7
6
5
4
3
2
1
0
Symbol
Reset
Access
reserved
ActivePTD[4:0]
-
-
-
-
-
-
0
0
0
0
0
R
R
R
R
R
Table 103. HcATLCurrentActivePTD register: bit description
Bit
Symbol
Description
15 to 5
4 to 0
-
reserved
ActivePTD[4:0] This 5-bit number represents the PTD that is currently active.
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14.9.8 HcATLPTDDoneThresholdCount register (R/W: 51h/D1h)
This register specifies the number of ATL PTDs to be done to trigger an ATL interrupt. If
set to 08h, the Host Controller will trigger the ATL interrupt (in the HcµPInterrupt register)
once every eight ATL PTDs are done. Table 104 shows the bit allocation of the register.
Remark: Do not write 0000h to this register.
Code (Hex): 51 — read
Code (Hex): D1 — write
Table 104. HcATLPTDDoneThresholdCount register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
7
6
5
4
3
2
1
0
Symbol
Reset
Access
reserved
PTDDoneCount[4:0]
-
-
-
-
-
-
0
0
0
0
1
R/W
R/W
R/W
R/W
R/W
Table 105. HcATLPTDDoneThresholdCount register: bit description
Bit
Symbol
Description
15 to 5
4 to 0
-
reserved
PTDDoneCount Number of PTDs to be processed by the Host Controller to generate an
[4:0] ATL interrupt.
14.9.9 HcATLPTDDoneThresholdTimeOut register (R/W: 52h/D2h)
This is a time-out register used to generate an ATL interrupt. The value in this register
indicates the maximum allowable time in milliseconds for the Host Controller to retry a
NAK transaction. This register can be used in combination with
HcATLPTDDoneThresholdCount. Table 106 shows the bit allocation of the
HcATLPTDDoneThresholdCount register.
Remark: If the time-out indication is not required by software, or there is no active PTD in
the ATL buffer, write 0000h to this register.
Code (Hex): 52 — read
Code (Hex): D2 — write
Table 106. HcATLPTDDoneThresholdTimeOut register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
7
6
5
4
3
2
1
0
Symbol
Reset
Access
PTDDoneTimeOut[7:0]
0
0
0
0
0
0
0
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
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Table 107. HcATLPTDDoneThresholdTimeOut register: bit description
Bit
Symbol
Description
15 to 8
7 to 0
-
reserved
PTDDoneTimeOut[7:0 Maximum allowable time in ms for the Host Controller to retry a
transaction with NAK returned.
]
15. Peripheral Controller registers
The functions and registers of the Peripheral Controller are accessed using commands,
which consist of a command code followed by optional data bytes (read or write action).
An overview of the available commands and registers is given in Table 108.
A complete access consists of two phases:
1. Command phase: when address pin A0 = HIGH, the Peripheral Controller interprets
the data on the lower byte of the bus (bits D7 to D0) as command code. Commands
without a data phase are immediately executed.
2. Data phase (optional): when address pin A0 = LOW, the Peripheral Controller
transfers the data on the bus to or from a register or endpoint buffer memory. In case
of multi-byte registers, the least significant byte or word is accessed first.
The following applies to a register or buffer memory access in 16-bit bus mode:
• The upper byte (bits D15 to D8) in the command phase or the undefined byte in the
data phase are ignored.
• The access of registers is word-aligned: byte access is not allowed.
• If the packet length is odd, the upper byte of the last word in an IN endpoint buffer is
not transmitted to the host. When reading from an OUT endpoint buffer, the upper
byte of the last word must be ignored by the firmware. The packet length is stored in
the first two bytes of the endpoint buffer.
Table 108. Peripheral Controller command and register overview
Name
Destination
Code (Hex)
Transaction[1]
Initialization commands
Write control OUT configuration
DcEndpointConfiguration register 20
endpoint 0 OUT
write 1 byte[2]
write 1 byte[2]
write 1 byte[2]
read 1 byte[2]
read 1 byte[2]
read 1 byte[2]
Write control IN configuration
DcEndpointConfiguration register 21
endpoint 0 IN
Write endpoint n configuration (n = 1
to 14)
DcEndpointConfiguration register 22 to 2F
endpoint 1 to 14
Read control OUT configuration
DcEndpointConfiguration register 30
endpoint 0 OUT
Read control IN configuration
DcEndpointConfiguration register 31
endpoint 0 IN
Read endpoint n configuration (n = 1 DcEndpointConfiguration register 32 to 3F
to 14)
endpoint 1 to 14
DcAddress register
DcMode register
Write or read device address
Write or read Mode register
B6/B7
B8/B9
write or read 1 byte[2]
write or read 1 byte[2]
write or read 2 bytes
Write or read hardware configuration DcHardwareConfiguration register BA/BB
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Table 108. Peripheral Controller command and register overview …continued
Name
Destination
Code (Hex)
Transaction[1]
Write or read DcInterruptEnable
register
DcInterruptEnable register
C2/C3
write or read 4 bytes
Write or read DMA configuration
Write or read DMA counter
Reset device
DcDMAConfiguration register
DcDMACounter register
resets all registers
F0/F1
F2/F3
F6
write or read 2 bytes
write or read 2 bytes
-
Data flow commands
Write control OUT buffer
Write control IN buffer
illegal: endpoint is read-only
buffer memory endpoint 0 IN
(00)
-
01
N ≤ 64 bytes
Write endpoint n buffer (n = 1 to 14)
buffer memory endpoint 1 to 14
(IN endpoints only)
02 to 0F
isochronous: N ≤
1023 bytes
interrupt/bulk: N ≤ 64 bytes
Read control OUT buffer
buffer memory endpoint 0 OUT
illegal: endpoint is write-only
10
N ≤ 64 bytes
Read control IN buffer
(11)
-
Read endpoint n buffer (n = 1 to 14)
buffer memory endpoint 1 to 14
(OUT endpoints only)
12 to 1F
isochronous: N ≤
1023 bytes[3]
interrupt/bulk: N ≤ 64 bytes
Stall control OUT endpoint
Stall control IN endpoint
Stall endpoint n (n = 1 to 14)
Read control OUT status
endpoint 0 OUT
endpoint 0 IN
40
-
41
-
endpoint 1 to 14
42 to 4F
50
-
DcEndpointStatus register
endpoint 0 OUT
read 1 byte[2]
Read control IN status
DcEndpointStatus register
endpoint 0 IN
51
read 1 byte[2]
read 1 byte[2]
Read endpoint n status (n = 1 to 14)
DcEndpointStatus register n
endpoint 1 to 14
52 to 5F
Validate control OUT buffer
Validate control IN buffer
illegal: IN endpoints only[4]
buffer memory endpoint 0 IN[4]
(60)
-
-
-
61
Validate endpoint n buffer (n = 1 to 14) buffer memory endpoint 1 to 14
(IN endpoints only)[4]
62 to 6F
Clear control OUT buffer
buffer memory endpoint 0 OUT
illegal[5]
70
-
-
Clear control IN buffer
(71)
Clear endpoint n buffer (n = 1 to 14)
buffer memory endpoint 1 to 14
(OUT endpoints only)[5]
72 to 7F
Unstall control OUT endpoint
Unstall control IN endpoint
Unstall endpoint n (n = 1 to 14)
Check control OUT status[6]
endpoint 0 OUT
endpoint 0 IN
80
-
81
-
endpoint 1 to 14
82 to 8F
-
DcEndpointStatusImage register D0
endpoint 0 OUT
read 1 byte[2]
Check control IN status[6]
DcEndpointStatusImage register D1
endpoint 0 IN
read 1 byte[2]
read 1 byte[2]
-
Check endpoint n status (n = 1 to
14)[6]
DcEndpointStatusImageregister n D2 to DF
endpoint 1 to 14
Acknowledge set up
endpoint 0 IN and OUT
F4
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Table 108. Peripheral Controller command and register overview …continued
Name
Destination
Code (Hex)
Transaction[1]
General commands
Read control OUT error code
DcErrorCode register endpoint 0 A0
OUT
read 1 byte[2]
read 1 byte[2]
read 1 byte[2]
Read control IN error code
DcErrorCode register endpoint 0 A1
IN
Read endpoint n error code (n = 1 to
14)
DcErrorCode register endpoint 1 A2 to AF
to 14
Unlock device
all registers with write access
DcScratch register
B0
write 2 bytes
Write or read DcScratch register
Read frame number
Read chip ID
B2/B3
B4
write or read 2 bytes
read 1 byte or 2 bytes
read 2 bytes
DcFrameNumber register
DcChipID register
B5
Read DcInterrupt register
DcInterrupt register
C0
read 4 bytes
[1] With N representing the number of bytes, the number of words for 16-bit bus width is: (N + 1) divided by 2.
[2] When accessing an 8-bit register in 16-bit mode, the upper byte is invalid.
[3] During the isochronous transfer in 16-bit mode, because N ≤ 1023, firmware must manage the upper byte.
[4] Validating an OUT endpoint buffer causes unpredictable behavior of the Peripheral Controller.
[5] Clearing an IN endpoint buffer causes unpredictable behavior of the Peripheral Controller.
[6] Reads a copy of the Status register, executing this command does not clear any status bits or interrupt bits.
15.1 Initialization commands
Initialization commands are used during the enumeration process of the USB network.
These commands are used to configure and enable embedded endpoints. They also
serve to set the USB assigned address of the Peripheral Controller and to perform a
device reset.
15.1.1 DcEndpointConfiguration register (R/W: 30h to 3Fh/20h to 2Fh)
This command is used to access the DcEndpointConfiguration register (ECR) of the
target endpoint. It defines the endpoint type (isochronous or bulk/interrupt), direction
(OUT/IN), buffer memory size and buffering scheme. It also enables the endpoint buffer
memory. The register bit allocation is shown in Table 109. A bus reset will disable all
endpoints.
The allocation of the buffer memory takes place only after all 16 endpoints have been
configured in sequence (from endpoint 0 OUT to endpoint 14). Although control endpoints
have fixed configurations, they must be included in the initialization sequence and must be
configured with their default values (see Table 14). Automatic buffer memory allocation
starts when endpoint 14 has been configured.
Remark: If any change is made to an endpoint configuration that affects the allocated
memory (size, enable/disable), the buffer memory contents of all endpoints becomes
invalid. Therefore, all valid data must be removed from enabled endpoints before changing
the configuration.
Code (Hex): 20 to 2F — write (control OUT, control IN, endpoints 1 to 14)
Code (Hex): 30 to 3F — read (control OUT, control IN, endpoints 1 to 14)
Transaction — write or read 1 byte (code or data)
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Table 109. DcEndpointConfiguration register: bit allocation
Bit
7
FIFOEN
0
6
EPDIR
0
5
DBLBUF
0
4
FFOISO
0
3
2
1
0
Symbol
Reset
Access
FFOSZ[3:0]
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 110. DcEndpointConfiguration register: bit description
Bit
7
Symbol
FIFOEN
EPDIR
Description
Logic 1 enables the FIFO buffer. Logic 0 disables the FIFO buffer.
6
This bit defines the endpoint direction (0 = OUT, 1 = IN); it also determines
the DMA transfer direction (0 = read, 1 = write).
5
4
DBLBUF
FFOISO
Logic 1 enables the double buffering.
Logic 1 indicates an isochronous endpoint. Logic 0 indicates a bulk or
interrupt endpoint.
3 to 0 FFOSZ[3:0] Selects the buffer memory size according to Table 15.
15.1.2 DcAddress register (R/W: B7h/B6h)
This command is used to set the USB assigned address in the DcAddress register and
enable the USB device. The DcAddress register bit allocation is shown in Table 111.
A USB bus reset sets the device address to 00h (internally) and enables the device. The
value of the DcAddress register (accessible by the microprocessor) is not altered by the
USB bus reset. In response to standard USB request Set Address, firmware must issue a
Write Device Address command, followed by sending an empty packet to the host. The
new device address is activated when the host acknowledges the empty packet.
Code (Hex): B6/B7 — write or read DcAddress register
Transaction — write or read 1 byte (code or data)
Table 111. DcAddress register: bit allocation
Bit
7
DEVEN
0
6
5
4
3
2
1
0
Symbol
Reset
Access
DEVADR[6:0]
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 112. DcAddress register: bit description
Bit
7
Symbol
Description
DEVEN
Logic 1 enables the device.
6 to 0
DEVADR[6:0]
This field specifies the USB device address.
15.1.3 DcMode register (R/W: B9h/B8h)
This command is used to access the DcMode register, which consists of 1 byte (bit
allocation: see Table 113). In 16-bit bus mode, the upper byte is ignored.
The DcMode register controls the DMA bus width, resume and suspend modes, interrupt
activity, and SoftConnect operation. It can be used to enable debug mode, in which all
errors and Not Acknowledge (NAK) conditions will generate an interrupt.
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Code (Hex): B8/B9 — write or read DcMode register
Transaction — write or read 1 byte (code or data)
Table 113. DcMode register: bit allocation
Bit
7
6
5
GOSUSP
0
4
reserved
0
3
INTENA
0[1]
2
DBGMOD
0[1]
1
reserved
0[1]
0
SOFTCT
0[1]
Symbol
Reset
Access
reserved
1[1]
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
[1] Unchanged by a bus reset.
Table 114. DcMode register: bit description
Bit
Symbol
Description
7 to 6
-
reserved
5
4
3
2
GOSUSP
-
Writing logic 1 followed by logic 0 will activate suspend mode.
reserved
INTENA
Logic 1 enables all interrupts. Bus reset value: unchanged.
DBGMOD Logic 1 enables debug mode, in which all NAKs and errors will generate an
interrupt. Logic 0 selects normal operation, in which interrupts are generated
on every ACK (bulk or interrupt endpoints) or after every data transfer
(isochronous endpoints). Bus reset value: unchanged.
1
0
-
reserved
SOFTCT
Logic 1 enables SoftConnect. This bit is ignored if EXTPUL = 1 in the
DcHardwareConfiguration register (see Table 115). Bus reset value:
unchanged.
Remark: In OTG mode, this bit is ignored. The LOC_CONN bit of the
OtgControl register controls the pull-up resistor on the OTG_DP1 pin.
15.1.4 DcHardwareConfiguration register (R/W: BBh/BAh)
This command is used to access the DcHardwareConfiguration register, which consists of
2 bytes. The first (lower) byte contains the device configuration and control values, the
second (upper) byte holds clock control bits and the clock division factor. The bit allocation
is given in Table 115. A bus reset will not change any of programmed bit values.
The DcHardwareConfiguration register controls the connection to the USB bus, clock
activity and power supply during the ‘suspend’ state, as well as output clock frequency,
DMA operating mode and pin configurations (polarity, signaling mode).
Code (Hex): BA/BB — write or read DcHardwareConfiguration register
Transaction — write or read 2 bytes (code or data)
Table 115. DcHardwareConfiguration register: bit allocation
Bit
15
14
EXTPUL
0
13
NOLAZY
1
12
CLKRUN
0
11
10
9
8
Symbol
Reset
Access
reserved
CKDIV[3:0]
-
-
0
0
1
1
R/W
R/W
R/W
R/W
R/W
R/W
R/W
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Bit
7
DAKOLY
0
6
DRQPOL
1
5
DAKPOL
0
4
3
WKUPCS
0
2
reserved
1
1
INTLVL
0
0
INTPOL
0
Symbol
Reset
Access
reserved
0
-
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 116. DcHardwareConfiguration register: bit description
Bit
15
14
Symbol
-
Description
reserved
EXTPUL
Logic 1 indicates that an external 1.5 kΩ pull-up resistor is used on
pin OTG_DP1 (in device mode) and that SoftConnect is not used. Bus
reset value: unchanged.
13
12
NOLAZY
CLKRUN
Logic 1 disables output on pin CLKOUT of the LazyClock frequency
(115 kHz ± 50 %) during the suspend state. Logic 0 causes pin CLKOUT
to switch to LazyClock output after approximately 2 ms delay, following the
setting of bit GOSUSP of the DcMode register. Bus reset value:
unchanged.
Logic 1 indicates that internal clocks are always running, even during the
‘suspend’ state. Logic 0 switches off the internal oscillator and PLL, when
they are not needed. During the ‘suspend’ state, this bit must be made
logic 0 to meet suspend current requirements. The clock is stopped after a
delay of approximately 2 ms, following the setting of bit GOSUSP of the
DcMode register. Bus reset value: unchanged.
11 to 8 CKDIV[3:0] This field specifies clock division factor N, which controls the clock
frequency on output CLKOUT pin. The output frequency in MHz is given
by 48 ⁄ (N + 1) . The clock frequency range is 3 MHz to 48 MHz (N = 0 to
15), with a reset value of 12 MHz (N = 3). The hardware design
guarantees no glitches during frequency change. Bus reset value:
unchanged.
7
6
5
DAKOLY
DRQPOL
DAKPOL
Logic 1 selects DACK-only DMA mode. Logic 0 selects 8237 compatible
DMA mode. Bus reset value: unchanged.
Selects the DREQ2 pin signal polarity (0 = active LOW; 1 = active HIGH).
Bus reset value: unchanged.
Selects the DACK2 pin signal polarity (0 = active LOW; 1 = active HIGH).
Bus reset value: unchanged.
4
3
-
reserved
WKUPCS
Logic 1 enables remote wake-up using a LOW level on input CS. Bus reset
value: unchanged.
2
1
-
reserved
INTLVL
Selects interrupt signaling mode on output (0 = level; 1 = pulsed). In
pulsed mode, an interrupt produces 166 ns pulse. Bus reset value:
unchanged.
0
INTPOL
Selects the INT2 signal polarity (0 = active LOW; 1 = active HIGH). Bus
reset value: unchanged.
15.1.5 DcInterruptEnable register (R/W: C3h/C2h)
This command is used to individually enable or disable interrupts from all endpoints, as
well as interrupts caused by events on the USB bus (SOF, EOT, suspend, resume, reset).
A bus reset will not change any of the programmed bit values.
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The command accesses the DcInterruptEnable register, which consists of 4 bytes. The bit
allocation is given in Table 117.
Code (Hex): C2/C3 — write or read DcInterruptEnable register
Transaction — write or read 4 bytes (code or data)
Table 117. DcInterruptEnable register: bit allocation
Bit
31
30
29
28
27
26
25
24
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
-
-
17
-
23
22
21
20
19
18
16
Symbol
Reset
Access
Bit
IEP14
IEP13
IEP12
0
IEP11
0
IEP10
0
IEP9
0
IEP8
0
IEP7
0
0
0
R/W
R/W
R/W
13
R/W
12
R/W
11
R/W
10
R/W
9
R/W
15
14
8
Symbol
Reset
Access
Bit
IEP6
IEP5
IEP4
0
IEP3
0
IEP2
0
IEP1
0
IEP0IN
0
IEP0OUT
0
0
0
R/W
0
R/W
R/W
R/W
5
R/W
4
R/W
3
R/W
2
R/W
1
7
6
SP_IEEOT
0
Symbol
Reset
Access
reserved
IEPSOF
0
IESOF
0
IEEOT
0
IESUSP
0
IERESM
0
IERST
0
-
-
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 118. DcInterruptEnable register: bit description
Bit
Symbol
Description
31 to 24
-
reserved; must write logic 0
23 to 10 IEP14 to IEP1 Logic 1 enables interrupts from the indicated endpoint. Logic 0
disables interrupts from the indicated endpoint.
9
IEP0IN
Logic 1 enables interrupts from the control IN endpoint. Logic 0
disables interrupts from the control IN endpoint.
8
IEP0OUT
Logic 1 enables interrupts from the control OUT endpoint. Logic 0
disables interrupts from the control OUT endpoint.
7
6
-
reserved
SP_IEEOT
Logic 1 enables interrupt on detecting a short packet. Logic 0
disables interrupt.
5
4
3
IEPSOF
IESOF
IEEOT
Logic 1 enables 1 ms interrupts on detecting pseudo SOF. Logic 0
disables interrupts.
Logic 1 enables interrupt on the SOF detection. Logic 0 disables
interrupt.
Logic 1 enables interrupt on the EOT detection. Logic 0 disables
interrupt.
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Table 118. DcInterruptEnable register: bit description …continued
Bit
Symbol
Description
2
IESUSP
Logic 1 enables interrupt on detecting a suspend state. Logic 0
disables interrupt.
1
0
IERESM
IERST
Logic 1 enables interrupt on detecting a resume state. Logic 0
disables interrupt.
Logic 1 enables interrupt on detecting a bus reset. Logic 0 disables
interrupt.
15.1.6 DcDMAConfiguration (R/W: F1h/F0h)
This command defines the DMA configuration of the Peripheral Controller, and enables or
disables DMA transfers. The command accesses the DcDMAConfiguration register, which
consists of two bytes. The bit allocation is given in Table 119. A bus reset will clear
bit DMAEN (DMA disabled), all other bits remain unchanged.
Code (Hex): F0/F1 — write or read DMA Configuration
Transaction — write or read 2 bytes (code or data)
Table 119. DcDMAConfiguration register: bit allocation
Bit
15
CNTREN
0[1]
14
SHORTP
0[1]
13
12
11
10
9
8
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
R/W
R/W
6
-
7
5
4
3
2
1
0
Symbol
Reset
Access
EPDIX[3:0]
DMAEN
0
reserved
BURSTL[1:0]
0[1]
0[1]
0[1]
0[1]
-
-
0[1]
0[1]
R/W
R/W
R/W
R/W
R/W
R/W
R/W
[1] Unchanged by a bus reset.
Table 120. DcDMAConfiguration register: bit description
Bit
Symbol
Description
15
CNTREN
Logic 1 enables the generation of an EOT condition, when the
DcDMACounter register reaches zero. Bus reset value: unchanged.
14
SHORTP
Logic 1 enables short or empty packet mode. When receiving (OUT
endpoint) a short or empty packet, an EOT condition is generated. When
transmitting (IN endpoint), this bit must be cleared. Bus reset value:
unchanged.
13 to 8
7 to 4
-
reserved
EPDIX[3:0]
Indicates the destination endpoint for DMA, see Table 17.
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Table 120. DcDMAConfiguration register: bit description …continued
Bit
Symbol
Description
3
DMAEN
Writing logic 1 enables DMA transfer, logic 0 forces the end of an ongoing
DMA transfer. Reading this bit indicates whether DMA is enabled or not
(0 = DMA stopped; 1 = DMA enabled). This bit is cleared by a bus reset.
2
-
reserved
1 to 0
BURSTL[1:0] Selects the DMA burst length:
00 — single-cycle mode (1 byte)
01 — burst mode (4 bytes)
10 — burst mode (8 bytes)
11 — burst mode (16 bytes)
Bus reset value: unchanged.
15.1.7 DcDMACounter register (R/W: F3h/F2h)
This command accesses the DcDMACounter register, which consists of two bytes. The bit
allocation is given in Table 121. Writing to the register sets the number of bytes for a DMA
transfer. Reading the register returns the number of remaining bytes in the current
transfer. A bus reset will not change programmed bit values.
The internal DMA counter is automatically reloaded from the DcDMACounter register. For
details, see Section 15.1.6.
Code (Hex): F2/F3 — write or read DcDMACounter register
Transaction — write or read 2 bytes (code or data)
Table 121. DcDMACounter register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
DMACR[15:8]
0
R/W
7
0
R/W
6
0
R/W
5
0
R/W
4
0
R/W
3
0
R/W
2
0
R/W
1
0
R/W
0
Symbol
Reset
Access
DMACR[7:0]
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Table 122. DcDMACounter register: bit description
Bit
Symbol
Description
This field indicates the number of bytes for a DMA transfer.
15 to 0
DMACR[15:0]
15.1.8 Reset device (F6h)
This command resets the Peripheral Controller in the same way as an external hardware
reset by using input RESET. All registers are initialized to their ‘reset’ values.
Code (Hex): F6 — reset the device
Transaction — none (code only)
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15.2 Data flow commands
Data flow commands are used to manage data transmission between USB endpoints and
the system microprocessor. Much of the data flow is initiated using an interrupt to the
microprocessor. Data flow commands are used to access endpoints and determine
whether the endpoint buffer memory contains valid data.
Remark: The IN buffer of an endpoint contains input data for the host. The OUT buffer
receives output data from the host.
15.2.1 Write or read endpoint buffer (R/W: 10h,12h to 1Fh/01h to 0Fh)
This command is used to access endpoint buffer memory to read/write. First, the buffer
pointer is reset to the start of the buffer. Following the command, a maximum of (N + 2)
bytes can be written or read, N represents the size of the endpoint buffer. For 16-bit
access, the maximum number of words is (M + 1), with M given as (N + 1) divided by 2.
After each read or write action, the buffer pointer is automatically incremented by two.
In Direct Memory Access (DMA), the first two bytes or the first word (the packet length) is
skipped: transfers start at the third byte or the second word of the endpoint buffer. When
reading, the Peripheral Controller can detect the last byte or word by using the EOP
condition. When writing to a bulk or interrupt endpoint, the endpoint buffer must be
completely filled before sending data to the host. Exception: when a DMA transfer is
stopped by an external EOT condition, the current buffer content (full or not) is sent to the
host.
Remark: Reading data after a Write Endpoint Buffer command or writing data after a
Read Endpoint Buffer command data will cause unpredictable behavior of the Peripheral
Controller.
Code (Hex): 01 to 0F — write (control IN, endpoints 1 to 14)
Code (Hex): 10, 12 to 1F — read (control OUT, endpoints 1 to 14)
Transaction — write or read maximum N + 2 bytes (isochronous endpoint: N ≤ 1023,
bulk/interrupt endpoint: N ≤ 32) (code or data)
The data in the endpoint buffer memory must be organized as shown in Table 123. An
example of endpoint buffer memory access is given in Table 124.
Table 123. Endpoint buffer memory organization
Word #
Description
0 (lower byte)
0 (upper byte)
1 (lower byte)
1 (upper byte)
…
packet length (lower byte)
packet length (upper byte)
data byte 1
data byte 2
…
M = (N + 1) / 2
data byte N
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Table 124. Example of endpoint buffer memory access
A0
Phase
Bus lines
D[7:0]
Word #
Description
HIGH
command
-
command code (00h to 1Fh)
D[15:8]
D[15:0]
D[15:0]
D[15:0]
…
-
ignored
LOW
LOW
LOW
…
data
data
data
…
0
1
2
…
packet length
data word 1 (data byte 2, data byte 1)
data word 2 (data byte 4, data byte 3)
…
Remark: There is no protection against writing or reading past a buffer’s boundary,
against writing into an OUT buffer or reading from an IN buffer. Any of these actions can
cause an incorrect operation. Data residing in an OUT buffer is only meaningful after a
successful transaction. Exception: during the DMA access of a double-buffered endpoint,
the buffer pointer automatically points to the secondary buffer after reaching the end of the
primary buffer.
15.2.2 Read endpoint status (R: 50h to 5Fh)
This command is used to read the status of an endpoint buffer memory. The command
accesses the DcEndpointStatus register, the bit allocation of which is shown in Table 125.
Reading the DcEndpointStatus register will clear the interrupt bit set for the corresponding
endpoint in the DcInterrupt register (see Table 141).
All bits of the DcEndpointStatus register are read-only. Bit EPSTAL is controlled by the
Stall or Unstall commands and by the reception of a set-up token (see Section 15.2.3).
Code (Hex): 50 to 5F — read (control OUT, control IN, endpoints 1 to 14)
Transaction — read 1 byte (code only)
Table 125. DcEndpointStatus register: bit allocation
Bit
7
6
5
4
3
2
1
0
Symbol
EPSTAL
EPFULL1
EPFULL0
DATA_PID
OVER
SETUPT
CPUBUF
reserved
WRITE
Reset
0
0
0
0
0
0
0
-
-
Access
R
R
R
R
R
R
R
Table 126. DcEndpointStatus register: bit description
Bit
Symbol
Description
7
EPSTAL
This bit indicates whether the endpoint is stalled or not (1 = stalled; 0 =
not stalled).
Set to logic 1 by a stall endpoint command, cleared to logic 0 by an
Unstall Endpoint command. The endpoint is automatically unstalled on
receiving a set-up token.
6
5
4
EPFULL1
EPFULL0
DATA_PID
Logic 1 indicates that the secondary endpoint buffer is full.
Logic 1 indicates that the primary endpoint buffer is full.
This bit indicates data PID of the next packet (0 = DATA PID; 1 = DATA1
PID).
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Table 126. DcEndpointStatus register: bit description …continued
Bit
Symbol
Description
3
OVERWRITE This bit is set by hardware. Logic 1 indicates that a new set-up packet has
overwritten the previous set-up information, before it was acknowledged
or before the endpoint was stalled. Once writing of the set-up data is
completed, a read back of this register clears this bit.
Firmware must check this bit before sending an acknowledge set-up
command or stalling the endpoint. On reading logic 1, firmware must stop
ongoing set-up actions and wait for a new set-up packet.
2
1
SETUPT
CPUBUF
Logic 1 indicates that the buffer contains a set-up packet.
This bit indicates which buffer is currently selected for the CPU access
(0 = primary buffer; 1 = secondary buffer).
0
-
reserved
15.2.3 Stall endpoint or unstall endpoint (40h to 4Fh/80h to 8Fh)
These commands are used to stall or unstall an endpoint. The commands modify the
content of the DcEndpointStatus register (see Table 125).
A stalled control endpoint is automatically unstalled when it receives a set-up token,
regardless of the packet content. If the endpoint must stay in its stalled state, the
microprocessor can re-stall it with the Stall Endpoint command.
When a stalled endpoint is unstalled (either by using the Unstall Endpoint command or by
receiving a set-up token), it is also re-initialized. This flushes the buffer: if it is an OUT
buffer, it waits for a DATA 0 PID; if it is an IN buffer, it writes a DATA 0 PID.
Code (Hex): 40 to 4F — stall (control OUT, control IN, endpoints 1 to 14)
Code (Hex): 80 to 8F — unstall (control OUT, control IN, endpoints 1 to 14)
Transaction — none (code only)
15.2.4 Validate endpoint buffer (61h to 6Fh)
This command signals the presence of valid data for transmission to the USB host. The
validation occurs by setting the Buffer Full flag of the selected IN endpoint. This indicates
that the data in the buffer is valid and can be sent to the host, when the next IN token is
received. For a double-buffered endpoint, this command switches the current buffer
memory for CPU access.
Remark: For special aspects of the control IN endpoint, see Section 12.3.6.
Code (Hex): 61 to 6F — validate endpoint buffer (control IN, endpoints 1 to 14)
Transaction — none (code only)
15.2.5 Clear endpoint buffer (70h, 72h to 7Fh)
This command unlocks and clears the buffer of the selected OUT endpoint, allowing the
reception of new packets. Reception of a complete packet causes the Buffer Full flag of an
OUT endpoint to be set. Any subsequent packets are refused by returning a NAK
condition, until the buffer is unlocked using this command. For a double-buffered endpoint,
this command switches the current buffer memory for CPU access.
Remark: For special aspects of the control OUT endpoint, see Section 12.3.6.
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Code (Hex): 70, 72 to 7F — clear endpoint buffer (control OUT, endpoints 1 to 14)
Transaction — none (code only)
15.2.6 DcEndpointStatusImage register (D0h to DFh)
This command is used to check the status of the selected endpoint buffer memory, without
clearing any status or interrupt bits. The command accesses the DcEndpointStatusImage
register, which contains a copy of the DcEndpointStatus register. The bit allocation of the
DcEndpointStatusImage register is shown in Table 127.
Code (Hex): D0 to DF — check status (control OUT, control IN, endpoints 1 to 14)
Transaction — write or read 1 byte (code or data)
Table 127. DcEndpointStatusImage register: bit allocation
Bit
7
6
5
4
3
2
1
0
Symbol
EPSTAL
EPFULL1
EPFULL0
DATA_PID
OVER
SETUPT
CPUBUF
reserved
WRITE
Reset
0
0
0
0
0
0
0
-
-
Access
R
R
R
R
R
R
R
Table 128. DcEndpointStatusImage register: bit description
Bit
Symbol
Description
7
EPSTAL
This bit indicates whether the endpoint is stalled or not (1 = stalled; 0 =
not stalled).
6
5
4
EPFULL1
EPFULL0
DATA_PID
Logic 1 indicates that the secondary endpoint buffer is full.
Logic 1 indicates that the primary endpoint buffer is full.
This bit indicates data PID of the next packet (0 = DATA0 PID; 1 =
DATA1 PID).
3
OVERWRITE
This bit is set by hardware. Logic 1 indicates that a new set-up packet
has overwritten the previous set-up information, before it was
acknowledged or before the endpoint was stalled. Once writing of the
set-up data is completed, a read back of this register clears this bit.
Firmware must check this bit before sending an acknowledge set-up
command or stalling the endpoint. On reading logic 1, firmware must
stop ongoing set-up actions and wait for a new set-up packet.
2
1
SETUPT
CPUBUF
Logic 1 indicates that the buffer contains a set-up packet.
This bit indicates which buffer is currently selected for CPU access (0 =
primary buffer; 1 = secondary buffer).
0
-
reserved
15.2.7 Acknowledge set up (F4h)
This command acknowledges to the host that a set-up packet is received. The arrival of a
set-up packet disables the Validate Buffer and Clear Buffer commands for the control IN
and OUT endpoints. The microprocessor must re-enable these commands by sending an
acknowledge set-up command, see Section 12.3.6.
Code (Hex): F4 — acknowledge set up
Transaction — none (code only)
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15.3 General commands
15.3.1 Read endpoint error code (R: A0h to AFh)
This command returns the status of the last transaction of the selected endpoint, as
stored in the DcErrorCode register. Each new transaction overwrites the previous status
information. The bit allocation of the DcErrorCode register is shown in Table 129.
Code (Hex): A0 to AF — read error code (control OUT, control IN, endpoints 1 to 14)
Transaction — read 1 byte (code or data)
Table 129. DcErrorCode register: bit allocation
Bit
7
6
5
4
3
2
1
0
RTOK
0
Symbol
Reset
Access
UNREAD
DATA01
reserved
ERROR[3:0]
0
0
-
-
0
0
0
0
R
R
R
R
R
R
R
Table 130. DcErrorCode register: bit description
Bit
Symbol
Description
7
UNREAD
Logic 1 indicates that a new event occurred before the previous status is
read.
6
DATA01
This bit indicates the PID type of the last successfully received or
transmitted packet (0 = DATA0 PID; 1 = DATA1 PID).
5
-
reserved
4 to 1 ERROR[3:0] Error code. For error description, see Table 131.
RTOK Logic 1 indicates that data was successfully received or transmitted.
0
Table 131. Transaction error codes
Error code
(Binary)
Description
0000
0001
0010
0011
no error
PID encoding error; bits 7 to 4 are not the inverse of bits 3 to 0
PID unknown; encoding is valid, but PID does not exist
unexpected packet; packet is not of the expected type (token, data or
acknowledge) or is a set-up token to a non-control endpoint
0100
0101
0110
0111
1000
1001
1010
1011
1100
1101
1110
1111
token CRC error
data CRC error
time-out error
babble error
unexpected end-of-packet
sent or received NAK (Not Acknowledge)
sent stall; a token was received, but the endpoint was stalled
overflow; the received packet was larger than the available buffer space
sent empty packet (ISO only)
bit stuffing error
sync error
wrong (unexpected) toggle bit in DATA PID; data was ignored
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15.3.2 Unlock Device (B0h)
This command unlocks the Peripheral Controller from write-protection mode after a
‘resume’. In the ‘suspend’ state, all registers and buffer memory are write-protected to
prevent data corruption by external devices during a ‘resume’. Also, the register access to
read is possible only after the ‘unlock device’ command is executed.
After waking up from the ‘suspend’ state, firmware must unlock registers and buffer
memory by using this command, by writing the unlock code (AA37h) into the DcLock
register (8-bit bus: lower byte first). The bit allocation of the DcLock register is given in
Table 132.
Code (Hex): B0 — unlock the device
Transaction — write 2 bytes (unlock code) (code or data)
Table 132. DcLock register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
UNLOCK[15:8] = AAh
1
W
7
0
W
6
1
W
5
0
W
4
1
W
3
0
W
2
1
W
1
0
W
0
Symbol
Reset
Access
UNLOCK[7:0] = 37h
0
0
1
1
0
1
1
1
W
W
W
W
W
W
W
W
Table 133. DcLock register: bit description
Bit Symbol Description
15 to 0 UNLOCK[15:0] Sending data AA37h unlocks internal registers and buffer memory to
write, following a resume.
15.3.3 DcScratch register (R/W: B3h/B2h)
This command accesses the 16-bit DcScratch register, which can be used by firmware to
save and restore information. For example, the device status before powering down in the
‘suspend’ state.
The register bit allocation is given in Table 134.
Code (Hex): B2/B3 — write or read DcScratch register
Transaction — write or read 2 bytes (code or data)
Table 134. DcScratch Information register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
reserved
SFIR[12:8]
-
-
-
-
-
-
0
R/W
4
0
R/W
3
0
R/W
2
0
R/W
1
0
R/W
0
7
6
5
Symbol
Reset
Access
SFIR[7:0]
0
0
0
0
0
0
0
0
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
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Table 135. DcScratch Information register: bit description
Bit
Symbol
-
Description
15 to 13
12 to 0
reserved; must be logic 0
scratch information register
SFIR[12:0]
15.3.4 DcFrameNumber register (R: B4h)
This command returns the frame number of the last successfully received SOF. It is
followed by reading one word from the DcFrameNumber register, containing the frame
number. The DcFrameNumber register is shown in Table 136.
Remark: After a bus reset, the value of the DcFrameNumber register is undefined.
Code (Hex): B4 — read frame number
Transaction — read 1 byte or 2 bytes (code or data)
Table 136. DcFrameNumber register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
Reset[1]
Access
Bit
reserved
SOFR[9:8]
-
-
-
-
-
-
-
-
-
-
0
R
2
0
R
1
0
R
0
7
6
5
4
3
Symbol
Reset[1]
Access
SOFR[7:0]
0
0
0
0
0
0
0
0
R
R
R
R
R
R
R
R
[1] Reset value undefined after a bus reset.
Table 137. DcFrameNumber register: bit description
Bit
Symbol
-
Description
reserved
15 to 11
10 to 0
SOFR[9:0]
frame number
Table 138. Example of the DcFrameNumber register access
A0
Phase
Bus lines
D[15:8]
D[7:0]
Word#
Description
HIGH
command
-
ignored
-
command code (B4h)
frame number
LOW
data
D[15:0]
0
15.3.5 DcChipID (R: B5h)
This command reads the chip identification code and hardware version number. The
firmware must check this information to determine supported functions and features. This
command accesses the DcChipID register, which is shown in Table 139.
Code (Hex): B5 — read chip ID
Transaction — read 2 bytes (code or data)
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Table 139. DcChipID register: bit allocation
Bit
15
14
13
12
11
10
9
8
Symbol
Reset
Access
Bit
CHIPIDH[7:0]
0
R
7
0
R
6
1
R
5
1
R
4
0
R
3
1
R
2
1
R
1
0
R
0
Symbol
Reset
Access
CHIPIDL[7:0]
0
0
1
1
0
0
0
0
R
R
R
R
R
R
R
R
Table 140. DcChipID register: bit description
Bit
Symbol
Description
15 to 8
7 to 0
CHIPIDH[7:0] chip ID code (36h)
CHIPIDL[7:0] silicon version (30h, with 30 representing the BCD encoded version
number)
15.3.6 DcInterrupt register (R: C0h)
This command indicates the sources of interrupts as stored in the 4 bytes DcInterrupt
register. Each individual endpoint has its own interrupt bit. The bit allocation of the
DcInterrupt register is shown in Table 141. Bit BUSTATUS is used to verify the current bus
status in the interrupt service routine. Interrupts are enabled using the DcInterruptEnable
register, see Section 15.1.5.
While reading the DcInterrupt register, it is recommended that both 2 bytes words are
read completely.
Code (Hex): C0 — read DcInterrupt register
Transaction — read 4 bytes (code or data)
Table 141. DcInterrupt register: bit allocation
Bit
31
30
29
28
27
26
25
24
Symbol
Reset
Access
Bit
reserved
-
-
-
-
-
-
-
-
-
-
-
-
-
21
EP12
0
-
-
-
23
22
20
EP11
0
19
EP10
0
18
17
16
Symbol
Reset
Access
Bit
EP14
EP13
EP9
EP8
EP7
0
0
0
0
0
R
R
R
R
R
R
R
R
15
14
13
EP4
0
12
EP3
0
11
EP2
0
10
9
8
Symbol
Reset
Access
Bit
EP6
EP5
EP1
EP0IN
EP0OUT
0
0
0
0
0
R
R
R
R
R
R
R
R
7
6
5
4
3
2
1
0
Symbol
Reset
Access
BUSTATUS
SP_EOT
PSOF
0
SOF
0
EOT
0
SUSPND
RESUME
RESET
0
0
0
0
0
R
R
R
R
R
R
R
R
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ISP1362
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Single-chip USB OTG Controller
Table 142. DcInterrupt register: bit description
Bit
Symbol
Description
31 to 24
-
reserved
23 to 10
EP14 to EP1 Logic 1 indicates the interrupt source(s): endpoints 14 to 1.
9
8
7
6
EP0IN
Logic 1 indicates the interrupt source: control IN endpoint.
Logic 1 indicates the interrupt source: control OUT endpoint.
Monitors the current USB bus status (0 = awake, 1 = suspend).
EP0OUT
BUSTATUS
SP_EOT
Logic 1 indicates that an EOT interrupt has occurred for a short
period.
5
PSOF
Logic 1 indicates that an interrupt is issued every 1 ms because of
the pseudo SOF; after three missed SOFs, the ‘suspend’ state is
entered.
4
3
SOF
EOT
Logic 1 indicates that an SOF condition was detected.
Logic 1 indicates that an internal EOT condition was generated by
the DMA Counter reaching zero.
2
SUSPND
Logic 1 indicates that an ‘awake’ to ‘suspend’ change of state was
detected on the USB bus.
1
0
RESUME
RESET
Logic 1 indicates that a ‘resume’ state was detected.
Logic 1 indicates that a bus reset condition was detected.
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Product data sheet
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ISP1362
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Single-chip USB OTG Controller
16. Limiting values
Table 143. Limiting values
In accordance with the Absolute Maximum Rating System (IEC 60134).
Symbol Parameter
Conditions
Min
−0.5
−0.5
-
Max
+4.6
+6.0
100
Unit
V
VCC
VI
supply voltage
input voltage
V
Ilu
latch-up current
VI < 0 V or VI > VCC
mA
V
[1]
Vesd
Tstg
electrostatic discharge voltage
storage temperature
ILI < 1 µA
−2000
−60
+2000
+150
°C
[1] Equivalent to discharging a 100 pF capacitor through a 1.5 kΩ resistor (Human Body Model).
17. Recommended operating conditions
Table 144. Recommended operating conditions
DP represents OTG_DP1 and H_DP2, and DM represents OTG_DM1 and H_DM2.
Symbol Parameter
Conditions
Min
3.0
0
Typ
3.3
3.3
5.0
3.3
Max
Unit
V
VCC
VI
supply voltage
input voltage
3.6
3.6
5.5
3.6
[1]
[1]
3.3 V tolerant pins
5 V tolerant pins
V
0
V
on pin X1 when external
clock is used
3.0
V
VIA(I/O)
VO(od)
input voltage on analog I/O lines
open-drain output pull-up voltage
pins DP and DM
5 V tolerant pins
non 5 V tolerant pins
0
-
-
-
-
3.6
5.5
3.6
+85
V
0
V
0
V
Tamb
ambient temperature
−40
°C
[1] Input voltage on digital I/O lines.
ISP1362_5
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Product data sheet
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ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
18. Static characteristics
Table 145. Static characteristics: supply pins
VCC = 3.3 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.
Symbol
Parameter
operating supply current for Peripheral Controller
the Host Controller suspended
Conditions
Min
Typ
Max
Unit
ICC(HC)
-
33
-
mA
ICC(DC)
operating supply current for Host Controller suspended
the Peripheral Controller
-
-
-
20
50
60
-
-
-
mA
mA
µA
ICC(HC+DC) operating supply current for
the host and the device
[1]
ICC(susp)
suspend supply current
Host Controller and Peripheral
Controller are suspended
[1] The power consumption on the charge pump is not included.
Table 146. Static characteristics: digital pins
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.
Symbol
Input levels
VIL
Parameter
Conditions
Min
Typ
Max
Unit
LOW-level input voltage
HIGH-level input voltage
-
-
-
0.8
-
V
V
VIH
2.0
Schmitt-trigger inputs
Vth(LH)
positive-going threshold voltage
1.4
0.9
0.4
-
-
-
1.9
1.5
0.7
V
V
V
Vth(HL)
negative-going threshold voltage
hysteresis voltage
Vhys
Output levels
VOL
LOW-level output voltage
HIGH-level output voltage
IOL = 4 mA
IOL = 20 µA
IOH = 4 mA
IOH = 20 µA
-
-
-
-
-
0.4
0.1
-
V
V
V
V
-
[1]
[2]
VOH
2.4
V
CC − 0.1 V
-
Leakage current
ILI
input leakage current
pin capacitance
−5
-
-
+5
5
µA
CIN
pin to GND
-
pF
Open-drain outputs
IOZ
off-state output current
−5
-
+5
µA
[1] Not applicable for open-drain outputs.
[2] These values are applicable to transistor inputs. The value will be different if internal pull-up or pull-down resistors are used.
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Product data sheet
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ISP1362
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Single-chip USB OTG Controller
Table 147. Static characteristics: analog I/O pins (D+, D−)
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.[1]
Symbol
Input levels
VDI
Parameter
Conditions
Min
Typ
Max
Unit
differential input sensitivity
|VI(D+) − VI(D−)
|
0.2
0.8
-
-
-
V
V
VCM
differential common mode
voltage
includes VDI range
2.5
VIL
LOW-level input voltage
HIGH-level input voltage
-
-
-
0.8
-
V
V
VIH
2.0
Output levels
VOL
VOH
LOW-level output voltage
HIGH-level output voltage
RL = 1.5 kΩ to +3.6 V
RL = 15 kΩ to GND
-
-
-
0.3
3.6
V
V
2.8
Leakage current
ILZ
off-state leakage current
−10
-
-
+10
10
µA
Capacitance
CIN
transceiver capacitance
pull-down resistance on
pin to GND
-
pF
Resistance
Rpd(OTG)
enable internal
14.25
10
-
-
24.8
20
kΩ
kΩ
pins OTG_DP1 and OTG_DM1 resistors
Rpd(H)
pull-down resistance on
pins H_DP2 and H_DM2
enable internal
resistors
Rpu(OTG)
pull-up resistance on
OTG_DP1
bus idle
900
1425
29
-
-
-
-
1575
3090
44
Ω
bus driven
steady-state drive
Ω
[2]
[3]
ZDRV
driver output impedance
input impedance
Ω
ZINP
10
-
MΩ
Termination
VTERM
termination voltage
for upstream port pull
3.0
-
3.6
V
up (RPU
)
[1] DP represents OTG_DP1 and H_DP2, and DM represents OTG_DM1 and H_DM2. D+ is the USB positive data line and D− is the USB
negative data line.
[2] Includes external resistors of 18 Ω ± 10 % on H_DP2 and H_DM2, and 27 Ω ± 10 % on OTG_DP1 and OTG_DM1.
[3] In suspend mode, the minimum voltage is 2.7 V.
Table 148. Static characteristics: charge pump
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; CLOAD = 2 µF; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
VBUS
regulated VBUS voltage
ILOAD = 8 mA from
-
5
5.25
V
V
BUS(OTG); see Figure 29
external capacitor of 27 nF;
CC = 3.0 V to 3.6 V
ILOAD
maximum load current
-
-
-
-
-
-
8
mA
mA
mA
V
external capacitor of 82 nF;
VCC = 3.0 V to 3.3 V
14
20
external capacitor of 82 nF;
VCC = 3.3 V to 3.6 V
CLOAD
output capacitance
1
-
-
-
6.5
0.2
µF
VBUS(LEAK)
VBUS(OTG) leakage voltage
VBUS(OTG) not driven
V
ISP1362_5
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Product data sheet
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ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
Table 148. Static characteristics: charge pump …continued
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; CLOAD = 2 µF; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
ICC(cp)(susp)
suspend supply current for
charge pump
GlobalPowerDown bit of the
HcHardwareConfiguration
register is logic 0
-
-
45
µA
GlobalPowerDown bit of the
HcHardwareConfiguration
register is logic 1
-
-
15
µA
ICC(cp)
operating supply current in
charge pump mode
ATX is idle
ILOAD = 8 mA
ILOAD = 0 mA
-
-
20
mA
µA
V
-
-
300
Vth(VBUS_VLD)
Vth(SESS_END)
VBUS valid threshold
4.4
-
-
VBUS session end threshold
0.2
-
0.8
V
Vhys(SESS_END) VBUS session end hysteresis
Vth(ASESS_VLD) VBUS A valid threshold
Vhys(ASESS_VLD) VBUS A valid hysteresis
Vth(BSESS_VLD) VBUS B valid threshold
Vhys(BSESS_VLD) VBUS B valid hysteresis
-
150
-
-
mV
V
0.8
2
-
-
200
-
mV
V
2
-
4
-
200
75
mV
%
E
efficiency when loaded
ILOAD = 8 mA; VIN = 3 V;
see Figure 28
-
-
IVBUS(leak)
RVBUS(PU)
RVBUS(PD)
RVBUS(IDLE)
leakage current from VBUS
VBUS pull-up resistance
VBUS pull-down resistance
-
15
-
-
µA
Ω
pull to VCC when enabled
pull to GND when enabled
281
656
40
-
-
-
Ω
VBUS idle impedance for the
A-device
when ID = LOW and
DRV_VBUS = 0
-
100
kΩ
RVBUS(ACTIVE)
VBUS active pull-down
impedance
when ID = HIGH and
DRV_VBUS =1
-
350
-
kΩ
001aaf829
100
E
efficiency
(%)
V
= 3.0 V
3.3 V
3.6 V
CC
80
60
40
20
0
0
5
10
15
20
25
I
(mA)
LOAD
82 nF charge pump capacitor.
Fig 28. Efficiency as a function of load current
ISP1362_5
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Product data sheet
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ISP1362
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Single-chip USB OTG Controller
001aaf830
5.2
V
= 3.6 V
3.3 V
CC
V
BUS
(V)
3.0 V
5.0
4.8
4.6
0
5
10
15
20
25
I
(mA)
LOAD
82 nF charge pump capacitor.
Fig 29. Output voltage as a function of load current
ISP1362_5
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ISP1362
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Single-chip USB OTG Controller
19. Dynamic characteristics
Table 149. Dynamic characteristics
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.
Symbol Parameter
Reset
Conditions
Min
Typ
Max
Unit
tW(RESET) pulse width on input RESET crystal oscillator running
crystal oscillator stopped
10
-
-
-
-
-
ms
ms
[1]
[2]
Crystal oscillator
fxtal
crystal frequency
series resistance
load capacitance
-
-
-
12
-
-
MHz
Ω
RS
100
-
CLOAD
CX1, CX2 = 22 pF
12
pF
External clock input
J
external clock jitter
-
-
500
55
3
ps
%
tDUTY
tCR
tCF
clock duty cycle
rise time
45
-
50
-
ns
ns
fall time
-
-
3
[1] Dependent on the crystal oscillator startup time.
[2] Tolerance of the clock frequency is ±50 ppm.
Table 150. Dynamic characteristics: analog I/O lines (D+, D−)
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; CL = 50 pF; RPU = 1.5 kΩ ± 5 % on DP to VTERM; unless otherwise
specified.[1]
Symbol Parameter
Driver characteristics
Conditions
Min
Typ
Max
Unit
tFR
rise time
CL = 50 pF; 10 % to
4
-
-
-
-
20
ns
ns
%
V
90 % of |VOH − VOL
CL = 50 pF; 90 % to
10 % of |VOH − VOL
(tFR/tFF
|
tFF
fall time
4
20
|
[2]
FRFM
VCRS
differential rise time/fall time
matching
)
90
1.3
111.11
2.0
[2][3]
output signal crossover voltage
[1] DP represents OTG_DP1 and H_DP2, and DM represents OTG_DM1 and H_DM2. Test circuit.
[2] Excluding the first transition from the idle state.
[3] Characterized only, not tested. Limits guaranteed by design.
Table 151. Dynamic characteristics: charge pump
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; CLOAD = 2 µF; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Driver characteristics
tSTART-UP
rise time to VBUS = 4.4 V
clock period
ILOAD = 8 mA; CLOAD
10 µF
=
-
-
100
ms
tCOMP_CLK
1.5
-
-
3
µs
µs
tVBUS(VALID_dly) minimum time VBUS(VALID)
error
100
200
ISP1362_5
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
129 of 152
ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
Table 151. Dynamic characteristics: charge pump …continued
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; CLOAD = 2 µF; unless otherwise specified.
Symbol
Parameter
Conditions
Min
10
50
-
Typ
Max
30
-
Unit
ms
tVBUS(PULSE)
VBUS pulsing time
-
-
-
tVBUS(VALID_dly) VBUS pull-down time
ms
VRIPPLE
output ripple with constant
load
ILOAD = 8 mA
50
mV
19.1 Programmed I/O timing
• If you are accessing only the Host Controller, then the Host Controller programmed
I/O timing applies.
• If you are accessing only the Peripheral Controller, then the Peripheral Controller
programmed I/O timing applies.
• If you are accessing both the Host Controller and the Peripheral Controller, then the
Peripheral Controller programmed I/O timing applies.
19.1.1 Host Controller programmed I/O timing
Table 152. Dynamic characteristics: Host Controller programmed interface timing
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.
Symbol Parameter
tAS address set-up time before CS
tAH address hold time after WR
Conditions
Min
5
Typ
Max
Unit
ns
-
-
-
-
2
ns
Read timing
tSHSL_R first RD/WR after command (A0 = HIGH)
tSHSL_B first RD/WR after command (A0 = HIGH)
register access
buffer access
300
462
0
-
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
ns
ns
ns
-
tSLRL
tRHSH
tRL
CS LOW to RD LOW
RD HIGH to CS HIGH
RD LOW pulse width
RD HIGH to next RD LOW
RD cycle
-
0
-
33
110
143
-
-
tRHRL
TRC
tRHDZ
tRLDV
-
-
RD data hold time
3
22
RD LOW to data valid
-
Write timing
tWL
WR LOW pulse width
26
110
136
0
-
-
-
-
-
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
ns
tWHWL
TWC
WR HIGH to next WR LOW
WR cycle
tSLWL
tWHSH
tWDSU
tWDH
CS LOW to WR LOW
WR HIGH to CS HIGH
WR data set-up time
WR data hold time
0
3
4
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Product data sheet
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ISP1362
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Single-chip USB OTG Controller
CS
t
SLWL
t
SHSL
t
SLRL
t
RLRH
t
t
WHSH
RHSH
A0
t
RHRL
T
RC
RD
t
RLDV
t
RHDZ
[
]
D 15:0
data
valid
data
valid
WHWL
data
valid
data
valid
t
AS
t
t
AH
t
T
WC
WL
WR
t
t
WDSU
WDH
data
valid
data
valid
data
valid
data
valid
data
valid
[
]
D 15:0
mgt969
Fig 30. Host Controller programmed interface timing
19.1.2 Peripheral Controller programmed I/O timing
Table 153. Dynamic characteristics: Peripheral Controller programmed interface timing
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Read timing (see Figure 31)
tRHAX
tAVRL
tSHDZ
address hold time after RD HIGH
0
0
-
-
-
-
-
ns
ns
ns
address set-up time before RD LOW
-
data outputs high-impedance time after CS
HIGH
3
tRHSH
tRLRH
tRLDV
tSHRL
chip deselect time after RD HIGH
RD pulse width
0
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
25
-
data valid time after RD LOW
CS HIGH until next ISP1362 RD
22
-
120
180
tSHRL + tRLRH + tRHSH read cycle time
-
Write timing (see Figure 32)
tWHAX
tAVWL
tSHWL
address hold time after WR HIGH
1
-
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
address set-up time before WR LOW
CS HIGH until next ISP1362 WR
0
120
180
22
[1]
tSHWL + tWLWH + tWHSH write cycle time
tWLWH
WR pulse width
ISP1362_5
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Product data sheet
Rev. 05 — 8 May 2007
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ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
Table 153. Dynamic characteristics: Peripheral Controller programmed interface timing …continued
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.
Symbol
tWHSH
tDVWH
Parameter
Conditions
Min
0
Typ
Max
Unit
ns
chip deselect time after WR HIGH
data set-up time before WR HIGH
data hold time after WR HIGH
-
-
-
-
-
-
5
ns
tWHDZ
3
ns
[1] In the command to data phase, the minimum value of the write command to the read data or write data cycle time must be 205 ns.
t
RHAX
A0
t
AVRL
t
SHDZ
CS/DACK2(2)
(1)
t
t
SHRL
RLRH
RD
t
RHSH
t
RLDV
D[15:0]
004aaa105
(1) For tSHRL both CS and RD must be de-asserted.
(2) Programmable polarity: shown as active LOW.
Fig 31. Peripheral Controller programmed interface read timing (I/O and 8237 compatible DMA)
ISP1362_5
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Single-chip USB OTG Controller
t
WHAX
A0
t
AVWL
CS/DACK2(2)
t
WLWH
(1)
t
SHWL
t
WHSH
WR
t
t
DVWH
WHDZ
D[15:0]
004aaa106
(1) For tSHWL, both CS and WR must be de-asserted.
(2) Programmable polarity: shown as active LOW.
Fig 32. Peripheral Controller programmed interface write timing (I/O and 8237 compatible DMA)
19.2 DMA timing
19.2.1 Host Controller single-cycle DMA timing
Table 154. Dynamic characteristics: Host Controller single-cycle DMA timing
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
Read/write timing
tRL
RD pulse width
33
30
0
-
-
-
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
tRLDV
tRHDZ
tWSU
tWHD
tAHRH
tALRL
TDC
read process data set-up time
read process data hold time
write process data set-up time
write process data hold time
DACK1 HIGH to DREQ1 HIGH
DACK1 LOW to DREQ1 LOW
DREQ1 cycle
-
-
5
-
0
-
72
-
-
21
-
[1]
tSHAH
tRHAL
tDS
RD/WR HIGH to DACK1 HIGH
DREQ1 HIGH to DACK1 LOW
DREQ1 pulse spacing
0
-
0
-
146
-
[1] tRHAL + tDS + tALRL
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ISP1362
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Single-chip USB OTG Controller
T
DC
DREQ1
DACK1
t
t
DS
t
ALRL
SHAH
t
RHAL
t
AHRH
t
t
RHDZ
RLDV
[
]
]
data
valid
D 15:0
(read)
[
D 15:0
data
valid
(write)
t
WSU
RD or WR
004aaa107
t
WHD
Fig 33. Host Controller single-cycle DMA timing
19.2.2 Host Controller burst mode DMA timing
Table 155. Dynamic characteristics: Host Controller burst mode DMA timing
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.
Symbol Parameter
Conditions
Min
Typ
Max
Unit
Read/write timing (for 4-cycle and 8-cycle burst mode)
tRL
RD/WR LOW pulse width
RD/WR HIGH to next RD/WR LOW
RD/WR cycle
42
60
102
22
0
-
-
-
-
-
-
-
-
-
-
-
-
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
tRHRL
TRC
-
-
tSLRL
tSHAH
tRHAL
TDC
RD/WR LOW to DREQ1 LOW
RD/WR HIGH to DACK1 HIGH
DREQ1 HIGH to DACK1 LOW
DREQ1 cycle
64
-
0
[1]
-
-
-
-
-
tDS(read) DREQ1 pulse spacing (read)
4-cycle burst mode
8-cycle burst mode
4-cycle burst mode
8-cycle burst mode
105
150
72
tDS(write) DREQ1 pulse spacing (write)
167
[1] tSLAL + (4 or 8)tRC + tDS
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t
DS
DREQ1
t
RHSH
t
RHAL
t
SLRL
DACK1
t
t
SHAH
RHRL
RD or WR
004aaa108
T
RC
t
RLRH
Fig 34. Host Controller burst mode DMA timing
19.2.3 Peripheral Controller single-cycle DMA timing (8237 mode)
Table 156. Dynamic characteristics: Peripheral Controller single-cycle DMA timing (8237 mode)
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.
Symbol
Parameter
Conditions
Min
-
Typ
Max
40
-
Unit
ns
tASRP
DREQ2 off after DACK2 on
-
-
Tcy(DREQ2) cycle time signal DREQ2
180
ns
T
RC
t
ASRP
DREQ2
DACK2(1)
004aaa111
(1) Programmable polarity: shown as active LOW.
Fig 35. Peripheral Controller single-cycle DMA timing (8237 mode)
19.2.4 Peripheral Controller single-cycle DMA read timing in DACK-only mode
Table 157. Dynamic characteristics: Peripheral Controller single-cycle DMA read timing in DACK-only mode
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.
Symbol
tASRP
Parameter
Conditions
Min
Typ
Max
40
-
Unit
ns
DREQ off after DACK on
DACK pulse width
-
-
-
-
-
-
tASAP
25
ns
tASAP + tAPRS DREQ on after DACK off
180
-
ns
tASDV
tAPDZ
data valid after DACK on
data hold after DACK off
-
-
22
3
ns
ns
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t
t
APRS
ASRP
DREQ2
t
ASAP
DACK2(1)
t
t
APDZ
ASDV
DATA
004aaa112
(1) Programmable polarity: shown as active LOW.
Fig 36. Peripheral Controller single-cycle DMA read timing in DACK-only mode
19.2.5 Peripheral Controller single-cycle DMA write timing in DACK-only mode
Table 158. Dynamic characteristics: Peripheral Controller single-cycle DMA write timing in DACK-only mode
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.
Symbol
tASRP
Parameter
Conditions
Min
Typ
Max
40
-
Unit
ns
DREQ2 off after DACK2 on
DACK2 pulse width
-
-
-
-
-
-
tASAP
25
ns
tASAP + tAPRS DREQ2 on after DACK2 off
180
-
ns
tASDV
tAPDZ
data valid after DACK2 on
data hold after DACK2 off
-
-
22
3
ns
ns
t
ASAP
t
t
APRS
ASRP
DREQ2
t
t
ASDV
APDZ
(1)
DACK2
DATA
004aaa113
(1) Programmable polarity: shown as active LOW.
Fig 37. Peripheral Controller single-cycle DMA write timing in DACK-only mode
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19.2.6 Peripheral Controller burst mode DMA timing
Table 159. Dynamic characteristics: Peripheral Controller burst mode DMA timing
VCC = 3.0 V to 3.6 V; GND = 0 V; Tamb = −40 °C to +85 °C; unless otherwise specified.
Symbol
tRSIH
tILRP
Parameter
Conditions
Min
22
-
Typ
Max
Unit
ns
input RD/WR HIGH after DREQ on
DREQ off after input RD/WR LOW
DACK off after input RD/WR HIGH
-
-
-
-
-
-
ns
tIHAP
0
60
-
ns
tIHIL
DMA burst repeat interval (input
RD/WR HIGH to LOW)
tRL or tWL is 30 ns (min)
160
ns
t
t
ILRP
RSIH
DREQ2
(1)
t
IHAP
DACK2
t
IHIL
RD or WR
004aaa115
(1) Programmable polarity: shown as active LOW.
Fig 38. Peripheral Controller burst mode DMA timing
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Single-chip USB OTG Controller
20. Package outline
LQFP64: plastic low profile quad flat package; 64 leads; body 10 x 10 x 1.4 mm
SOT314-2
y
X
A
48
33
Z
49
32
E
e
H
A
E
2
E
A
(A )
3
A
1
w M
p
θ
b
L
p
pin 1 index
L
64
17
detail X
1
16
Z
v
M
A
D
e
w M
b
p
D
B
H
v
M
B
D
0
2.5
5 mm
scale
DIMENSIONS (mm are the original dimensions)
A
(1)
(1)
(1)
(1)
UNIT
A
A
A
b
c
D
E
e
H
H
L
L
v
w
y
Z
Z
E
θ
1
2
3
p
D
E
p
D
max.
7o
0o
0.20 1.45
0.05 1.35
0.27 0.18 10.1 10.1
0.17 0.12 9.9 9.9
12.15 12.15
11.85 11.85
0.75
0.45
1.45 1.45
1.05 1.05
1.6
mm
0.25
0.5
1
0.2 0.12 0.1
Note
1. Plastic or metal protrusions of 0.25 mm maximum per side are not included.
REFERENCES
OUTLINE
EUROPEAN
PROJECTION
ISSUE DATE
VERSION
IEC
JEDEC
JEITA
00-01-19
03-02-25
SOT314-2
136E10
MS-026
Fig 39. Package outline SOT314-2 (LQFP64)
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ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
TFBGA64: plastic thin fine-pitch ball grid array package; 64 balls; body 6 x 6 x 0.8 mm
SOT543-1
D
A
B
ball A1
index area
A
2
A
E
A
1
detail X
C
e
1
y
y
e
1/2 e
v M
b
C
C
A
B
C
1
w M
K
J
H
G
F
e
e
2
E
D
C
B
A
1/2 e
ball A1
index area
1
2
3
4
5
6
7
8
9 10
X
0
2.5
scale
5 mm
DIMENSIONS (mm are the original dimensions)
A
UNIT
A
A
b
e
y
D
E
e
e
v
w
y
1
2
1
2
1
max.
0.25 0.85 0.35
0.15 0.75 0.25
6.1
5.9
6.1
5.9
mm
1.1
0.08
0.5
4.5
4.5
0.15 0.05
0.1
REFERENCES
JEDEC JEITA
OUTLINE
VERSION
EUROPEAN
PROJECTION
ISSUE DATE
IEC
00-11-22
02-04-09
SOT543-1
- - -
MO-195
- - -
Fig 40. Package outline SOT543-1 (TFBGA64)
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21. Soldering
This text provides a very brief insight into a complex technology. A more in-depth account
of soldering ICs can be found in Application Note AN10365 “Surface mount reflow
soldering description”.
21.1 Introduction to soldering
Soldering is one of the most common methods through which packages are attached to
Printed Circuit Boards (PCBs), to form electrical circuits. The soldered joint provides both
the mechanical and the electrical connection. There is no single soldering method that is
ideal for all IC packages. Wave soldering is often preferred when through-hole and
Surface Mount Devices (SMDs) are mixed on one printed wiring board; however, it is not
suitable for fine pitch SMDs. Reflow soldering is ideal for the small pitches and high
densities that come with increased miniaturization.
21.2 Wave and reflow soldering
Wave soldering is a joining technology in which the joints are made by solder coming from
a standing wave of liquid solder. The wave soldering process is suitable for the following:
• Through-hole components
• Leaded or leadless SMDs, which are glued to the surface of the printed circuit board
Not all SMDs can be wave soldered. Packages with solder balls, and some leadless
packages which have solder lands underneath the body, cannot be wave soldered. Also,
leaded SMDs with leads having a pitch smaller than ~0.6 mm cannot be wave soldered,
due to an increased probability of bridging.
The reflow soldering process involves applying solder paste to a board, followed by
component placement and exposure to a temperature profile. Leaded packages,
packages with solder balls, and leadless packages are all reflow solderable.
Key characteristics in both wave and reflow soldering are:
• Board specifications, including the board finish, solder masks and vias
• Package footprints, including solder thieves and orientation
• The moisture sensitivity level of the packages
• Package placement
• Inspection and repair
• Lead-free soldering versus PbSn soldering
21.3 Wave soldering
Key characteristics in wave soldering are:
• Process issues, such as application of adhesive and flux, clinching of leads, board
transport, the solder wave parameters, and the time during which components are
exposed to the wave
• Solder bath specifications, including temperature and impurities
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Single-chip USB OTG Controller
21.4 Reflow soldering
Key characteristics in reflow soldering are:
• Lead-free versus SnPb soldering; note that a lead-free reflow process usually leads to
higher minimum peak temperatures (see Figure 41) than a PbSn process, thus
reducing the process window
• Solder paste printing issues including smearing, release, and adjusting the process
window for a mix of large and small components on one board
• Reflow temperature profile; this profile includes preheat, reflow (in which the board is
heated to the peak temperature) and cooling down. It is imperative that the peak
temperature is high enough for the solder to make reliable solder joints (a solder paste
characteristic). In addition, the peak temperature must be low enough that the
packages and/or boards are not damaged. The peak temperature of the package
depends on package thickness and volume and is classified in accordance with
Table 160 and 161
Table 160. SnPb eutectic process (from J-STD-020C)
Package thickness (mm) Package reflow temperature (°C)
Volume (mm3)
< 350
235
≥ 350
220
< 2.5
≥ 2.5
220
220
Table 161. Lead-free process (from J-STD-020C)
Package thickness (mm) Package reflow temperature (°C)
Volume (mm3)
< 350
260
350 to 2000
> 2000
260
< 1.6
260
250
245
1.6 to 2.5
> 2.5
260
245
250
245
Moisture sensitivity precautions, as indicated on the packing, must be respected at all
times.
Studies have shown that small packages reach higher temperatures during reflow
soldering, see Figure 41.
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Single-chip USB OTG Controller
maximum peak temperature
= MSL limit, damage level
temperature
minimum peak temperature
= minimum soldering temperature
peak
temperature
time
001aac844
MSL: Moisture Sensitivity Level
Fig 41. Temperature profiles for large and small components
For further information on temperature profiles, refer to Application Note AN10365
“Surface mount reflow soldering description”.
22. Abbreviations
Table 162. Abbreviations
Acronym
ACK
ASIC
ATL
Description
Acknowledge
Application-Specific Integrated Circuit
Asynchronous Transfer List
Analog USB Transceiver
Complementary Metal-Oxide Semiconductor
Cyclic Redundancy Check
Direct Memory Access
Digital Still Camera
ATX
CMOS
CRC
DMA
DSC
ED
Endpoint Descriptor
EHCI
EMI
Enhanced Host Controller Interface
ElectroMagnetic Interference
End-Of-Frame
EOF
EOP
EOT
ESR
GPS
HC
End-Of-Packet
End-Of-Transfer
Equivalent Series Resistance
Global Positioning System
Host Controller
HCCA
HCD
Host Controller Communication Area
Host Controller Driver
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Single-chip USB OTG Controller
Table 162. Abbreviations …continued
Acronym
Description
HNP
INTL
IS
Host Negotiation Protocol
Interrupt Transfer List
Implementation-Specific
Isochronous
ISO
ISR
Interrupt Service Routine
Isochronous Transfer List
Low-Speed
ISTL
LS
MOSFET
MSB
NAK
OHCI
OPR
OTG
PDA
PID
Metal-Oxide Semiconductor Field-Effect Transistor
Most Significant Bit
Not Acknowledged
Open Host Controller Interface
Operational
On-The-Go
Personal Digital Assistant
Packet IDentifier
PIO
Programmed Input/Output
Phase-Locked Loop
PLL
PMOS
POR
PORP
POST
PTD
RISC
SIE
Positive Metal-Oxide Semiconductor
Power-On Reset
Power-On Reset Pulse
Power-On Self Test
Philips Transfer Descriptor
Reduced Instruction Set Computing
Serial Interface Engine
Start-Of-Frame
SOF
SRP
TD
Session Request Protocol
Transfer Descriptor
USB
USBD
Universal Serial Bus
Universal Serial Bus Device
23. References
[1] On-The-Go Supplement to the USB 2.0 Specification Rev. 1.0a
[2] Universal Serial Bus Specification Rev. 2.0
[3] ISP136x Embedded Programming Guide (UM10008)
[4] Open Host Controller Interface Specification for USB Release 1.0a
[5] Interrupt Control application note
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24. Revision history
Table 163. Revision history
Document ID
ISP1362_5
Release date
Data sheet status
Change notice
Supersedes
20070508
Product data sheet
-
ISP1362-04
Modifications:
• The format of this data sheet has been redesigned to comply with the new presentation and
information standard of NXP Semiconductors.
• Legal texts have been adapted to the new company name where appropriate.
• Section 2 “Features”: updated.
• Table 2 “Pin description”: removed table note “All I/O pads are 5 V tolerant”.
• Table 29 “OtgInterruptEnable register: bit description”: updated description for all the bits.
• Section 14 “Host Controller registers”: updated the first paragraph.
• Table 36 “HcRevision register: bit description”: updated description for bits 7 to 0.
• Table 38 “HcControl register: bit description”: updated description for bits 7 to 6.
• Section 14.1.4 “HcInterruptStatus register (R/W: 03h/83h)”: updated the first paragraph.
• Table 42 “HcInterruptStatus register: bit description”: updated description for bits 6 and 0.
• Table 46 “HcInterruptDisable register: bit description”: updated description for bit 31.
• Table 52 “HcFmNumber register: bit description”: updated description for bits 15 to 0.
• Section 14.2.4 “HcLSThreshold register (R/W: 11h/91h)”: updated the first paragraph.
• Table 54 “HcLSThreshold register: bit description”: updated description for bits 10 to 0.
• Section 14.3 “HC root hub registers”: updated the last paragraph.
• Table 56 “HcRhDescriptorA register: bit description”: updated description for bits 1 to 0.
• Section 14.3.2 “HcRhDescriptorB register (R/W: 13h/93h)”: updated the first paragraph.
• Section 14.3.4 “HcRhPortStatus[1:2] register (R/W [1]: 15h/95h; [2]: 16h/96h)”: updated the first
paragraph.
• Table 64 “HcHardwareConfiguration register: bit description”: updated description for bits 8, 6 and
5.
• Section 14.4.4 “HcmPInterrupt register (R/W: 24h/A4h)”: removed the second paragraph.
• Table 75 “HcSoftwareReset register: bit description”: updated the description column.
• Section 14.9.8 “HcATLPTDDoneThresholdCount register (R/W: 51h/D1h)”: updated the first
paragraph.
• Table 105 “HcATLPTDDoneThresholdCount register: bit description”: updated description for bits
4 to 0.
• Section 14.9.9 “HcATLPTDDoneThresholdTimeOut register (R/W: 52h/D2h)”: updated the first
paragraph.
• Table 110 “DcEndpointConfiguration register: bit description”: updated description for bits 7 and 5.
• Table 114 “DcMode register: bit description”: updated description for bit 2.
• Section 15.1.5 “DcInterruptEnable register (R/W: C3h/C2h)”: updated the first paragraph.
• Table 118 “DcInterruptEnable register: bit description”: updated the description column.
• Section 15.1.7 “DcDMACounter register (R/W: F3h/F2h)”: updated the second paragraph.
• Table 122 “DcDMACounter register: bit description”: added description for bits 15 to 0.
• Table 126 “DcEndpointStatus register: bit description”: updated description for bit 3.
• Table 128 “DcEndpointStatusImage register: bit description”: updated description for bit 3.
• Table 144 “Recommended operating conditions”: added VI(clk) and removed 1.8 V tolerant under VI.
• Section 19.1 “Programmed I/O timing” and Section 19.2 “DMA timing”: added conditions to tables.
• Table 152 “Dynamic characteristics: Host Controller programmed interface timing”: updated
description for tAH
.
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Single-chip USB OTG Controller
Table 163. Revision history …continued
Document ID
Release date
Data sheet status
Change notice
Supersedes
ISP1362-04
(9397 750 13957)
20041224
Product data
-
-
-
-
ISP1362-03
ISP1362-03
(9397 750 12337)
20040106
20030219
20021120
Product data
Product data
Preliminary data
ISP1362-02
ISP1362-01
-
ISP1362-02
(9397 750 10767)
ISP1362-01
(9397 750 10087)
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25. Legal information
25.1 Data sheet status
Document status[1][2]
Product status[3]
Development
Definition
Objective [short] data sheet
This document contains data from the objective specification for product development.
This document contains data from the preliminary specification.
This document contains the product specification.
Preliminary [short] data sheet Qualification
Product [short] data sheet Production
[1]
[2]
[3]
Please consult the most recently issued document before initiating or completing a design.
The term ‘short data sheet’ is explained in section “Definitions”.
The product status of device(s) described in this document may have changed since this document was published and may differ in case of multiple devices. The latest product status
information is available on the Internet at URL http://www.nxp.com.
result in personal injury, death or severe property or environmental damage.
25.2 Definitions
NXP Semiconductors accepts no liability for inclusion and/or use of NXP
Semiconductors products in such equipment or applications and therefore
such inclusion and/or use is at the customer’s own risk.
Draft — The document is a draft version only. The content is still under
internal review and subject to formal approval, which may result in
modifications or additions. NXP Semiconductors does not give any
representations or warranties as to the accuracy or completeness of
information included herein and shall have no liability for the consequences of
use of such information.
Applications — Applications that are described herein for any of these
products are for illustrative purposes only. NXP Semiconductors makes no
representation or warranty that such applications will be suitable for the
specified use without further testing or modification.
Limiting values — Stress above one or more limiting values (as defined in
the Absolute Maximum Ratings System of IEC 60134) may cause permanent
damage to the device. Limiting values are stress ratings only and operation of
the device at these or any other conditions above those given in the
Characteristics sections of this document is not implied. Exposure to limiting
values for extended periods may affect device reliability.
Short data sheet — A short data sheet is an extract from a full data sheet
with the same product type number(s) and title. A short data sheet is intended
for quick reference only and should not be relied upon to contain detailed and
full information. For detailed and full information see the relevant full data
sheet, which is available on request via the local NXP Semiconductors sales
office. In case of any inconsistency or conflict with the short data sheet, the
full data sheet shall prevail.
Terms and conditions of sale — NXP Semiconductors products are sold
subject to the general terms and conditions of commercial sale, as published
at http://www.nxp.com/profile/terms, including those pertaining to warranty,
intellectual property rights infringement and limitation of liability, unless
explicitly otherwise agreed to in writing by NXP Semiconductors. In case of
any inconsistency or conflict between information in this document and such
terms and conditions, the latter will prevail.
25.3 Disclaimers
General — Information in this document is believed to be accurate and
reliable. However, NXP Semiconductors does not give any representations or
warranties, expressed or implied, as to the accuracy or completeness of such
information and shall have no liability for the consequences of use of such
information.
No offer to sell or license — Nothing in this document may be interpreted
or construed as an offer to sell products that is open for acceptance or the
grant, conveyance or implication of any license under any copyrights, patents
or other industrial or intellectual property rights.
Right to make changes — NXP Semiconductors reserves the right to make
changes to information published in this document, including without
limitation specifications and product descriptions, at any time and without
notice. This document supersedes and replaces all information supplied prior
to the publication hereof.
25.4 Trademarks
Notice: All referenced brands, product names, service names and trademarks
are the property of their respective owners.
Suitability for use — NXP Semiconductors products are not designed,
authorized or warranted to be suitable for use in medical, military, aircraft,
space or life support equipment, nor in applications where failure or
malfunction of a NXP Semiconductors product can reasonably be expected to
GoodLink — is a trademark of NXP B.V.
SoftConnect — is a trademark of NXP B.V.
26. Contact information
For additional information, please visit: http://www.nxp.com
For sales office addresses, send an email to: salesaddresses@nxp.com
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Single-chip USB OTG Controller
27. Tables
Table 1. Ordering information . . . . . . . . . . . . . . . . . . . . .4
Table 2. Pin description . . . . . . . . . . . . . . . . . . . . . . . . . .7
Table 3. Bus access priority table for the ISP1362 . . . .13
Table 4. Buffer memory areas and their applications . .14
Table 5. I/O port addressing . . . . . . . . . . . . . . . . . . . . .20
Table 6. Registers used in addressing modes . . . . . . . .25
Table 7. Recommended capacitor values . . . . . . . . . . .38
Table 8. Port 1 function . . . . . . . . . . . . . . . . . . . . . . . . .40
Table 9. Generic PTD structure: bit allocation . . . . . . . .42
Table 10. Special fields for ATL, interrupt and ISO . . . . .42
Table 11. Generic PTD structure: bit description . . . . . . .43
Table 12. ATL buffer area . . . . . . . . . . . . . . . . . . . . . . . .45
Table 13. Interrupt polling . . . . . . . . . . . . . . . . . . . . . . . .46
Table 14. Endpoint access and programmability . . . . . . .52
Table 15. Programmable buffer memory size . . . . . . . . .53
Table 16. Memory configuration example . . . . . . . . . . . .53
Table 17. Endpoint selection for the DMA transfer . . . . .55
Table 18. 8237 compatible mode: pin functions . . . . . . .55
Table 19. Summary of EOT conditions for a bulk
Table 47. HcFmInterval register: bit allocation . . . . . . . . 77
Table 48. HcFmInterval register: bit description . . . . . . . 77
Table 49. HcFmRemaining register: bit allocation . . . . . 78
Table 50. HcFmRemaining register: bit description . . . . 78
Table 51. HcFmNumber register: bit allocation . . . . . . . . 79
Table 52. HcFmNumber register: bit description . . . . . . 79
Table 53. HcLSThreshold register: bit allocation . . . . . . 79
Table 54. HcLSThreshold register: bit description . . . . . 80
Table 55. HcRhDescriptorA register: bit description . . . . 81
Table 56. HcRhDescriptorA register: bit description . . . . 81
Table 57. HcRhDescriptorB register: bit allocation . . . . . 82
Table 58. HcRhDescriptorB register: bit description . . . . 83
Table 59. HcRhStatus register: bit allocation . . . . . . . . . 83
Table 60. HcRhStatus register: bit description . . . . . . . . 84
Table 61. HcRhPortStatus[1:2] register: bit allocation . . 84
Table 62. HcRhPortStatus[1:2] register: bit description . 85
Table 63. HcHardwareConfiguration register:
bit allocation . . . . . . . . . . . . . . . . . . . . . . . . . . 88
Table 64. HcHardwareConfiguration register:
endpoint . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .57
bit description . . . . . . . . . . . . . . . . . . . . . . . . . 89
Table 20. Recommended EOT usage for isochronous
endpoints . . . . . . . . . . . . . . . . . . . . . . . . . . . . .58
Table 65. HcDMAConfiguration register: bit allocation . . 90
Table 66. HcDMAConfiguration register: bit description . 90
Table 67. Buffer_Type_Select[2:0]: bit description . . . . . 91
Table 68. HcTransferCounter register: bit description . . . 91
Table 69. HcmPInterrupt register: bit allocation . . . . . . . 92
Table 70. HcmPInterrupt register: bit description . . . . . . 92
Table 71. HcmPInterruptEnable register: bit allocation . . 93
Table 72. HcmPInterruptEnable register: bit description 94
Table 73. HcChipID register: bit description . . . . . . . . . . 94
Table 74. HcScratch register: bit description . . . . . . . . . 95
Table 75. HcSoftwareReset register: bit description . . . . 95
Table 76. HcBufferStatus register: bit allocation . . . . . . . 95
Table 77. HcBufferStatus register: bit description . . . . . . 95
Table 78. HcDirectAddressLength register: bit allocation 96
Table 79. HcDirectAddressLength register:
Table 21. OTG Control registers overview . . . . . . . . . . . .60
Table 22. OtgControl register: bit allocation . . . . . . . . . .60
Table 23. OtgControl register: bit description . . . . . . . . .61
Table 24. OtgStatus register: bit allocation . . . . . . . . . . .62
Table 25. OtgStatus register: bit description . . . . . . . . . .62
Table 26. OtgInterrupt register: bit allocation . . . . . . . . .63
Table 27. OtgInterrupt register: bit description . . . . . . . .64
Table 28. OtgInterruptEnable register: bit allocation . . . .65
Table 29. OtgInterruptEnable register: bit description . . .65
Table 30. OtgTimer register: bit allocation . . . . . . . . . . . .66
Table 31. OtgTimer register: bit description . . . . . . . . . .67
Table 32. OtgAltTimer register: bit allocation . . . . . . . . .67
Table 33. OtgAltTimer register: bit description . . . . . . . .68
Table 34. Host Controller registers overview . . . . . . . . . .68
Table 35. HcRevision register: bit allocation . . . . . . . . . .70
Table 36. HcRevision register: bit description . . . . . . . . .70
Table 37. HcControl register: bit allocation . . . . . . . . . . .70
Table 38. HcControl register: bit description . . . . . . . . . .71
Table 39. HcCommandStatus register: bit allocation . . .72
Table 40. HcCommandStatus register: bit description . .73
Table 41. HcInterruptStatus register: bit allocation . . . . .73
Table 42. HcInterruptStatus register: bit description . . . .74
Table 43. HcInterruptEnable register: bit allocation . . . . .74
Table 44. HcInterruptEnable register: bit description . . .75
Table 45. HcInterruptDisable register: bit allocation . . . .76
Table 46. HcInterruptDisable register: bit description . . .76
bit description . . . . . . . . . . . . . . . . . . . . . . . . . 97
Table 80. HcDirectAddressData register: bit description 97
Table 81. HcISTLBufferSize register: bit description . . . 97
Table 82. HcISTL0BufferPort register: bit description . . . 98
Table 83. HcISTL1BufferPort register: bit description . . . 98
Table 84. HcISTLToggleRate register: bit allocation . . . . 98
Table 85. HcISTLToggleRate register: bit description . . . 99
Table 86. HcINTLBufferSize register: bit description . . . 99
Table 87. HcINTLBufferPort register: bit description . . . . 99
Table 88. HcINTLBlkSize register: bit allocation . . . . . . 100
Table 89. HcINTLBlkSize register: bit description . . . . . 100
Table 90. HcINTLPTDDoneMap register:
bit description . . . . . . . . . . . . . . . . . . . . . . . . 100
continued >>
ISP1362_5
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
147 of 152
ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
Table 91. HcINTLPTDSkipMap register: bit description 101
Table 92. HcINTLLastPTD register: bit description . . . .101
Table 93. HcINTLCurrentActivePTD register:
bit allocation . . . . . . . . . . . . . . . . . . . . . . . . . .101
Table 94. HcINTLCurrentActivePTD register:
bit description . . . . . . . . . . . . . . . . . . . . . . . .102
Table 95. HcATLBufferSize register: bit description . . .102
Table 96. HcATLBufferPort register: bit description . . . .102
Table 97. HcATLBlkSize register: bit allocation . . . . . . .103
Table 98. HcATLBlkSize register: bit description . . . . . .103
Table 99. HcATLPTDDoneMap register: bit description 103
Table 100.HcATLPTDSkipMap register: bit description .104
Table 101.HcATLLastPTD register: bit description . . . . .104
Table 102.HcATLCurrentActivePTD register:
Table 128.DcEndpointStatusImage register:
bit description . . . . . . . . . . . . . . . . . . . . . . . . 118
Table 129.DcErrorCode register: bit allocation . . . . . . . 119
Table 130.DcErrorCode register: bit description . . . . . . 119
Table 131.Transaction error codes . . . . . . . . . . . . . . . . . 119
Table 132.DcLock register: bit allocation . . . . . . . . . . . . 120
Table 133.DcLock register: bit description . . . . . . . . . . . 120
Table 134.DcScratch Information register: bit allocation 120
Table 135.DcScratch Information register:
bit description . . . . . . . . . . . . . . . . . . . . . . . . 121
Table 136.DcFrameNumber register: bit allocation . . . . 121
Table 137.DcFrameNumber register: bit description . . . 121
Table 138.Example of the DcFrameNumber
register access . . . . . . . . . . . . . . . . . . . . . . . 121
Table 139.DcChipID register: bit allocation . . . . . . . . . . 122
Table 140.DcChipID register: bit description . . . . . . . . . 122
Table 141.DcInterrupt register: bit allocation . . . . . . . . . 122
Table 142.DcInterrupt register: bit description . . . . . . . . 123
Table 143.Limiting values . . . . . . . . . . . . . . . . . . . . . . . . 124
Table 144.Recommended operating conditions . . . . . . . 124
Table 145.Static characteristics: supply pins . . . . . . . . . 125
Table 146.Static characteristics: digital pins . . . . . . . . . 125
Table 147.Static characteristics: analog I/O pins
(D+, D−) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 126
Table 148.Static characteristics: charge pump . . . . . . . 126
Table 149.Dynamic characteristics . . . . . . . . . . . . . . . . 129
Table 150.Dynamic characteristics: analog I/O
lines (D+, D−) . . . . . . . . . . . . . . . . . . . . . . . . 129
Table 151.Dynamic characteristics: charge pump . . . . . 129
Table 152.Dynamic characteristics: Host Controller
programmed interface timing . . . . . . . . . . . . . 130
Table 153.Dynamic characteristics: Peripheral
Controller programmed interface timing . . . . 131
Table 154.Dynamic characteristics: Host Controller
single-cycle DMA timing . . . . . . . . . . . . . . . . 133
Table 155.Dynamic characteristics: Host Controller burst
mode DMA timing . . . . . . . . . . . . . . . . . . . . . 134
Table 156.Dynamic characteristics: Peripheral Controller
single-cycle DMA timing (8237 mode) . . . . . 135
Table 157.Dynamic characteristics: Peripheral
bit allocation . . . . . . . . . . . . . . . . . . . . . . . . . .104
Table 103.HcATLCurrentActivePTD register:
bit description . . . . . . . . . . . . . . . . . . . . . . . .104
Table 104.HcATLPTDDoneThresholdCount register:
bit allocation . . . . . . . . . . . . . . . . . . . . . . . . . .105
Table 105.HcATLPTDDoneThresholdCount register:
bit description . . . . . . . . . . . . . . . . . . . . . . . .105
Table 106.HcATLPTDDoneThresholdTimeOut register:
bit allocation . . . . . . . . . . . . . . . . . . . . . . . . . .105
Table 107.HcATLPTDDoneThresholdTimeOut register:
bit description . . . . . . . . . . . . . . . . . . . . . . . .106
Table 108.Peripheral Controller command and register
overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . .106
Table 109.DcEndpointConfiguration register:
bit allocation . . . . . . . . . . . . . . . . . . . . . . . . . .109
Table 110.DcEndpointConfiguration register:
bit description . . . . . . . . . . . . . . . . . . . . . . . .109
Table 111.DcAddress register: bit allocation . . . . . . . . .109
Table 112.DcAddress register: bit description . . . . . . . .109
Table 113.DcMode register: bit allocation . . . . . . . . . . .110
Table 114.DcMode register: bit description . . . . . . . . . .110
Table 115.DcHardwareConfiguration register:
bit allocation . . . . . . . . . . . . . . . . . . . . . . . . . .110
Table 116.DcHardwareConfiguration register:
bit description . . . . . . . . . . . . . . . . . . . . . . . .111
Table 117.DcInterruptEnable register: bit allocation . . . .112
Table 118.DcInterruptEnable register: bit description . .112
Table 119.DcDMAConfiguration register: bit allocation .113
Table 120.DcDMAConfiguration register: bit description 113
Table 121.DcDMACounter register: bit allocation . . . . . .114
Table 122.DcDMACounter register: bit description . . . .114
Table 123.Endpoint buffer memory organization . . . . . .115
Table 124.Example of endpoint buffer memory access .116
Table 125.DcEndpointStatus register: bit allocation . . . .116
Table 126.DcEndpointStatus register: bit description . . .116
Table 127.DcEndpointStatusImage register:
Controller single-cycle DMA read timing in
DACK-only mode . . . . . . . . . . . . . . . . . . . . . . 135
Table 158.Dynamic characteristics: Peripheral
Controller single-cycle DMA write timing in
DACK-only mode . . . . . . . . . . . . . . . . . . . . . . 136
Table 159.Dynamic characteristics: Peripheral
Controller burst mode DMA timing . . . . . . . . 137
Table 160.SnPb eutectic process (from J-STD-020C) . . 141
Table 161.Lead-free process (from J-STD-020C) . . . . . 141
Table 162.Abbreviations . . . . . . . . . . . . . . . . . . . . . . . . . 142
Table 163.Revision history . . . . . . . . . . . . . . . . . . . . . . . 144
bit allocation . . . . . . . . . . . . . . . . . . . . . . . . . .118
continued >>
ISP1362_5
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
148 of 152
ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
28. Figures
Fig 1. Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . . .5
Fig 2. Pin configuration LQFP64 . . . . . . . . . . . . . . . . . . .6
Fig 3. Pin configuration TFBGA64 . . . . . . . . . . . . . . . . . .6
Fig 4. Recommended values of the ISP1362 buffer
memory allocation . . . . . . . . . . . . . . . . . . . . . . . .15
Fig 5. A sample snapshot of the ATL or INTL memory
management scheme . . . . . . . . . . . . . . . . . . . . .16
Fig 6. A sample snapshot of the ISTL memory
timing in DACK-only mode . . . . . . . . . . . . . . . . 136
Fig 37. Peripheral Controller single-cycle DMA
write timing in DACK-only mode . . . . . . . . . . . . 136
Fig 38. Peripheral Controller burst mode DMA timing. . 137
Fig 39. Package outline SOT314-2 (LQFP64). . . . . . . . 138
Fig 40. Package outline SOT543-1 (TFBGA64) . . . . . . 139
Fig 41. Temperature profiles for large and small
components. . . . . . . . . . . . . . . . . . . . . . . . . . . . 142
management scheme . . . . . . . . . . . . . . . . . . . . .17
Fig 7. Peripheral Controller buffer memory
organization . . . . . . . . . . . . . . . . . . . . . . . . . . . . .18
Fig 8. PIO interface between a microprocessor
and the ISP1362 . . . . . . . . . . . . . . . . . . . . . . . . .19
Fig 9. DMA interface between a microprocessor
and the ISP1362 . . . . . . . . . . . . . . . . . . . . . . . . .19
Fig 10. Microprocessor access to the Host Controller
or the Peripheral Controller . . . . . . . . . . . . . . . . .20
Fig 11. Access to internal control registers . . . . . . . . . . .21
Fig 12. PIO register access . . . . . . . . . . . . . . . . . . . . . . .21
Fig 13. PIO access for a 16-bit or 32-bit register . . . . . . .22
Fig 14. HC and OTG interrupt logic . . . . . . . . . . . . . . . . .27
Fig 15. Internal power-on reset timing . . . . . . . . . . . . . . .30
Fig 16. Clock with respect to the external
power-on reset. . . . . . . . . . . . . . . . . . . . . . . . . . .30
Fig 17. HNP sequence of events . . . . . . . . . . . . . . . . . . .33
Fig 18. Dual-role A-device state diagram. . . . . . . . . . . . .35
Fig 19. Dual-role B-device state diagram. . . . . . . . . . . . .36
Fig 20. External capacitors connection . . . . . . . . . . . . . .38
Fig 21. USB Host Controller states of the ISP1362 . . . . .39
Fig 22. PTD data stored in the buffer memory. . . . . . . . .41
Fig 23. Using internal overcurrent detection circuit . . . . .47
Fig 24. Using external overcurrent detection circuit. . . . .48
Fig 25. Using internal charge pump. . . . . . . . . . . . . . . . .48
Fig 26. Peripheral Controller in 8327 compatible
DMA mode. . . . . . . . . . . . . . . . . . . . . . . . . . . . . .56
Fig 27. Suspend and resume timing . . . . . . . . . . . . . . . .59
Fig 28. Efficiency as a function of load current . . . . . . .127
Fig 29. Output voltage as a function of load current . . .128
Fig 30. Host Controller programmed interface timing . .131
Fig 31. Peripheral Controller programmed interface
read timing (I/O and 8237 compatible DMA) . . .132
Fig 32. Peripheral Controller programmed interface
write timing (I/O and 8237 compatible DMA) . . .133
Fig 33. Host Controller single-cycle DMA timing . . . . . .134
Fig 34. Host Controller burst mode DMA timing . . . . . .135
Fig 35. Peripheral Controller single-cycle DMA timing
(8237 mode). . . . . . . . . . . . . . . . . . . . . . . . . . . .135
Fig 36. Peripheral Controller single-cycle DMA read
continued >>
ISP1362_5
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
149 of 152
ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
29. Contents
1
General description . . . . . . . . . . . . . . . . . . . . . . 1
9
Power-On Reset (POR) . . . . . . . . . . . . . . . . . . 30
2
Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 1
Applications . . . . . . . . . . . . . . . . . . . . . . . . . . . . 2
Host/peripheral roles. . . . . . . . . . . . . . . . . . . . . 3
Ordering information. . . . . . . . . . . . . . . . . . . . . 4
Block diagram . . . . . . . . . . . . . . . . . . . . . . . . . . 5
10
10.1
10.2
10.3
10.3.1
10.3.2
10.4
10.4.1
10.4.2
10.4.3
10.5
On-The-Go (OTG) Controller . . . . . . . . . . . . . 31
Introduction . . . . . . . . . . . . . . . . . . . . . . . . . . 31
Dual-role device . . . . . . . . . . . . . . . . . . . . . . . 31
Session Request Protocol (SRP). . . . . . . . . . 32
B-device initiating SRP. . . . . . . . . . . . . . . . . . 32
A-device responding to SRP . . . . . . . . . . . . . 32
Host Negotiation Protocol (HNP) . . . . . . . . . . 33
Sequence of HNP events. . . . . . . . . . . . . . . . 33
OTG state diagrams. . . . . . . . . . . . . . . . . . . . 34
HNP implementation and OTG state machine 36
Power saving in the idle state and during
3
3.1
4
5
6
6.1
6.2
Pinning information. . . . . . . . . . . . . . . . . . . . . . 6
Pinning . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 6
Pin description . . . . . . . . . . . . . . . . . . . . . . . . . 7
7
Functional description . . . . . . . . . . . . . . . . . . 12
On-The-Go (OTG) controller. . . . . . . . . . . . . . 12
Advanced NXP Slave Host Controller. . . . . . . 12
NXP Peripheral Controller. . . . . . . . . . . . . . . . 12
Phase-Locked Loop (PLL) clock multiplier . . . 12
USB and OTG transceivers . . . . . . . . . . . . . . 12
Overcurrent protection . . . . . . . . . . . . . . . . . . 12
Bus interface. . . . . . . . . . . . . . . . . . . . . . . . . . 12
Peripheral Controller and Host Controller
7.1
7.2
7.3
7.4
7.5
7.6
7.7
7.8
wake-up . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 37
Current capacity of the OTG charge pump . . 37
10.6
11
USB Host Controller (HC) . . . . . . . . . . . . . . . . 38
USB states of the Host Controller . . . . . . . . . 38
USB traffic generation . . . . . . . . . . . . . . . . . . 39
USB ports. . . . . . . . . . . . . . . . . . . . . . . . . . . . 40
Philips Transfer Descriptor (PTD). . . . . . . . . . 40
Features of the control and bulk transfer
11.1
11.2
11.3
11.4
11.5
buffer memory. . . . . . . . . . . . . . . . . . . . . . . . . 12
GoodLink . . . . . . . . . . . . . . . . . . . . . . . . . . . . 13
Charge pump . . . . . . . . . . . . . . . . . . . . . . . . . 13
7.9
7.10
(aperiodic transfer) . . . . . . . . . . . . . . . . . . . . . 44
Sending a USB device request
11.5.1
8
8.1
8.1.1
8.1.2
Host and device bus interface . . . . . . . . . . . . 13
Memory organization . . . . . . . . . . . . . . . . . . . 14
Memory organization for the Host Controller . 14
Memory organization for the Peripheral
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
PIO access mode . . . . . . . . . . . . . . . . . . . . . . 18
DMA mode . . . . . . . . . . . . . . . . . . . . . . . . . . . 19
PIO access to internal control registers . . . . . 20
PIO access to the buffer memory . . . . . . . . . . 23
PIO access to the buffer memory by using
(Get Descriptor) . . . . . . . . . . . . . . . . . . . . . . . 45
11.5.1.1 Step 1. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
11.5.1.2 Step 2. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
11.5.1.3 Step 3. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
11.5.1.4 Step 4. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
11.5.1.5 Step 5. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 45
8.2
8.3
8.4
8.5
11.6
11.7
11.8
11.8.1
11.8.2
11.8.3
Features of the interrupt transfer . . . . . . . . . . 46
Features of the Isochronous (ISO) transfer . . 46
Overcurrent protection circuit . . . . . . . . . . . . . 46
Using internal overcurrent detection circuit . . 46
Using external overcurrent detection circuit . . 47
Overcurrent detection circuit using internal
8.5.1
direct addressing . . . . . . . . . . . . . . . . . . . . . . 23
PIO access to the buffer memory by using
8.5.2
charge pump in OTG mode . . . . . . . . . . . . . . 48
Overcurrent detection circuit using external
5 V power source in OTG mode. . . . . . . . . . . 49
ISP1362 Host Controller power management 49
indirect addressing . . . . . . . . . . . . . . . . . . . . . 24
Setting up a DMA transfer . . . . . . . . . . . . . . . 25
Configuring registers for a DMA transfer . . . . 25
Combining the two DMA channels . . . . . . . . . 26
Interrupts . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Interrupt in the Host Controller and the OTG
Controller . . . . . . . . . . . . . . . . . . . . . . . . . . . . 26
Interrupt in the Peripheral Controller. . . . . . . . 28
Combining INT1 and INT2 . . . . . . . . . . . . . . . 29
Behavior difference between level-triggered
11.8.4
11.9
8.6
8.6.1
8.6.2
8.7
12
12.1
12.1.1
12.1.2
12.2
USB Peripheral Controller . . . . . . . . . . . . . . . 49
Peripheral Controller data transfer operation . 50
IN data transfer. . . . . . . . . . . . . . . . . . . . . . . . 50
OUT data transfer. . . . . . . . . . . . . . . . . . . . . . 50
Device DMA transfer . . . . . . . . . . . . . . . . . . . 51
DMA for an IN endpoint (internal Peripheral
8.7.1
8.7.2
8.7.3
8.7.4
12.2.1
and edge-triggered interrupts . . . . . . . . . . . . . 29
Level-triggered interrupt . . . . . . . . . . . . . . . . . 29
Edge-triggered interrupt . . . . . . . . . . . . . . . . . 29
Controller to the external USB host) . . . . . . . 51
DMA for OUT endpoint (external USB host
to internal Peripheral Controller) . . . . . . . . . . 51
8.7.4.1
8.7.4.2
12.2.2
continued >>
ISP1362_5
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
150 of 152
ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
12.3
12.3.1
Endpoint description. . . . . . . . . . . . . . . . . . . . 52
14.4.5
14.5
14.5.1
14.5.2
14.5.3
14.6
HcmPInterruptEnable register (R/W: 25h/A5h) 93
HC miscellaneous registers . . . . . . . . . . . . . . 94
HcChipID register (R: 27h). . . . . . . . . . . . . . . 94
HcScratch register (R/W: 28h/A8h) . . . . . . . . 94
HcSoftwareReset register (W: A9h). . . . . . . . 95
HC buffer RAM control registers . . . . . . . . . . 95
HcBufferStatus register (R/W: 2Ch/ACh) . . . . 95
HcDirectAddressLength register
(R/W: 32h/B2h) . . . . . . . . . . . . . . . . . . . . . . . 96
HcDirectAddressData register (R/W: 45h/C5h) 97
Isochronous (ISO) transfer registers . . . . . . . 97
HcISTLBufferSize register (R/W: 30h/B0h) . . 97
HcISTL0BufferPort register (R/W: 40h/C0h) . 97
HcISTL1BufferPort register (R/W: 42h/C2h) . 98
HcISTLToggleRate register (R/W: 47h/C7h) . 98
Interrupt transfer registers . . . . . . . . . . . . . . . 99
HcINTLBufferSize register (R/W: 33h/B3h) . . 99
HcINTLBufferPort register (R/W: 43h/C3h) . . 99
HcINTLBlkSize register (R/W: 53h/D3h) . . . 100
HcINTLPTDDoneMap register (R: 17h) . . . . 100
HcINTLPTDSkipMap register (R/W: 18h/98h) 100
HcINTLLastPTD register (R/W: 19h/99h). . . 101
HcINTLCurrentActivePTD register (R: 1Ah). 101
Control and bulk transfer
Endpoints with programmable buffer memory
size . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
Endpoint access . . . . . . . . . . . . . . . . . . . . . . . 52
Endpoint buffer memory size . . . . . . . . . . . . . 52
Endpoint initialization . . . . . . . . . . . . . . . . . . . 53
Endpoint I/O mode access . . . . . . . . . . . . . . . 54
Special actions on control endpoints . . . . . . . 54
Peripheral Controller DMA transfer. . . . . . . . . 54
Selecting an endpoint for the DMA transfer . . 55
8237 compatible mode . . . . . . . . . . . . . . . . . . 55
End-Of-Transfer conditions . . . . . . . . . . . . . . . 57
12.3.2
12.3.3
12.3.4
12.3.5
12.3.6
12.4
12.4.1
12.4.2
12.4.3
14.6.1
14.6.2
14.6.3
14.7
14.7.1
14.7.2
14.7.3
14.7.4
14.8
14.8.1
14.8.2
14.8.3
14.8.4
14.8.5
14.8.6
14.8.7
14.9
12.4.3.1 Bulk endpoints . . . . . . . . . . . . . . . . . . . . . . . . 57
12.4.3.2 Isochronous endpoints . . . . . . . . . . . . . . . . . . 58
12.5
ISP1362 Peripheral Controller suspend and
resume . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 58
Suspend conditions . . . . . . . . . . . . . . . . . . . . 58
Resume conditions . . . . . . . . . . . . . . . . . . . . . 59
12.5.1
12.5.2
13
OTG registers . . . . . . . . . . . . . . . . . . . . . . . . . . 60
OtgControl register (R/W: 62h/E2h) . . . . . . . . 60
OtgStatus register (R: 67h). . . . . . . . . . . . . . . 62
OtgInterrupt register (R/W: 68h/E8h) . . . . . . . 63
OtgInterruptEnable register (R/W: 69h/E9h). . 65
OtgTimer register (R/W: 6Ah/EAh) . . . . . . . . . 66
OtgAltTimer register (R/W: 6Ch/ECh). . . . . . . 67
13.1
13.2
13.3
13.4
13.5
13.6
(aperiodic transfer) registers . . . . . . . . . . . . 102
HcATLBufferSize register (R/W: 34h/B4h) . . 102
HcATLBufferPort register (R/W: 44h/C4h) . . 102
HcATLBlkSize register (R/W: 54h/D4h) . . . . 102
HcATLPTDDoneMap register (R: 1Bh) . . . . 103
HcATLPTDSkipMap register (R/W: 1Ch/9Ch) 103
HcATLLastPTD register (R/W: 1Dh/9Dh). . . 104
HcATLCurrentActivePTD register (R: 1Eh) . 104
HcATLPTDDoneThresholdCount register
14.9.1
14.9.2
14.9.3
14.9.4
14.9.5
14.9.6
14.9.7
14.9.8
14
14.1
Host Controller registers. . . . . . . . . . . . . . . . . 68
HC control and status registers . . . . . . . . . . . 70
HcRevision register (R: 00h). . . . . . . . . . . . . . 70
HcControl register (R/W: 01h/81h) . . . . . . . . . 70
HcCommandStatus register (R/W: 02h/82h) . 72
HcInterruptStatus register (R/W: 03h/83h) . . . 73
HcInterruptEnable register (R/W: 04h/84h) . . 74
HcInterruptDisable register (R/W: 05h/85h) . . 75
HC frame counter registers. . . . . . . . . . . . . . . 76
HcFmInterval register (R/W: 0Dh/8Dh). . . . . . 76
HcFmRemaining register (R/W: 0Eh/8Eh) . . . 77
HcFmNumber register (R/W: 0Fh/8Fh). . . . . . 78
HcLSThreshold register (R/W: 11h/91h). . . . . 79
HC root hub registers . . . . . . . . . . . . . . . . . . . 80
HcRhDescriptorA register (R/W: 12h/92h) . . . 80
HcRhDescriptorB register (R/W: 13h/93h) . . . 82
HcRhStatus register (R/W: 14h/94h) . . . . . . . 83
HcRhPortStatus[1:2] register (R/W [1]:
14.1.1
14.1.2
14.1.3
14.1.4
14.1.5
14.1.6
14.2
14.2.1
14.2.2
14.2.3
14.2.4
14.3
(R/W: 51h/D1h) . . . . . . . . . . . . . . . . . . . . . . 105
HcATLPTDDoneThresholdTimeOut register
(R/W: 52h/D2h) . . . . . . . . . . . . . . . . . . . . . . 105
14.9.9
15
15.1
15.1.1
Peripheral Controller registers. . . . . . . . . . . 106
Initialization commands . . . . . . . . . . . . . . . . 108
DcEndpointConfiguration register (R/W:
30h to 3Fh/20h to 2Fh). . . . . . . . . . . . . . . . . 108
DcAddress register (R/W: B7h/B6h) . . . . . . 109
DcMode register (R/W: B9h/B8h). . . . . . . . . 109
DcHardwareConfiguration register (R/W:
14.3.1
14.3.2
14.3.3
14.3.4
15.1.2
15.1.3
15.1.4
BBh/BAh) . . . . . . . . . . . . . . . . . . . . . . . . . . . 110
DcInterruptEnable register (R/W: C3h/C2h). 111
DcDMAConfiguration (R/W: F1h/F0h) . . . . . 113
DcDMACounter register (R/W: F3h/F2h) . . . 114
Reset device (F6h). . . . . . . . . . . . . . . . . . . . 114
Data flow commands . . . . . . . . . . . . . . . . . . 115
15h/95h; [2]: 16h/96h). . . . . . . . . . . . . . . . . . . 84
HC DMA and interrupt control registers . . . . . 88
HcHardwareConfiguration register (R/W:
20h/A0h) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 88
HcDMAConfiguration register (R/W: 21h/A1h) 90
HcTransferCounter register (R/W: 22h/A2h). . 91
HcmPInterrupt register (R/W: 24h/A4h) . . . . . 91
15.1.5
15.1.6
15.1.7
15.1.8
15.2
14.4
14.4.1
14.4.2
14.4.3
14.4.4
continued >>
ISP1362_5
© NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 05 — 8 May 2007
151 of 152
ISP1362
NXP Semiconductors
Single-chip USB OTG Controller
15.2.1
Write or read endpoint buffer (R/W:
26
27
28
29
Contact information . . . . . . . . . . . . . . . . . . . 146
Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 147
Figures . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149
Contents. . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150
10h,12h to 1Fh/01h to 0Fh) . . . . . . . . . . . . . 115
Read endpoint status (R: 50h to 5Fh). . . . . . 116
Stall endpoint or unstall endpoint
(40h to 4Fh/80h to 8Fh) . . . . . . . . . . . . . . . . 117
Validate endpoint buffer (61h to 6Fh) . . . . . . 117
Clear endpoint buffer (70h, 72h to 7Fh) . . . . 117
DcEndpointStatusImage register
15.2.2
15.2.3
15.2.4
15.2.5
15.2.6
(D0h to DFh). . . . . . . . . . . . . . . . . . . . . . . . . 118
Acknowledge set up (F4h) . . . . . . . . . . . . . . 118
General commands . . . . . . . . . . . . . . . . . . . 119
Read endpoint error code (R: A0h to AFh). . 119
Unlock Device (B0h) . . . . . . . . . . . . . . . . . . . 120
DcScratch register (R/W: B3h/B2h) . . . . . . . 120
DcFrameNumber register (R: B4h). . . . . . . . 121
DcChipID (R: B5h) . . . . . . . . . . . . . . . . . . . . 121
DcInterrupt register (R: C0h) . . . . . . . . . . . . 122
15.2.7
15.3
15.3.1
15.3.2
15.3.3
15.3.4
15.3.5
15.3.6
16
17
18
Limiting values. . . . . . . . . . . . . . . . . . . . . . . . 124
Recommended operating conditions. . . . . . 124
Static characteristics. . . . . . . . . . . . . . . . . . . 125
19
19.1
Dynamic characteristics . . . . . . . . . . . . . . . . 129
Programmed I/O timing. . . . . . . . . . . . . . . . . 130
Host Controller programmed I/O timing . . . . 130
Peripheral Controller programmed I/O timing 131
DMA timing . . . . . . . . . . . . . . . . . . . . . . . . . . 133
Host Controller single-cycle DMA timing . . . 133
Host Controller burst mode DMA timing . . . . 134
Peripheral Controller single-cycle DMA
19.1.1
19.1.2
19.2
19.2.1
19.2.2
19.2.3
timing (8237 mode). . . . . . . . . . . . . . . . . . . . 135
Peripheral Controller single-cycle DMA
read timing in DACK-only mode . . . . . . . . . . 135
Peripheral Controller single-cycle DMA
write timing in DACK-only mode . . . . . . . . . . 136
Peripheral Controller burst mode DMA
19.2.4
19.2.5
19.2.6
timing . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 137
20
Package outline . . . . . . . . . . . . . . . . . . . . . . . 138
21
Soldering . . . . . . . . . . . . . . . . . . . . . . . . . . . . 140
Introduction to soldering . . . . . . . . . . . . . . . . 140
Wave and reflow soldering . . . . . . . . . . . . . . 140
Wave soldering . . . . . . . . . . . . . . . . . . . . . . . 140
Reflow soldering . . . . . . . . . . . . . . . . . . . . . . 141
21.1
21.2
21.3
21.4
22
23
24
Abbreviations. . . . . . . . . . . . . . . . . . . . . . . . . 142
References . . . . . . . . . . . . . . . . . . . . . . . . . . . 143
Revision history. . . . . . . . . . . . . . . . . . . . . . . 144
25
Legal information. . . . . . . . . . . . . . . . . . . . . . 146
Data sheet status . . . . . . . . . . . . . . . . . . . . . 146
Definitions. . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Disclaimers . . . . . . . . . . . . . . . . . . . . . . . . . . 146
Trademarks. . . . . . . . . . . . . . . . . . . . . . . . . . 146
25.1
25.2
25.3
25.4
Please be aware that important notices concerning this document and the product(s)
described herein, have been included in section ‘Legal information’.
© NXP B.V. 2007.
All rights reserved.
For more information, please visit: http://www.nxp.com
For sales office addresses, please send an email to: salesaddresses@nxp.com
Date of release: 8 May 2007
Document identifier: ISP1362_5
相关型号:
ISP14EP15LM
SOT-223 封装型 100 V OptiMOS™ P 沟道 MOSFET 是面向电池管理、负载开关和反极性保护应用的全新技术。P 沟道器件的主要优势在于降低中低功率应用的设计复杂度。此类产品可轻松连接 MCU,开关速度快且雪崩能力强,尤其适合质量要求高的应用。器件支持逻辑电平,具备较宽的 RDS(on) 范围和低 Qg,低负载下效率较高。
INFINEON
ISP1504A1ET,118
IC LINE TRANSCEIVER, PBGA36, 3.50 X 3.50 MM, 0.80 MM HEIGHT, ROHS COMPLIANT, PLASTIC, SOT-912-1, TFBGA-36, Line Driver or Receiver
NXP
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