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PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

Burr-Brown Audio

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

PCM186x 4 通道或 2 通道 192kHz 音频 ADC

1 特性

2 应用

1

•

高 SNR 性能：

•

家庭影院和电视

语音控制设备

蓝牙^®扬声器

–

110dB SNR (PCM1861/63/65)

103dB SNR (PCM1860/62/64)

麦克风阵列处理器

•

ADC 采样率 (f_S) = 8kHz 至 192kHz

提供多达四个独立的 ADC 通道

单端 2.1V_RMS满标量程 (FS) 输入

差分 4.2V_RMSFS 输入

3 说明

PCM186x 系列（PCM1860、PCM1861、

PCM1862、PCM1863、PCM1864 和 PCM1865）音

频前端器件采用了新的音频功能集成方法，从而能够轻

松地符合欧洲生态设计法规，同时能够以更低的成本实

现高性能终端产品。PCM186x 支持 3.3V 单电源运

行，并以小封装提供集成的可编程增益放大器

(PGA)；利用该配置，能够以更低的成本实现更小且更

智能的产品。

硬件 (HW) 控制：PCM1860/61

软件 (SW) 控制（I²C 或 SPI）：

PCM1862/63/64/65

•

支持多达四个数字麦克风

（软件控制的器件）

可编程增益放大器 (PGA)：

–

固定增益：0dB、12dB、32dB

(PCM1860/61)

PCM186x 音频前端支持从较小的 mV 级麦克风输入到

2.1V_RMS线路输入的单端输入电平，无需外部电阻分压

器。前端混频器 (MIX)、多路复用器 (MUX) 和 PGA 还

支持差分 (Diff)、伪差分和单端 (SE) 输入，从而使这

些器件成为需要干扰抑制的产品的理想接口。

PCM186x 集成了许多可以辅助或替代某些 DSP 功能

的系统级功能。

–

软件控制的增益：–12dB 至 +32dB

(PCM1862/63/64/65)

•

集成高性能音频 PLL

3.3V 单电源运行

3.3V 时的功耗：

–

< 85mW (PCM1860/61/62/63)

< 145mW (PCM1864/65)

集成的带隙电压基准可提供出色的 PSRR，因此可能

无需专用的模拟 3.3V 电源轨。

•

用于音频系统唤醒和睡眠的 Energysense 音频内容

检测器

•

主/从音频接口

器件信息⁽¹⁾

自动 PGA 削波抑制控制

所有器件之间具有 PCB 封装兼容性

器件型号

PCM186x

封装

封装尺寸（标称值）

TSSOP (30)

7.80mm x 4.40mm

(1) 如需了解所有可用封装，请参阅数据表末尾的封装选项附录。

简化应用示意图

IN

MIC

DOUT

BCK

DOUT

TMS320C5535

PCM5121

TPA3116

PCM186x

LRCK

SW mix

IN

LINE

BCK

LRCK

PCM5100

1

An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications,

intellectual property matters and other important disclaimers. PRODUCTION DATA.

English Data Sheet: SLAS831

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

10.1 Application Information.......................................... 70

10.2 Typical Applications .............................................. 75

11 Power Supply Recommendations ..................... 79

11.1 Power-Supply Distribution and Requirements ...... 79

11.2 1.8-V Support........................................................ 79

11.3 Brownout Conditions............................................. 79

11.4 Power-Up Sequence............................................. 80

11.5 Lowest Power-Down Modes ................................. 80

11.6 Power-On Reset Sequencing Timing Diagram .... 81

11.7 Power Connection Examples................................ 82

11.8 Fade In.................................................................. 83

12 Layout................................................................... 84

12.1 Layout Guidelines ................................................. 84

12.2 Layout Example .................................................... 85

13 Register Maps...................................................... 85

13.1 Register Map Description...................................... 85

13.2 Register Map Summary ........................................ 86

13.3 Page 0 Registers ................................................. 89

13.4 Page 1 Registers ............................................... 129

13.5 Page 3 Registers ............................................... 132

13.6 Page 253 Registers ........................................... 133

14 器件和文档支持 ................................................... 134

14.1 文档支持.............................................................. 134

14.2 相关链接.............................................................. 134

14.3 接收文档更新通知 ............................................... 134

14.4 社区资源.............................................................. 134

14.5 商标..................................................................... 134

14.6 静电放电警告....................................................... 134

14.7 Glossary.............................................................. 134

15 机械、封装和可订购信息..................................... 135

1

2

3

4

5

6

7

特性.......................................................................... 1

应用.......................................................................... 1

说明.......................................................................... 1

修订历史记录 ........................................................... 2

Device Comparison Table..................................... 7

Pin Configuration and Functions......................... 8

Specifications....................................................... 12

7.1 Absolute Maximum Ratings .................................... 12

7.2 ESD Ratings............................................................ 12

7.3 Recommended Operating Conditions..................... 12

7.4 Thermal Information................................................ 12

7.5 Electrical Characteristics: PGA and ADC AC

Performance............................................................. 13

7.6 Electrical Characteristics: DC ................................. 14

7.7 Electrical Characteristics: Digital Filter.................... 16

7.8 Timing Requirements: External Clock..................... 16

7.9 Timing Requirements: I²C Control Interface .......... 17

7.10 Timing Requirements: SPI Control Interface ....... 18

7.11 Timing Requirements: Audio Data Interface for

Slave Mode .............................................................. 19

7.12 Timing Requirements: Audio Data Interface for

Master Mode ............................................................ 20

7.13 Typical Characteristics.......................................... 21

Parameter Measurement Information ................ 23

Detailed Description ............................................ 25

9.1 Overview ................................................................. 25

9.2 Functional Block Diagrams ..................................... 25

9.3 Features Description .............................................. 28

9.4 Device Functional Modes........................................ 60

9.5 Programming........................................................... 62

8

9

10 Application and Implementation........................ 70

4 修订历史记录

注：之前版本的页码可能与当前版本有所不同。

Changes from Revision C (August 2014) to Revision D

Page

•

已添加在该数据表中添加了 PCM1860、PCM1862 和 PCM1864 以及相关的内容；这些器件以前位于一个单独的数

据表 (SLASE55A) 中 .............................................................................................................................................................. 1

•

已更改为清楚起见，更改了标题 ............................................................................................................................................ 1

已更改更改了特性项目以包含新的器件................................................................................................................................. 1

已添加添加了特性项目以阐明硬件和软件控制的器件........................................................................................................... 1

已更改将应用中的“汽车音响主机”更改成了“语音控制设备”................................................................................................... 1

已更改更改了说明部分文本以阐明 3.3V 电源、集成 PGA 和其他前端特性 ........................................................................ 1

已更改更改了简化应用图，以将以前的两个图合并为一个图 ................................................................................................. 1

Deleted Typ Performance (3.3-V Supply, –1 dB-FS Input) table; redundant content ............................................................ 7

Changed Device Comparison Table; updated for clarity........................................................................................................ 7

Changed reference voltage output dcoupling point typical value from 0.5 VCC to 0.5 AVDD in VREF pin description........ 9

Changed XO (pin 9) type from "—" to "Digital output" in both Pin Functions tables ............................................................. 9

Changed "latch enable" to "word clock" in LRCK pin description ......................................................................................... 9

Changed reference voltage output dcoupling point typical value from 0.5 VCC to 0.5 AVDD in VREF pin description ..... 11

Changed "latch enable" to "word clock" in LRCK pin description ....................................................................................... 11

2

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

www.ti.com.cn

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

修订历史记录 (接下页)

•

Added operating ambient temperature and junction temperature to Absolute Maximum Ratings table.............................. 12

Changed ground voltage differences range from "AGND, DGND" to "AGND to DGND" ................................................... 12

Changed storage temperature max value from 125°C to 150°C.......................................................................................... 12

Changed CDM value from ±1500 V to ±750 V..................................................................................................................... 12

Changed "Operating junction temperature range" to "Operating ambient temperature, T_A" in Recommended

Operating Conditions table ................................................................................................................................................... 12

•

Changed Thermal Characteristics table to Thermal Information table................................................................................. 12

Changed Electrical Characteristics: Primary PGA and ADC performance to include secondary ADC performance

data, and deleted separate Electrical Characteristics: Secondary ADC Performance table ............................................... 13

•

Added new table note to clarify test condition at 32-dB PGA gain....................................................................................... 13

Added min value of 85 dB to input channel signal-to-noise ratio for 32 dB ......................................................................... 13

Changed input channel signal-to-noise ratio for 32 dB typical value from 93 dB to 90 dB.................................................. 13

Added min value of –76 dB to input channel THD+N, differential input for 32 dB .............................................................. 13

Deleted "per input pin" and "out of phase" from full-scale voltage input parameter in Electrical Characteristics ................ 13

Changed input channel signal-to-noise ratio, single-ended input value for PCM1865 from 110 dB to 106 dB;

differential conditions used previously.................................................................................................................................. 13

•

Changed "Energysense Detection Threshold" to "Default Energysense Signal Detection Threshold" in Electrical

Characteristics, Secondary ADC Performance .................................................................................................................... 13

•

Changed secondary ADC sampling rate from "same as audio sampling rate" to min of 8 kHz and max of 192 kHz ......... 13

Changed Electrical Characteristics, DC conditions from master to slave mode; system clock from 256 × f_Sto 512 x f_S.... 14

Changed POWER section of the Electrical Characteristics, DC; updated section structure for clarity................................ 14

Deleted all rows with XTAL as condition; not required for normal operation ....................................................................... 14

Deleted all rows with Powerdown; not a valid operating mode ........................................................................................... 14

Changed AVDD current typ value for 2-channel, 3.3-V, active mode from 16 mA to 18 mA .............................................. 14

Changed Total power value for 2-channel, 3.3 V, sleep mode from 24 mW to 17.6 mW.................................................... 14

Changed DVDD current for 2-channel, 3.3 V, standby mode from 353 µA to 0.015 mA..................................................... 14

Changed Total power for 2-channel, 3.3 V, standby mode for software device from 0.59 mW to 0.64 mW ...................... 14

DVDD current for 2-channel, 3.3 V and 1.8 V active mode typ value from 10 µA to 0.015 mA .......................................... 14

Changed Total power for 2-channel, 3.3 V and 1.8 V active mode from 68 mW to 69.2 mW............................................. 14

Changed Total power for 4-channel, 3.3 V, active mode from 145 mW to 135.3 mW ....................................................... 14

Changed Total power for 4-channel, 3.3 V and 1.8 V, active mode from 128 mW to 117.3 mW........................................ 15

Deleted redundant text "Valid with recommended values on analog rails (AVDD, VREF, and so on)" from PSRR ........... 15

Changed "HPF frequency response" to "HPF –3-dB cutoff frequency" in Electrical Characteristics: Digital Filter.............. 16

Added maximum BCK frequency rows to Timing Requirements, External Clock table ....................................................... 16

Changed all FFT plot X axes from log scale to linear scale................................................................................................. 21

Added Figure 7 ..................................................................................................................................................................... 21

Changed Figure 9................................................................................................................................................................. 21

Deleted previous Figure 11 and Figure 12........................................................................................................................... 21

Added Figure 11 ................................................................................................................................................................... 21

Added Figure 13 ................................................................................................................................................................... 22

Added Figure 15 ................................................................................................................................................................... 22

Changed Overview section for clarity................................................................................................................................... 25

Deleted Terminology section; moved content to Overview section...................................................................................... 25

Added Feature Description section, and moved existing content here................................................................................ 28

Changed text in Analog Front End section for clarity........................................................................................................... 28

Changed Mic Bias section; internal resistor is a terminating resistor................................................................................... 29

3

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

修订历史记录 (接下页)

•

Deleted Figure 21 and Figure 22 from Mic Bias section ...................................................................................................... 29

Added note stating that clocks are required to be running in order to change PGA in the Programmable Gain

Amplifier section ................................................................................................................................................................... 31

•

Added text to clarify digital PGA update use in Programmable Gain Amplifier section ....................................................... 31

Changed note to clarify that the full scale moves to 4.2 V_RMSwhen in differential mode at the end of the

Programmable Gain Amplifier section.................................................................................................................................. 31

•

Added new paragraph to end of Stereo PCM Sources section............................................................................................ 33

Changed Figure 33; clock tree updated and corrected ........................................................................................................ 36

Added new paragraph to target ADC, DSP1 and DSP2 clock rates in Device Clock Distribution and Generation section 36

Changed Clock Configuration and Selection section; relevant to hardware-controlled devices only .................................. 37

Added new paragraph regarding register MST_SCK_SRC to Clock Sources for Software-Controlled Devices section .... 37

Added note ("In Master Mode on..") to Clock Sources for Software-Controlled Devices section ........................................ 38

Changed Table 7; updated descriptions for clarity............................................................................................................... 38

Changed "CLK_DIV_MST_SCK" to "CLK_DIV_SCK_BCK" and "CLK_DIV_MST_BCK" to "CLK_DIV_BCK_LRCK"

in Table 7.............................................................................................................................................................................. 38

•

Changed Figure 34; clock tree updated and corrected ........................................................................................................ 38

Added "Target Clock Rates for ADC, DSP#1 and DSP#2" section ..................................................................................... 39

Changed Table 9; corrected PLL values by increasing P and R by 1, and corrected DSP1 clock divider values .............. 40

Changed Table 10; corrected PLL values by increasing P and R by 1, and corrected DSP1 clock divider values ............ 41

Changed Table 12; corrected PLL values by increasing P and R by 1, and corrected typo in DSP2 column title.............. 43

Changed Table 13; corrected PLL values by increasing P and R by 1, and corrected typo in DSP2 column title.............. 44

Added text "The clock tree must also be set..." to Software-Controlled Devices ADC Non-Audio MCK PLL Mode

section .................................................................................................................................................................................. 45

•

Changed PLL condition for D = 0000 to show 1 MHz ≤ (PLLCKIN / P) ≤ 20 MHz and 1 ≤ J ≤ 63...................................... 45

Changed PLL condition for D ≠ 0000 to show 6.667 MHz ≤ (PLLCLKIN / P) ≤ 20 MHz and 4 ≤ J ≤ 11 ............................. 45

Changed register numbers in Software-Controlled Devices Manual PLL Calculation section to align with the register

numbers in Table 14............................................................................................................................................................. 46

•

Changed Clock Halt and Error section; clock error moved to Clocks section, and interrupt capability deleted................... 46

Added Changing Clock Sources and Sample Rates section ............................................................................................... 47

Changed Secondary ADC: Energysense and Analog Control section; energysense signal detection not available in

active mode .......................................................................................................................................................................... 48

•

Changed text from "control signals up to 1.65 V" to "control signals up to 4.3 V" in the Secondary ADC Analog Input

Range section....................................................................................................................................................................... 49

Changed section title from "Secondary ADC DC Level Change Detection" to "Secondary ADC Controlsense DC

Level Change Detection"...................................................................................................................................................... 49

Added text to the Secondary ADC Controlsense DC Level Change Detection section; controlsense is available in

both active and sleep modes................................................................................................................................................ 49

Added details to the Secondary ADC Controlsense DC Level Change Detection section regarding how to read

simple 8-bit values from the secondary ADC ....................................................................................................................... 49

•

Added new second paragraph to Energysense section....................................................................................................... 50

Changed paragraph after Figure 38 in Energysense Signal Loss Flag section for clarity ................................................... 51

Changed Digital Decimation Filters section; clarified two different HPFs in the device....................................................... 53

Changed text to clarify digital PGA update use in Digital PGA section................................................................................ 53

Changed Interrupt Controller section; deleted clock error as an interrupt source................................................................ 56

Changed text after Figure 44 in Interrupt Controller section; clarified INT pins all have same logic signal......................... 56

Added short description in the DIN Toggle Detection section.............................................................................................. 56

Added Clearing Interrupts section ........................................................................................................................................ 56

Changed Digital Audio Output 2 Configuration section; DOUT2 not available in TDM mode, only for 4-ch devices .......... 58

4

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

www.ti.com.cn

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

修订历史记录 (接下页)

•

Added Time Division Multiplex (TDM Support) section........................................................................................................ 58

Changed location of timing diagrams to Specifications section, and deleted Interface Timing section............................... 59

Changed text in Bypassing the Internal LDO to Reduce Power Consumption section to clarify TDM mode with 1.8-V

IOVDD operation .................................................................................................................................................................. 61

•

Added text "The I²C control port.." to the I²C Interface section............................................................................................ 64

Changed pin numbers in Table 22 from "15, 16, 14" to "23, 24, 25" ................................................................................... 64

Added Real World Software Configuration using EnergySense and Controlsense section................................................. 65

Added more detail to Programming DSP Coefficients on Software-Controlled Devices section, and moved to new

location ................................................................................................................................................................................. 68

•

已添加 Dual PCM186x TDM Functionality section ............................................................................................................... 73

已添加 new paragraph to end of Analog Front-End Circuit For Single-Ended, Line-In Applications section....................... 74

已更改 1.8-V Support section; clarified that both IOVDD and LDO must be driven with 1.8 V in 1.8-V mode .................... 79

已添加 Brownout Conditions section .................................................................................................................................... 79

已添加 test condition to step 3 in Power Up Sequence section; (PLL requires < 250 µs)................................................... 80

已更改 Layout section for clarity .......................................................................................................................................... 84

已删除 old Figure 67, PCM1865 EVM Signal Partitioning; redundant, and same information shown in Figure 74 ............ 84

已添加 Figure 75................................................................................................................................................................... 85

已更改 "0xFF" to "0xFE" in last sentence of Register Map Description section................................................................... 85

Changed values for register 3, bits 6-0; changed from "RSV" to correct bit names ........................................................... 86

Changed bits 4 and 3 from 1 and 0 to RSV, respectively, in register 27 ............................................................................. 86

Changed register 44 (0x2C) from reserved ("RSV") to actual bit names............................................................................. 87

Changed registers 52 and 53 to registers 51 and 52, respectively...................................................................................... 87

Changed TX_WLEN bit option 00 description from "Reserved" to "32-bit" in Page 0, register 11 ...................................... 95

Changed GPIO0_FUNC for 001 from "SPI MISO (Out:Default)" to "Digital MIC Input 0 (In)" and for 010 from

"RESERVED" to "SPI MISO (Out)" in register 16 ................................................................................................................ 98

•

Changed "DPGA" to "APGA" in description column for bits 3, 2, 1, and 0 in register 25 .................................................. 104

Changed DIV_NUM default value in page 0, register 33 from "000 0001" to "000 0000" ................................................. 106

Changed names and descriptions of master mode clock dividers in registers 37, 38, and 39 for clarity .......................... 108

Changed "Divider" to "Multiplier" in R[3:0] description for register 42................................................................................ 110

Changed values for R[3:0] from 1, 1/2, 1/3, 1/4, and 1/16 to 1, 2, 3, 4, and 16, respectively .......................................... 110

Changed "Divider" to "Multiplier" in J[5:0] description for register 43 ................................................................................ 111

Changed "Divider" to "Multiplier" in D_LSB[7:0] description for register 44....................................................................... 111

Changed "Divider" to "Multiplier" in D_MSB[5:0] description for register 45...................................................................... 111

Changed register 52 to register 51..................................................................................................................................... 114

Changed register 53 to register 52..................................................................................................................................... 115

Changed bit 3 from CLKERR to RSV in register 96........................................................................................................... 123

Deleted bit 3 from CLKERR to RSV in register 97............................................................................................................. 124

Changed default values in page 1: register 1 for bits 4, 2, 1, and 0 from "1" to "0", and updated descriptions for clarity. 129

Changes from Revision B (March 2014) to Revision C

Page

•

已更改在整个数据表中将“端子”更改成了“引脚”...................................................................................................................... 1

已添加添加了有关可订购产品附录的表注.............................................................................................................................. 1

已删除从“器件信息”表的部件号中删除了封装符号................................................................................................................. 1

已更改将“-1dBFS 下的 THD+N”更改成了“-1dBFS 下的差分输入”......................................................................................... 1

Corrected pin numbers in Pin Description table..................................................................................................................... 9

5

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

•

Corrected pin numbers in Pin Description table - pin 11 is LDO and pin 12 is DGND ........................................................ 11

Changed Energysense Accuracy typ from 1dB to 3dB ........................................................................................................ 13

Changed Secondary ADC Accuracy from 10 bits to 12 bits ............................................................................................... 13

Added Parameter Measurement Information section .......................................................................................................... 23

已添加 default values for reserved registers ........................................................................................................................ 85

Changes from Revision A (March 2014) to Revision B

Page

•

已添加添加了 PCM1861 示例系统图..................................................................................................................................... 1

已更改更改了典型性能表 ....................................................................................................................................................... 1

Updated Page 3 and Page 253 registers ............................................................................................................................ 85

Changes from Original (March 2014) to Revision A

Page

•

已更改将“预告信息”更改成了“生产数据”状态 ......................................................................................................................... 1

6

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

www.ti.com.cn

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

5 Device Comparison Table

PART NUMBER

PCM1860

PCM1861

PCM1862

PCM1863

PCM1864

PCM1865

I²C or SPI

Control method

H/W

Differential

SNR performance A weighted

data

103 dB

110 dB

103 dB

110 dB

103 dB

110 dB

Analog front end

2.1 V_RMSMUX with fixed PGA gains

2

2.1 V_RMSMUX, MIX, PGA and auxiliary ADC

Simultaneous channel

capability

2

4

Energysense signal detect

Energysense signal loss

Controlsense

Yes (fixed threshold)

Yes (programmable threshold)

Yes

No

Interrupt controller

Digital microphone support

Clock PLL

No

Yes (2)

Yes (4)

BCK to generate internal master clock

Fully programmable

0.22 mW

Lowest power standby mode

(1.8-V IOVDD)

7.96 mW

Digital mixing with digital and

analog inputs

No

Yes

Left-justified, I²S

Left-justified, right-justified, I²S, TDM

Digital output formats

Interrupt capabilities

Energysense signal loss and detect, controlsense, post PGA clipping, RX digital

Energysense signal detect

toggle

7

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

6 Pin Configuration and Functions

DBT Package: PCM1860 and PCM1861

30-Pin TSSOP

Top View

VINL2/VIN1M

VINR2/VIN2M

VINL1/VIN1P

VINR1/VIN2P

Mic Bias

VREF

1

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

VINR3/VIN3P

VINL3/VIN4P

VINR4/VIN3M

VINL4/VIN4M

MD0

2

3

4

5

6

MD1

AGND

7

MD3

AVDD

8

MD2

XO

9

MD4

XI

10

11

12

13

14

15

MD5

LDO

MD6

DGND

INT

DVDD

DOUT

IOVDD

BCK

SCKI

LRCK

Not to scale

8

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

www.ti.com.cn

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

Pin Functions: PCM1860 and PCM1861

TYPE

DESCRIPTION

NO.

1

NAME

VINL2/VIN1M

VINR2/VIN2M

VINL1/VIN1P

VINR1/VIN2P

Mic Bias

Analog input

Power

Analog input 2, L-channel (or differential M input for input 1)

Analog input 2, R-channel (or differential M input for input 2)

Analog input 1, L-channel (or differential P input for input 1)

Analog input 1, R-channel (or differential P input for input 2)

Microphone bias output

2

3

4

5

Power

Reference voltage output decoupling point (typically, 0.5 AVDD). Connect 1-µF capacitor

from this pin to AGND.

6

7

8

VREF

AGND

AVDD

Power

Analog ground

Analog power supply (typically, 3.3 V). Connect 0.1-µF and 10-µF capacitors from this pin

to AGND.

9

XO

XI

Digital output

Digital input

Power

Crystal oscillator output

10

Crystal oscillator input or master clock input (1.8-V CMOS signal)

Internal low-dropout regulator (LDO) decoupling output, or external 1.8-V input to bypass

LDO. Connect 0.1-µF and 10-µF capacitors from this pin to DGND.

11

12

13

LDO

DGND

DVDD

Power

Digital ground

Digital power supply (typically, 3.3 V). Connect 0.1-µF and 10-µF capacitors from this pin to

DGND.

14

15

IOVDD

SCKI

Power

Power supply for I/O voltages (typically, 3.3 V or 1.8 V).

CMOS level (3.3 V) master clock input

Digital input

Digital

input/output

Audio data word clock (left right clock) input/output⁽¹⁾

16

17

LRCK

BCK

Digital

input/output

Audio data bit clock input/output⁽¹⁾

18

19

DOUT

INT

Digital output

Audio data digital output

Analog output Interrupt output (for analog input detection). Pull high for active mode, pull low for idle.

Analog input

Analog MUX and gain selection using MD6, MD5, and MD2 pins, respectively:

000: SE Ch 1 (VINL1 and VINR1)

001: SE Ch 2 (VINL2 and VINR2)

010: SE Ch 3 (VINL3 and VINR3)

20

MD6

011: SE Ch 4 (VINL4 and VINR4)

100: SE Ch 4 with 12-dB gain

101: SE Ch 4 with 32-dB gain

110: Diff Ch 1 (VIN1P and VIN1M, VIN2P and VIN2M)

111: Diff Ch 2 (VIN3P and VIN3M, VIN4P and VIN4M) with 12-dB gain

21

22

23

24

MD5

MD4

MD2

MD3

Analog input

Digital Input

Analog input

Analog MUX and gain selection (see MD6 pin for description)

Audio format: high = left-justified, low = I²S

Analog MUX and gain selection (see MD6 pin for description)

Filter select: 0 = FIR decimation filter, 1 = IIR low latency decimation filter

Audio interface mode selection using MD1 and MD0 pins, respectively:

00: Slave mode, 256 × f_S, 384 × f_S, 512 × f_Sautodetect

01: Master mode (512 × f_S)

25

MD1

10: Master mode (384 × f_S)

11: Master mode (256 × f_S)

26

27

28

29

30

MD0

Analog input

Audio interface mode selection (see MD1 pin for description)

Analog input 4, L-channel (or differential M input for input 4)

Analog input 4, R-channel (or differential M input for input 3)

Analog input 3, L-channel (or differential P input for input 4)

Analog input 3, R-channel (or differential P input for input 3)

VINL4/VIN4M

VINR4/VIN3M

VINL3/VIN4P

VINR3/VIN3P

(1) Schmitt trigger input with internal pull-down (50 kΩ, typically).

9

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DBT Package: PCM1862, PCM1863, PCM1864, and PCM1865

30-Pin TSSOP

Top View

VINL2/VIN1M

VINR2/VIN2M

VINL1/VIN1P

VINR1/VIN2P

Mic Bias

VREF

1

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

VINR3/VIN3P

VINL3/VIN4P

VINR4/VIN3M

VINL4/VIN4M

MD0

2

3

4

5

6

MS/AD

AGND

7

MC/SCL

AVDD

8

MOSI/SDA

MISO/GPIO0/DMIN2

GPIO1/INTA/DMIN

GPIO2/INTB/DMCLK

GPIO3/INTC

DOUT

XO

9

XI

10

11

12

13

14

15

LDO

DGND

DVDD

IOVDD

BCK

SCKI

LRCK

Not to scale

NOTE: The DMIN2 option for pin 22 is only available on the PCM1864 and PCM1865 devices.

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Pin Functions: PCM1862, PCM1863, PCM1864, and PCM1865

TYPE

DESCRIPTION

NO.

1

NAME

VINL2/VIN1M

VINR2/VIN2M

VINL1/VIN1P

VINR1/VIN2P

Mic Bias

Analog input

Power

Analog input 2, L-channel (or differential M input for input 1)

Analog input 2, R-channel (or differential M input for input 2)

Analog input 1, L-channel (or differential P input for input 1)

Analog input 1, R-channel (or differential P input for input 2)

Microphone bias output

2

3

4

5

6

Power

Reference voltage output decoupling point (typically, 0.5 AVDD). Connect 1-µF

capacitor from this pin to AGND.

VREF

AGND

AVDD

7

8

Power

Analog ground

Analog power supply (typically, 3.3 V). Connect 0.1-µF and 10-µF capacitors from

this pin to AGND.

9

XO

XI

Digital output

Digital input

Power

Crystal oscillator output

10

11

Crystal oscillator input or master clock input (1.8-V CMOS signal)

Internal LDO decoupling output, or external 1.8-V input to bypass LDO. Connect

0.1-µF and 10-µF capacitors from this pin to DGND.

LDO

12

13

DGND

DVDD

Power

Digital ground

Digital power supply (typically, 3.3 V). Connect 0.1-µF and 10-µF capacitors from

this pin to DGND.

14

15

16

17

18

19

IOVDD

SCKI

Power

Power supply for I/O voltages (typically, 3.3 V or 1.8 V).

CMOS level (3.3 V) master clock input

Digital input

LRCK

Digital input/output Audio data world clock (left right clock) input/output⁽¹⁾

Digital input/output Audio data bit clock input/output⁽¹⁾

BCK

DOUT

Analog output

Audio data digital output

GPIO3/INTC

Digital input/output GPIO 3 or interrupt C

20

21

22

GPIO2/INTB/DMCLK Digital input/output GPIO 2, interrupt B, or digital microphone clock output

GPIO1/INTA/DMIN

Digital input/output GPIO 1, interrupt A, or digital microphone input

Digital input/output In SPI mode: master in, slave out

MISO/GPIO0/DMIN2

In I²C mode: GPIO0 (or DMIN2 for PCM1864 and PCM1865 only)

23

24

25

Digital input/output In SPI mode: master out, slave in

In I²C mode: SDA

MOSI/SDA

MC/SCL

MS/AD

Digital input

In SPI mode: serial bit clock

In I²C mode: serial bit clock

Digital input

In SPI mode: chip select

In I²C mode: address pin

26

27

28

29

30

MD0

Digital input

Analog input

Control method select pin: I²C (tied low or not connected) or SPI (tied high)

Analog input 4, L-channel (or differential M input for input 4)

Analog input 4, R-channel (or differential M input for input 3)

Analog input 3, L-channel (or differential P input for input 4)

Analog input 3, R-channel (or differential P input for input 3)

VINL4/VIN4M

VINR4/VIN3M

VINL3/VIN4P

VINR3/VIN3P

(1) Schmitt trigger input with internal pull-down (50 kΩ, typically).

11

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7 Specifications

7.1 Absolute Maximum Ratings

over operating temperature (unless otherwise noted)⁽¹⁾

MIN

–0.3

–1.7

–40

MAX

3.9

UNIT

AVDD to AGND

Supply voltage

DVDD to DGND

IOVDD to DGND

AGND to DGND

Digital input to DGND

XI to DGND

3.9

V

3.9

Ground voltage differences

Digital input voltage

0.3

V

IOVDD + 0.3

2.1

Analog input voltage

VINxx to AGND

Operating ambient, T_A

Junction, T_J

5.0

125

Temperature

–40

150

°C

Storage, T_stg

–40

150

(1) Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. These are stress ratings

only and functional operation of the device at these or any other conditions beyond those indicated under Recommended Operating

conditions is not implied. Exposure to absolute-maximum-rated conditions for extended periods may affect device reliability.

7.2 ESD Ratings

VALUE

UNIT

Human-body model (HBM), per ANSI/ESDA/JEDEC JS-001⁽¹⁾

±2000

V_(ESD)

Electrostatic discharge

V

Charged-device model (CDM), per JEDEC specification JESD22-

C101⁽²⁾

±750

(1) JEDEC document JEP155 states that 500-V HBM allows safe manufacturing with a standard ESD control process.

(2) JEDEC document JEP157 states that 250-V CDM allows safe manufacturing with a standard ESD control process.

7.3 Recommended Operating Conditions

MIN

NOM

MAX

UNIT

POWER

AVDD

Analog supply voltage to AGND

Digital supply voltage to DGND

3.0

3.3

1.8

3.3

3.6

V

DVDD

at 1.8 V

at 3.3 V

1.62

3.0

1.98

3.6

IOVDD IO supply voltage to DGND

LDO pin voltage to DGND

LDO

IOVDD – 0.3

IOVDD

IOVDD + 0.3

V

(LDO is an input when using external 1.8-V power supply)

TEMPERATURE

T_AOperating ambient temperature

–40

125

°C

7.4 Thermal Information

PCM186x

THERMAL METRIC⁽¹⁾

DBT (TSSOP)

30 PINS

79.6

UNIT

R_θJA

R_θJC(top)

R_θJB

ψ_JT

Junction-to-ambient thermal resistance

°C/W

Junction-to-case (top) thermal resistance

Junction-to-board thermal resistance

15.1

33.1

Junction-to-top characterization parameter

Junction-to-board characterization parameter

0.4

ψ_JB

32.6

(1) For more information about traditional and new thermal metrics, see the Semiconductor and IC Package Thermal Metrics application

report.

12

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

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ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

7.5 Electrical Characteristics: PGA and ADC AC Performance

all specifications at T_A= 25°C, AVDD = 3.3 V, DVDD = 3.3 V, IOVDD = 3.3 V, master mode, single-speed mode, f_S= 48 kHz,

system clock = 256 × f_S, and 24-bit data (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

PRIMARY PGA AND ADC

PCM1860

PCM1862

PCM1864

97

103

110

dB

0-dB PGA gain, –60-dB input signal,

master mode at Diff input

Input channel signal-to-noise ratio,

differential input

PCM1861

PCM1863

PCM1865

32-dB PGA gain⁽¹⁾, –86-dB input signal, master mode at

Diff input

85

–85

–76

90

–93

dB

0-dB PGA gain, –1-dB input signal, master mode at Diff

input

Input channel THD+N, differential

input

32-dB PGA gain, –33-dB input signal, master mode at

Diff input

–84

L channel to R channel separation line

input

0-dB PGA gain, –1-dB input signal, master mode

20-dB PGA gain, –1-dB input signal, master mode

0-dB PGA gain, –1-dB input signal, master mode

20-dB PGA gain, –1-dB input signal, master mode

–105

L channel to R channel separation mic

input

L1 channel to L2 channel separation

line input

R1 channel to R2 channel separation

line input

L1 channel to L2 channel separation

mic input

R1 channel to R2 channel separation

mic input

20-dB PGA gain, –1-dB input signal, master mode

–12 to +12 dB (1-dB step), 20 dB, and 32 dB

Range of analog PGA

–12⁽²⁾

32

dB

Accuracy of PGA + ADC

0.5

Matching between PGA + ADCs on-

chip

0.05

dB

Single-ended mode

2.1

4.2

V_RMS

Full-scale voltage input

Differential mode (2.1 V_RMSper pin)

PCM1860

PCM1862

PCM1864

103

106

dB

0-dB PGA gain, –60-dB input signal,

master mode at SE input

Input channel signal-to-noise ratio,

single-ended input

PCM1861

PCM1863

PCM1865

32-dB PGA gain, –92-dB input signal, master mode at

SE input

75

87

68

dB

0-dB PGA gain, –1-dB input signal, master mode at SE

input

Input channel THD+N, single-ended

input

32-dB PGA gain, –33-dB input signal, master mode at

SE input

PCM1864 and PCM1865

10

20

Input impedance per analog input pin

kΩ

PCM1860, PCM1861, PCM1862, and PCM1863

Differential input, 1-kHz signal on both pins and measure

level at output

CMRR Common-mode rejection ratio

56

dB

SECONDARY ADC PERFORMANCE

Default Energysense signal detection

threshold

At 1 kHz

–57

dBFS

Energysense signal bandwidth

Energysense accuracy⁽²⁾

10

3

kHz

dB

Secondary ADC accuracy

Secondary ADC sampling rate

12

bits

kHz

8

192

(1) 32-dB gain when using differential mode inputs is only available in SW-controlled devices.

(2) Specified by design.

13

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7.6 Electrical Characteristics: DC

all specifications at T_A= 25°C, AVDD = 3.3 V, DVDD = 3.3 V, IOVDD = 3.3 V, slave mode, single-speed mode, f_S= 48 kHz,

system clock = 512 × f_S, and 24-bit data (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

POWER

AVDD current

18

0.01

6.2

mA

mW

mA

mW

mA

mW

mA

mW

mA

mW

mA

mW

mA

mW

mA

mW

mA

mW

mA

mW

mA

mW

mA

mW

DVDD current

IOVDD current

Total Power

2-channel device, AVDD = DVDD = IOVDD = 3.3 V,

active mode

80

AVDD current

DVDD current

IOVDD current

Total power

2.8

0.353

2.2

2-channel device, AVDD = DVDD = IOVDD = 3.3 V,

sleep mode

17.6

0.06

0.015

0.12

0.64

1.3

AVDD current

DVDD current

IOVDD current

Total power

2-channel device, AVDD = DVDD = IOVDD = 3.3 V,

standby mode for software device

AVDD current

DVDD current

IOVDD current

Total power

0.353

1.6

2-channel device, AVDD = DVDD = IOVDD = 3.3 V,

standby mode for hardware device

10.725

18

AVDD current

DVDD current

IOVDD and LDO Current

Total power

0.015

5.4

2-channel device, AVDD = DVDD = 3.3 V,

IOVDD = LDO = 1.8 V, active mode

69.2

2.8

AVDD current

DVDD current

IOVDD and LDO Current

Total power

0.353

2

2-channel device, AVDD = DVDD = 3.3 V

IOVDD = LDO = 1.8 V, sleep mode

13.995

0.06

0.007

0.221

1.3

AVDD current

DVDD current

Total power⁽¹⁾

AVDD current

DVDD current

IOVDD and LDO Current

Total power

2-channel device, AVDD = DVDD = 3.3 V,

IOVDD = LDO = 1.8 V,

standby mode for software device

2-channel device, AVDD = DVDD = 3.3 V,

IOVDD = LDO = 1.8 V,

standby mode for hardware device

0.35

1.4

7.965

31

AVDD current

DVDD current

IOVDD current

Total power

0.01

10

4-channel device, AVDD = DVDD = IOVDD = 3.3 V,

active mode

135.3

2.8

AVDD current

DVDD current

IOVDD current

Total power

0.35

2.2

4-channel device, AVDD = DVDD = IOVDD = 3.3 V,

sleep mode

17.655

0.06

0.015

0.12

0.644

1.3

AVDD current

DVDD current

IOVDD current

Total power

4-channel device, AVDD = DVDD = IOVDD = 3.3 V,

standby mode for software device

AVDD current

DVDD current

IOVDD current

Total power

0.35

0.16

10.725

4-channel device, AVDD = DVDD = IOVDD = 3.3 V,

standby mode for hardware device

(1) IOVDD and LDO current consumption is negligible for software-controlled devices in standby mode.

14

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ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

Electrical Characteristics: DC (continued)

all specifications at T_A= 25°C, AVDD = 3.3 V, DVDD = 3.3 V, IOVDD = 3.3 V, slave mode, single-speed mode, f_S= 48 kHz,

system clock = 512 × f_S, and 24-bit data (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

mA

mW

mA

mW

mA

mW

mA

mW

mA

AVDD current

31

DVDD current

0.01

8.3

4-channel device, AVDD = DVDD = 3.3 V,

IOVDD = LDO = 1.8 V, active mode

IOVDD and LDO Current

Total power

117.3

2.8

AVDD current

DVDD current

0.35

2

4-channel device, AVDD = DVDD = 3.3 V,

IOVDD = LDO = 1.8 V, sleep mode

IOVDD and LDO Current

Total power

13.995

0.06

0.007

0.221

1.3

AVDD current

4-channel device, AVDD = DVDD = 3.3 V,

IOVDD = LDO = 1.8 V,

standby mode for software device

DVDD current

Total power⁽¹⁾

AVDD current

4-channel device, AVDD = DVDD = 3.3 V,

IOVDD = LDO = 1.8 V,

standby mode for hardware device

DVDD current

0.35

1.4

IOVDD and LDO Current

Total power

7.965

0.5

on IOVDD when XTAL is used

on DVDD in BCK PLL mode

1.5

on IOVDD when master mode is enabled

2

Additional current consumption

Power-supply rejection ratio

IOVDD = 3.3 V or IOVDD = LDO = 1.8 V, f_S= 192

kHz, 2-channel active mode

4

mA

IOVDD = 3.3 V or IOVDD = LDO = 1.8 V, f_S= 192

kHz, 4-channel active mode

7.5

80

mA

dB

PSRR

MIC BIAS

Mic bias noise

5

4

µV_RMS

mA

Mic bias current drive

Mic bias voltage

2.6

V

DIGITAL I/O

V_OH

V_OL

Output logic high voltage level

I_OH= 2 mA

75

25

%IOVDD

µA

Output logic low voltage level

Input logic high current level

Input logic low current level

I_OL= –2 mA

All digital pins

|I_IH|1

|I_IL|1

10

–10

µA

15

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

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7.7 Electrical Characteristics: Digital Filter

all specifications at T_A= 25°C, AVDD = 3.3 V, DVDD = 3.3 V, IOVDD = 3.3 V, master mode, single-speed mode, f_S= 48 kHz,

system clock = 256 × f_S, and 24-bit data (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

CLASSIC FIR

Pass band

0.454

0.583

±0.05

–65

30

f_S

Stop band

Pass-band ripple

dB

Stop-band attenuation

Group delay or latency

HPF –3-dB cutoff frequency

dB

Samples

Hz

1

LOW LATENCY IIR

Pass band

0.454

0.546

±0.02

–75

10

f_S

Stop band

Pass-band ripple

Stop-band attenuation

Group delay or latency

HPF –3-dB cutoff frequency

dB

Samples

Hz

1

7.8 Timing Requirements: External Clock

all specifications at T_A= 25°C, AVDD = 3.3 V, DVDD = 3.3 V, IOVDD = 3.3 V, master mode, single-speed mode, f_S= 48 kHz,

system clock = 256 × f_S, 24-bit data (unless otherwise noted)

MIN

15

TYP

MAX

35

UNIT

MHz

XTAL support

MCLK frequency

MCLK

3.3 V on MCLK pin

1.8 V MCLK input on XI pin

1.8 V MCLK

1

50

1

50

MCLK input duty cycle

48%

52%

50

IOVDD = 3.3 V

MHz

Maximum BCK frequency

IOVDD = 1.8 V

25

16

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

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ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

7.9 Timing Requirements: I²C Control Interface

CONDITIONS

Standard

MIN

MAX

100

UNIT

kHz

f_SCL

SCL clock frequency

Fast

400

kHz

Standard

Fast

4.7

1.3

t_BUF

Bus free time between a STOP and START condition

Low period of the SCL clock

High period of the SCL clock

Setup time for repeated START condition

Hold time for START condition

Hold time for repeated START condition

Data setup time

µs

Standard

Fast

4.7

t_LOW

1.3

Standard

Fast

4.0

µs

ns

µs

ns

µs

ns

µs

ns

t_HI

600

Standard

Fast

4.7

t_RS-SU

t_S-HD

t_RS-HD

t_D-SU

t_D-HD

t_SCL-R

t_SCL-R1

t_SCL-F

t_SDA-R

t_SDA-F

t_P-SU

600

Standard

Fast

4.0

600

Standard

Fast

4.0

600

Standard

Fast

250

ns

100

Standard

Fast

0

900

Data hold time

0

Standard

Fast

20 + 0.1C_B

4.0

1000

300

Rise time of SCL signal

Standard

Fast

1000

300

Rise time of SCL signal after a repeated START

condition and after an acknowledge bit

Standard

Fast

1000

300

Fall time of SCL signal

Standard

Fast

1000

300

Rise time of SDA signal

Fall time of SDA signal

Setup time for STOP condition

Standard

Fast

1000

300

Standard

Fast

µs

ns

pF

ns

600

C_B

t_SP

Capacitive load for SDA and SCL line

Pulse duration of spike suppressed

400

50

Fast

Noise margin at high level for each connected device

(including hysteresis)

V_NH

0.2V_DD

V

Repeated

START

STOP

START

t_D-HD

t_SDA-R

t_D-SU

t_P-SU

t_SDA-F

t_BUF

SDA

SCL

t_RS-HD

t_LOW

t_SP

t_SCL-R

t_SCL-F

t_S-HD

t_RS-SU

t_HI

Figure 1. I²C Control Interface Timing

17

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

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7.10 Timing Requirements: SPI Control Interface

MIN

100

40

MAX

UNIT

ns

t_MCY

t_MCL

t_MCH

t_MHH

t_MSS

t_MSH

t_MDH

t_MDS

t_MOS

MC pulse period

Pulse duration, MC low

Pulse duration, MC high

Pulse duration, MS high

MS falling edge to MC rising edge

MS hold time⁽¹⁾

ns

40

ns

20

ns

30

ns

30

ns

MOSI hold time

15

ns

MOSI setup time

15

ns

MC rising edge to MDO stable

20

ns

(1) MC falling edge for LSB to MS rising edge.

MS

t

MCL

MCH

t

MSS

MSH

MHH

MC

MOSI

MISO

t

MCY

MSB IN

BIT 15

BIT 14 - 2

BIT 1

LSB

t

MDS

MDH

BIT 1

LSB

HI-Z

Figure 2. SPI Control Interface Timing

18

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

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ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

7.11 Timing Requirements: Audio Data Interface for Slave Mode

PARAMETER⁽¹⁾

MIN

1 / (64 × f_S)

1.5 × t_SCKI

50

TYP

MAX UNIT

t_BCKP

t_BCKH

t_BCKL

t_LRSU

t_LRHD

t_LRCP

t_CKDO

t_LRDO

t_R

BCK period

ns

µs

BCK pulse duration high

BCK pulse duration low

LRCK set up time to BCK rising edge

LRCK hold time to BCK rising edge

LRCK period

10

Delay time BCK falling edge to DOUT valid

Delay time LRCK edge to DOUT valid

Rise time of all signals

–10

40

20

ns

–10

t_F

Fall time of all signals

(1) Timing measurement reference level is 1.4 V for input and 0.5VDD for output. Rise and fall times are measured from 10% to 90% of the

IN/OUT signals swing. Load capacitance of DOUT is 20 pF. t_SCKImeans SCKI period.

t_LRCP

LRCK

1.4 V

t_BCKH

t_BCKL

t_LRHD

t_LRSU

BCK

1.4 V

t_BCKP

t_CKDO

t_LRDO

DOUT

0.5 V_DD

Figure 3. Audio Data Interface Timing, Slave Mode: LRCK and BCK as Inputs

19

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MAX UNIT

7.12 Timing Requirements: Audio Data Interface for Master Mode

PARAMETER⁽¹⁾

MIN

TYP

t_BCKP

BCK period

150 1 / (64 ×

f_S)

2000

ns

t_BCKH

t_BCKL

t_CKLR

t_LRCP

t_CKDO

t_LRDO

t_R

BCK pulse duration high

65

1000

20

ns

µs

ns

BCK pulse duration low

Delay time BCK falling edge to LRCK valid

LRCK period

–10

10

–10

1/f_S

125

20

Delay time BCK falling edge to DOUT valid

Delay time LRCK edge to DOUT valid

Rise time of all signals

20

t_F

Fall time of all signals

20

t_SCKBCKDelay time SCKI rising edge to BCK edge⁽²⁾

5

30

(1) Timing measurement reference level is 0.5 V_DD. Rise and fall times are measured from 10% to 90% of the IN/OUT signals swing. Load

capacitance of all signals are 20 pF.

(2) Timing measurement reference level is 1.4 V for input and 0.5 V_DDfor output. Load capacitance of BCK is 20 pF. This timing is applied

when SCKI frequency is less than 25 MHz.

t_LRCP

LRCK

0.5 V_DD

t_BCKH

t_BCKL

t_CKLR

BCK

t_BCKP

t_CKDO

t_LRDO

DOUT

Figure 4. Audio Data Interface Timing, Master Mode: LRCK and BCK as Outputs

1.4 V

SCKI

t

SCKBCK

0.5 V

DD

BCK

Figure 5. Audio Data Interface Timing, Master Mode: BCK as Outputs

20

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7.13 Typical Characteristics

all specifications at T_A= 25°C, AVDD = 3.3 V, DVDD = 3.3 V, IOVDD = 3.3 V, master mode, single-speed mode, f_S= 48 kHz,

system clock = 256 × f_S, and 24-bit data (unless otherwise noted)

0

-20

0

-20

-40

-60

-80

-100

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

Input Level (dBFS)

D001

D002

PCM1861, PCM1863, and PCM1865

PCM1860, PCM1862, and PCM1864

Figure 6. THD+N vs Input Level

Figure 7. THD+N vs Input Level

-60

-70

-60

-70

-80

-90

-100

-110

-120

-130

-140

-150

-160

-100

-110

-120

-130

-140

-150

-160

0

4

8

12

16

20

0

4

8

12

16

20

Frequency (kHz)

D003

D004

PCM1861, PCM1863, and PCM1865

Input = –60 dBFS at 1 kHz

PCM1860, PCM1862, and PCM1864

Input = –60 dBFS at 1 kHz

Figure 8. Main ADC Output FFT

Figure 9. Main ADC Output FFT

0

-20

0

-20

-40

-60

-80

-100

-120

-140

-160

-100

-120

-140

-160

0

4

8

12

16

20

0

4

8

12

16

20

Frequency (kHz)

D005

D006

PCM1861, PCM1863, and PCM1865

Input = –1 dBFS at 1 kHz

PCM1860, PCM1862, and PCM1864

Input = –1 dBFS at 1 kHz

Figure 10. Main ADC Output FFT

Figure 11. Main ADC Output FFT

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Typical Characteristics (continued)

all specifications at T_A= 25°C, AVDD = 3.3 V, DVDD = 3.3 V, IOVDD = 3.3 V, master mode, single-speed mode, f_S= 48 kHz,

system clock = 256 × f_S, and 24-bit data (unless otherwise noted)

-108.75

-102.6

-102.7

-102.8

-102.9

-103

-109

-109.25

-109.5

-109.75

-110

-103.1

-103.2

-103.3

-103.4

-103.5

-103.6

-110.25

-110.5

-110.75

3

3.1

3.2

3.3

3.4

3.5

3.6

3

3.1

3.2

3.3

3.4

3.5

3.6

Supply Voltage (V)

D007

D008

PCM1861, PCM1863, and PCM1865

Figure 12. Dynamic Range vs Supply Voltage

PCM1860, PCM1862, and PCM1864

Figure 13. Dynamic Range vs Supply Voltage

-94.1

-94.2

-94.3

-94.4

-94.5

-94.6

-94.7

-94.8

-94.9

-95

-91.5

-91.55

-91.6

-91.65

-91.7

-91.75

-91.8

-91.85

-91.9

-95.1

3

3.1

3.2

3.3

3.4

3.5

3.6

3

3.1

3.2

3.3

3.4

3.5

3.6

Supply Voltage (V)

D009

D010

PCM1861, PCM1863, and PCM1865

Figure 14. THD+N vs Supply Voltage

PCM1860, PCM1862, and PCM1864

Figure 15. THD+N vs Supply Voltage

250

200

150

100

50

0

-5

-10

-15

-20

-25

-30

-35

4ch

2ch

0

48

96

144

192

20

200

2k

20k

Sample Rate (kHz)

Frequency (Hz)

D011

D012

At f_S= 48 kHz, 96 kHz, and 192 kHz

Figure 16. Power Consumption vs Sample Rate

f_S= 48 kHz

Figure 17. Secondary ADC Frequency Response

22

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Typical Characteristics (continued)

all specifications at T_A= 25°C, AVDD = 3.3 V, DVDD = 3.3 V, IOVDD = 3.3 V, master mode, single-speed mode, f_S= 48 kHz,

system clock = 256 × f_S, and 24-bit data (unless otherwise noted)

0

-20

-40

-60

-80

-100

-120

-140

-160

-100

-120

-140

-160

0

4

8

12

16

20

0

10

20

30

40

50

60

Frequency (kHz)

D013

D014

f_S= 48 kHz

f_S= 192 kHz, BW = 60 kHz, Input = –1 dBFS

Figure 18. Secondary ADC FFT

Figure 19. High Bandwidth FFT of THD Components

40

36

32

28

24

20

16

12

8

0

-10

-20

-30

-40

-50

-60

-70

-80

-90

4

0

-4

-8

-12

-12 -8 -4

0

4

8

12 16 20 24 28 32 36 40

-90

-80

-70

-60

-50

-40

-30

-20

-10

0

Input Amplitude (dB)

D015

D016

Figure 20. PGA ADC Gain

Figure 21. Linearity, Input vs Output

8 Parameter Measurement Information

All typical characteristics for the devices are measured using the respective PCM186x evaluation module (EVM)

and an Audio Precision SYS-2722 Audio Analyzer. A programmable serial interface adapter (PSIA) is used to

allow the I²S interface to be driven directly into the SYS-2722. The EVM schematic is shown in Figure 22.

23

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9 Detailed Description

9.1 Overview

The PCM186x family of audio, analog-to-digital converters (ADCs) features a highly flexible, audio front end that

supports input levels from small millivolt microphone inputs to 2.1-V_RMSline inputs. The analog front end can be

configured to support either differential or single-ended inputs, providing optimal performance when using

differential inputs. Mixing single-ended and differential inputs is possible. A digital microphone interface is

available in the software-controlled devices.

These devices support advanced clocking with the aid of an integrated oscillator circuit and an on-chip analog

phase-locked loop (PLL). The integrated oscillator circuit allows for the use of an external crystal or an external

master clock as the clock source in master mode. In addition, the PLL can be used to generate an on-chip

master clock that can be shared with the rest of the system, all from a bit clock input. This feature is useful in

systems where the audio source has no master clock to drive digital-to-analog converters (DACs) and amplifiers.

The on-chip clock monitoring system can also be monitored by the system microcontroller, in case clocks are lost

and the device enters sleep or standby state.

The secondary analog-to-digital converter (ADC) is a low-power, non-audio ADC that is used in sleep mode to

monitor the analog inputs. The secondary ADC is also used in controlsense mode to measure dc voltages in a

system, such as battery voltage and control potentiometers. In addition, controlsense features offer an option to

generate interrupts after detected voltages cross specific thresholds, allowing the microcontroller to be in a lower-

power sleep mode while the control voltages being measured are stable.

Control registers in this data sheet are shown as REGISTER_BIT_or_BYTE_NAME (page.x hex_address).

9.2 Functional Block Diagrams

The high level block diagrams, Figure 23 to Figure 25, show the differences between the PCM186x family. An

internal block diagram of the PCM186x family is shown in Figure 26.

PCM1860

VINL1/VIN1P

VINL2/VIN1M

VINL3/VIN4P

VINL4/VIN4M

PCM1861

MIX,

MUX

Primary

ADC

PGA

Audio

Serial

Port

BCK

Secondary

ADC

LRCK

DOUT

Energysense

VINR1/VIN2P

VINR2/VIN2M

VINR3/VIN3P

VINR4/VIN3M

(LJ, I²S)

MIX,

MUX

Primary

ADC

INT

VREF

MD6

MD5

MD4

MD3

MD2

MD1

MD0

Reference

Power

Mic Bias

Control

and

Interrupt

Clocks, PLL

Figure 23. PCM1860 and PCM1861

25

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Functional Block Diagrams (continued)

PCM1862

PCM1863

VINL1/VIN1P

VINL2/VIN1M

VINL3/VIN4P

VINL4/VIN4M

Primary

ADC

MIX,

MUX

PGA

Audio

Serial

BCK

Mixer and

Energysense

DSPs

Secondary

ADC

LRCK

DOUT

Port

VINR1/VIN2P

VINR2/VIN2M

VINR3/VIN3P

VINR4/VIN3M

(LJ, I²S, TDM)

MIX,

MUX

Primary

ADC

DOUT2

DMIC/DIN

GPIO3/INTC

VREF

GPIO2/INTB/DMCLK

GPIO1/INTA/DMIN

MISO/GPIO0

MOSI/SDA

Reference

Power

Mic Bias

Control,

GPIO,

Interrupt,

Digital Mic Interface

MC/SCL

Clocks, PLL

MS/AD

MD0

Figure 24. PCM1862 and PCM1863

PCM1864

PCM1865

Primary

ADC

(CH1L)

PGA

VINL1/VIN1P

VINL2/VIN1M

VINL3/VIN4P

VINL4/VIN4M

Primary

ADC

MIX,

MUX

(CH2L)

Audio

Serial

BCK

Mixer and

Energysense

DSPs

Secondary

ADC

LRCK

DOUT

Port

VINR1/VIN2P

VINR2/VIN2M

VINR3/VIN3P

VINR4/VIN3M

(LJ, I²S, TDM)

Primary

ADC

(CH1R)

MIX,

MUX

PGA

Primary

ADC

DOUT2

(CH2R)

DMIC/DIN

GPIO3/INTC

GPIO2/INTB/DMCLK

GPIO1/INTA/DMIN

MISO/GPIO0/DMIN2

MOSI/SDA

VREF

Reference

Power

Mic Bias

Control,

GPIO,

Interrupt,

Digital Mic Interface

MC/SCL

Clocks, PLL

MS/AD

MD0

Figure 25. PCM1864 and PCM1865

26

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Functional Block Diagrams (continued)

Power supplies and references have been omitted from this diagram for simplicity. Dotted lines, for the

programmable gain amplifier (PGA) and the additional ADCs, are for the 4-channel devices only. Greyed-out pins

are multifunction pins only.

SCKI

SCK0

(GPIO)

XI

MUX

XO

Clock Generator

and Detector

MUX

PLL

LRCK

Analog

CTRL

BCK_IN

PGA

Controller

BCK

Audio

ADC

On-Chip

Oscillator

Analog PGAs

Audio

ADC

GPIO2/INTB/DMCLK

GPIO1/INTA/DMIN

MISO/GPIO0/DMIN2

Digital Mic Inputs

VINL1/VIN1P

VINL2/VIN1M

VINL3/VIN4P

VINL4/VIN4M

DSP #1

DSP #2

MIX,

MUX

Audio

ADC

Audio

Digital

S-Curve

Volume

6ch

2ch

DOUT

Serial

TX

Audio

Serial

TX

FIR/IIR

Filter

High-Pass

Filter

6ch Mixer

Analog

PGAs

DOUT2

(GPIO)

(ADC + I²S)

VINR1/VIN2P

VINR2/VIN2M

VINR3/VIN3P

VINR4/VIN3M

Digital

PGA

Audio

Serial

RX

DIN

(GPIO)

MIX,

MUX

Audio

ADC

Energysense

Signal Loss

Digital Zero

Crossing Detect

PGA Zero

Cross

Detect

Sec

ADC

Low-Pass

Filter

High-Pass

Filter

Energysense

Signal Resume

Interrupt

Manager

and

INT

ADC

Master

Clock

DC Threshold

Cross Detect

Controller

On-Chip

Oscillator

1/8

Mic

Bias

I²C/SPI

Port

Mic Bias

Figure 26. Internal Block Diagram of the PCM186x

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PCM1863, PCM1864, PCM1865

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9.3 Features Description

9.3.1 Analog Front End

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The PCM186x has a flexible front end that accepts either differential or single-ended inputs. The device supports

up to 2.1 VRMS in single-ended mode, and up to 4.2 VRMS in differential mode.

The MIX and MUX circuit before the PGA allows the analog inputs to be mixed and multiplexed in both single-

ended and differential modes. Mixing functionality is available in software-controlled devices only. No individual

gain controls are available before the PGA. A high-level diagram of the front-end circuitry is shown in Figure 27.

PCM186x

Mic Bias

Generator

Digial Microphone PDM Input

(Software Controlled Devices Only)

VINL1/VIN1P

VINL2/VIN1M

VINL3/VIN4P

VINL4/VIN4M

MIX,

MUX

Audio

ADC

Decimation and

Other Filters

Analog

PGAs

VINR1/VIN2P

VINR2/VIN2M

VINR3/VIN3P

VINR4/VIN3M

Digital

PGA

MIX,

MUX

Audio

ADC

PGA

Zero-Cross Detect

Figure 27. High Level View of PCM186x Front End-Circuitry

DC blocking capacitors are required on the analog inputs to make sure that correct dc bias conditions are

established. Because the value of the output short-circuit protection resistor in the source product is typically

unknown, issues such as gain error and dc shift may occur if dc blocking capacitors are not used.

For systems where external amplifiers are used before the PCM186x, dc blocking capacitors are still

recommended because the input pins are designed to bias to AVDD / 2. The common mode voltage range is still

limited to the maximum input voltage of the device.

Do not connect unused analog input pins.

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Features Description (continued)

9.3.2 Microphone Support

The PCM186x supports analog and digital microphones. Analog signals are treated the same way as line-level

signals, except for the requirement for mic bias. Digital microphone Inputs (PDM inputs) use GPIOs on the

device. Two-channel ADC variants of the PCM186x family can support two digital microphones using a single

data pin and a single clock pin. The 4-channel variants can support up to 4 digital microphones (2 data pins).

The PCM1860 and PCM1861 offer three pin-selectable gain options, 0 dB, 12 dB, or 32 dB.

The PCM1862, PCM1863, PCM1864, and PCM1865 offer programmable gain options from –12 dB to +32 dB

with –0.5-dB step intervals.

Digital microphones typically have a PDM output that can be brought into an ADC digital decimation filter. PDM

microphones require power and a clock. Power should be handled from an external source.

Digital microphone mode gain can be added in the digital PGA and in the mixer. In digital microphone mode, the

PCM1862 and PCM1863 offer up to 18-dB gain (mixer only); whereas, the PCM1864 and PCM1865 offer up to

30-dB gain (18 dB from mixer and 12 dB from digital PGA).

On the PCM1864 and PCM1865, a 2-channel digital mic + 2-channel ADC mode is possible. With the PCM1862

or PCM1863, four channels are only possible with a ADC + I²S input configuration.

9.3.2.1 Mic Bias

The PCM186x can provide a microphone bias to power and bias microphones at 2.6 V on pin 5. Decouple or

filter the Mic Bias pin with an external capacitor. Mic Bias is typically used with a electret microphone. The

internal regulator, as well as an on-chip terminating resistor to GND can also be enabled using register

MIC_BIAS_CTRL (Page.3, 0x15). By default, the device is configured to bypass the on-chip resistor. The mic

bias pin can be left unconnected if not used.

9.3.3 Input Multiplexer (PCM1860 and PCM1861)

The hardware-controlled devices can support a wide gain range using the MD2, MD5 and MD6 configuration pins

as shown in Table 1.

Table 1. Channel and Gain Selection for Hardware-Controlled Devices

MD6

L

MD5

L

MD2

L

ADC1_L / PGA1_L

S.E - VINL1 / 0 dB

ADC1_R / PGA1_R

S.E - VINR1 / 0 dB

L

H

S.E - VINL2 / 0 dB

S.E - VINR2 / 0 dB

L

H

L

S.E - VINL3 / 0 dB

S.E - VINR3 / 0 dB

L

H

S.E - VINL4 / 0 dB

S.E - VINR4 / 0 dB

H

L

S.E - VINL4 / 12 dB

S.E - VINL4 / 32 dB

Diff(VIN1P/VIN1M) / 0 dB

Diff(VIN3P/VIN3M) / 12 dB

S.E - VINR4 / 12 dB

S.E - VINR4 / 32 dB

Diff(VIN2P/VIN2M) / 0 dB

Diff(VIN4P/VIN4M) / 12 dB

H

L

H

L

H

29

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9.3.4 Mixers and Multiplexers (PCM1862, PCM1863, PCM1864, and PCM1865)

The PCM186x software-controlled devices offer a mix and multiplex level of functionality on the front end, as

shown in Figure 27. The switches integrated into the multiplexer can also be switched on in parallel, offering a

direct mix of inputs. This function can be selected by register for each ADC input selection,

ADCX1_INPUT_SEL_X (Page.0, 0x06 → 0x09). In single ended mode, each Audio ADC is tightly coupled to a

dedicated PGA and MUX. ADC1L (and ADC2L on the PCM1864 and PCM1865) is connected a mux that has

input pins VINLx, (x = 1 to 4). ADC1R (and ADC2R on the PCM1864 and PCM1865) is connected to a mux that

has input pins VINRx (x = 1 to 4).

Mixing between the left channels of stereo pairs is possible in the mux dedicated to ADC1L and right channels of

stereo pairs in the mux dedicated to ADC1R. In addition, polarity of the inputs can be inverted using the MSB of

the select register. Mixing left and right sources to create mono mixes can only be done in the digital mixer, post

ADC conversion, or alternatively, other analog inputs can be connected for mixing.

The examples available are shown in Table 2, where [SE] is single-ended, and [DIFF] is a differential input.

Table 2. MUX, MIX, and Polarity Input Selection⁽¹⁾

REGISTER

CODE

ADC1L AND ADC2L

ADC1R AND ADC2R

0x00

No Selection (Mute)

VINL1[SE] (Default)

No Selection (Mute)

VINR1[SE] (Default)

0x01

0x02

0x03

0x04

0x05

0x06

0x07

0x08

0x09

0x0A

0x0B

0x0C

0x0D

0x0E

0x0F

0x10

0x20

0x30

VINL2[SE]

VINR2[SE]

VINL2[SE] + VINL1[SE]

VINR2[SE] + VINR1[SE]

VINL3[SE]

VINR3[SE]

VINL3[SE] + VINL1[SE]

VINR3[SE] + VINR1[SE]

VINL3[SE] + VINL2[SE]

VINR3[SE] + VINR2[SE]

VINL3[SE] + VINL2[SE] + VINL1[SE]

VINL4[SE]

VINR3[SE] + VINR2[SE] + VINR1[SE]

VINR4[SE]

VINL4[SE] + VINL1[SE]

VINR4[SE] + VINR1[SE]

VINL4[SE] + VINL2[SE]

VINR4[SE] + VINR2[SE]

VINL4[SE] + VINL2[SE] + VINL1[SE]

VINL4[SE] + VINL3[SE]

VINR4[SE] + VINR2[SE] + VINR1[SE]

VINR4[SE] + VINR3[SE]

VINL4[SE] + VINL3[SE] + VINL1[SE]

VINL4[SE] + VINL3[SE] + VINL2[SE]

VINL4[SE] + VINL3[SE] + VINL2[SE] + VINL1[SE]

{VIN1P, VIN1M}[DIFF]

VINR4[SE] + VINR3[SE] + VINR1[SE]

VINR4[SE] + VINR3[SE] + VINR2[SE]

VINR4[SE] + VINR3[SE] + VINR2[SE] + VINR1[SE]

{VIN2P, VIN2M}[DIFF]

{VIN4P, VIN4M}[DIFF]

{VIN3P, VIN3M}[DIFF]

{VIN1P, VIN1M}[DIFF] + {VIN4P, VIN4M}[DIFF]

{VIN2P, VIN2M}[DIFF] + {VIN3P, VIN3M}[DIFF]

(1) Bold items are channel options for hardware-controlled devices.

30

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ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

9.3.5 Programmable Gain Amplifier

The PCM186x has a two-stage programmable gain amplifier (PGA). Coarse gain adjustment is done in the

analog domain, and fine gain adjustment is done in the digital domain. The ±12-dB analog gain steps are

designed for varying line level inputs, whereas the 20 dB and 32 dB are primarily designed for microphone

inputs, and will likely need additional gain that can be done in the digital domain. The analog gain steps between

–12 dB and +12 dB are in 1-dB steps. Half-dB steps between those points are done in the digital PGA. Gain

steps between 12 dB and 20 dB are all done in the digital domain. (for example, 18-dB gain = 12-dB analog + 6-

dB digital). The gain structure in the PCM186x is shown in Figure 28.

œ12 dB to +32 dB

0.5 dB to 11.5 dB

œ100 dB to +18 dB

œ100 dB to 0 dB

Decimation

Filter

Digital

Mixer

S-Curve

Volume

Audio

ADC

Analog

PGA

Digital

PGA

Mixer

PGA

CIC Filter

Figure 28. PCM186x Complete Gain Structure (PGAs and Attenuator)

The analog gain steps within the analog PGA are shown in Figure 29. Again, from –12 dB to +12 dB, the steps

are 1 dB each. The digital PGA has granularity down to 0.5 dB.

PGA

Value

0x74.0

0x0C.0

0x14.0

0x40.0

œ12 dB to +12 dB in 1-dB steps

œ12 dB

0 dB

12 dB

20 dB

32 dB

Figure 29. Analog Gain Steps With Software-Controlled Devices

The PGA in the PCM186x is a hybrid analog and digital programmable gain amplifier. The devices integrate a

lookup table with the optimal gain balance between analog and digital gain, allowing the gain to be set in a single

register per channel. For example, set 18 dB gain, and the system allocates 12 dB to the analog PGA, and 6 dB

to the digital PGA. This function is called auto gain mapping.

The PGA is a zero crossing detect type, and has the ability to set target gain, and have the device work towards

it (with a timeout if there is no zero crossing). Any changes in the Analog PGA and digital PGA are designed to

step towards the final level. However, any changes in the mixer PGA are immediate. Take care when changing

gain levels in the digital mixer PGA. Alternatively, multiple writes can be made of small enough values that do not

cause significant pops or clicks.

NOTE

Changing gain in the PGA requires the on-chip DSP to be clocked. The DSP is used to

calculate the steps to the target gain. This is not an issue in master mode, but can be a

challenge in slave mode, if the system master is not active yet.

For example, if the current level = 0 dB, then set the target as 3.5 dB. The PGA then increases gain in 0.5-dB

steps towards 3.5 dB.

The auto gain mapping function can by bypassed if required, using manual gain mapping. Manual gain mapping

is useful when using digital microphones, as the PDM input signal bypasses the analog PGA and must be

amplified using the digital PGA. (PGA_MODE (Page.0, 0x19). Digital PGA update is only available in the 4-

channel devices because the digital gain in 2-channel devices is fixed to 0 dB when manual gain mapping is

enabled.

NOTE

Using the device with a differential inputs increases the full-scale voltage to 4.2 V_RMS

(that's 2.1 V_RMSper pin, out of phase).

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9.3.6 Automatic Clipping Suppression

The PCM186x software-controlled devices have the ability to automatically lower the gain in 0.5 dB steps under

the following conditions if the ADC is clipping.

The device detects clipping after the decimation filter in the signal chain, shown in Figure 30, and counts the

number of successive clips before responding.

The device also generates an internal interrupt that can be mapped to a GPIO or interrupt pin, allowing the

system microcontroller to make the decision to increase the gain and consider the clipping an isolated event, or

make the decision that the new gain setting is appropriate.

–12 dB to +32 dB

0.5 dB to 12 dB

Mixer

PGA

Digital

PGA

Digital

Mixer

S-Curve

Volume

Decimation

Filter

Analog

PGA

ADC

CIC Filter

–100 dB ~ +18 dB

–100 dB ~ 0 dB

Zero

PGA

Cross

Controller

Detector

Auto

Gain

Digital PGA

Overflow Detector

Control

Figure 30. Sampling Points Within the PCM186x for Auto Clipping Suppression

9.3.6.1 Attenuation Level

This feature is not designed to be a complete analog gain control. This feature was defined to avoid clipping, and

to inform the system microcontroller of a clipping event, to allow the microcontroller (or the end user) to decide if

the gain should be increased again.

The attenuation is programmable to –3 dB, –4 dB, –5 dB, or –6 dB.

9.3.6.2 Channel Linking

Depending on the application, users may not want to link input channels, however, for the majority of stereo input

applications, its strongly recommended to set the system to track gain across inputs, to maintain balance.

The auto PGA clipping suppression control has the settings shown in Table 3.

Table 3. Auto Clipping Suppression Control Registers

REGISTER

LOCATION

REGISTER NAME

USAGE

VALUES

0: Disable (Default)

1: Enable

AGC_EN

Pg0 0x05

Enable auto gain control

0: 80

Start auto gain control after detects CLIP_NUM times of ADC

sample clips

1: 40

2: 20

CLIP_NUM[1:0]

Pg0 0x05

3: 10 (Default)

0: –3 dB (Default)

1: –4 dB

2: –5 dB

MAX_ATT[1:0]

Pg0 0x05

Maximum automatic attenuation

3: –6 dB

Enable clipping detection after the digital PGA. Note that digital

PGA is post ADC, meaning that there is a short delay before

clipping is detected.

0: Disable (Default)

1: Enable

DPGA_CLIP_EN

0: Independent control (Default)

1: Ch1[R]/Ch2[L]/Ch2[R] follow Ch1[L] PGA

value.

Link all channels together if dealing with stereo sources to maintain

balance.

LINK

Pg0 0x05

0: Immediate change

1: Smooth change (default)

SMOOTH

Enable smooth transition from step to step (zero crossing).

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9.3.7 Zero Crossing Detect

The PCM186x uses a zero crossing detector to make gain changes only when the incoming signal crosses the

halfway point between negative and positive swing, reducing zipper noise.

There are two sources for the controller, the output of the ADC modulator and the output from the digital PGA.

The analog PGA is sampled at four times the audio sampling rate to detect the zero crossing. The digital PGA is

sampled at a similar rate.

The process for changing gain in the PCM186x is as follows:

1. Detect a zero crossing of the oversampled analog input channel.

2. Increment or decrement the gain toward the target PGA value step by 0.5 dB.

3. Repeat from (1) until arrival at the target PGA value.

4. If zero crossing does not occur for 8192 sample times (= time out), change the gain per sample.

This process does not require intervention by the user. This data serves as information only. Also, please note

that DSPs must be running (clocked) for this functionality to work.

9.3.8 Digital Inputs

9.3.8.1 Stereo PCM Sources

The PCM186x can support stereo PCM data on GPIO pins so that I²S sources, such as wireless modules can

have their data mixed with the incoming analog content. The clock rate of the incoming data (known as DIN)

must be synchronous with the PCM186x software-controlled device main clocks. There is no integrated sample

rate converter on-chip. The DIN signal can be received on GPIO0, 1, 2, or 3, and configured on GPIO_FUNC_X

(Page.0 0x10 and 0x11). The incoming data are then driven to the digital mixer running on DSP2.

The audio format can be configured separately from the output serial port using register RX_TDM_OFFSET (P0,

0x0E).

Inputs can be mixed and volume-controlled before routing to a digital amplifier. Typical uses could be the

connection to a Bluetooth module. The mixing and crossfading is done all in the PCM186x, rather than a hard

switch in external logic. The on-chip PLL also helps create the system master clock (SCKOUT) for poorly

designed I²S Bluetooth modules that do not provide a system clock to drive the system DACs.

If the stereo PCM data source has a requirement to drive the audio clock pins when transmitting in a system

where the PCM186x has not been set to slave yet, the PCM186x does not suffer any damage during clock driver

contention. However, the PCM186x will have some irregular output due to clock errors. In systems with additional

stereo PCM sources that need to be master (such as a S/PDIF receive), set the PCM186x to always be a clock

slave, or switch the device from master to slave mode, before enabling the stereo PCM source.

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9.3.8.2 Digital PDM Microphones

Up to four digital microphones are supported on the PCM1864 and PCM1865, using a shared output clock

(configured from GPIO2) and two data lines, GPIO0 or GPIO1. Two digital microphones are supported on the

PCM1862 and PCM1863, mainly using GPIO1 as the data input. The PCM1860 or PCM1861 does not support

digital microphones. The typical connection and protocol diagrams for these microphones are shown in Figure 31

and Figure 32.

GPIO1

DATA_L

DATA

CLK

DIGMIC_IN1

GPIO1

Wired-OR

L/R SEL

GND

VDD

DATA_R

DATA

CLK

L/R SEL

GPIO2

DIGMIC_CLK (64 × f_S)

GPIO2

Figure 31. Digital Microphone Example Connection

GPIO2

(DIGMIC_CLK)

Hi-Z

DATA_L

DATA_R

GPIO1

L(n)

Hi-Z

L(n+1)

Hi-Z

L(n+2)

Hi-Z

R(n)

R(n+1)

L(n)

L(n+1)

Figure 32. Digital Microphone Protocol

Supported Digital Microphone clock frequency is as follows, and the frequency depends on required operating

sampling frequency as follows:

•

2.0480 MHz (32 kHz × 64)

2.8224 MHz (44.1 kHz × 64)

3.072 MHz (48 kHz × 64)

3.072 MHz (96 kHz × 32 )

The recommended operating conditions for the Digital MIC are:

•

Sampling frequency is 32 kHz or 44.1 kHz

SCK is 256 × f_S.

Enable Auto Clock Detector (Default)

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9.3.9 Clocks

9.3.9.1 Description

The PCM186x family has an extremely flexible clocking architecture. All converters require a master clock

(typically, a 2ⁿpower of the sampling rate known as MCK), a bit clock (BCK) that is used to clock the data bit-by-

bit out of the device (typically running at 64-f_Sto allow up to 32 bits per channel output), and finally a wordclock

(left-right clock, LRCK) that is used to set the exact sampling point for the ADC.

The PCM186x family can be a clock master (where BCK and LRCK can be internally divided from a provided

master clock) or can be a clock slave, where all clocks (MCK, BCK and LRCK) must be provided by an external

source.

Unlike many competing devices, the PCM186x family can source its master clock from two different sources,

either an external crystal, or a CMOS level (3.3 V or 1.8 V) clock, eliminating the usual external crystal oscillator

circuit required to source a CMOS clock signal.

The PCM186x also differentiates itself by integrating an on-chip phase locked loop (PLL) that can generate real

audio-rate clocks from any clock source between 1 MHz and 50 MHz. The PCM1860 or PCM1861 hardware-

controlled devices have the ability to detect an absence of MCK in slave mode and automatically generate a

MCK signal. Software-controlled devices, such as the PCM1862, PCM1863, PCM1864 and PCM1865 can have

their PLL programmed to generate audio clocks based on any incoming clock rate. For example, a 12 MHz clock

in the system can be used to generate clocks for a 44.1-kHz system.

9.3.9.2 External Clock-Source Limits

The three different clock sources for the device each have some limits in terms of their input circuitry, as shown

in Table 4. These limits are separate from the internal PLL capability.

On PCM1860 and PCM1861, the highest standard frequency supported by an XTAL is 96 kHz, because the

lowest divider ratio of master clock to LRCK is 256 (24.576 MHz / 256 = 96 kHz). This limitation is not present in

the software-controlled devices because the divider ratio is programmable. However, 192 kHz can be supported

by using an external CMOS source.

Table 4. External Clock-Source Limitations and Notes

CLOCK SOURCE

LIMITS

NOTES

XTAL

15 MHz → 35 MHz

Should be input to SCKI pin. 3.3

V CMOS can be input, even when

IOVDD is 1.8 V

3.3-V CMOS MCLK

1.8-V CMOS MCLK

1 MHz → 50 MHz

Should be input to XI pin.

9.3.9.3 Device Clock Distribution and Generation

PLLs can be used in all modes to generate the clocks required to run both fixed-function DSPs. The dividers are

automatically configured based on the clock rate detection. The clock architecture shown in Figure 33 allows

non-audio clock sources to be used as clock sources and the PCM186x to continue to run in a master mode,

providing all PCM and I²S clocks for other converters in the system.

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PCM186x

PLL_REF_SEL

(Page 0 Reg 0x28)

XO

SCK

SCK_XI_SEL[1:0]

(Page 0 Reg 0x20)

Clock

Divider

(0x23)

ADC_CLK_SRC

(Page 0 Reg 0x20)

MUX

Audio ADC Clocks

PLL Clock

XI

PLL

SCKI

SCK

MUX

Clock

Divider

(0x21)

DSP1_CLK_SRC

(Page 0 Reg 0x20)

K × R / P

DSP #1

BCK

PLL Clock

LRCK

K = J.D

J = 1,2,3, … ,62,63

SCK

Clock

Divider

(0x22)

DSP2_CLK_SRC

(Page 0 Reg 0x20)

D = 0000,0001, … ,9999

R = 1,2,3,4, … ,15,16

P = 1,2, … ,127,128

MUX

DSP #2

PLL Clock

SCKI

MST_SCK_SRC

(Page 0 Reg 0x20)

SCK_OUT_TO_GPIO

MUX

Clock

Divider

PLL Clock

SCKI

Autoset by

Master/Slave mode

MUX

CLK_DIV_PLL_SCK

(Page 0 Reg 0x25)

Autoset by format

Clock

Divider

BCK OUT IN

MASTER MODE

MUX

BCK

CLK_DIV_SCK_BCK

(Page 0 Reg 0x26)

Clock

Divider

LRCK OUT IN

MASTER MODE

MUX

LRCK

CLK_DIV_BCK_LRCK

(Page 0 Reg 0x27)

MASTER MODE ONLY

Figure 33. PCM186x Main Audio Clock Tree and Clock Generation

Target Clock Rates for the ADC, DSP1 and DSP2 can be seen in Table 9 and Table 10. In manual clock

configuration modes, the dividers should be set to achieve these targets. In short, for 2-channel devices, DSP1

and DSP2 should be 256x the sampling rate; for 4-channel devices, DSP1 should be configured for 512x the

sampling rate, and DSP2 should be 256x.

9.3.9.4 Clocking Modes

As shown in Table 5, there are four different clocking modes available on the device that take advantage of the

onboard PLL and clock detection. Advanced clock detection and a smart internal state engine in the PCM186x

can automatically configure the various dividers in the device (see the Device Clock Distribution and Generation

section) with optimized values. Automatic clock configuration is enabled by default, using the register

CLKDET_EN (Page.0, 0x20).

Table 5. PCM186x Clocking Modes

External XTAL/MCK

NAME

DEVICE

BCK, LRCK DIRECTION

PLL CONFIGURATION

INPUT

ADC master mode

ADC slave mode

PCM186x

YES

OUT

IN

Not required

YES

Automatic for standard

audio rates

ADC slave PLL mode

PCM186x

NO

IN

PCM1862

PCM1863

PCM1864

PCM1865

ADC non-audio MCK

YES

OUT

Manual

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9.3.9.4.1 Clock Configuration and Selection for Hardware-Controlled Devices

The PCM1860 and PCM1861 hardware-controlled devices offer both master and slave functionality. In master

mode, a source master clock (of 256x, 384x, or 512x the sampling rate) can be sourced from either an external

crystal (XI/XO) or on an incoming SCK. (see the External Clock-Source Limits section for input rate limitations on

SCK sources) The clock from XI and SCK are OR-ed internally, allowing either to be used.

These hardware-controlled devices can generate the other I²S clocks (BCK and LRCK) in master mode (with

dividers set in MD0 and MD1) or be a clock slave to MCK,BCK and LRCK. In this scenario, the device auto-

detects the clock divider ratio.

In master mode, BCK per LRCK is fixed at 64, and allows up to 32 bits per channel.

Selection of the appropriate master or slave, and clock ratio between MCK and f_Scan be done using MD0 and

MD1.

Table 6 shows the suggested master clock rates for each of the sample rates supported. For slave mode, set

BCK per LRCK to 64.

Table 6. External Master Clock Rate Versus Sampling Frequency

SYSTEM CLOCK FREQUENCY (MHz)

SAMPLING RATE FREQUENCY

(kHz)

256 × f_S

2.048

384 × f_S

3.072

512 × f_S

4.096

8.0

16.0

32.0

44.1

48.0

64.0

88.2

96.0

176.4

192.0

4.096

6.144

8.192

8.1920

12.2880

16.9344

18.4320

24.5760

33.8688

36.8640

—

16.3840

22.5792

24.5760

32.7680

45.1584

49.1520

—

11.2896

12.2880

16.3840

22.5792

24.5760

45.1584

49.1520

—

9.3.9.4.2 Clock Sources for Software-Controlled Devices

The PCM1862, PCM1863, PCM1864, and PCM1865 software-controlled devices support a wide range of options

for generating the clocks required to operate the ADC section, as well as an interface and other control blocks,

as shown in Figure 34.

The clocks for the PLL require a source reference clock. This clock source can be configured on software

devices as the XTAL, SCK or BCK.

These software-controlled devices share a similar clock tree for the generation and distribution of clocks, as

shown in Figure 33.

Register CLK_MODE (Page.0 0x20) is used to configure the clock configuration. Bits [5:7] configure the OR and

MUX for the incoming MCLK.

Register MST_MODE (Page.0 0x20) is used to set the device in master or slave mode. Bits [1:3] set clock

sources for the ADC, DSP1 and DSP2. These can mostly be ignored for the most common applications, but are

provided for advanced users.

Register MST_SCK_SRC (Page.0 0x20) is used to set the source of the SCKO in master mode. The master

mode BCK and LRCK will be a division of this. The selection is either SCKI/XTI or PLL. PLL can be used when

you have a non-audio rate reference clock (BCK or SCKI), as well as when you have an SCKI that is much too

slow for what is required for SCKO.

Most applications will use XTI/SCKI as the source for master mode SCK.

The CLKDET_EN (Page.0, 0x20) register bit (auto clock detector) is important; the clock detector is mainly

functional for slave modes, and for master modes where the master clock is a 256×, 384×, or 512× multiple of

the incoming data rate.

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The relation between the master mode configuration registers is shown in Table 7.

NOTE

Non audio related master clock sources can be used with the PCM186x software -

controlled devices providing the PLL is programmed manually. CLKDET_EN should be set

to 0.

The result of configurations can be checked by reading registers FS_INFO / CURRENT_BCK_RATIO (Page.0

0x73 and 0x74).

NOTE

In master mode on software-controlled devices, only the following BCK to LRCK ratios are

supported: 32x, 48x, 64x and 256x. 128x is not supported

Table 7. Master Mode Clock Configuration Registers

CLOCK MULTIPLEXER

MST_SCK_SRC

DIVIDER

FUNCTION

BITS

Master mode SCK source

FUNCTION

Page 0, register 0x20, bits[5]

BITS

Clock divider of PLL to SCKOUT

divider (for example, master

mode or BCK PLL slave mode

with SCK for the rest of the

system)

CLK_DIV_PLL_SCK

Pg0, reg 0x25, bits[0:6]

Ratio of master clock (SCK) to bit

clock (BCK)

CLK_DIV_SCK_BCK

CLK_DIV_BCK_LRCK

Pg0, reg 0x26, bits[0:6]

Pg0, reg 0x27, bits[0:6]

Ratio of bit clock (BCK) to left-

right clock (LRCK)

PCM186x

PLL_REF_SEL

(Page 0 Reg 0x28)

XO

SCK

SCK_XI_SEL[1:0]

(Page 0 Reg 0x20)

Clock

Divider

(0x23)

ADC_CLK_SRC

(Page 0 Reg 0x20)

MUX

Audio ADC Clocks

PLL Clock

XI

PLL

SCKI

SCK

MUX

Clock

Divider

(0x21)

DSP1_CLK_SRC

(Page 0 Reg 0x20)

K × R / P

DSP #1

BCK

PLL Clock

LRCK

K = J.D

J = 1,2,3, … ,62,63

SCK

Clock

Divider

(0x22)

DSP2_CLK_SRC

(Page 0 Reg 0x20)

D = 0000,0001, … ,9999

R = 1,2,3,4, … ,15,16

P = 1,2, … ,127,128

MUX

DSP #2

PLL Clock

SCKI

MST_SCK_SRC

(Page 0 Reg 0x20)

SCK_OUT_TO_GPIO

MUX

Clock

Divider

PLL Clock

SCKI

Autoset by

Master/Slave mode

MUX

CLK_DIV_PLL_SCK

(Page 0 Reg 0x25)

Autoset by format

Clock

Divider

BCK OUT IN

MASTER MODE

MUX

BCK

CLK_DIV_SCK_BCK

(Page 0 Reg 0x26)

Clock

Divider

LRCK OUT IN

MASTER MODE

MUX

LRCK

CLK_DIV_BCK_LRCK

(Page 0 Reg 0x27)

MASTER MODE ONLY

Figure 34. PLL Clock Source and Clock Distribution

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9.3.9.4.3 Clocking Configuration and Selection for Software-Controlled Devices

9.3.9.4.3.1 Target Clock Rates for ADC, DSP1 and DSP2

The ADC, DSP1 and DSP2 each have specific minimum clock requirements that can be driven from either the

incoming SCK or the output of the PLL, as shown in Table 8.

Table 8. Minimum Required Clock Ratios for ADC, DSP1 and DSP2

CORE

ADC

2-CHANNEL DEVICE RATIO

128x output sampling rate

256x output sampling rate

4-CHANNEL DEVICE RATIO

128x output sampling rate

512x output sampling rate

256x output sampling rate

DSP #1

DSP #2

9.3.9.4.3.2 Configuration of Master Mode

If an external, high-quality MCLK is available (either on the SCK pin or XTAL), then configure the PCM186x to

run in master mode where possible, with the ADC and serial ports being driven from the MCLK or SCK source.

The on-chip DSPs may continue to require clocks from the PLL, as they run from a much higher clock rate.

Clock MUXs and overall configuration can be done in register Page0, 0x20. For the best performance in master

mode, the automatic clock configuration circuitry configures the clocks as shown in Table 9 and Table 10, if the

device is a PCM186x 2-channel or 4-channel, software-controlled device. The tables below show data at 48 kHz

multiples, the ratios for multiples of 44.1 kHz are identical, while the absolute MHz values will be multiples of 44.1

kHz instead of 48 kHz.

This automatic configuration can be bypassed using registers, starting from CLKDET_EN (Page.0, 0x20).

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9.3.9.4.4 BCK Input Slave PLL Mode

The PCM186x software-controlled devices can generate an internal MCLK system clock using the PLL

(referenced from an external input BCK) in slave mode. Supported sampling frequencies are listed in Table 11.

While the PCM186x can support down to 8 kHz, analog performance is not tested at this rate.

Table 11. Auto PLL BCK Requirements

SAMPLING

FREQUENCY

BCK RATIO

TO LRCK

BCK

FREQUENCY

8 kHz

256

64

2.048

1.024

4.096

1.536

2.304

3.072

12.288

3.072

4.608

6.144

24.576

6.144

9.216

12.288

49.152

16 kHz

256

32

48

48 kHz

96 kHz

192 kHz

64

256

32

48

64

256

32

48

64

256

In software SPI or I²C mode, a PCM186x software-controlled device can use the on-chip crystal oscillator, if a

CMOS clock source is not available. Audio clocks can be generated through the PLL from the non-audio

standard CMOS or crystal frequency (and then can be divided down as described previously). This function is not

available in hardware mode.

The 8-kHz sampling rate is only supported if an external MCK is provided. The autodetect and PLL system

support frequencies as low as 32 kHz. Analog performance is not tested in this mode.

The clock tree can also be programmed manually, with the settings shown in Table 12 and Table 13.

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9.3.9.4.5 Software-Controlled Devices ADC Non-Audio MCK PLL Mode

This mode is mainly used for systems driving TDM ports or systems where the MCK is not related to the audio

sampling rate. For example, where the audio ADC must share a clock source with the central processor

(commonly, 12 MHz, 24 MHz, or 27 MHz.)

Under these conditions, set automatic configuration register CLKDET_EN (Page 0, 0x20) to 0, and manually

configure the PLL using registers (Page 0, 0x28 - 0x2D); see Software-Controlled Devices Manual PLL

Calculation. The clock tree must also be set to use the PLL output as the master mode SCKOUT source, and

have the appropriate SCK-to-BCK and BCK-to-LRCK dividers set.

9.3.9.5 Software-Controlled Devices Manual PLL Calculation

The PCM186x has an on-chip PLL with fractional multiplication to generate the clock frequency required by the

audio ADC, modulator and digital signal processing blocks. The programmability of the PLL allows operation

from a wide variety of clocks that may be available in the system. The PLL input supports clocks varying from 1

MHz to 50 MHz, and is register programmable to enable generation of required sampling rates with fine

precision.

The PLL by default is enabled because the on-chip fixed function DSPs require high clock rates to complete all

various decimation, mixing, and level-detection functions. The PLL output clock PLLCK is given by Equation 1:

PLLCKINìRì JD

PLLCKINìR ìK

PLLCK =

or PLLCK =

P

where

•

R = 1, 2, 3, 4, ….. 15, 16

J = 1, 2, 3, 4,...63, and D = 0000, 0001, 0002...9999

K = J.D

P = 1, 2, 3...15

(1)

R, J, D, and P are register programmable. J is the integer portion of K (the numbers to the left of the decimal

point), while D is the fractional portion of K (the numbers to the right of the decimal point, assuming four digits of

precision).

Examples:

If K = 8.5, then J = 8, D = 5000

If K = 7.12, then J = 7, D = 1200

If K = 14.03, then J = 14, D = 0300

If K = 6.0004, then J = 6, D = 0004

When the PLL is enabled and D = 0000 (that is, an integer multiple), the following conditions must be satisfied:

1 MHz ≤ (PLLCKIN / P) ≤ 20 MHz

64 MHz < (PLLCKIN × K × R / P) < 100 MHz

1 ≤ J ≤ 63

When the PLL is enabled and D ≠ 0000 (that is, a noninteger multiple), the following conditions must be satisfied:

6.667 MHz ≤ (PLLCLKIN / P) ≤ 20 MHz

64 MHz < (PLLCKIN x K x R / P) < 100 MHz

4 ≤ J ≤ 11

R = 1

When the PLL is enabled,

f_Sref = (PLLCLKIN × K × R) / (N × P) :

N is selected so that f_Sref × N = PLLCLKIN × K × R / P is in the allowable range.

Example:

MCLK = 12 MHz and f_Sref = 44.1 kHz, (N=2048)

Select P = 1, R = 1, K = 7.5264, which results in J = 7, D = 5264

Example:

MCLK = 12 MHz and f_Sref = 48.0 kHz, (N=2048)

Select P = 1, R = 1, K = 8.192, which results in J = 8, D = 1920

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The PLL can be programmed using page 0, registers 0x28 thru 0x2D. Turn on the PLL using page 0, register

0x28, D(0). The variable P can be programmed using page 0, register 0x29, D(3:0). The variable R can be

programmed using page 0, register 0x2A, D(3:0). The variable J can be programmed using page 0, register

0x2B, D(5:0). The variable D is 14-bits and is programmed into two registers. The MSB portion is programmed

using page 0, register 0x2D, D(5:0), and the LSB portion is programmed using page 0, register 0x2C, D(7:0).

The variable D is set when the LSB portion is programmed.

Values are programmed in the registers in Table 14.

Table 14. PLL Coefficient Registers

REGISTER

FUNCTION

BITS

PLL enable, lock status and

PLL reference

PLL_EN

Page 0, register 0x28

PLL_P

PLL_J

PLL P

PLL J

Page 0, register 0x29

Page 0, register 0x2B

Page 0, register 0x2C (least significant bits)

Page 0, register 0x2D (most significant bits)

Page 0, register 0x2A

PLL_Dx

PLL_R

PLL D

PLL R

9.3.9.6 Clock Halt and Error

The status of the halt and error detector can be read from register CLK_ERR_STAT (Page.0, 0x75).

9.3.9.7 Clock Halt and Error Detect

The PCM186x has a clock error detection block inside that continues to monitor the ratio of BCK to LRCK.

If a clock error is detected (such as an unexpected number of BCKs per LRCK), then the device goes into

standby mode.

If all the clocks are stopped going into the device, then the device shifts into sleep state, and begins

Energysense signal detect mode.

When a clock error occurs, the PCM186x starts the following sequence:

1. Mute audio output immediately (without volume ramp down)

2. Wait until proper clock is supplied (known as Clock Waiting State)

3. Restart clock detection. The PLL and all clock dividers are reconfigured with the result of the detection.

4. Start fade-in

If the device stops transmitting data, the first step is to read CLK_ERR_STAT (Page.0 0x72). The least

significant nibble shows the device status. Value 0x01 suggests Clock Waiting State, at which point the clock

error status can be read in register STATE (Page.0 0x75). The clock detection logic is shown in Table 15.

Table 15. Summary of Clock Detection Logic

SCK

ACTIVE

HALT

BCK

ACTIVE

HALT

LRCK

ACTIVE

HALT

RESULT

No error

ACTION

Normal operation

Clock error

No error

Enter clock waiting state

Enter SLEEP

ACTIVE

HALT

ACTIVE

HALT

ACTIVE

HALT

Enter BCK PLL mode

Enter clock waiting state

Enter SLEEP

HALT

Clock error

HALT

ACTIVE

HALT

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In addition, the device uses an on-chip oscillator to detect errors in the rate of present clocks. That logic is shown

in Table 16.

Table 16. Summary of Clock Error Logic

SCK/LRCK Ratio

BCK/LRCK RATIO

LRCK

ERROR DETECT

ACTION

-

< 8 kHz or > 192 kHz

f_Serror

Enter clock waiting state

Not 128 / 256 /

384 / 512 / 768

Enter the clock waiting state, tie I²S

output to 0

Enter the clock waiting state, tie I²S

output to 0

Enter the clock waiting state, tie I²S

output to 0

Enter the clock waiting state, tie I²S

output to 0

-

8 / 16 / 32 / 44.1 / 48 kHz

88.2 / 96 kHz

SCK error

BCK error

f_Serror

Not 128 / 256 /

384 / 512

-

Not 128 / 256

-

176.4 / 192 kHz

8 / 16 / 32 / 44.1 / 48 / 88.2

/ 96 / 174.6 / 196 kHz

Not 256 / 64 / 48 / 32

Enter the clock waiting state, tie I²S

output to 0

>192 kHz

In an application with a non-audio standard SCK coming into the product, the clock error detection on the SCK

pin can be ignored by disabling the auto clock detector (CLKDET_EN Page.0 0x20).

9.3.9.8 Changes in Clock Sources and Sample Rates

In slave mode, when changing clock sources, the PCM186x requires at least three BCK clocks of no clock or

data for the device to reconfigure after clocks resume (if the device is in auto clock config mode).

For example, auto clock config mode: StateA = 48 kHz, change to StateB = 44.1 kHz

For changing from state A to State B:

•

Leaving State A

Hold clocks (or HiZ from external) for 3 BCK minimum

Change clocks

Allow ~100 µs (at least 3 BLKs at 48 kHz) for the device to reconfigure

Data ramp back in on zero-crossing ramp (if zero crossing has not been disabled in software mode)

Transition to State B complete

In master mode, simply switching the I/O pins on the hardware-controlled devices, or changing the sampling rate

register should change the sampling rate.

NOTE

Hardware-controlled devices cannot switch from XTAL master mode to external slave

mode because the XTAL continues clocking the internal SCLK and not be in sync to the

new external clocks. However, this switch can be done in software mode.

9.3.10 Analog-to-Digital Converters (ADCs)

9.3.10.1 Main Audio ADCs

The SNR of the primary ADCs in the PCM186x are 103 dB (for PCM1860, PCM1862, PCM1864), or 110 dB (for

PCM1861, PCM1863, PCM1865), with 40-kHz bandwidth that is tightly coupled to dedicated PGAs and input

multiplexers. Often in this document, references are made to ADC1L and ADC1R (or CH1_L and CH1_R), the

main left and right ADCs present in the PCM1862, PCM1863, PCM1864 and PCM1865. References to ADC2L

and ADC2R are the other pair of left and right ADCs present only in the PCM1864 and PCM1865.

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9.3.10.2 Secondary ADC: Energysense and Analog Control

The PCM186x has a secondary ADC, shown in Figure 35, that is used for signal level detection or dc level

change detection.

PCM186x

DSP#1

Decimation

DSP#2

VINL1/VIN1P

VINL2/VIN1M

VINL3/VIN4P

VINL4/VIN4M

VINR1/VIN2P

VINR2/VIN2M

VINR3/VIN3P

VINR4/VIN3M

Energysense Loss of

Signal Flag

Trigger Mask Register

(SIGDET_TRIG_MASK)

Status Register

(SIGDET_STAT)

4f_S

Audio

ADC

HPF

Filter

8:1

MUX

Sticky

Registers ⁽¹⁾

4f_S

Signal Resume or Present Flag

Control Voltage Change Flag

Secondary

ADC

LPF

HPF

SIGDET_CH_MODE

[7:0]

Scan All

Channels

ADC

Master

Clock

Interrupt

Controller

INTx

On-Chip

Oscillator

1/8

Sleep

Mode

(1) Reset ports not shown.

Figure 35. Secondary ADC Architecture

The secondary ADC has two main purposes in the PCM186x family. The primary purpose is to act as a low

power signal detection system, to aid with system wakeup from sleep. TI calls this functionality energysense.

Other functionality includes the ability to use any spare analog inputs as generic ADC inputs, for connection to

simple analog sources, such as voltages from control potentiometers. TI calls this functionality controlsense or dc

control.

The secondary ADC is a one-bit, delta-sigma type ADC. The sampling rate is directly connected to the main ADC

audio sampling clocks during ACTIVE functionality. When the device is in sleep state, then the secondary ADC

switches the clock source to an on-chip oscillator (if there are no other clock sources).

In sleep mode, the inputs are all treated as single-ended inputs. Differential inputs are not supported in this mode

because the PGA must be powered up, and thus, consume more power.

In active mode, energysense audio signal detection on any channels other than the primary is not available;

however, other inputs can be read using the secondary ADC channel driven in controlsense mode.

In sleep mode, each input pin can be configured to perform either energysense or controlsense. Both functions

can generate interrupts when their thresholds are crossed. All inputs will be cycled through and converted

continuously, performing either an enerysense or a controlsense function.

In active mode, any dc based controls will either need to be polled continuously by the systems host, or

streamed out continuously in a 6ch TDM mode. In an application, this may mean that the main input is being

converted, while the system battery level, or analog volume control knob position is polled using controlsense.

To make the secondary ADC as flexible as possible in both energysense and controlsense modes, the following

controls and coefficients are available in the register map. More details on each are in the relevant following

sections.

•

Coefficients for the secondary ADC low-pass filter

Coefficients for the secondary ADC high-pass filter

Reference voltage and interrupt voltage delta for each input in controlsense mode

Signal loss conditions (time and threshold)

Signal resume conditions (threshold)

Interrupt behavior (for example, ping every x ms if host does not clear)

Scan time for each single ended input

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9.3.10.2.1 Secondary ADC Analog Input Range

To match the dynamic range of the secondary ADC to an incoming line level signal, an overall attenuation is

applied to the incoming signal. This attenuation is also present in controlsense mode. The impact of this is that

the secondary ADC in controlsense mode can only detect control signals up to 4.3 V. Exact values will vary a

small amount from device to device along with the gain error.

Input impedance of the secondary ADC is designed to be 20 kΩ.

9.3.10.2.2 Frequency Response of the Secondary ADC

The natural response of the secondary ADC is not flat by frequency. However, the frequency response can be

flattened, so that all frequencies are equally sensitive to the energysense detector by modifying the LPF or HPF

biquads in the DSP.

9.3.10.3 Secondary ADC Controlsense DC Level Change Detection

This function is used for external analog controls, such as potentiometers to set volume, tone control, or a

sensor. The data for control sense has no high pass filter applied to it, even if the main audio path does have a

HPF enabled.

AS shown in Figure 36, there are two parameters for the dc level change detection: reference level

(REF_LEVEL) and difference level (DIFF_LEVEL). Each input pin (input 1 through 8) has a different reference

and difference level.

(1) DIFF_LEVEL > 0

REF_LEVEL

(2) DIFF_LEVEL < 0

Time

An interrupt is generated

Figure 36. DC Detection Function

Users set a reference point, and a difference point. If the voltage at the control point crosses the difference point

then an interrupt is driven from the device. This is useful for filtering out noise, as well as reducing the load on

the host processor for controls that tend to be set and forget (such as volume).

The data from the secondary ADC can also be streamed out of the device in TDM form and directly from the I²C

register map. AUXADC_DATA_CTRL (Page.0 0x58) is used to configure and check the status of the DC

detector.

This feature (thresholds and interrupts) is available in both active and sleep modes. In sleep mode, the device

automatically scans through each channel designated a controlsense input. In active mode, the scanning will

need to be done manually by a host microcontroller by modifying the SEC_ADC_INPUT_SEL (Page.0, 0x0A)

register.

Most applications requiring the use of

a

potentiometer for control can simply use the

SIGDET_DC_LEVEL_CHx_x registers to read the 8-bit value. To enable the SIGDET_DC_LEVEL_CHx_x

registers to work, then the DC_NOLATCH AUXADC_DATA_CTRL (Page.0, 0x58, B[7]) should be set to 1, and

the appropriate input pins should be set to controlsense inputs SIGDET_CH_MODE (Page.0, 0x30)

Direct 16-bit two's compliment reads from the secondary ADC can be done using AUXADC_DATA_CTRL

(Page.0, 0x58) includes a latch function that is used to read the data the secondary ADC on demand in 16-bit

two's compliment format from registers 0x59 and 0x5A.

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9.3.11 Energysense

Energysense functionality has been added to the PCM186x to aid with auto-sleep and auto-wakeup for end

equipment systems that are expected to be sold within the European Union. The latest Ecodesign legislation in

Europe has demanded that products consume less than 500 mW in standby. Most off-the-shelf external power

adaptors can consume 300 mW when idling, leaving the system with only 200 mW available. In many systems

that require that almost everything be powered down in sleep mode after there is no more content to be played,

and then to be powered back up when signal enters the system again.

Energysense is designed to work in collaboration with a microcontroller to trigger interrupts notifying the

microcontroller to change the state of the PCM186x, and the rest of the board (for example, amplifiers, and so

on). The PCM186x does not automatically switch between sleep and wake modes.

Energysense is split into two functions: signal loss flag and signal resume flag. Both are available on the

PCM186x software-controlled devices. The PCM1860 and PCM1861 only support signal resume, as shown in

Table 17. By default, the signal resume threshold is set at –57 dBFS. Signal resume (autowakeup) only functions

when the device has been set to sleep.

Table 17. Energysense States

MODE

PURPOSE

CONDITIONS

POSITIVE OUTCOME

WORST CASE

SLEEP

Detect Input Signal and Wake up BCK and LRCK stopped (not locked) or

Host Wakes and services interrupt (reads

register)

Host Doesn't respond or start clocks.

(Signal Detect from SLEEP

Mode)

register Set.

Trigger Interrupt when input crosses

above (threshold)

Host Starts BCK/LRCK. (Moving system to

ACTIVE mode) or writes to register.

PCM186x keeps triggering interrupts until

host responds.

Trigger for 1ms every X seconds until

clocks start (x=1 by default)

ACTIVE

(Signal Loss over time

Mode)

Detect content below (threshold) BCK and LRCK are currently running

System can choose to go to sleep or not. If

not, reset interrupt

If system does not sleep, remain in Mode

2, and prompt every Y.

Assist system to sleep after

If no content above -(threshold) dB for Y If System decides to sleep, stop BCK/LRCK.

MCU will need to mask that interrupt.

audio inactivity (for example,

Source is off, but speaker still

on)

minutes, drive interrupt.

This will move PCM186x to SLEEP mode.

9.3.11.1 Energysense Signal Loss Flag

The main ADC constantly monitors the input signal level while in ACTIVE mode. Should the input level remain

below a register defined threshold (for example –60 dB - Virtual Coefficient 0x2C, programmable through Page

1.) for a register defined amount of time (for example 1 minute - set by SIGDET_LOSS_TIME (Page.0, 0x33) ),

an interrupt can be generated.

If the system MCU decides to move to sleep mode, the PCM186x can be moved to SLEEP by stopping

BCK/LRCK or using PWRDN_CTRL (Page.0, 0x70); see Table 17 for details.

If BCK and LRCK are stopped by the host after the interrupt, the device goes to the sleep state as shown in

Figure 37. Otherwise, the interrupt continues for a few seconds, defined by SIGDET_INT_INTVL (Page.0, 0x36)

unless the interrupt and timeout counter is reset.

Stopped BCK and LRCK by the Host

Time of loss of signal (Y minutes )

Sleep State

Threshold

Level

INT

1 ms

Figure 37. Energysense Signal Loss

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In a typical application, the host MCU will note and reset this register multiple times until a system sleep number

is hit. For example, a 5-minute signal loss could be implemented by using the default 1-minute timeout on the

PCM186x, and counting five interrupts. An example is shown in Figure 38.

Time of Loss of Signal (Y minutes)

Y minutes

1 ms

Figure 38. Interrupt Behavior for Signal Loss

Alternatively, the SIGDET_LOSS_TIME (Page.0, 0x33) register in the device can be changed from one minute

(default) to five minutes. This timeout is sample rate dependant. The expected sample rate is 48 kHz, but should

the system be running at 96 kHz, then the time will be halved. (192 kHz = quarter the register setting).

The duration of the interrupt can also be modified using INT_PLS (Page.0 0x62) to be pulses, or to be a sticky

flag, where sticky is defined as the interrupt is on until cleared.

9.3.11.2 Energysense Signal Detect Circuitry

In sleep mode (BCK and LRCK stop, or by register), the PCM186x monitors the signal level or dc level change

using the secondary ADC. All eight channels are converted one after the other in a circular manner. The scan

time is specified with register SIGDET_SCAN_TIME. All eight channels are measured, even if some have the

respective interrupt outputs muted. Accuracy and frequency response are a function of scan time. A long scan

time allows detection of lower frequency content. The energysense signal wakeup logic is shown Figure 39.

Scanning All Channels

1 ms

Interval Time (X sec)

Figure 39. Energysense Signal Wakeup Logic

There is a balance between lowest frequency detectable, and time on that particular channel. There are three

options in register SIGDET_INT_INTVL (Page.0 0x36):

•

50-Hz detect (160 ms per channel)

100-Hz detect (80 ms per channel)

200-Hz detect (40 ms per channel)

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9.3.11.2.1 Energysense Threshold Levels for Both Signal Loss and Signal Detect

There are two threshold levels used for Energysense, as shown in Figure 40. One is the loss of signal level,

another one is the resume of signal level.

RESUME Level

LOSS Level

Figure 40. Dual Thresholds for Energysense

As both thresholds are DSP based, their coefficients are stored in virtual coefficient space that is programmed

through the device register map.

For example, to change the resume threshold value to –30 dB (0x040C37):

Write 0x00 0x01 ; # change to register page 1

Write 0x02 0x2D ; # write the memory address of resume threshold

Write 0x04 0x04 ; # bit[23:15]

Write 0x05 0x0C ; # bit[15:8]

Write 0x06 0x37 ; # bit[7:0]

Write 0x01 0x01 ; # execute write operation

9.3.11.3 Programming Various Coefficients for Energysense

Programming the DSP coefficients for the energysense secondary ADC is done through the indirect virtual

programming registers in Page1. The low-pass filter (LPF) and high-pass filter (HPF) coefficients can be written

to flatten out the frequency response, as well as the energysense loss and resume thresholds. Visually, one can

imagine the DSP flow as shown in Figure 41.

DSP#1

DSP#2

Decimation

Filter

Energysense

Loss-of-Signal Flag

HPF

Main ADC

Signal Resume of

Present Flag

Secondary

ADC

LPF

Control Voltage

Change Flag

SGIDET_CH_Mode[7:0]

Figure 41. Energysense Process Flow

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To flatten out the response of the secondary ADC, so that all frequencies are detected evenly, write the biquads

shown in Table 18 to the virtual DSP memory, using the techniques discussed in the Programming DSP

Coefficients on Software-Controlled Devices section.

Table 18. Secondary ADC Biquad Coefficients at 48-

kHz Sampling

COEFFICIENT

LPF_B0

LPF_B1

LPF_B2

LPF_A1

LPF_A2

HPF_B0

HPF_B1

HPF_B2

HPF_A1

HPF_A2

VIRTUAL RAM ADDRESS

0x20

0x21

0x22

0x23

0x24

0x25

0x26

0x27

0x28

0x29

9.3.12 Audio Processing

Both DSP1 and DSP2 are fixed function processors that are not custom-programmable. They are used in this

device to perform multiple filtering, mixing functions, signal detection and housekeeping functions. Programming

the DSP coefficients is done indirectly using registers on Page1. The data and target DSP memory address are

stored in registers, and once the DSPs are ready for the data (that is done by request) the data is then latched

into the DSP memory.

This indirect method of programming the DSP allows multiple registers to be written, without consuming valuable

register map space. More details can be found in the Programming DSP Coefficients on Software-Controlled

Devices section.

9.3.12.1 DSP1 Processing Features

9.3.12.1.1 Digital Decimation Filters

The main audio path uses a selectable decimation filter used to convert the high-data-rate modulator to I²S rates.

A choice between a classic FIR response and a low-latency IIR response is available. A high-pass filter, separate

from that used for the secondary ADC, is also available to remove any dc bias that may be present in the signal.

This feature is enabled by default.

Details can be found in the DSP_CTRL register (Page.0, 0x71).

9.3.12.1.2 Digital PGA

As discussed in the Programmable Gain Amplifier section, the digital PGA gain can be controlled by the auto

gain mapping function, that will use the analog gain settings in register PGA_VAL_CH1_L (Page.0 0x01) and

related registers to achieve the target gain with a combination of digital and analog gain. However, digital gain

can be also controlled directly by disabling the auto gain mapping function using register

PGA_CONTROL_MAPPING (Page.0 0x19). Manual update of digital PGA is only available in 4-channel devices

because the digital PGA gain is fixed to 0 dB when manual gain mapping is enabled.

9.3.12.2 DSP2 Processing Features

9.3.12.2.1 Digital Mixing Function

This function allows post ADC mixing, as well as ADC + incoming I²S mix. Volume control functionality can be

performed prior to outputting the signal to an I²S DAC or Amplifier.

Gain range is from –120 dB to +18 dB (4.20 format). Phase Inversion can be done by performing the two's

compliment of the positive gain coefficient. two's compliment can be performed by inverting all bits in the binary

coefficient, and adding 1 to the LSB.

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As the DSP coefficients are directly written, no soft ramping is available. Use of I²S receive sacrifices two digital

mic channels due to pin limitations.

Coefficients are written indirectly to virtual memory addresses using the registers on page 1. Details of the

registers are shown in the Register Maps section.

A diagram of the digital mixing functionality is shown in Figure 42.

MIX1_CH1L

Ch1[L]

MIX1_CH1R

Mute

Ch1[R]

MIX1_CH2L

Ch2[L]

MIX1_CH2R

Ch2[R]

MIX1_I2SL

I2S[L]

I²S Tx1

DOUT1

MIX1_I2SR

I2S[R]

Ch1[L]

Ch1[R]

Mute

Ch2[L]

Ch2[R]

I2S[L]

Mixer 2

Mixer 3

Mixer 4

I2S[R]

Ch1[L]

Ch1[R]

Mute

Ch2[L]

Ch2[R]

I2S[L]

I2S[R]

I²S Tx2

DOUT2

Ch1[L]

Ch1[R]

Mute

Ch2[L]

Ch2[R]

I2S[L]

I2S[R]

Figure 42. Digital Mixer Functionality

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9.3.13 Fade-In and Fade-Out Functions

The PCM186x has fade-in and fade-out functions on DOUT to avoid pop noise. This function is engaged on

device power up or down, and mute or unmute. The level changes from 0 dB to mute, or mute to 0 dB, are

performed using pseudo S-shaped characteristics calculation with zero-cross detection. Because of the zero-

cross detection, the time needed for the fade-in and fade-out depends upon the analog input frequency (f_IN).

Fade takes 48 / f_INuntil processing is completed. If there is no zero cross during 8192 / f_S, DOUT is faded in or

out by force during 48 /f_S(TIME OUT). Figure 43 illustrates the fade-in and fade-out operation processing.

Fade-In Complete

Fade-In Start

Fade-Out Start

Fade-Out Complete

DOUT

(Contents)

BPZ

48/f_inor 48/f_S

Figure 43. Fade-In and Fade-Out Operations

9.3.14 Mappable GPIO Pins

All the GPIO pins on thePCM186x software-controlled devices can be configured for various functions. They can

each have their polarity inverted to make control of following circuits easier. See the control registers for each

GPIO for a better explanation of mapping. (such as GPIO1_FUNC at Page.0 0x10)

The type of function can also be controlled, including such behavior as regular inputs, inputs with toggle

detection, or sticky bits. The device can also be configured as an open drain output, so that multiple interrupt

outputs from different devices in the system can be connected together.

9.3.15 Interrupt Controller

The hardware-controlled PCM1860 and PCM1861 has the energysense signal detect as the default output on

the INT pin. There are no other interrupt sources. The INT pin on the PCM1860 and PCM1861 is also used to

put the device into power-down mode. Figure 44 shows the interrupt logic

PCM186x

Software-Controlled Devices

Enable bits

Sticky Registers

Energysense

Pulse Duration

Polarity

DC Level Change

Polarity

Control

Interrupt

Generator

INT

Post PGA Clipping

Detection

DIN Toggle

Status

Clear Bits

Figure 44. Interrupt Logic

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The software-controlled devices have multiple signals that can be mapped to the interrupt outputs. These

include:

•

Energysense (default)

Secondary ADC controlsense interrupt

Post PGA clip

DIN toggle

The Interrupt controller has the following features

•

The Interrupt sources can be filtered by the enable register (INT_EN).

The Interrupt flags can be monitored by reading the status register (INT_STAT).

The interrupt flags can be cleared by writing the status register.

The polarity of the interrupt signal can be changed between active high, active low and Open Collector (High

Impedance is pulled to GND) (INT_PLS).

•

The pulse width of the interrupt signal can be changed between 1ms, 2ms, 3ms and 4ms.

The interrupt controlled cannot remain asserted, the status bits can be sticky, but the interrupt pin itself has

no hold function.

Using a combination of these features, as well as the interrupt sources, allows the PCM186x to alert a host

microcontroller of an event, using whichever polarity signal required (pull high, pull low, Hi-Z open collector). The

host controller can then communicate with the device to poll the interrupt flag register to find out what happened.

Additional registers can then be read for more details. (For instance, which input triggered an energysense

event.). From a register point of view, there is no difference between INT A, INT B and INT C logic, other than

their signaling (positive, negative or open drain).

9.3.15.1 DIN Toggle Detection

DIN toggle can be used to trigger from an external PCM audio data source or any other digital data source (such

as a IR remote control UART stream) where there is a toggling logic state. (from 0 V to 3.3 V, or vice versa). All

GPIO pins support DIN toggle detection, other than GPIO2.

This function is only enabled in sleep mode.

9.3.15.2 Clearing Interrupts

Each Interrupt type has a specific method to clear. When clearing or resetting an interrupt, always remove the

source of the interrupt first.

9.3.15.2.1 Reset Energysense Loss (in Active Mode)

Background: In active mode, the threshold is set to a system-level defined loss threshold (for example, –80

dBFS), and the timeout set to 1 minute.

After 1 minute, the interrupt triggers. To reset energysense loss, take the following steps:

Step 1: Disable the interrupt in INT_EN (Page.0 0x60)

Step 2: Look at INT_STAT (Page.0 0x61). What is the energysense interrupt?

The interrupt status register INT_STAT (Page.0 0x61) is sticky in active mode. After being set, this register

cannot be reset without clearing SIGDET_STAT (Page.0 0x32).

Step 3 Option 1:The easiest way to clear the register is to move to sleep mode. PWRDN_CTRL (Page.0

0x70)

Step 3 Option 2: To ignore the interrupt, or to clear it and remain in active mode (and wait another minute)

Step 4: Set the signal loss threshold to –110 dB (so that the interrupt is no longer generated by internal logic)

Step 5: Clear the SIGDET_STAT (Page.0 0x32) register by:

Write 0xFF to SIGDET_STAT (Page.0 0x32)

Read SIGDET_STAT (Page.0 0x32). The register should be 0x00

Step 6: Now set signal loss threshold to the original –80 dBFS

Step 7: Enable the interrupt again INT_EN (Page.0 0x60)

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9.3.15.2.2 Reset Energysense Detect (In Sleep Mode)

Background: The device is in sleep mode, with the wake threshold set as a DSP memory coefficient.

INT_STAT (Page.0 0x61) is sticky and SIGDET_STAT (Page.0 0x32) is not sticky in this mode. The Interrupt

pin triggers dynamically as the audio crosses the threshold. The SIGDET_STAT (Page.0 0x32) register

shows which input is causing the input only while that particular input is causing the interrupt. The INT_STAT

(Page.0 0x61) register shows the energysense interrupt has been triggered until it is cleared.

The system host controller responds to the interrupt in one of two ways:

Option 1: Move to active mode. PWRDN_CTRL (Page.0 0x70)

Option 2: Ignore the interrupt in the system controller, or disable the interrupt for a set amount of time using

INT_EN (Page.0 0x60)

9.3.15.2.3 Reset Controlsense (Active and Sleep Modes)

If a potentiometer has been moved and the interrupt asserts, the following steps should be taken:

Step 1: Read the INT_STAT (Page.0 0x61) to confirm it is a controlsense event.

Step 2: Disable the controlsense interrupt temporarily: INT_EN (Page.0 0x60)

Step 3: Read the SIGDET_STAT (Page.0 0x32) to see which channel changed

Step 4: Read the appropriate SIGDET_DC_LEVEL_CHx_x to find the new value

Step 5: Copy the value to the appropriate SIGDET_DC_REF_CHx_x register. This action should stop the

interrupt being caused internally.

Step 6: Re-enable the Interrupt INT_EN (Page.0 0x60)

9.3.15.2.4 Reset DIN Toggle (In Sleep Mode)

Background: The DIN toggle mode can detect if there is a toggle on an external data pin. For The INT pin will

pulse as and when the Internal ADC flow clips. Despite the dynamic nature of the interrupt output pin, INT_STAT

(Page.0 0x61) is a sticky register. To clear this register, take the following steps:

Step 1: Read the INT_STAT (Page.0 0x61) to confirm it is a PGA clipping event.

Step 2: Lower the gain of the current input channel INT_EN (Page.0 0x60)

Step 3: Reset the interrupt using INT_EN (Page.0 0x60). Set bit 5 to 0, then back to 1

Step 4: Bit 5 of INT_STAT (Page.0 0x61) should now be 0. If not, go to step 2 again.

9.3.15.2.5 Reset PGA Clipping (Active)

Background: PGA Clipping is a dynamic interrupt. The INT pin will pulse as and when the Internal ADC flow

clips. Despite the dynamic nature of the interrupt output pin, INT_STAT (Page.0 0x61) is a sticky register. To

clear this register, take the following steps:

Step 1: Read the INT_STAT (Page.0 0x61) to confirm it is a PGA clipping event.

Step 2: Lower the gain of the current input channel INT_EN (Page.0 0x60)

Step 3: Reset the interrupt using INT_EN (Page.0 0x60). Set bit 5 to 0, then back to 1.

Step 4: Bit 5 of INT_STAT (Page.0 0x61) should now be 0. If not, go to step 2 again.

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9.3.16 Audio Format Selection and Timing Details

9.3.16.1 Audio Format Selection

Format selection for the PCM1860 and PCM1861 is controlled using a hardware pin configuration. There is a

choice of left-justified data (known as LJ) or I²S.

On the PCM186x software-controlled devices, format selection is done with the registers in I2S_FMT (Page.0

0x0B), which offers additional support for right-justified (RJ) and time division multiplexed (TDM) data for multiple

channels.

The PCM186x software-controlled devices also offer an additional DOUT pin that can be driven through the

GPIO pins. For an example, see the register details at GPIO1_FUNC (Page.0 0x10).

9.3.16.2 Serial Audio Interface Timing Details

2

FORMAT 0: FMT = Low = 24-Bit, MSB-First, I S

LRCK

BCK

Left-Channel

Right-Channel

DOUT

1

2

3

22 23 24

LSB

1

2

3

22 23 24

LSB

MSB

FORMAT 1: FMT = High = 24-Bit, MSB-First, Left-Justified

LRCK

BCK

Left-Channel

Right-Channel

DOUT

1

2

3

22 23 24

LSB

1

2

3

22 23 24

LSB

1

MSB

Figure 45. Audio Data Format

(LRCK and BCK Work as Inputs in Slave Mode and as Outputs in Master Mode)

9.3.16.3 Digital Audio Output 2 Configuration

The PCM186x four-channel software-controlled devices offer an additional DOUT through the use of a GPIO that

has its rate synchronized with the primary DOUT. DOUT2 is configured using the digital mixer, shown in Digital

Mixing Function. In TDM Modes, DOUT2 is not available.

The GPIO used for DOUT2 can be set using registers. GPIO0 is used for SPI-MOSI in SPI mode, however, it

can be retasked for DOUT2 duties if MOSI is not required.GPIO0_FUNC (Page.0 0x10), GPIO1_FUNC (Page.0

0x10), GPIO2_FUNC (Page.0 0x11), or GPIO3_FUNC (Page.0 0x11) can be used to set GPIOx to DOUT2

9.3.16.4 Time Division Multiplex (TDM Support)

The software-controlled devices can support TDM for both slave and master modes. In many devices, this is also

known as DSP Mode.

Data on the TDM stream can be between two and four channels of audio content from each PCM186x mixer

output. By default, each mixer passes data from the respective ADC in a bypass or passthrough configuration.

Data from the secondary ADC can also be output on channels five and six. The frame rate in TDM mode fixed to

256 BCK per frame, and the duty cycle of the LRCK (or frame sync signal) can be either a 50 / 50 duty cycle, or

a single bit at the start of the frame.

Up to 32 bits per channel are available. In 32-bit mode, 24 bits of data and 8 bits of padding (zero) are used per

channel. In 24-, 20-, and 16-bit data, no padding is provided between channels. In 24-bit mode, channel two

begins transmitting on bit clock 25.

In data formats lower than 24 bits, the data is simply truncated, not dithered to 16 bits.

In slave mode, only a rising edge on the first bit is required to start the frame. (similar to MSB-first, left-justified).

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In master mode, only a 50% duty cycle on the output is possible. This configuration is made by setting

TDM_LRCK_MODE (Page.0 0x0B) to 0.

Typically when interfacing to a DSP, only the rising edge on the first bit of data of the frame is required.

While the device is not transmitting data (but still being clocked), the DOUT pin will be Hi-Z (high impedance) to

allow other devices on the bus to transmit their data.

TDM mode is configured using I2S_FMT (Page.0 0x0B), TDM_LRCK_MODE (Page.0 0x0B), TDM_OSEL

(Page.0 0x0C)

The timing limits for the interface signals are defined by the Serial Audio Data Interface Configuration section

with the addition that the BCK period minimum must be at least 1 / (512 × f_S) to make sure that data is clocked in

correctly.

The audio format is shown in Figure 46. The 24-bit data can fit up to 10 channels of data in a 256x bitclock

stream; however, the I²C-controlled devices only have two possible I²C addresses. The eight channels of audio

data should be no issue.

BCK (fixed at 256 × f_S)

LRCK / Frame Sync

50% Duty Cycle (Master Mode)

Example

24-Bit

TDM Mode

LRCK / Frame Sync

1BCK or 50% Duty Cycle (Slave Mode)

24-Bit

DATA

Ch1 data

(24 bits)

Ch2 data

(24 bits)

Ch3 data

(24 bits)

Ch4 data

(24 bits)

Ch5 data

(24 bits)

Ch6 data

(24 bits)

Ch7 data

(24 bits)

Ch8 data

(24 bits)

Ch9 data Ch10 data EMPTY Ch1 data

No Gaps

(24 bits)

(24 bits) (16 bits) (24 bits)

BCK (fixed at 256 × f_S)

LRCK / Frame Sync

50% Duty Cycle (Master Mode)

Example

32-Bit

Mode

LRCK / Frame Sync

1BCK or 50% Duty Cycle (Slave Mode)

24-Bit

DATA

Ch1 data

8

Ch2 data

8

Ch3 data

8

Ch4 data

8

Ch5 data

8

Ch6 data

8

Ch7 data

8

Ch8 data

8

8-Bit Gaps

(24 bits) bits (24 bits) bits (24 bits) bits (24 bits) bits (24 bits) bits (24 bits) bits (24 bits) bits (24 bits) bits

Figure 46. Audio Format for TDM

NOTE

TDM mode can only function up to 96 kHz sampling rate when IOVDD is 1.8 V. This is

due to an I/O limitation of 25 MHz at 1.8 V.

9.3.16.5 Decimation Filter Select

The PCM186x offers a choice of two different digital filters, a Classic FIR response and a low latency IIR.

9.3.16.6 Serial Audio Data Interface Configuration

The PCM186x devices interface to the audio system through LRCK, BCK and DOUT.

The PCM186x hardware-controlled devices are configured using pin MD4 to select between left-justified data and

I²S.

The PCM186x software-controlled devices are configured using register I2S_FMT (Page.0 0x0B). Use register

I2S_TX_OFFSET (Page.0 0x0D) when dealing with TDM systems to offset the data transmit.

In addition, the offset required for receiving 24-bit data is programmed using RX_TDM_OFFSET (P0, R0x0E).

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9.4 Device Functional Modes

9.4.1 Power Mode Descriptions

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The PCM186x family has multiple power modes: active, sleep, idle, and standby. Table 19 lists the power modes

and functions.

•

Active mode: describes the mode where the device is targeting full performance and functionality.

Idle mode: describes the mode where the digital output is muted and the analog side (such as PGAs) are still

powered up.

•

Sleep mode: describes the mode where the main ADCs are not in use, but the device continues to do

Energysense input level detection.

Standby mode: drops the power into an ultra-low power mode where only the control port is available.

Table 19. Power Modes

ACTIVE OR IDLE

FUNCTIONS

SLEEP (Energysense)

STANDBY

(MUTE)

ANALOG FUNCTIONS

Programmable Gain

Amps

ON

OFF

ADC

ADC Reference

CMBF

ON

OFF

ON

OFF

ON

Reference

ON

Mic Bias

OFF

Secondary ADC PGA

Secondary PGA

ACCESSORY FUNCTIONS

LDO

ON

Oscillator

Clock Halt Detection

PLL

ON

OFF

5% ON (Control Port

Only)

Digital Cores

ON

20% ON

9.4.1.1 PCM1860 and PCM1861 Hardware Device Power Down Functions

9.4.1.1.1 Enter Standby Mode (From Active Mode)

The external host should drive the INT pin (GPIO3) high (whilst there is no interrupt pending) to place the device

in Idle mode.

The INT pin is configured as an energysense interrupt output on the hardware-controlled device; therefore, the

external host microcontroller should use it as multi-function pin. (MCU pin configured as INPUT when no

requirement exists to move to standby, MCU pin as OUTPUT driving HIGH when a need exists to place the

device in an idle state.)

NOTE

While the device is driving its interrupt high, any external voltage on the INT pin will be

ignored by the device, until the interrupt event (and pulse) is finished.

9.4.1.1.2 Exit From Standby Mode Back to Active

The external MCU host releases the INT pin (GPIO3). This typically involves reconfiguring the external MCU

GPIO into an INPUT or HI-Z.

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9.4.1.1.3 Enter or Exit Sleep or Energysense Mode to Active

Enter sleep mode: Halt BCK and LRCK

Exit sleep mode: Resume BCK and LRCK

9.4.1.2 PCM186x Software Device Power Down Functions

9.4.1.2.1 Enter or Exit Stand-by Mode

Enter standby mode: Send power down command by writing register PWRDN_CTRL (Page.0 0x70)

Exit standby mode: Send power up command by writing register PWRDN_CTRL (Page.0 0x70)

9.4.1.2.2 Enter Sleep Mode

Send sleep command by writing register PWRDN_CTRL (Page.0 0x70) or

Halt BCK and LRCK when I²S is configured as I²S slave mode

9.4.1.2.3 Exit Sleep Mode

Send resume from (exit) sleep command by writing register PWRDN_CTRL (Page.0 0x70) or

Resume BCK and LRCK when I²S is configured as I²S slave mode

9.4.1.3 Bypassing the Internal LDO to Reduce Power Consumption

The PCM186x has an integrated LDO allowing single 3.3-V supply operation. However, developers desiring to

minimize power consumption can bypass the on-chip LDO and provide 1.8 V to IOVDD and to LDO under the

following conditions:

•

TDM mode is limited to BCK driving a maximum of 25 MHz, because the BCK and DATA cells cannot exceed

25 MHz when IOVDD is 1.8 V. Consequently, a maximum of 96-kHz sampling frequency operation is

possible.

•

IOVDD MUST be 1.8 V along with LDO, if an external 1.8 V supply is used to bypass the internal LDO.

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9.5 Programming

9.5.1 Control

9.5.1.1 Hardware Control Configuration

PCM186x devices require the following functions to be configured on startup. Hardware-controlled devices

require a subset of these configurations:

•

Control interface type and address for PCM186x software-controlled devices

The clock mode and rate (automatic in slave mode, or divider ratio in master mode) for hardware-controlled

devices. For more details see the Clocks section.

•

The interface audio data format for hardware-controlled devices.

Digital filter selection (FIR or IIR) for hardware-controlled devices; requires a power cycle to change.

Analog input channels and PGA gain for hardware-controlled devices.

9.5.1.2 Software-Controlled Device Configuration

PCM186x software-controlled devices are configured and controlled by using either I²C or SPI using MD0 and

MD1. Table 20 shows the MD0 control protocols, and Table 21 shows the MD1 mode selection.

Table 20. MD0: Control Protocol Select

MD0

Low (or floating)

High

Control Protocol

I²C Mode

SPI Mode

Table 21. MD1: I²C Address or SPI Chip Select

MODE

I²C

MD1 USE

STATIC MD1 VALUE

CONFIGURATION

I²C Address: 0x94

I²C Address: 0x96

N/A

Address pin

Low

High

N/A

SPI

MS (SPI Chip Select)

9.5.1.3 SPI Interface

The SPI interface is a 4-wire synchronous serial port that operates asynchronously to the serial audio interface

and the system clock (SCK). The serial control interface is used to program and read the on-chip mode registers.

The control interface includes MISO, MOSI, MC, and MS. MISO (master in slave out) is the serial data output,

used to read back the values of the mode registers; MOSI (master out slave in) is the serial data input, used to

program the mode registers.

MC is the serial bit clock, used to shift data in and out of the control port on the MC falling edge. MS is the

active-low mode control enable, used to enable the internal mode register access. If data from the device is not

required, the MISO pin can be assigned to GPIO1 by register control.

9.5.1.3.1 Register Read and Write Operation

All read and write operations for the serial control port use 16-bit data words. Figure 47 shows the control data

word format. The most significant bit is the read and write (R/W) bit. For write operations, the bit must be set to 0.

For read operations, the bit must be set to 1. There are seven bits, labeled IDX[6:0], that hold the register index

(or address) for the read and write operations. The least significant eight bits, D[7:0], contain the data to be

written to, or the data that was read from, the register specified by IDX[6:0].

Figure 48 and Figure 49 show the functional timing diagram for writing or reading through the serial control port.

MS should be held at logic 1 state until a register needs to be written or read. To start the register write or read

cycle, MS should be set to logic 0. Sixteen clocks are then provided on MC, corresponding to the 16 bits of the

control data word on MOSI and readback data on MISO. After the eighth clock cycle has completed, the data

from the indexed-mode control register appears on MISO during the read operation. After the sixteenth clock

cycle has completed, the data is latched into the indexed-mode control register during the write operation. To

write or read subsequent data, MS should be set to logic 1 once.

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MSB

LSB

IDX6 IDX5 IDX4 IDX3 IDX2 IDX1 IDX0 R/W

D7

D6

D5

D4

D3

D2

D1

D0

Register Index (or Address)

Register Data

NOTE: B8 is used for selection of write or read. Setting = 0 indicates a write, while = 1 indicates a read. Bits 15–9 are used

for register address. Bits 7–0 are used for register data.

Figure 47. Control Data Word Format for MDI

MS

MC

A6 A5 A4 A3 A2 A1 A0

W

D7 D6 D5 D4 D3 D2 D1 D0

MOSI

MISO

HI-z

Figure 48. Serial Control Format for Write

MS

MC

A6 A5 A4 A3 A2 A1 A0

R

D7 D6 D5 D4 D3 D2 D1 D0

MOSI

MISO

HI-z

Figure 49. Serial Control Format for Read

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9.5.1.4 I²C Interface

The PCM186x software-controlled devices support the I²C serial bus and the data transmission protocol for

standard and fast mode as a slave device. This protocol is explained in I²C specification 2.0.

The I²C control port is available even in the absence of any other clocks in the system.

In I²C mode, the control pins are changed as shown in Table 22.

Table 22. I²C Pins and Functions

PIN NAME

SDA

PIN NUMBER

PROPERTY

Input / Output

Input

DESCRIPTION

I²C data

I²C clock

I²C address 1

23

24

25

SCL

AD

Input

9.5.1.4.1 Slave Address

The PCM186x software-controlled devices have a 7-bit slave address, as shown in Table 23. The first six bits

(MSBs) of the slave address are factory preset to 1001 01. The next bit of the address byte is the device select

bit, which can be user-defined by the AD pin. A maximum of two PCM186x devices can be connected on the

same bus at one time. Each device responds when receiving the respective slave address.

Table 23. I²C Slave Address

MSB

1

LSB

R/W

0

1

0

1

AD

9.5.1.4.2 Packet Protocol

A master device must control packet protocol, which consists of start condition, slave address, read/write bit,

data if write or acknowledge if read, and stop condition. The PCM186x software-controlled devices support only

slave receivers and slave transmitters. Figure 50 shows the basic I²C framework.

SDA

SCL

1–7

8

9

1–8

9

1–8

9

Sp

St

Slave address R/W

ACK

DATA

ACK

DATA

ACK

R/W: Readoperation if 1;otherwise,write operation

ACK: Acknowledgement of a byte if 0

DATA: 8 bits (byte)

Start

Stop

condition

write operation

Transmitter

Data Type

M

S

M

S

M

S

M

------------

St

slave

address

R/W

ACK

DATA

ACK

DATA

ACK

Sp

read operation

Transmitter

Data Type

M

S

M

S

M

S

M

St

slave

R/W

ACK

DATA

ACK

DATA

ACK

Sp

address

M: Master Device MMM S: Slave Device

St: Start Condition MMM Sp: Stop Conditiion

Figure 50. Basic I²C Framework

9.5.2 Current Status Registers

Page.0, registers 0x72 through 0x75 and 0x78 can be used to read the device status at any time. Sample rate,

power rail status, clock error, and clock ratios can all be read from these registers.

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9.5.3 Real World Software Configuration using Energysense and Controlsense

To gain the benefit of many of the PCM186x features, use a microcontroller to monitor and control the device.

There are two main modes withing the device, Active and Sleep. Using a microcontroller to process the interrupts

for both energysense and controlsense allows the system to intelligently wake and sleep as well as update

system controls. Figure 51 and Figure 52 show flow diagrams for both active and sleep modes, respectively.

Extended I²C register settings are shown in Bold Text.

9.5.3.1 Active Mode Flow Diagram

PowerUp

Basic Device

Configuration

Stable System

Running in Active Mode

Manually (0x0A)

cycle for secondary

No Interrupt

ADC source

(control pot)

Interrupt!

INT_STAT

Energysense Signal Loss

ControlSense

(0x61)

Move to Sleep or wait

Sleep

Ignore and Wait Longer

for another length of

time?

Update System

Refresh Pot Value

Reset Ref Level

Clear E-Sense

Interrupt

Move to Sleep Mode

(0x70)

Figure 51. Active Mode Flow Chart

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9.5.3.2 Basic Device Configuration

The device by default starts in slave mode at 48 kHz (per the EVM)

Set global loss level to be –50 dB using the DSP coefficient method.

Set 4R as controlsense input (for example, a control voltage for volume control) using SIGDET_CH_MODE

(0x30)

Configure active mode secondary to be channel 4R using SEC_ADC_INPUT_SEL (0x0A)

Set Read Data without latch in register AUXADC_DATA_CTRL (0x58)

Set interrupts (energysense and controlsense) using INT_EN (0x60)

Set interrupt pulse for 3 mS (makes it easier to see it visually using INT_PLS (0x62)

9.5.3.3 Clear Energysense Interrupt

Disable the energysense interrupt in INT_STAT register (0x61)

Remove the interrupt source by changing the loss detect threshold to 110 dB (ADC noise level) using the DSP

coefficient method.

Write 0xFF to the SIGDET_STAT (0x32) register.

Write 0x00 to the SIGDET_STAT (0x32) register.

Change the loss detect threshold back to –50 dB using the DSP coefficient method.

Re-enable the energysense interrupt in INT_STAT register (0x61)

9.5.3.4 Update System Settings

Read interrupt status INT_STAT register(0x61)

Clear interrupt enable INT_EN (0x60)

Check which input caused the interrupt; in this case, looking for (4R) SIGDET_STAT (0x32)

Read new 4R data (for example, SIGDET_DC_LEVEL_CH4_R 0x57).

Host would normally process as needed. (foe example, change volume in the amplifier)

Set SIGDET_DC_REF_CH4_R (0x55) to be the new value.

Now that interrupt source is removed, we can clear the SIGDET_STAT register (0x32)

Write 0xFF to SIGDET_STAT register (0x32).

Write 0x00 to SIGDET_STAT register (0x32).

Re-enable control Sense Interrupt in INT_EN (0x60)

9.5.3.5 Sleep Mode Flow Diagram

The sleep mode flow chart is shown in Figure 52.

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Sleep Mode Start

No Interrupt

Interrupt!

INT_STAT

(0x61)

Energysense

Audio Detect

ControlSense

Update System

Disable Interrupt

(0x60)

Disable Interrupt

Refresh Pot Value

Update System

Read SIGDET_STAT

(0x32)

Reset Ref Level

Re-enable Interrupt

Change Primary

Audio Inputs?

WAKE?

(0x70)

WAKE (0x70)

No

Yes

Figure 52. Sleep Mode Flow Chart

9.5.3.6 Update Controlsense values in Sleep Mode

9.5.3.6.1 Update System Settings

In sleep mode, any channels set as controlsense inputs are scanned through automatically. The read and writes

to SIGDET_DC_REF_CHx_x and SIGDET_DC_LEVEL_CHx_x should be selected based on whichever input

caused the interrupt.

Read interrupt status INT_STAT register(0x61)

Clear controlsense interrupt enable INT_EN (0x60)

Check which input caused the interrupt SIGDET_STAT (0x32)

Read new data (for example, SIGDET_DC_LEVEL_CHx_x).

Host would normally process as needed (for example, change volume in the amplifier)

Set SIGDET_DC_REF_CHx_x to be the new value.

Now that interrupt source is removed, we can clear the SIGDET_STAT register (0x32) --

Write 0xFF to SIGDET_STAT register (0x32).

Write 0x00 to SIGDET_STAT register (0x32).

Re-enable controlsense interrupt in INT_EN (0x60)

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9.5.4 Programming and Register Reference

9.5.4.1 Coefficient Data Formats

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All mixer gain coefficients are 24-bit coefficients using a 4.20 number format. Numbers formatted as 4.20

numbers have 4 bits to the left of the binary point and 20 bits to the right of the binary point.

The most significant bit of the 4.20 number format is the sine bit. It is used, as part of a two's complement

number to invert the phase of that mixer input.

See SLAC663 for a calculator to convert from dB to the hexadecimal coefficient required.

9.5.5 Programming DSP Coefficients on Software-Controlled Devices

The two fixed function DSPs on chip can have coefficients for filters and mixers programmed to them. This is

done indirectly using specific registers on page 1. The devices integrate a memory arbiter that copies the

coefficient from the I²C or SPI register space to the appropriate DSP memory address, when the DSP has

completed its instructions for that sample. The refresh mechanism for the memory arbiter to update the I²C or

SPI register space requires two dummy I²C writes to move from the DSP internal memory, through the arbiter

and onwards to be visible in the I²C or SPI register space. See Figure 53

Refresh Status

Clocked by I²C Write

I2C and SPI

Register Space

Memory Arbiter

DSP Internal Memory

Figure 53. Register to DSP Memory Structure

Each 24-bit coefficient can be written once every audio sample. This allows a single sample update of a mixer

coefficient, however, biquad coefficients will require multiple audio samples for all of the coefficients to be written.

Under such conditions, the device should be muted until all coefficients are written. Otherwise, the biquad could

become unstable.

In addition, DSP Internal memory can only be written to when the DSP is provided a clock from either the PLL or

an external master clock source. Requesting a WREQ = 1 Register 0x01 of page 0x01 will have no effect, if the

DSP is not currently running. This is of relevance if the system is running as a clock slave, and the clocks stop.

For example, to write to these registers, change the energysense resume threshold value to –30 dB (0x040C37)

1. Write 0x00 0x01 ; # change to register bank 1

2. Write 0x00 0x01 ; # two dummy writes to update the status of the write busy bit

3. Write 0x00 0x01 ; # ^^^^

4. Read Register 0x01 # if value is 0x00 then continue (check if system is still writing/reading). Otherwise, do

another dummy write and check again.

5. Write 0x02 0x2D ; # write the memory address of resume threshold

6. Write 0x04 0x04 ; # bit[23:15]

7. Write 0x05 0x0C ; # bit[15:8]

8. Write 0x06 0x37 ; # bit[7:0]

9. Write 0x01 0x01 ; # execute write operation

See SLAC663 for more details.

The internal DSP coefficient memory space is mapped as shown in Table 24.

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Table 24. Virtual 24-Bit DSP Coefficient Registers

NAME

COEFFICIENT

MIX1_CH1L

MIX1_CH1R

MIX1_CH2L

MIX1_CH2R

MIX1_I2SL

MIX1_I2SR

MIX2_CH1L

MIX2_CH1R

MIX2_CH2L

MIX2_CH2R

MIX2_I2SL

MIX2_I2SR

MIX3_CH1L

MIX3_CH1R

MIX3_CH2L

MIX3_CH2R

MIX3_I2SL

MIX3_I2SR

MIX4_CH1L

MIX4_CH1R

MIX4_CH2L

MIX4_CH2R

MIX4_I2SL

MIX4_I2SR

LPF_B0

ADDRESS

0x00

0x01

0x02

0x03

0x04

0x05

0x06

0x07

0x08

0x09

0x0A

0x0B

0x0C

0x0D

0x0E

0x0F

0x10

0x11

0x12

0x13

0x14

0x15

0x16

0x17

0x20

0x21

0x22

0x23

0x24

0x25

0x26

0x27

0x28

0x29

0x2C

0x2D

DESCRIPTION

4.20 format

Mixer-1

Mixer-2

Mixer-3

Mixer-4

4.20 format

1.23 format

Secondary ADC LPF and HPF

Coefficients

LPF_B1

LPF_B2

LPF_A1

LPF_A2

HPF_B0

HPF_B1

HPF_B2

HPF_A1

HPF_A2

Energysense

Loss_threshold

Resume_threshold

1.23 format

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10 Application and Implementation

NOTE

Information in the following applications sections is not part of the TI component

specification, and TI does not warrant its accuracy or completeness. TI’s customers are

responsible for determining suitability of components for their purposes. Customers should

validate and test their design implementation to confirm system functionality.

The PCM186x family is extremely flexible, and this flexibility gives rise to a number of design questions that

define the design requirements for a given application.

10.1 Application Information

In this section, the design choices are described, followed by a typical system implementation. The simplified

application diagrams shown in 图 64 and 图 66 illustrate a typical system that would require the following

architecture decisions to be made:

•

Device Control Method

–

Hardware Control (PCM1860, PCM1861)

Software Control (PCM1862, PCM1863, PCM1864 and PCM1865)

–

SPI

I²C

•

Power-Supply Options

–

Single supply

Separate analog and digital supplies

Separate IO supply

•

Master Clock Source

–

External CMOS-level clock

External crystal with integrated oscillator

Analog Input Configuration

–

Single-ended

Differential

An example application diagram is shown in 图 54.

IN

MIC

DOUT

BCK

DOUT

TMS320C5535

PCM5121

TPA3116

PCM186x

LRCK

SW mix

IN

LINE

BCK

PCM5100

LRCK

图 54. Example Application Diagram

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Application Information (接下页)

10.1.1 Device Control Method

10.1.1.1 Hardware Control

The PCM1860 and PCM1861 are controlled with pullup or pulldown voltages on pins MD0 through MD6. The INT

pin is ideally designed to be used with a microcontroller that can treat the pin as both an input (when used as an

interrupt) and as an output to pull the pin high, and force power down. See the Pin Configuration and Functions

for the PCM1860 and PCM1861 for specific configuration details. The hardware control interface is shown in 图

55.

MD0 26

Sample Rate and

Master/Slave Selection

MD1 25

Digital Audio Format Selection

Filter Mode Selection

MD4 24

MD3I 23

MD2 22

MD5 21

MD6 20

INT 19

Interrupt and Gain Selection

Interrupt

图 55. PCM1860 and PCM1861 Hardware Control Interface

10.1.1.2 Software Control

10.1.1.2.1 SPI Control

SPI control is selected by the MD0 pin; in this case, MDO connects to 3.3 V, so that the device acts as an SPI

slave. The SPI control interface is shown in 图 56.

MD0 26

MS 25

3.3 V SPI Select

MC 24

SPI

MOSI 23

MISO 22

GPIO1/INTA/DMIN 21

GPIO2/INTB/DMCLK 20

GPIO3/INTC 19

Interrupt / GPIO

图 56. SPI Control Interface Including Interrupt Signals

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Application Information (接下页)

10.1.1.2.2 I²C Control

I²C control is selected by the MD0 pin; in this example, MDO is pulled down to ground, so that the device acts as

an I²C slave. One address line is supported to select between two devices on the same bus. The I²C control

interface is shown in 图 57.

I²C Select

MD0 26

GND

I²C Address Select

AD 25

SCL 24

I²C Bus

SDA 23

GPIO1/INTA/DMIN 21

GPIO2/INTB/DMCLK 20

GPIO3/INTC 19

Interrupt / GPIO

图 57. I²C Control Interface Including Interrupt Signals

10.1.2 Power-Supply Options

10.1.2.1 3.3-V AVDD, DVDD, and IOVDD

The 3.3-V AVDD, DVDD, and IOVDD Example is the most typical power-supply configuration. The 3.3-V single

supply is shown in 图 58.

8

AVDD

13 DVDD

14 IOVDD

11 LDO

10 …F

2.2 …F

GND

6

VREF

12 DGND

AGND

7

GND

图 58. Single 3.3-V Supply

10.1.2.2 3.3-V AVDD, DVDD, and 1.8-V IOVDD

For details regarding lower-power applications, see 3.3-V AVDD, DVDD With 1.8-V IOVDD Example for Lower-

Power Applications for lower-power applications.

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Application Information (接下页)

10.1.3 Master Clock Source

The PCM186x family offers three different clock sources. For the highest performance, run the ADC in master

mode from a stable, well-known SCK source, such as a CMOS SCK, or a external crystal (XTAL). The PCM186x

is easy to hook up to a crystal, simply connect to XI and XO, and add capacitors to ground, as suggested in the

XTAL manufacturer's data sheet (typically 15 pF).

External CMOS clock sources can be brought directly into the SCKI pin (for 3.3-V sources) or into the XI pin (1.8

V sources).

The PLL must be enabled if the clock source is unrelated to the audio rate. For instance, a 12-MHz USB crystal

requires custom PLL settings to generate the 48-kHz rate clocks and the 44.1-kHz rate clocks required by many

audio systems. An example with a 12-MHz clock is shown in Software-Controlled Devices Manual PLL

Calculation.

For timing limits on XTAL and SCKI, see the Specifications section.

10.1.4 Dual PCM186x TDM Functionality

Two PCM186x software-controlled devices can be used together to create an 8-channel (or higher) channel

count system using a TDM. In 图 59, Device A is used as the TDM clock master, and Device B is configured to

be a TDM slave and transmit on channels 5, 6, 7, and 8 of the TDM stream. The key difference is that Device A

most likely has a crystal, or an SCKI source, and is configured to be the TDM master, whereas Device B does

not require an XTAL or SCKI source because Device B uses the internal PLL to generate the required system

clocks. Another two channels can be added to the stream from a stereo device; however, I²C address

management is required because the PCM186x software-controlled devices can only have one of two I²C

addresses.

CH1, CH2, CH3, CH4

CH5, CH6, CH7, CH8

DATA

LRCK

BCK

DSP Processor

PCM186x #1

PCM186x #2

(TDM Master)

(TDM Slave)

SDA

SCL

图 59. TDM With Two PCM186x

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Application Information (接下页)

10.1.5 Analog Input Configuration

10.1.5.1 Analog Front-End Circuit For Single-Ended, Line-In Applications

Most systems can simply use an input filter similar to the one shown in 图 60. However, for systems with

significant out-of-band noise, a simple filter such as that shown in 图 61 can be used for pre-ADC, antialiasing

filtering. The recommended resistor value for the antialiasing filter is 100 Ω. Place film-type capacitors of 0.01 µF

as close as possible to the VINLx and VINRx pins, and terminate to GND as close as possible to the AGND pin

in order to maximize the dynamic performance of the ADC.

Adding this filter resistor also adds some input current limiting into the device, if the ESD diodes begin to clamp

the signal when the maximum input voltage is exceeded. Keep the current through the input ESD diodes as low

as possible, with ~5 mA treated as a absolute maximum. Any higher and the ESD diodes may fail because of the

thermal constraints.

10 µF

100 ꢀ

Single-Ended

Audio Source

Single-Ended

Audio Source

VINxx

0.01 µF

PCM186x

图 60. Analog Input Circuit for Single-Ended Input

图 61. Analog Input Circuit With Additional Anti

Aliasing Filter for Single-Ended Applications

Applications

10.1.5.2 Analog Front-End Circuit for Differential, Line-In Applications

As in single-ended applications, most systems can simply use an input filter similar to 图 62. However, for

systems with significant out-of-band noise, a simple filter such as that shown in 图 63 can be used for pre-ADC,

antialiasing filtering. The recommended resistor value for the antialiasing filter is 47 Ω. Place film-type capacitors

of 0.01 µF as close as possible to the VINLx and VINRx pins, and terminate to GND as close as possible to the

AGND pin in order to maximize the dynamic performance of ADC. To maintain common-mode rejection, match

the series resistors as closely as possible.

10 µF

47 ꢀ

Differential +

Audio Source

Differential +

Audio Source

VINxP

VINxM

VINxP

VINxM

0.01 µF

Differential -

Audio Source

Differential -

Audio Source

10 µF

PCM186x

10 µF

47 ꢀ

PCM186x

图 62. Analog Input Circuit for Differential Input

图 63. Differential Input Circuit With Additional

Applications

AntiAliasing Filter

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10.2 Typical Applications

10.2.1 Stereo Recording Application for PCM186x Hardware-Controlled Devices in Master Mode

3.3 V

1

2

3

4

VINL2/VIN1M

VINR2/VIN2M

VINL1/VIN1P

VINR1/VIN2P

Mic Bias

5

Stereo

Pair 2

0.1 …F

10 …F 0.1 …F

10 …F

2.2 kꢀ

IOVDD 14

DVDD 13

10 …F

Right Mic

Left Mic

Stereo

Pair 1

AVDD

8

30 VINR3/VIN3P

29 VINL3/VIN4P

28 VINR4/VIN3M

27 VINL4/VIN4M

MD0 26

MD1 25

MD3 23

MD4 22

MD2 24

MD5 21

MD6 20

INT 19

Stereo

Pair 3

Sample Rate or Master/Slave

Selection

Filter Mode Selection

Stereo

Pair 4

Digital Audio Format Selection

15 pF

9 XO

10 XI

Input and Gain Selection

15 pF

11 LDO

2.2 …F

6

7

VREF

AGND

DOUT 18

BCK 17

LRCK 16

System

Processor

12 DGND

15 SCKI

PCM1860

PCM1861

NOTE: Pins not shown in specific order.

图 64. Stereo Recording Application for PCM186x Hardware-Controlled Devices in Master Mode

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Typical Applications (接下页)

10.2.1.1 Design Requirements

•

Device control method: Hardware control by digital GPIO pins of a microcontroller

XTAL used for master mode

Single-ended analog inputs

10.2.1.2 Detailed Design Procedure

•

Device control method: Hardware control by digital GPIO pins of a microcontroller

Select XTAL capacitors by reading the XTAL data sheet

Single-ended analog inputs

–

MD2, MD5, MD6 configuration (see the Pin Configuration and Functions for the PCM1860 and PCM1861)

•

Audio slave mode

–

MD0, MD1 grounded (see 图 64, and the Pin Configuration and Functions for the PCM1860 and

PCM1861)

•

The power rails in this application allow the usage of X7R Ceramic capacitors. A maximum voltage rating of

6.3 V should be enough for the power supply capacitors.

Configure the microcontroller INT pin to be an input for interrupts, or change the function to output to pull high

to power down the PCM1860 and PCM1861.

10.2.1.3 Application Curves

0

œ20

œ40

œ60

œ80

œ100

œ120

œ140

œ160

20

200

2000

Frequency (Hz)

20000

C013

图 65. Frequency Response with –1-dB Input at 1 kHz

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Typical Applications (接下页)

10.2.2 Stereo Recording Application for PCM186x Software-Controlled Devices in Slave PLL Mode with

1.8-V IOVDD

1.8 V

3.3 V

0.1 …F

10 …F

0.1 …F

10 …F

1

2

3

4

VINL2/VIN1M

VINR2/VIN2M

VINL1/VIN1P

VINR1/VIN2P

Mic Bias

5

Stereo

Pair 2

2.2 kꢀ

IOVDD 14

DVDD 13

10 …F

3.3 V

Right MIC

Left MIC

Stereo

Pair 1

AVDD

8

0.1 …F

10 …F

30 VINR3/VIN3P

29 VINL3/VIN4P

28 VINR4/VIN3M

27 VINL4/VIN4M

MD0 26

MS/AD 25

Stereo

Pair 3

I²C Address Select

I²C Bus

MC/SCL 24

Stereo

Pair 4

MOSI/SDA 23

9

XO

MISO/GPIO0/DMIN2 22

GPIO1/INTA/DMIN 21

GPIO1/INTB/DMCLK 20

GPIO3/INTC 19

DOUT 18

1.8 V

10 XI

Interrupt or GPIO

11 LDO

2.2 …F

6

7

VREF

AGND

2.2 …F

PCM1862

System

Processor

12 DGND

15 SCKI

BCK 17

PCM1863

PCM1864

PCM1865

LRCK 16

NOTE: Pins not shown in specific order.

图 66. Stereo Recording Application for PCM186x Software-Controlled Devices in Slave PLL Mode with

1.8-V IOVDD

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Typical Applications (接下页)

10.2.2.1 Design Requirements

•

Device control method: Software control by I²C

Clock slave to a 1.8-V device that only supplies BCK and LRCK (such as a Bluetooth module)

Single-ended analog inputs

10.2.2.2 Detailed Design Procedure

•

Device control method: Configure for I²C by pulling MD0 to GND, and setting I²C address by setting the AD

pin high or low

•

Make sure that BCK is configured in clock master device to be 64 × f_Sfor automatic PLL setting to function.

Single-ended analog inputs

–

MD2, MD5, MD6 configuration; see

•

Audio slave mode

–

Configure appropriate clock registers

Page 0, 0x20 - Set MST_MODE = 1 (I²S slave)

The power rails in this application allow the usage of X7R ceramic capacitors. A maximum voltage rating of

6.3 V should be enough for the power-supply capacitors.

10.2.2.3 Application Curves

0

œ20

œ40

œ60

œ80

œ100

œ120

œ140

œ160

20

200

2000

Frequency (Hz)

20000

C013

图 67. Frequency Response With –60-dB Input at 1 kHz

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11 Power Supply Recommendations

11.1 Power-Supply Distribution and Requirements

The PCM186x powers the device using the pins shown in 图 68.

AVDD

(3.3 V)

DVDD

(3.3 V)

IOVDD

(1.8 V or 3.3 V)

LDO

(1.8 V)

Primary

ADCs

Digital Core

(DSP, Logic)

PLL

Digital IO

Analog Circuits

Secondary

ADC

Oscillator

Digital Circuits

Power Circuits

Clock Halt

Detect

PGAs

1.8V LDO

Reference

Mic Bias

PCM186x

图 68. PCM186x Power Distribution Tree

The PCM186x uses a combination of 3.3-V functional blocks and 1.8-V functional blocks to achieve high analog

performance, combined with high levels of digital integration. As such, the device has three internal power rails.

AVDD provides the analog circuits with a clean 3.3-V rail. DVDD is used for 3.3-V digital clock circuits.

Externally, AVDD and DVDD can be connected together without significant impact to performance. The final rail,

IOVDD, is used for driving the input/output digital circuitry.

The PCM186x integrates an on-chip LDO to convert an external 3.3 V to the 1.8 V required by the digital core.

The LDO input is derived from IOVDD. Power-supply pin descriptions are listed in 表 25.

表 25. Power-Supply Pin Descriptions

NAME

AVDD

DVDD

IOVDD

DESCRIPTION

Analog voltage supply (3.3 V) that powers the ADC, PGA, reference, and secondary ADC.

Digital voltage supply (3.3 V) that is used for the PLL and the oscillator circuit.

Input/output pin voltage. Also used as a source for the internal LDO for the digital circuit.

Output from the on-chip LDO that is used with a 0.1-µF decoupling capacitor. Can be driven (used as power input)

with a 1.8-V supply to bypass the on-chip LDO for lower power consumption.

LDO

AGND

DGND

Analog ground

Digital ground

11.2 1.8-V Support

All PCM186x devices can support external devices with a 1.8 V I/O. This operating mode is configured by driving

IOVDD and LDO with 1.8 V.

11.3 Brownout Conditions

The PCM186x devices do not have a brownout detector, or a reset pin to hold while the system is powering up.

Make sure that the system design meets minimum AVDD, DVDD and IOVDD requirements.

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11.4 Power-Up Sequence

The power-up sequence consists of the following steps:

1. Power-on reset

1. Power up AVDD, DVDD and IOVDD

2. Check if LDO is being driven with an external 1.8 V, or is an output. Enable LDO if required.

3. Release digital reset

2. Wait until analog voltage reference is stable

3. Configure clock (PLL requires < 250 µs)

4. Fade-in audio ADC content

11.5 Lowest Power-Down Modes

To achieve the lowest levels of power down and sleep current, the following recommended write sequences are

suggested on PCM186x software-controlled devices:

11.5.1 Lowest Power In Standby Mode (AVDD = DVDD = IOVDD = 3.3 V)

Consumption as low as 0.59 mW

0x00=0x00 //select page0

0x70=0x14 //power down reference

0x00=0x03 //select page3

0x12=0x41 //disable OSC

0x00=0x00 //select page0

11.5.2 Lowest Power in Sleep or Energysense Mode (AVDD = DVDD = IOVDD = 3.3 V)

Consumption as low as 14 mW

Clocks must be running during this process

0x00=0x00 //select page0

0x70=0x72 //enter in sleep mode

0x00=0xfd //select page253

0x14=0x10 //change global bias current

0x00=0x00 //select page0

Now stop the clocks

11.5.3 Lower Power in Sleep or Energysense Mode (AVDD = DVDD 3.3 V and IOVDD = 1.8 V)

Consumption as low as 11.15 mW

Clocks must be running during this process

0x00=0x00 //select page0

0x70=0x72 //enter in sleep mode

0x00=0xfd //select page253

0x14=0x10 //change global bias current

0x00=0x00 //select page0

stop the clocks (note: make sure the clock IO is 1.8 V)

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11.6 Power-On Reset Sequencing Timing Diagram

LDO Out

1.8V

1.5V

0V

LDO_GOOD

DVDD & AVDD

GOOD

OSC Clock

Counts 16 clocks

OSC GOOD

Digital Reset

Wait

REF

PLL and

Clock Divider

Config

Device

Config

Clock

Detection

Wait for the PLL

lock

stable

REF Fast Boot

2ms

PLL Lock Flag

Digital Module Clocks

DOUT

Fade-IN

图 69. Power-On Reset Timing Diagram

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11.7 Power Connection Examples

11.7.1 3.3-V AVDD, DVDD, and IOVDD Example

This example shows the most typical usage. One single supply, shared between all three supply voltage inputs.

Rail-connected decoupling capacitors are not shown. 图 70 shows 3.3-V supply for all supplies. 图 71 shows

separate 3.3 V for AVDD and DVDD.

注

There is no disadvantage in separating the AVDD and DVDD, as the device waits until

both are present before powering up.

AVDD

DVDD

IOVDD

LDO

3.3 V

PCM186x

1.8-V

Output

图 70. 3.3 V for All Supplies

AVDD

DVDD

IOVDD

LDO

3.3 V_A

3.3 V_D

PCM186x

1.8-V

Output

图 71. Separate 3.3 V for AVDD and DVDD

11.7.2 3.3-V AVDD, DVDD With 1.8-V IOVDD Example for Lower-Power Applications

The PCM186x also supports interfacing to lower power 1.8-V processors, as shown in 图 72. In the presence of

an external 1.8 V connected to LDO, the internal LDO that takes DVDD (3.3 V) and converts it to the 1.8-V core

voltage is bypassed. Under such conditions, IOVDD will then be used as the 1.8-V source for the digital core of

the device. In such systems, it is still important to have 3.3 V for DVDD, as specific sections of the digital core in

the device run from 3.3 V.

AVDD

DVDD

IOVDD

LDO

3.3 V

PCM186x

1.8-V

External

图 72. 1.8-V IOVDD With 3.3 V for AVDD and DVDD

82

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11.8 Fade In

This sequence is the final stage of the power up and is illustrated in 图 73. After the PLL has locked, the ADC

starts running, and the data follows the fade-in sequence according to the following steps:

1. Detect a zero crossing audio input.

2. Increment the volume towards 0 dB with S-shaped volume.

3. Repeat from step 1 until the result is 0 dB. The number of steps from mute to 0 dB is 48 steps.

4. If zero crossing does not occur for 8192 sample times (= time out), change the volume-per-sample time.

0 dB (Unmute)

Mute Event

Time

48 Steps / Zero Crossing

or

48 Steps / f_S

图 73. S-Curve Fade-In Behavior

83

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12 Layout

12.1 Layout Guidelines

Employ best design practices when laying out a printed circuit board (PCB) for both analog and digital

components. The PCM186x audio ADC is a relatively simple device to lay out, even on a two-layer PCB. The

following basic recommendations for layout of the PCM186x help achieve the best possible performance of the

device.

•

Separate analog and digital sections where layout permits. Route analog lines away from digital lines. This

routing technique prevents digital noise from coupling back into analog signals.

The bottom copper plane can be a shared ground, whereas a ground plane can be used on the top layer as

well. Separated planes for analog and digital grounds are not required to achieve data sheet performance.

Place decoupling capacitors as close as possible to the supply pins, and in the same layer of the device, to

yield the best results. Do not place vias between decoupling capacitors and the device.

Place ground planes between the input traces to achieve the lowest crosstalk performance.

The EVM user’s guide shows the schematics, a bill of material, and a more detailed PCB layout.

12.1.1 Grounding and System Partitioning

Use the same plane for analog and digital grounds to avoid any potential voltage difference between these

grounds. On the PCM186x EVM, maximum SNR performance is achieved by using a single ground plane, and

making sure that the return currents for digital signals are not near the AGND pin or the input signals.

As shown in 图 74, the pin layout of the PCM186x is partitioned into two sections: analog and digital. No digital

return currents (for example, clocks) are generated in the analog circuitry, as long as the system is partitioned in

such a way that digital signals are routed away from the analog sections.

1

30

29

28

27

26

25

24

23

22

21

20

19

18

17

16

2

Analog

Section

3

4

5

6

7

8

9

10

11

12

13

14

15

Digital

Section

图 74. Single Ground With Analog Pins Partitioned to the Top and Digital Pins at the Bottom

84

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12.2 Layout Example

图 75. Layout Example

13 Register Maps

13.1 Register Map Description

The register map is the primary way to configure the PCM186x software-controlled devices. The register map is

separated into four pages: 0,1,3, and 253. Page 0 handles all of the device configuration. Page 1 is used to

indirectly program coefficients into the two fixed function DSPs on the PCM186x. Page 3 and page 253 contain

additional registers for lower-power use. All undocumented registers are considered reserved; do not write to

undocumented registers.

Change pages by writing to register 0x00 with the required page.

Reset registers by writing 0xFE to register 0x00.

85

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13.3 Page 0 Registers

13.3.1 Page 0: Register 1 (address = 0x01) [reset = 0x00]

Figure 76. Page 0: Register 1

7

6

5

4

3

2

1

0

PGA_VAL_CH1_L

R/W-0000 0000b

Table 27. Page 0: Register 1 Field Descriptions

Bit

Field

PGA_VAL_CH1_L

Type

Reset

Description

7-0

R/W

0000 0000b PGA Value Channel 1 Left

Global channel gain for ADC1L. (analog + digital). Analog gain

only, if manual gain mapping is enabled. (0x19)

Specify two's complement value with 7.1 format.

1110 1000: –12.0 dB (Min)

…

1111 1110: –1.0 dB

1111 1111: 0.5 dB

0000 0000: 0.0 dB (default)

0000 0001: 0.5 dB

…

0000 0010: 1.0 dB

…

0001 1000: 12.0 dB

…

0010 1000: 20.0 dB

…

0100 0000: 32.0 dB

…

0101 0000: 40.0 dB (Max)

13.3.2 Page 0: Register 2 (address = 0x02) [reset = 0x00]

Figure 77. Page 0: Register 2

7

6

5

4

3

2

1

0

PGA_VAL_CH1_R

R/W-0000 0000b

Table 28. Page 0: Register 2 Field Descriptions

Bit

Field

PGA_VAL_CH1_R

Type

Reset

Description

7-0

R/W

0000 0000b PGA Value Channel 1 Right

Programmable gain value, channel 1 right (see Page 0, 0x01

for complete description)

13.3.3 Page 0: Register 3 (address = 0x03) [reset = 0x00]

Figure 78. Page 0: Register 3

7

6

5

4

3

2

1

0

PGA_VAL_CH2_L

R/W-0000 0000b

Table 29. Page 0: Register 3 Field Descriptions

Bit

Field

PGA_VAL_CH2_L

Type

Reset

Description

7-0

R/W

0000 0000b PGA Value Channel 2 Left

Programmable gain value, channel 2 left (see Page 0, 0x01 for

complete description)

89

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13.3.4 Page 0: Register 4 (address = 0x04) [reset = 0x00]

Figure 79. Page 0: Register 4

7

6

5

4

3

2

1

0

PGA_VAL_CH2_R

R/W-0000 0000b

Table 30. Page 0: Register 4 Field Descriptions

Bit

Field

PGA_VAL_CH2_R

Type

Reset

Description

7-0

R/W

0000 0000b PGA Value Channel 2 Right

Programmable gain value, channel 2 right (see Page 0, 0x01

for complete description)

13.3.5 Page 0: Register 5 (address = 0x05) [reset = 0x86]

Figure 80. Page 0: Register 5

7

6

5

4

3

2

1

0

DPGA_CLIP_E

N

AGC_EN

SMOOTH

R/W-1b

LINK

MAX_ATT

R/W-00b

START_ATT

R/W-11b

R/W-0b

Table 31. Page 0: Register 5 Field Descriptions

Bit

Field

Type

Reset

Description

7

SMOOTH

R/W

1b

PGA Control

Enable PGA smooth change

0: Immediate change

1: Smooth change (default)

6

5

LINK

R/W

0b

Link PGA Control

0: Independent control (default)

1: Ch1[R] / Ch2[L] / Ch2[R] follow Ch1[L] PGA value.

DPGA_CLIP_EN

MAX_ATT

0b

Enable Clipping Detection After Digital PGA

0: Disable (default)

1: Enable

4-3

00b

Attenuation Limit of the Automatic Clipping Suppression

00: –3 dB (default)

01: –4 dB

10: –5 dB

11: –6 dB

2-1

START_ATT

AGC_EN

R/W

11b

0b

Start Automatic Clipping Suppression After Clipping is

Detected CLIP_NUM Times

00: 80

01: 40

10: 20

11: 10 (default)

0

Enable Automatic Clipping Suppression

0: Disable (default)

1: Enable

90

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13.3.6 Page 0: Register 6 (address = 0x06) [reset = 0x41]

Figure 81. Page 0: Register 6

7

6

5

4

3

2

1

0

POL

RSV

SEL_L

R/W-0b

R/W-1b

R/W-00 0001b

Table 32. Page 0: Register 6 Field Descriptions

Bit

Field

Type

Reset

Description

7

POL

R/W

0b

Change ADC1_INPUT_SEL_L Signal Polarity

0: Normal (default)

1: Inverted

6

RSV

R/W

1b

Reserved. Always write 1.

5-0

SEL_L

00 0001b

ADC 1 Input Channel Select (ADC1L)

00 0000: No select

00 0001: VINL1[SE] (default)

00 0010: VINL2[SE]

00 0011: VINL2[SE] + VINL1[SE]

00 0100: VINL3[SE]

00 0101: VINL3[SE] + VINL1[SE]

00 0110: VINL3[SE] + VINL2[SE]

00 0111: VINL3[SE] + VINL2[SE] + VINL1[SE]

00 1000: VINL4[SE]

00 1001: VINL4[SE] + VINL1[SE]

00 1010: VINL4[SE] + VINL2[SE]

00 1011: VINL4[SE] + VINL2[SE] + VINL1[SE]

00 1100: VINL4[SE] + VINL3[SE]

00 1101: VINL4[SE] + VINL3[SE] + VINL1[SE]

00 1110: VINL4[SE] + VINL3[SE] + VINL2[SE]

00 1111: VINL4[SE] + VINL3[SE] + VINL2[SE] + VINL1[SE]

01 0000: {VIN1P, VIN1M}[DIFF]

10 0000: {VIN4P, VIN4M}[DIFF]

11 0000: {VIN1P, VIN1M}[DIFF] + {VIN4P, VIN4M}[DIFF]

91

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13.3.7 Page 0: Register 7 (address = 0x07) [reset = 0x41]

Figure 82. Page 0: Register 7

7

6

5

4

3

2

1

0

POL

RSV

SEL_R

R/W-0b

R/W-1b

R/W-00 0001b

Table 33. Page 0: Register 7 Field Descriptions

Bit

Field

Type

Reset

Description

7

POL

R/W

0b

Change ADC1_INPUT_SEL_R Signal Polarity

0: Normal (default)

1: Inverted

6

RSV

R/W

1b

Reserved. Do not access.

5-0

SEL_R

00 0001b

ADC 1 Input Channel Select (ADC1R)

00 0000: No select

00 0001: VINR1[SE] (default)

00 0010: VINR2[SE]

00 0011: VINR2[SE] + VINR1[SE]

00 0100: VINR3[SE]

00 0101: VINR3[SE] + VINR1[SE]

00 0110: VINR3[SE] + VINR2[SE]

00 0111: VINR3[SE] + VINR2[SE] + VINR1[SE]

00 1000: VINR4[SE]

00 1001: VINR4[SE] + VINR1[SE]

00 1010: VINR4[SE] + VINR2[SE]

00 1011: VINR4[SE] + VINR2[SE] + VINR1[SE]

00 1100: VINR4[SE] + VINR3[SE]

00 1101: VINR4[SE] + VINR3[SE] + VINR1[SE]

00 1110: VINR4[SE] + VINR3[SE] + VINR2[SE]

00 1111: VINR4[SE] + VINR3[SE] + VINR2[SE] + VINR1[SE]

01 0000: {VIN2P, VIN2M}[DIFF]

10 0000: {VIN3P, VIN3M}[DIFF]

11 0000: {VIN2P, VIN2M}[DIFF] + {VIN3P, VIN3M}[DIFF]

92

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13.3.8 Page 0: Register 8 (address = 0x08) [reset = 0x42]

Figure 83. Page 0: Register 8

7

6

5

4

3

2

1

0

POL

RSV

SEL_L

R/W-0b

R/W-1b

R/W-00 0010b

Table 34. Page 0: Register 8 Field Descriptions

Bit

Field

Type

Reset

Description

7

POL

R/W

0b

Change ADC2_INPUT_SEL_L Signal Polarity

0: Normal (default)

1: Inverted

6

RSV

R/W

1b

Reserved. Do not access.

5-0

SEL_L

00 0010b

ADC 2 Input Channel Select (ADC2L)

00 0000: No select

00 0001: VINL1[SE] (default)

00 0010: VINL2[SE]

00 0011: VINL2[SE] + VINL1[SE]

00 0100: VINL3[SE]

00 0101: VINL3[SE] + VINL1[SE]

00 0110: VINL3[SE] + VINL2[SE]

00 0111: VINL3[SE] + VINL2[SE] + VINL1[SE]

00 1000: VINL4[SE]

00 1001: VINL4[SE] + VINL1[SE]

00 1010: VINL4[SE] + VINL2[SE]

00 1011: VINL4[SE] + VINL2[SE] + VINL1[SE]

00 1100: VINL4[SE] + VINL3[SE]

00 1101: VINL4[SE] + VINL3[SE] + VINL1[SE]

00 1110: VINL4[SE] + VINL3[SE] + VINL2[SE]

00 1111: VINL4[SE] + VINL3[SE] + VINL2[SE] + VINL1[SE]

01 0000: {VIN1P, VIN1M}[DIFF]

10 0000: {VIN4P, VIN4M}[DIFF]

11 0000: {VIN1P, VIN1M}[DIFF] + {VIN4P, VIN4M}[DIFF]

93

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13.3.9 Page 0: Register 9 (address = 0x09) [reset = 0x42]

Figure 84. Page 0: Register 9

7

6

5

4

3

2

1

0

POL

RSV

SEL_R

R/W-0b

R/W-1b

R/W-00 0010b

Table 35. Page 0: Register 9 Field Descriptions

Bit

Field

Type

Reset

Description

7

POL

R/W

0b

Change ADC2_INPUT_SEL_R Signal Polarity

0: Normal (default)

1: Inverted

6

RSV

R/W

1b

Reserved. Do not access.

5-0

SEL_R

00 0010b

ADC 2 Input Channel Select (ADC2R)

00 0000: No select

00 0001: VINR1[SE] (default)

00 0010: VINR2[SE]

00 0011: VINR2[SE] + VINR1[SE]

00 0100: VINR3[SE]

00 0101: VINR3[SE] + VINR1[SE]

00 0110: VINR3[SE] + VINR2[SE]

00 0111: VINR3[SE] + VINR2[SE] + VINR1[SE]

00 1000: VINR4[SE]

00 1001: VINR4[SE] + VINR1[SE]

00 1010: VINR4[SE] + VINR2[SE]

00 1011: VINR4[SE] + VINR2[SE] + VINR1[SE]

00 1100: VINR4[SE] + VINR3[SE]

00 1101: VINR4[SE] + VINR3[SE] + VINR1[SE]

00 1110: VINR4[SE] + VINR3[SE] + VINR2[SE]

00 1111: VINR4[SE] + VINR3[SE] + VINR2[SE] + VINR1[SE]

01 0000: {VIN2P, VIN2M}[DIFF]

10 0000: {VIN3P, VIN3M}[DIFF]

11 0000: {VIN2P, VIN2M}[DIFF] + {VIN3P, VIN3M}[DIFF]

94

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13.3.10 Page 0: Register 10 (address = 0x0A) [reset = 0x00]

Figure 85. Page 0: Register 10

7

6

5

4

3

2

1

0

RSV

SEL3

R/W-0000b

Table 36. Page 0: Register 10 Field Descriptions

Bit

7-4

3-0

Field

RSV

SEL

Type

R/W

Reset

0000b

Description

Reserved. Do not access.

Secondary ADC Input Channel

Do not select the same channel that is already in use by an

audio ADC

0: No Select (default)

1: ch1(L)

2: ch1(R)

3: ch2(L)

4: ch2(R)

5: ch3(L)

6: ch3(R)

7: ch4(L)

8: ch4(R)

13.3.11 Page 0: Register 11 (address = 0x0B) [reset = 0x44]

Figure 86. Page 0: Register 11

7

6

5

4

3

2

1

0

RX_WLEN

R/W-01b

RSV

TDM_LRCK_M

TX_WLEN

R/W-01b

FMT

ODE

R/W-0

R/W-0b

R/W-00b

Table 37. Page 0: Register 11 Field Descriptions

Bit

Field

Type

Reset

Description

7-6

RX_WLEN

R/W

01b

Receive PCM Word Length

00: 32-bit

01: 24-bit (default)

10: 20-bit

11: 16-bit

5

4

RSV

R/W

0b

Reserved. Do not access.

TDM_LRCK_MODE

LRCK Duty Cycle in TDM Mode

TDM format can support 2 channels, 4 channels, or 6 channels

with one device.

When BCK to LRCK ratio is 256, FMT must be configured as

TDM format.

Configure the duty cycle of LRCK when I²S is configured as

TDM mode

0: duty cycle of LRCK is 50% (default)

1: duty cycle of LRCK is 1/256 (similar DSP mode)

3-2

1-0

TX_WLEN

FMT

R/W

01b

00b

Stereo PCM Word Length

00: 32-bit

01: 24-bit (default)

10: 20-bit

11: 16-bit

Serial Audio Interface Format (TDM/DSP Mode)

0: I²S (default)

1: Left justified

2: Right justified

3: TDM/DSP (256f_SBCK is required)

95

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13.3.12 Page 0: Register 12 (address = 0x0C) [reset = 0x00]

Figure 87. Page 0: Register 12

7

6

5

4

3

2

1

0

RSV

TDM_OSEL

R/W-00b

R/W-000000b

Table 38. Page 0: Register 12 Field Descriptions

Bit

7-2

1-0

Field

Type

R/W

Reset

000000b

00b

Description

RSV

Reserved. Do not access.

Select TDM Transmission Data

TDM_OSEL

Ch2 data only available on 4-channel device.

00: 2ch TDM (default)

DOUT1: ch1[L], ch1[R]

DOUT2: ch2[L], ch2[R]

01: 4ch TDM

DOUT1: ch1[L], ch1[R], ch2[L], ch2[R]

DOUT2: ch1[L], ch1[R], ch2[L], ch2[R]

10: 6ch TDM

DOUT1: ch1[L], ch1[R], ch2[L], ch2[R], sec_ADC_LPF,

sec_ADC_HPF

DOUT2: ch1[L], ch1[R], ch2[L], ch2[R], sec_ADC_LPF,

sec_ADC_HPF

11: RESERVED

13.3.13 Page 0: Register 13 (address = 0x0D) [reset = 0x00]

Figure 88. Page 0: Register 13

7

6

5

4

3

2

1

0

TX_TDM_OFFSET

R/W-0000 0000b

Table 39. Page 0: Register 13 Field Descriptions

Bit

Field

TX_TDM_OFFSET

Type

Reset

Description

7-0

R/W

0000 0000b

Set Offset Position in Serial Audio Data Frame

This setting is enabled when 0x0B FMT[1:0] is set to DSP

format.

0: 0 (default)

1: 1 BCK (same as I²S)

2: 2 BCK

3: 3 BCK

:

255: 255 BCK

96

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13.3.14 Page 0: Register 14 (address = 0x0E) [reset = 0x00]

Figure 89. Page 0: Register 14

7

6

5

4

3

2

1

0

RX_TDM_OFFSET

R/W-0000 0000b

Table 40. Page 0: Register 14 Field Descriptions

Bit

Field

RX_TDM_OFFSET

Type

Reset

Description

7-0

R/W

0000 0000b

Set Offset Position in a Serial Audio Data Frame

This setting is enabled when I2S_RX_FMT is set to DSP

format.

Offset position in a serial audio data frame.

0: 0 (default)

1: 1 BCK (same as I²S, only if LRCK is configured as 50% duty

cycle)

2: 2 BCK

3: 3 BCK

:

255: 255 BCK

13.3.15 Page 0: Register 15 (address = 0x0F) [reset = 0x00]

Figure 90. Page 0: Register 15

7

6

5

4

3

2

1

0

DPGA_VAL_CH1_L

R/W-0000 0000b

Table 41. Page 0: Register 15 Field Descriptions

Bit

Field

DPGA_VAL_CH1_L

Type

Reset

Description

7-0

R/W

0000 0000b Gain Setting for Digital PGA Channel 1 Left

4-channel PCM186x only when is used in following scenarios:

i. Analog PGA gain and digital PGA are set separately.

ii. Digital microphone Interface is used (when manual gain

mapping is enabled in register 0x19).

Specify two's complement value with 7.1 format.

0x28 to 0x3F in 0.5-dB steps

Others: Reserved

97

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13.3.16 Page 0: Register 16 (address = 0x10) [reset = 0x01]

Figure 91. Page 0: Register 16

7

6

5

4

3

2

1

0

GPIO1_POL

R/W-0b

GPIO1_FUNC

R/W-000b

GPIO0_POL

R/W-0b

GPIO0_FUNC

R/W-001b

Table 42. Page 0: Register 16 Field Descriptions

Bit

Field

GPIO1_POL

Type

Reset

Description

7

R/W

0b

GPIO1 Polarity Control

0: Normal (default)

1: Invert

6-4

GPIO1_FUNC

R/W

000b

Function select, GPIO1

000: GPIO1(default)

001: Digital mic input 1(In)

010: INT

011: Internal SCK (Out)

100: Digital mute (In)

101: DOUT2 (Out)

110: DIN (In)

111: Reserved

3

GPIO0_POL

R/W

0b

GPIO0 Polarity Control

0: Normal (default)

1: Invert

2-0

GPIO0_FUNC

001b

Function select, GPIO0

000: GPIO0

001: Digital mic input 0 (In, default)

010: SPI MISO (Ou)

011: Internal SCK (Out)

100: Digital mute (In)

101: DOUT2 (Out)

110: DIN (In)

111: Reserved

98

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13.3.17 Page 0: Register 17 (address = 0x11) [reset = 0x20]

Figure 92. Page 0: Register 17

7

6

5

4

3

2

1

0

GPIO3_POL

R/W-0b

GPIO3_FUNC

R/W-010b

GPIO2_POL

R/W-0b

GPIO2_FUNC

R/W-000b

Table 43. Page 0: Register 17 Field Descriptions

Bit

Field

GPIO3_POL

Type

Reset

Description

7

R/W

0b

GPIO3 Polarity Control

0: Normal (default)

1: Invert

6-4

GPIO3_FUNC

R/W

010b

Function select, GPIO1

000: GPIO3

001: Reserved

010: INT (default)

011: Internal SCK (Out)

100: Digital mute (In)

101: DOUT2 (Out)

110: DIN (In)

111: Reserved

3

GPIO2_POL

R/W

0b

GPIO2 Polarity Control

0: Normal (default)

1: Invert

2-0

GPIO2_FUNC

000b

Function select, GPIO2

000: GPIO2 (default)

001: Digital mic clock output 0 (Out)

010: INT

011: Internal SCK (Out)

100: Digital mute (In)

101: DOUT2 (Out)

110: DIN (In)

111: Reserved

99

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

13.3.18 Page 0: Register 18 (address = 0x12) [reset = 0x00]

Figure 93. Page 0: Register 18

7

6

5

4

3

2

1

0

RSV

GPIO1_DIR

R/W-000b

RSV

GPIO0_DIR

R/W-000b

R/W-0b

Table 44. Page 0: Register 18 Field Descriptions

Bit

7

Field

Type

R/W

Reset

0b

Description

RSV

Reserved. Do not access.

6-4

GPIO1_DIR

000b

Direction Control of GPIO1 When Configured as GPIO

Function

000: Input (default)

001: Input with sticky bit

010: Input with toggle detection

011: Raw input (not deglictched)

100: Output

101: Open drain

110: Reserved

111: Reserved

3

RSV

R/W

0b

Reserved. Do not access.

2-0

GPIO0_DIR

000b

Direction Control of GPIO0 When Configured as GPIO

Function

000: Input (default)

001: Input with sticky bit

010: Input with toggle detection

011: Raw input (not deglictched)

100: Output

101: Open drain

110: Reserved

111: Reserved

100

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

www.ti.com.cn

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

13.3.19 Page 0: Register 19 (address = 0x13) [reset = 0x00]

Figure 94. Page 0: Register 19

7

6

5

4

3

2

1

0

RSV

GPIO3_DIR

R/W-000b

RSV

GPIO2_DIR

R/W-000b

R/W-0b

Table 45. Page 0: Register 19 Field Descriptions

Bit

7

Field

Type

R/W

Reset

0b

Description

RSV

Reserved. Do not access.

6-4

GPIO3_DIR

000b

Direction Control of GPIO3 When Configured as GPIO

Function

000: Input (default)

001: Input with sticky bit

010: Input with toggle detection

011: Raw input (not deglictched)

100: Output

101: Open drain

110: Reserved

111: Reserved

3

RSV

R/W

0b

Reserved. Do not access.

2-0

GPIO2_DIR

000b

Direction Control of GPIO2 When Configured as GPIO

Function

000: Input (default)

001: Input with sticky bit

010: Input with toggle detection

011: Raw input (not deglictched)

100: Output

101: Open drain

110: Reserved

111: Reserved

13.3.20 Page 0: Register 20 (address = 0x14) [reset = 0x00]

Figure 95. Page 0: Register 20

7

6

5

4

3

2

1

0

GPIO3_OUT

R/W-0b

GPIO2_OUT

R/W-0b

GPIO1_OUT

R/W-0b

GPIO0_OUT

R/W-0b

GPIO3_IN

R-0b

GPIO2_IN

R-0b

GPIO1_IN

R-0b

GPIO0_IN

R-0b

Table 46. Page 0: Register 20 Field Descriptions

Bit

7

Field

GPIO3_OUT

Type

R/W

Reset

0b

Description

GPIO3 Output Status

GPIO2 Output Status

GPIO1Output Status

GPIO0 Output Status

6

GPIO2_OUT

GPIO1_OUT

GPIO0_OUT

GPIO3_IN

0b

5

0b

4

0b

3

0b

GPIO3 Input Status or Toggle Status

The sticky flag is cleared when this register is read.

2

1

0

GPIO2_IN

GPIO1_IN

GPIO0_IN

R/W

0b

GPIO2 Input Status or Toggle Status

The sticky flag is cleared when this register is read.

GPIO1 Input Status or Toggle Status

The sticky flag is cleared when this register is read.

GPIO0 Input Status or Toggle Status

The sticky flag is cleared when this register is read.

101

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

13.3.21 Page 0: Register 21 (address = 0x15) [reset = 0x00]

Figure 96. Page 0: Register 21

7

6

5

4

3

2

1

0

PULL_DOWN_ PULL_DOWN_ PULL_DOWN_ PULL_DOWN_

RSV

DIS[3]

DIS[2]

DIS[1]

DIS[0]

R/W-0b

R/W-0000b

Table 47. Page 0: Register 21 Field Descriptions

Bit

Field

Type

Reset

Description

7

PULL_DOWN_DIS[3]

R/W

0b

Enable or Disable the Pull-Down Resistor of GPIO3

0: Enable the pull down of GPIO3, IntC (pin 19)

1: Disable the pull down

6

5

PULL_DOWN_DIS[2]

PULL_DOWN_DIS[1]

R/W

0b

Enable or Disable the Pull-Down Resistor of GPIO2

0: Enable the pull down of GPIO2, IntB (pin 20)

Enable or Disable the Pull-Down Resistor of GPIO1

0: Enable the pull down of GPIO1 (pin 21)

1: Disable the pull down

4

PULL_DOWN_DIS[0]

RSV

R/W

0b

Enable or Disable the Pull-Down Resistor of GPIO0

0: Enable the pull down of GPIO0 (pin 22)

1: Disable the pull down

3-0

Reserved. Do not access.

13.3.22 Page 0: Register 22 (address = 0x16) [reset = 0x00]

Figure 97. Page 0: Register 22

7

6

5

4

3

2

1

0

DPGA_VAL_CH1_R

R/W-0000 0000b

Table 48. Page 0: Register 22 Field Descriptions

Bit

Field

DPGA_VAL_CH1_R

Type

Reset

Description

7-0

R/W

0000 0000b Gain Setting for Digital PGA Channel 1 Right

4-channel PCM186x only when is used in following scenarios:

i. Analog PGA gain and digital PGA are set separately

ii. Digital microphone Interface is used (\when manual gain

mapping is enabled in register 0x19)

Specify two's complement value with 7.1 format.

0010 1000: 0.0 dB

0010 1001: 0.5 dB

0010 1010: 1.0 dB

0010 1011: 1.5 dB

:

0011 1111: 7.5 dB (max)

Others: Reserved

102

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

www.ti.com.cn

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

13.3.23 Page 0: Register 23 (address = 0x17) [reset = 0x00]

Figure 98. Page 0: Register 23

7

6

5

4

3

2

1

0

DPGA_VAL_CH2_L

R/W-0000 0000b

Table 49. Page 0: Register 23 Field Descriptions

Bit

Field

DPGA_VAL_CH2_L

Type

Reset

0000 0000b Gain Setting for Digital PGA Channel 2 Left

4-channel PCM186x only. See Page 0, Reg 0x16 description

Description

7-0

R/W

13.3.24 Page 0: Register 24 (address = 0x18) [reset = 0x00]

Figure 99. Page 0: Register 24

7

6

5

4

3

2

1

0

DPGA_VAL_CH2_R

R/W-0000 0000b

Table 50. Page 0: Register 24 Field Descriptions

Bit

Field

DPGA_VAL_CH2_R

Type

Reset

0000 0000b Gain Setting for Digital PGA channel 2 Right

4-channel PCM186x only. See Page 0, Reg 0x16 description

Description

7-0

R/W

103

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

13.3.25 Page 0: Register 25 (address = 0x19) [reset = 0x00]

Figure 100. Page 0: Register 25

7

6

5

4

3

2

1

0

DPGA_CH2_R DPGA_CH2_L DPGA_CH1_R DPGA_CH1_L APGA_CH2_R APGA_CH2_L APGA_CH1_R APGA_CH1_L

R/W-0b

Table 51. Page 0: Register 25 Field Descriptions

Bit

Field

Type

Reset

Description

7

DPGA_CH2_R

R/W

0b

DPGA Control Mapping (4-channel PCM186x only)

CH2_R channel (Note: Using manual gain mapping in the 2-

channel device sets the digital gain to 0dB.)

0: Auto gain mapping (default)

1: Manual gain mapping

6

5

4

3

2

1

0

DPGA_CH2_L

DPGA_CH1_R

DPGA_CH1_L

APGA_CH2_R

APGA_CH2_L

APGA_CH1_R

APGA_CH1_L

R/W

0b

DPGA Control Mapping (4-channel PCM186x only)

Gain control mode for digital PGA of CH2_L channel

0: Auto gain mapping (default)

1: Manual gain mapping

DPGA Control Mapping (4-channel PCM186x only)

Gain control mode for digital PGA of CH1_R channel

0: Auto gain mapping (default)

1: Manual gain mapping

DPGA Control Mapping (4-channel PCM186x only)

Gain control mode for digital PGA of CH1_L channel

0: Auto gain mapping (default)

1: Manual gain mapping

APGA Control Mapping (4-channel PCM186x only)

Gain control mode for analog PGA of CH2_R channel

0: Auto gain mapping (default)

1: Manual gain mapping

APGA Control Mapping (4-channel PCM186x only)

Gain control mode for analog PGA of CH2_L channel

0: Auto gain mapping (default)

1: Manual gain mapping

APGA Control Mapping (4-channel PCM186x only)

Gain control mode for analog PGA of CH1_R channel

0: Auto gain mapping (default)

1: Manual gain mapping

APGA Control Mapping (4-channel PCM186x only)

Gain control mode for analogPGA of CH1_L channel

0: Auto gain mapping (default)

1: Manual gain mapping

104

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

www.ti.com.cn

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

13.3.26 Page 0: Register 26 (address = 0x1A) [reset = 0x00]

Figure 101. Page 0: Register 26

7

6

5

4

3

2

1

0

DIGMIC_IN1_SEL

R/W-00b

DIGMIC_IN0_SEL

R/W-00b

RSV

DIGMIC_4CH

R/W-0b

DIGMIC_EN

R/W-0b

R/W-00b

Table 52. Page 0: Register 26 Field Descriptions

Bit

Field

Type

Reset

Description

7-6

DIGMIC_IN1_SEL

R/W

00b

Digital Mic Data Input Selection for MIC1 Interface (4-channel

devices only)

00: GPIO0 (default)

01: GPIO1

10: Invalid

11: Invalid

5-4

DIGMIC_IN0_SEL

R/W

00b

Digital Mic Data Input Selection for MIC0 Interface

00: GPIO0 (default)

01: GPIO1

10: Invalid

11: Invalid

3-2

1

RSV

R/W

00b

0b

Reserved. Do not access.

DIGMIC_4CH

Second Pair of Filters Selection for Digital Microphone as

Signal Processing (4-channel device only)

0: configured for analog ADC signal processing (default)

1: configured for digital MIC signal processing

0

DIGMIC_EN

R/W

0b

First Pair of Filters Selection for Digital Microphone as Signal

Processing

0: configured as analog ADC signal processing (default)

1: configured as digital MIC signal processing

13.3.27 Page 0: Register 27 (address = 0x1B) [reset = 0x00]

Figure 102. Page 0: Register 27

7

6

5

4

3

2

1

0

RSV

DIN_RESAMP

R/W-00b

R/W-00 0000b

Table 53. Page 0: Register 27 Field Descriptions

Bit

7-2

1-0

Field

Type

R/W

Reset

00 0000b

00b

Description

RSV

Reserved. Do not access.

DIN_RESAMP

Resample DIN with Internal BCK to Avoid Internal Timing Issue

00: No resample (default)

01: resample DIN with rising edge of BCK

10: resample DIN with falling edge of BCK

11: Not supported

105

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

13.3.28 Page 0: Register 32 (address = 0x20) [reset = 0x01]

Figure 103. Page 0: Register 32

7

6

5

4

3

2

1

0

SCK_XI_SEL

R/W-00b

MST_SCK_SR

C

MST_MODE

ADC_CLK_SR DSP2_CLK_SR DSP1_CLK_SR CLKDET_EN

C

R/W-0b

R/W-1b

Table 54. Page 0: Register 32 Field Descriptions

Bit

Field

Type

Reset

Description

7-6

SCK_XI_SEL

R/W

00b

SCK or XTAL Selection

00: SCK or XTAL (default)

01: SCK

10: XTAL

11: Reserved

5

4

3

2

1

0

MST_SCK_SRC

MST_MODE

R/W

0b

1b

Master-Mode SCK Source Selection

0: SCK or XI (default)

1: PLL (as in BCK PLL mode)

Master or Slave Selection

0: Slave (default)

1: Master

ADC_CLK_SRC

DSP2_CLK_SRC

DSP1_CLK_SRC

CLKDET_EN

ADC Clock Source Selection (ignored if CLKDET_EN = 1)

0: SCK (default)

1: PLL

DSP2 Clock Source Selection (ignored if CLKDET_EN = 1)

0: SCK (default)

1: PLL

DSP1 Clock Source Selection (ignored if CLKDET_EN = 1)

0: SCK (default)

1: PLL

Enable Auto Clock Detector Configuration

0: Disable

1: Enable (default)

13.3.29 Page 0: Register 33 (address = 0x21) [reset = 0x00]

Figure 104. Page 0: Register 33

7

6

5

4

3

2

1

0

RSV

DIV_NUM

R/W-0b

R/W-000 0000b

Table 55. Page 0: Register 33 Field Descriptions

Bit

7

Field

Type

R/W

Reset

0b

Description

RSV

Reserved. Do not access.

6-0

DIV_NUM

000 0000b

Set DSP1 Clock Divider Value

Ignored if CLKDET_EN = 1

0: 1 (default)

1: 1/2

2: 1/3

3: 1/4

:

127: 1/128

106

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

www.ti.com.cn

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

13.3.30 Page 0: Register 34 (address = 0x22) [reset = 0x01]

Figure 105. Page 0: Register 34

7

6

5

4

3

2

1

0

RSV

DIV_NUM

R/W-0b

R/W-000 0001b

Table 56. Page 0: Register 34 Field Descriptions

Bit

7

Field

Type

R/W

Reset

0b

Description

RSV

Reserved. Do not access.

6-0

DIV_NUM

000 0001b

Set DSP2 Clock Divider Value

Ignored if CLKDET_EN = 1

0: 1

1: 1/2 (default)

2: 1/3

3: 1/4

:

127: 1/128

13.3.31 Page 0: Register 35 (address = 0x23) [reset = 0x03]

Figure 106. Page 0: Register 35

7

6

5

4

3

2

1

0

RSV

DIV_NUM

R/W-0b

R/W-000 0011b

Table 57. Page 0: Register 35 Field Descriptions

Bit

7

Field

Type

R/W

Reset

0

Description

RSV

Reserved. Do not access.

6-0

DIV_NUM

000 0011b

Set ADC Clock Divider Value

Ignored if CLKDET_EN = 1

0: 1

1: 1/2

2: 1/3

3: 1/4 (default)

:

127: 1/128

107

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

13.3.32 Page 0: Register 37 (address = 0x25) [reset = 0x07]

CLK_DIV_PLL_SCK is the alternate name for this register.

Figure 107. Page 0: Register 37

7

6

5

4

3

2

1

0

RSV

DIVNUM

R/W-0b

R/W-000 0111b

Table 58. Page 0: Register 37 Field Descriptions

Bit

7

Field

Type

R/W

Reset

0

Description

RSV

Reserved. Do not access.

6-0

DIV_NUM

000 0111b

Set PLL SCK Clock Output Divider for SCK Out (when

enabled)

Used in BCK slave mode or master mode where PLL-ed SCK

Out is required. Requires MST_SCK_SRC (0x20) to be

enabled.

Divider value:

0: 1

1: 1/2

2: 1/3

3: 1/4

:

7: 1/8 (default)

:

127: 1/128

13.3.33 Page 0: Register 38 (address = 0x26) [reset = 0x03]

CLK_DIV_SCK_BCK is the alternate name for this register.

Figure 108. Page 0: Register 38

7

6

5

4

3

2

1

0

RSV

DIVNUM

R/W-0b

R/W-000 0011b

Table 59. Page 0: Register 38 Field Descriptions

Bit

7

Field

Type

R/W

Reset

0

Description

RSV

Reserved. Do not access.

6-0

DIV_NUM

000 0011b

Set Master Clock (SCK) to BCK Divider Value

Ratio of master clock (SCK) to bit clock (BCK) in master mode

Divider value:

0: 1

1: 1/2

2: 1/3

3: 1/4 (default)

:

7: 1/8

:

127: 1/128

108

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

www.ti.com.cn

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

13.3.34 Page 0: Register 39 (address = 0x27) [reset = 0x3F]

CLK_DIV_BCK_LRCK is the alternate name for this register.

Figure 109. Page 0: Register 39

7

6

5

4

3

2

1

0

DIV_NUM

R/W-0011 1111b

Table 60. Page 0: Register 39 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

DIV_NUM

R/W

0011 1111b Set Bit Clock (BCK) to LRCK Divider Value

Ratio of bit clock (BCK) to word clock (LRCK) in master mode

Divider value:

0: 1

1: 1/2

2: 1/3

3: 1/4

:

63: 1/64 (default)

:

127: 1/128

:

255: 1/256

13.3.35 Page 0: Register 40 (address = 0x28) [reset = 0x01]

Figure 110. Page 0: Register 40

7

6

5

4

3

2

1

0

RSV

LOCK

R/W-0b

RSV

PLL_REF_SEL

R/W-0b

PLL_EN

R/W-1b

R/W-000b

R/W-00b

Table 61. Page 0: Register 40 Field Descriptions

Bit

7-5

4

Field

RSV

Type

R/W

Reset

000b

0b

Description

Reserved. Do not access.

LOCK

PLL Lock Status

0: Not locked (default)

1: Locked

3-2

1

RSV

R/W

00b

0b

Reserved. Do not access.

PLL_REF_SEL

PLL Reference Clock Selection

Ignored if CLKDET_EN = 1

0: SCK (default)

1: BCK

0

PLL_EN

R/W

1b

PLL Enable

Ignored if CLKDET_EN = 1

0: Disable

1: Enable (default)

109

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

13.3.36 Page 0: Register 41 (address = 0x29) [reset = 0x00]

Figure 111. Page 0: Register 41

7

6

5

4

3

2

1

0

RSV

P

R/W-0b

R/W-000 0000b

Table 62. Page 0: Register 41 Field Descriptions

Bit

7

Field

Type

R/W

Reset

0b

Description

RSV

Reserved. Do not access.

6-0

000 0000b

PLL P Divider Value

Ignored if CLKDET_EN = 1

0: 1 (default)

1: 1/2

2: 1/3

3: 1/4

:

127: 1/128

13.3.37 Page 0: Register 42 (address = 0x2A) [reset = 0x00]

Figure 112. Page 0: Register 42

7

6

5

4

3

2

1

0

RSV

R

R/W-0000b

Table 63. Page 0: Register 42 Field Descriptions

Bit

7-4

3-0

Field

RSV

R

Type

R/W

Reset

0000b

Description

Reserved. Do not access.

PLL R Multiplier Value

Ignored if CLKDET_EN = 1

0: 1 (default)

1: 2

2: 3

3: 4

:

15 16

110

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

www.ti.com.cn

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

13.3.38 Page 0: Register 43 (address = 0x2B) [reset = 0x01]

Figure 113. Page 0: Register 43

7

6

5

4

3

2

1

0

RSV

J

R/W-0b

R/W-000 0001b

Table 64. Page 0: Register 43 Field Descriptions

Bit

7

Field

RSV

J

Type

R/W

Reset

0b

Description

Reserved. Do not access.

6-0

000 0001b

Integer Part of PLL J.D Multiplier Value

Ignored if CLKDET_EN = 1

0: (Prohibit)

1: 1 (default)

2: 2

:

63: 63

13.3.39 Page 0: Register 44 (address = 0x2C) [reset = 0x00]

Figure 114. Page 0: Register 44

7

6

5

4

3

2

1

0

D_LSB

R/W-0000 0000b

Table 65. Page 0: Register 44 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

D_LSB

R/W

0000 0000b Fractional Part of PLL J.D-Multiplier Value (least significant

bits)

Ignored if CLKDET_EN = 1

0: 0 (default)

1: 1

2: 2

:

9999: 9999 (0x270F for both registers combined)

13.3.40 Page 0: Register 45 (address = 0x2D) [reset = 0x00]

Figure 115. Page 0: Register 45

7

6

5

4

3

2

1

0

RSV

D_MSB

R/W-00b

R/W-00 0000b

Table 66. Page 0: Register 45 Field Descriptions

Bit

7-6

5-0

Field

Type

R/W

Reset

00b

Description

RSV

Reserved. Do not access.

D_MSB

00 0000b

Fractional Part of PLL J.D Multiplier Value. (most significant

bits, [13:8])

Ignored if CLKDET_EN = 1

0: 0 (default)

1: 1

2: 2

:

9999: 9999 (0x270F for both registers combined)

111

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

13.3.41 Page 0: Register 48 (address = 0x30) [reset = 0x00]

SIGDET_CH_MODE is the alternate name for this register.

Figure 116. Page 0: Register 48

7

6

5

4

3

2

1

0

CH4R

R/W-0b

CH4L

R/W-0b

CH3R

R/W-0b

CH3L

R/W-0b

CH2R

R/W-0b

CH2L

R/W-0b

CH1R

R/W-0b

CH1L

R/W-0b

Table 67. Page 0: Register 48 Field Descriptions

Bit

Field

Type

Reset

Description

7

CH4R

R/W

0b

Signal Detection Mode for Channel 4 Right

Select the signal detection mode for each channel in SLEEP

mode

0: Audio signal detection (default)

1: DC level-change detection

6

5

4

3

2

1

0

CH4L

CH3R

CH3L

CH2R

CH2L

CH1R

CH1L

R/W

0b

Signal Detection Mode for Channel 4 Left

Select the signal detection mode for each channel in SLEEP

mode

0: Audio signal detection (default)

1: DC level-change detection

Signal Detection Mode for Channel 3 Right

Select the signal detection mode for each channel in SLEEP

mode

0: Audio signal detection (default)

1: DC level-change detection

Signal Detection Mode for Channel 3 Left

Select the signal detection mode for each channel in SLEEP

mode

0: Audio signal detection (default)

1: DC level-change detection

Signal Detection Mode for Channel 2 Right

Select the signal detection mode for each channel in SLEEP

mode

0: Audio signal detection (default)

1: DC level-change detection

Signal Detection Mode for Channel 2 Left

Select the signal detection mode for each channel in SLEEP

mode

0: Audio signal detection (default)

1: DC level-change detection

Signal Detection Mode for Channel 1 Right

Select the signal detection mode for each channel in SLEEP

mode

0: Audio signal detection (default)

1: DC level-change detection

Signal Detection Mode for Channel 1 Left

Select the signal detection mode for each channel in SLEEP

mode

0: Audio signal detection (default)

1: DC level-change detection

112

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

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ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

13.3.42 Page 0: Register 49 (address = 0x31) [reset = 0x00]

SIGDET_TRIG_MASK is the alternate name for this register.

Figure 117. Page 0: Register 49

7

6

5

4

3

2

1

0

CH4R

R/W-0b

CH4L

R/W-0b

CH3R

R/W-0b

CH3L

R/W-0b

CH2R

R/W-0b

CH2L

R/W-0b

CH1R

R/W-0b

CH1L

R/W-0b

Table 68. Page 0: Register 49 Field Descriptions

Bit

Field

Type

Reset

Description

7

CH4R

R/W

0b

Mask Bits of Interrupt Trigger for Channel 4 Right

All channels are scanned, even if they are masked. Developers

can ignore specific channels and prevent them from generating

interrupts using this register

0: No mask (default)

1: Mask

6

5

4

3

2

1

0

CH4L

CH3R

CH3L

CH2R

CH2L

CH1R

CH1L

R/W

0b

Mask Bits of Interrupt Trigger for Channel 4 Left

All channels are scanned, even if they are masked. Developers

can ignore specific channels and prevent them from generating

interrupts using this register

0: No mask (default)

1: Mask

Mask Bits of Interrupt Trigger for Channel 3 Right

All channels are scanned, even if they are masked. Developers

can ignore specific channels and prevent them from generating

interrupts using this register

0: No mask (default)

1: Mask

Mask Bits of Interrupt Trigger for Channel 3 Left

All channels are scanned, even if they are masked. Developers

can ignore specific channels and prevent them from generating

interrupts using this register

0: No mask (default)

1: Mask

Mask Bits of Interrupt Trigger for Channel 2 Right

All channels are scanned, even if they are masked. Developers

can ignore specific channels and prevent them from generating

interrupts using this register

0: No mask (default)

1: Mask

Mask Bits of Interrupt Trigger for Channel 2 Left

All channels are scanned, even if they are masked. Developers

can ignore specific channels and prevent them from generating

interrupts using this register

0: No mask (default)

1: Mask

Mask Bits of Interrupt Trigger for Channel 1 Right

All channels are scanned, even if they are masked. Developers

can ignore specific channels and prevent them from generating

interrupts using this register

0: No mask (default)

1: Mask

Mask Bits of Interrupt Trigger for Channel 1 Left

All channels are scanned, even if they are masked. Developers

can ignore specific channels and prevent them from generating

interrupts using this register

0: No mask (default)

1: Mask

113

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PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

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13.3.43 Page 0: Register 50 (address = 0x32) [reset = 0x00]

SIGDET_STAT is the alternate name for this register.

Figure 118. Page 0: Register 50

7

6

5

4

3

2

1

0

CH4R

R/W-0b

CH4L

R/W-0b

CH3R

R/W-0b

CH3L

R/W-0b

CH2R

R/W-0b

CH2L

R/W-0b

CH1R

R/W-0b

CH1L

R/W-0b

Table 69. Page 0: Register 50 Field Descriptions

Bit

7

Field

Type

R/W

Reset

0b

Description

CH4R

CH4L

CH3R

CH3L

CH2R

CH2L

CH1R

CH1L

Status of Signal Level Detection in Both Energysense and

Controlsense Modes (read only). Field column indicates

respective channel.

A) In audio signal detection mode:

a) In the active or run state:

0: Signal active

1: Signal lost

b) In the sleep mode

0: Signal lost

1: Signal active

6

0b

5

0b

4

0b

3

0b

2

0b

1

0b

In automatic clipping suppression mode:

0: No change

0

0b

1: changed DC level

13.3.44 Page 0: Register 51 (address = 0x33) [reset = 0x00]

SIGDET_LOSS_TIME is the alternate name for this register.

Figure 119. Page 0: Register 51

7

6

5

4

3

2

1

0

RSV

TIME

R/W-000b

R/W-0 0001b

Table 70. Page 0: Register 51 Field Descriptions

Bit

7-5

4-0

Field

RSV

TIME

Type

R/W

Reset

000

Description

Reserved. Do not access.

0 0001b

If the signal drops below the threshold on the current audio

input for this set amount of time, the device generates an

interrupt

0: Prohibit

1: 1 minute (default)

2: 2 minutes

3: 3 minutes

:

30: 30 minutes (Max)

114

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13.3.45 Page 0: Register 52 (address = 0x34) [reset = 0x00]

SIGDET_SCAN_TIME is the alternate name for this register.

Figure 120. Page 0: Register 52

7

6

5

4

3

2

1

0

RSV

TIME

R/W-0 0000b

R/W-000b

Table 71. Page 0: Register 52 Field Descriptions

Bit

Field

RSV

TIME

Type

R/W

Reset

0 0000

000

Description

7-33

2-1

Reserved. Do not access.

Configures the scan time for each channel in the SLEEP state

000: 160 ms (default)

001: 80 ms

010: 40 ms

011: 20 ms

100: 10 ms

Others: Invalid

13.3.46 Page 0: Register 54 (address = 0x36) [reset = 0x01]

SIGDET_INT_INTVL is the alternate for this register.

Figure 121. Page 0: Register 54

7

6

5

4

3

2

1

0

RSV

R/W-0b

RSV

R/W-0b

INT_INTVL

R/W-0b

R/W-1b

Table 72. Page 0: Register 54 Field Descriptions

Bit

7-3

2-0

Field

Type

R/W

Reset

0 0000

001b

Description

RSV

Reserved. Do not access.

INT_INTVL

Interval time of the signal detector interrupt when there is

signal detection. This time value is used for energysense

wakeup from sleep interrupt and from controlsense interrupts

Interval time of the signal-resume interrupt

000: No repeat

001: 1 sec (default)

010: 2 sec

011: 3 sec

100: 4 sec

Others: Invalid

115

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PCM1863, PCM1864, PCM1865

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13.3.47 Page 0: Register 64 (address = 0x40) [reset =0x80]

SIGDET_DC_REF_CH1_L is the alternate name for this register.

Figure 122. Page 0: Register 64

7

6

5

4

3

2

1

0

REF

R/W-1000 0000b

Table 73. Page 0: Register 64 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

REF

R/W

1000 0000b Reference Level of Controlsense Detection

13.3.48 Page 0: Register 65 (address = 0x41) [reset = 0x7F]

SIGDET_DC_DIFF_CH1_L is the alternate name for this register.

Figure 123. Page 0: Register 65

7

6

5

4

3

2

1

0

DIFF

R/W-0111 1111b

Table 74. Page 0: Register 65 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

DIFF

R/W

0111 1111b Difference Level of Controlsense Detection

13.3.49 Page 0: Register 66 (address = 0x42) [reset = 0x00]

SIGDET_DC_LEVEL_CH1_L is the alternate name for this register.

Figure 124. Page 0: Register 66

7

6

5

4

3

2

1

LEVEL

R-0000 0000b

Table 75. Page 0: Register 66 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

LEVEL

R

0000 0000b Current DC Level

13.3.50 Page 0: Register 67 (address = 0x43) [reset = 0x80]

SIGDET_DC_REF_CH1_R is the alternate name for this register.

Figure 125. Page 0: Register 67

7

6

5

4

3

2

1

REF

R/W-1000 0000b

Table 76. Page 0: Register 67 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

REF

R/W

1000 0000b Reference Level of Controlsense Detection

116

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ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

13.3.51 Page 0: Register 68 (address = 0x44) [reset = 0x7F]

SIGDET_DC_DIFF_CH1_R is the alternate name for this register.

Figure 126. Page 0: Register 68

7

6

5

4

3

2

1

0

DIFF

R/W-0111 1111b

Table 77. Page 0: Register 68 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

DIFF

R/W

0111 1111b Difference Level of Controlsense Detection

13.3.52 Page 0: Register 69 (address = 0x45) [reset = 0x00]

SIGDET_DC_LEVEL_CH 1_R is the alternate name for this register.

Figure 127. Page 0: Register 69

7

6

5

4

3

2

1

0

LEVEL

R-0000 0000b

Table 78. Page 0: Register 69 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

LEVEL

R

0000 0000b Current DC Level

13.3.53 Page 0: Register 70 (address = 0x46) [reset = 0x80]

SIGDET_DC_REF_CH2_L is the alternate name for this register.

Figure 128. Page 0: Register 70

7

6

5

4

3

2

1

0

REF

R/W-1000 0000b

Table 79. Page 0: Register 70 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

REF

R/W

1000 0000b Reference Level of Controlsense Detection

13.3.54 Page 0: Register 71 (address = 0x47) [reset = 0x7F]

SIGDET_DC_DIFF_CH2_L is the alternate name for this register.

Figure 129. Page 0: Register 71

7

6

5

4

3

2

1

0

DIFF

R/W-0111 1111b

Table 80. Page 0: Register 71 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

DIFF

R/W

0111 1111b Difference Level of Controlsense Detection

117

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

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13.3.55 Page 0: Register 72 (address = 0x48) [reset = 0x00]

SIGDET_DC_LEVEL_CH2_L is the alternate name for this register.

Figure 130. Page 0: Register 72

7

6

5

4

3

2

1

0

LEVEL

R-0000 0000b

Table 81. Page 0: Register 72 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

LEVEL

R

0000 0000b Current DC Level

13.3.56 Page 0: Register 73 (address = 0x49) [reset = 0x80]

SIGDET_DC_REF_CH2_R is the alternate name for this register.

Figure 131. Page 0: Register 73

7

6

5

4

3

2

1

0

REF

R/W-1000 0000b

Table 82. Page 0: Register 73 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

REF

R/W

1000 0000b Reference Level of Controlsense Detection

13.3.57 Page 0: Register 74 (address = 0x4A) [reset = 0x7F]

SIGDET_DC_DIFF_CH2_R is the alternate name for this register.

Figure 132. Page 0: Register 74

7

6

5

4

3

2

1

DIFF

R/W-0111 1111b

Table 83. Page 0: Register 74 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

DIFF

R/W

0111 1111b Difference Level of Controlsense Detection

13.3.58 Page 0: Register 75 (address = 0x4B) [reset = 0x00]

SIGDET_DC_LEVEL_CH 2_R is the alternate name for this register.

Figure 133. Page 0: Register 75

7

6

5

4

3

2

1

LEVEL

R-0000 0000b

Table 84. Page 0: Register 75 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

LEVEL

R

0000 0000b Current DC Level

118

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

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ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

13.3.59 Page 0: Register 76 (address = 0x4C) [reset = 0x80]

SIGDET_DC_REF_CH3_L is the alternate name for this register.

Figure 134. Page 0: Register 76

7

6

5

4

3

2

1

0

REF

R/W-1000 0000b

Table 85. Page 0: Register 76 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

REF

R/W

1000 0000b Reference Level of Controlsense Detection

13.3.60 Page 0: Register 77 (address = 0x4D) [reset = 0x7F]

SIGDET_DC_DIFF_CH3_L is the alternate name for this register.

Figure 135. Page 0: Register 77

7

6

5

4

3

2

1

0

DIFF

R/W-0111 1111b

Table 86. Page 0: Register 77 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

DIFF

R/W

0111 1111b Difference Level of Controlsense Detection

13.3.61 Page 0: Register 78 (address = 0x4E) [reset = 0x00]

SIGDET_DC_LEVEL_CH3_L is the alternate name for this register.

Figure 136. Page 0: Register 78

7

6

5

4

3

2

1

0

LEVEL

R-0000 0000b

Table 87. Page 0: Register 78 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

LEVEL

R

0000 0000b Current DC Level

13.3.62 Page 0: Register 79 (address = 0x4F) [reset = 0x80]

SIGDET_DC_REF_CH3_R is the alternate name for this register.

Figure 137. Page 0: Register 79

7

6

5

4

3

2

1

0

REF

R/W-1000 0000b

Table 88. Page 0: Register 79 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

REF

R/W

1000 0000b Reference Level of Controlsense Detection

119

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

13.3.63 Page 0: Register 80 (address = 0x50) [reset = 0x7F]

SIGDET_DC_DIFF_CH3_R is the alternate name for this register.

Figure 138. Page 0: Register 80

7

6

5

4

3

2

1

0

DIFF

R/W-0111 1111b

Table 89. Page 0: Register 80 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

DIFF

R/W

0111 1111b Difference Level of Controlsense Detection

13.3.64 Page 0: Register 81 (address = 0x51) [reset = 0x00]

SIGDET_DC_LEVEL_CH3_R is the alternate name for this register.

Figure 139. Page 0: Register 81

7

6

5

4

3

2

1

0

LEVEL

R-0000 0000b

Table 90. Page 0: Register 81 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

LEVEL

R

0000 0000b Current DC Level

13.3.65 Page 0: Register 82 (address = 0x52) [reset = 0x80]

SIGDET_DC_REF_CH4_L is the alternate name for this register.

Figure 140. Page 0: Register 82

7

6

5

4

3

2

1

REF

R/W-1000 0000b

Table 91. Page 0: Register 82 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

REF

R/W

1000 0000b Reference Level of Controlsense Detection

13.3.66 Page 0: Register 83 (address = 0x53) [reset = 0x7F]

SIGDET_DC_DIFF_CH4_L is the alternate name for this register.

Figure 141. Page 0: Register 83

7

6

5

4

3

2

1

DIFF

R/W-0111 1111b

Table 92. Page 0: Register 83 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

DIFF

R/W

0111 1111b Difference Level of Controlsense Detection

120

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13.3.67 Page 0: Register 84 (address = 0x54) [reset = 0x00]

SIGDET_DC_LEVEL_CH4_L is the alternate name for this register.

Figure 142. Page 0: Register 84

7

6

5

4

3

2

1

0

LEVEL

R-0000 0000b

Table 93. Page 0: Register 84 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

LEVEL

R

0000 0000b Current DC Level

13.3.68 Page 0: Register 85 (address = 0x55) [reset = 0x80]

SIGDET_DC_REF_CH4_R is the alternate name for this register.

Figure 143. Page 0: Register 82

7

6

5

4

3

2

1

0

REF

R/W-1000 0000b

Table 94. Page 0: Register 85 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

REF

R/W

1000 0000b Reference Level of Controlsense Detection

13.3.69 Page 0: Register 86 (address = 0x56) [reset = 0x7F]

SIGDET_DC_DIFF_CH4_R is the alternate name for this register.

Figure 144. Page 0: Register 86

7

6

5

4

3

2

1

0

DIFF

R/W-0111 1111b

Table 95. Page 0: Register 86 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

DIFF

R/W

0111 1111b Difference Level of Controlsense Detection

13.3.70 Page 0: Register 87 (address = 0x57) [reset = 0x00]

Figure 145. Page 0: Register 84

7

6

5

4

3

2

1

0

LEVEL

R-0000 0000b

Table 96. Page 0: Register 87 Field Descriptions

Bit

Field

Type

Reset

Description

7-0

LEVEL

R

0000 0000b Current DC Level

121

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

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13.3.71 Page 0: Register 88 (address = 0x58) [reset = 0x00]

AUXADC_DATA_CTRL is the alternate name for this register.

Figure 146. Page 0: Register 88

7

6

5

4

3

2

1

0

AUXADC_LAT AUXADC_DAT

DC_NOLATCH AUXADC_RDY

DC_RDY

R/W-0b

DC_CH

R/W-000b

CH

A_TYPE

R/W-0b

Table 97. Page 0: Register 88 Field Descriptions

Bit

Field

Type

Reset

Description

7

DC_NOLATCH

R/W

0b

Read Without Latch

Read directly without latch operation (from secondary ADC)

0: With latch operation (default)

1: Without latch operation when read dc value

6

AUXADC_RDY

R/W

0b

AUXADC Ready

Indicate latch operation is finished and AUXADC value is ready

for read operation.

0: Latch operation is running (default)

1: AUXADC value is ready for read operation

5

4

DC_RDY

R/W

0b

DC Ready

Indicate latch operation is finished and dc value is ready.

0: Latch operation is running (default)

1: DC value is ready for read operation

AUXADC_LATCH

AUXADC Latch

Trigger to latch 16-bit AUXADC value for read operation: rising

edge is the trigger signal

0: Idle (default)

1: Latch the value for read operation

3

AUXADC_DATA_TYPE

DC_CH[2:0]

R/W

0b

Data to be Read From Control Interface

0: read LPF data (default)

1: read HPF data

2-0

000b

DC-Value Channel Select

Select dc-value channel to be latched for control-interface read

operation

000: CH1_L (default)

001: CH1_R

010: CH2_L

011: CH2_R

100: CH3_L

101: CH3_R

110: CH4_L

111: CH4_R

13.3.72 Page 0: Register 89 (address = 0x59) [reset = 0x00]

Figure 147. Page 0: Register 89

7

6

5

4

3

2

1

0

AUXADC_DATA_LSB

R-0000 0000b

Table 98. Page 0: Register 89 Field Descriptions

Bit

Field

AUXADC_DATA_LSB

Type

Reset

0000 0000b Low Byte of Secondary ADC Output

The data depends on AUXADC_DATA_TYPE setting

Description

7-0

R

AUXADC_DATA_TYPE = 0: reading LPF of secondary ADC

AUXADC_DATA_TYPE = 1: reading HPF of secondary ADC

122

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

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ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

13.3.73 Page 0: Register 90 (address = 0x5A) [reset = 0x00]

Figure 148. Page 0: Register 90

7

6

5

4

3

2

1

0

AUXADC_DATA_MSB

R-0000 0000b

Table 99. Page 0: Register 90 Field Descriptions

Bit

Field

AUXADC_DATA_MSB

Type

Reset

Description

7-0

R

0000 0000b High Byte of Secondary ADC Output [15:8]

The data depends on AUXADC_DATA_TYPE setting

AUXADC_DATA_TYPE = 0: reading LPF of secondary ADC

AUXADC_DATA_TYPE = 1: reading HPF of secondary ADC

13.3.74 Page 0: Register 96 (address = 0x60) [reset = 0x01]

Figure 149. Page 0: Register 96

7

6

5

4

3

2

1

0

RSV

POSTPGA_CP

R/W-0b

RSV

R/W-0b

DC_CHANG

R/W-0b

DIN_TOGGLE

R/W-0b

ENGSTR

R/W-1b

R/W-000b

Table 100. Page 0: Register 96 Field Descriptions

Bit

7-5

4

Field

Type

R/W

Reset

000b

0b

Description

RSV

Reserved. Always write 000b.

POSTPGA_CP

Enable the Post-PGA Clipping Interrupt

Write 0 to clear interrupts, all bits in this register

0: Disable (default)

1: Enable

3

2

RSV

R/W

0b

Reserved. Always write 0b.

DC_CHANG

Enable the DC Level Change Interrupt

0: Disable (default)

1: Enable

1

0

DIN_TOGGLE

ENGSTR

R/W

0b

1b

Enable I2S RX DIN toggle Interrupt

0: Disable (default)

1: Enable

Enable the energysense Interrupt

0: Disable

1: Enable (default)

123

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PCM1863, PCM1864, PCM1865

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13.3.75 Page 0: Register 97 (address = 0x61) [reset = 0x00]

Figure 150. Page 0: Register 97

7

6

5

4

3

2

1

0

RSV

POSTPGA_CP

R-0b

RSV

R-0b

DC_CHANG

R-0b

DIN_TOGGLE

R-0b

ENGSTR

R-0b

R-000b

Table 101. Page 0: Register 97 Field Descriptions

Bit

7-5

4

Field

Type

R

Reset

000b

0b

Description

RSV

Reserved. Always write 000b.

POSTPGA_CP

R

Status of Post-PGA Clipping Interrupt

Write 0 to register 0x60 clear interrupts, all bits in this register

0: None

1: Interrupt occurred

3

2

RSV

R

0b

Reserved. Always write 0b.

DC_CHANG

Status of the DC Level Change Interrupt

0: None

1: Interrupt occurred

1

0

DIN_TOGGLE

ENGSTR

R

0b

Status of I2S RX DIN toggle Interrupt

0: None

1: Interrupt occurred

Status of the energysense Interrupt

0: None

1: Interrupt occurred

13.3.76 Page 0: Register 98 (address = 0x62) [reset =0x10]

Figure 151. Page 0: Register 98

7

6

5

4

3

2

1

0

RSV

POL

RSV

WIDTH

R/W-00b

R/W-01b

R/W-00b

Table 102. Page 0: Register 98 Field Descriptions

Bit

7-5

5-4

Field

RSV

POL

Type

R/W

Reset

00b

Description

Reserved. Always write 00b.

01b

Polarity of the Interrupt Pulse

00: Low active

01: High active (default)

10: Open drain (L-Active)

11: Reserved

3-2

1-0

RSV

R/W

00b

Reserved. Always write 00b.

WIDTH

Width of the Interrupt Pulse

00: 1 ms (default)

01: 2 ms

10: 3 ms

11: Infinity for level sense

124

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

www.ti.com.cn

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

13.3.77 Page 0: Register 112 (address = 0x70) [reset = 0x70]

Figure 152. Page 0: Register 112

7

6

5

4

3

2

1

0

RSV

PWRDN

R/W-0b

SLEEP

R/W-0b

STBY

R/W-0b

R/W-0 1110b

Table 103. Page 0: Register 112 Field Descriptions

Bit

7-3

2

Field

Type

R/w

Reset

0 1110b

0b

Description

RSV

Reserved. Always write 0 1110b

PWRDN

R/W

Enter Analog Power Down State

0: Power Up (default)

1: Power Down

1

0

SLEEP

STBY

R/W

0b

Enter the Device Sleep State

After the chip enters SLEEP state, energysense application will

be triggered.

0: Power Up (default)

1: Sleep

Enter Digital Standby State

0: Run (default)

1: Standby

13.3.78 Page 0: Register 113 (address = 0x71) [reset = 0x10]

DSP_CTRL is the alternate name for this register.

Figure 153. Page 0: Register 113

7

6

5

4

3

2

1

0

2CH

RSV

FLT

HPF_EN

R/W-1b

MUTE_CH2_R MUTE_CH2_L MUTE_CH1_R MUTE_CH1_L

R/W-0b

Table 104. Page 0: Register 113 Field Descriptions

Bit

Field

Type

Reset

Description

7

2CH

R/W

0b

Processing Mode Selection

Select the processing mode for 4-channel device only. This

configuration CANNOT be changed on the fly in RUN state.

0: 4 channels (default)

1: 2 channels

6

5

RSV

FLT

R/W

0b

Reserved. Always write 0b.

Select Decimation Filter Type

0: Normal (default)

1: Short latency

4

3

2

1

0

HPF_EN

R/W

1b

0b

Enable High-Pass Filter

0: Disable

1: Enable (default)

MUTE_CH2_R

MUTE_CH2_L

MUTE_CH1_R

MUTE_CH1_L

Mute Ch2(R)

0: Unmute (default)

1: Mute

Mute Ch2(L)

0: Unmute (default)

1: Mute

Mute Ch1(R)

0: Unmute (default)

1: Mute

Mute Ch1(L)

0: Unmute (default)

1: Mute

125

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

13.3.79 Page 0: Register 114 (address = 0x72) [reset = 0x00]

Figure 154. Page 0: Register 114

7

6

5

4

3

2

1

0

RSV

STATE

R-0000b

Table 105. Page 0: Register 114 Field Descriptions

Bit

7-4

3-0

Field

RSV

Type

R

Reset

0000b

Description

Reserved. Always write 0000b.

STATE

R

Device Current Status

0000: Power down (default)

0001: Wait clock stable

0010: Release reset

0011: Stand-by

0100: Fade IN

0101: Fade OUT

0110: Reserved

0111: Reserved

1000: Reserved

1001: Sleep

1010: Reserved

1011: Reserved

1100: Reserved

1101: Reserved

1110: Reserved

1111: Run

13.3.80 Page 0: Register 115 (address = 0x73) [reset = 0x00]

Figure 155. Page 0: Register 115

7

6

5

4

3

2

1

0

RSV

INFO

R-000b

R-0 0000b

Table 106. Page 0: Register 115 Field Descriptions

Bit

7-3

2-0

Field

RSV

INFO

Type

R

Reset

0 0000b

000b

Description

Reserved. Always write 0 0000b.

R

Current Sampling Frequency

000: Out of range (Low) or LRCK Halt (default)

001: 8 kHz

010: 16 kHz

011: 32 khz to 48 kHz

100: 88.2 kHz to 96 kHz

101: 176.4 kHz to 192 kHz

110: Out of range (High)

111: Invalid f_S

126

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

www.ti.com.cn

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

13.3.81 Page 0: Register 116 (address = 0x74) [reset = 0x00]

Figure 156. Page 0: Register 116

7

6

5

4

3

2

1

0

RSV

R-0b

BCK_RATIO

R-000b

RSV

R-0b

SCK_RATIO

R-000b

Table 107. Page 0: Register 116 Field Descriptions

Bit

Field

Type

R

Reset

0b

Description

7

RSV

Reserved. Always write 0 0000b.

6-4

BCK_RATIO

R

000b

Current Receiving BCK Ratio

Default value: 000 (default)

000: Out of range (L) or BCK Halt

001: 32

010: 48

011: 64

100: 256

101: (Not assigned)

110: Out of range (H)

111: Invalid BCK ratio or LRCK Halt

3

RSV

R

0b

Reserved. Always write 0 0000b.

2-0

SCK_RATIO

000b

Current SCK Ratio

000: Out of range (L) or SCK Halt (default)

001: 128

010: 256

011: 384

100: 512

101: 768

110: Out of range (H)

111: Invalid SCK ratio or LRCK Halt

127

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

13.3.82 Page 0: Register 117 (address = 0x75) [reset = 0x00]

CLK_ERR_STAT is the alternate name for this register.

Figure 157. Page 0: Register 117

7

6

5

4

3

2

1

0

RSV

R-0b

LRCKHLT

R-0b

BCKHLT

R-0b

SCKHTL

R-0b

RSV

R-0b

LRCKERR

R-0b

BCKERR

R-0b

SCKERR

R-0b

Table 108. Page 0: Register 117 Field Descriptions

Bit

Field

Type

R

Reset

0b

Description

7

6

RSV

Reserved. Always write 0b.

LRCKHLT

BCKHLT

SCKHTL

R

0b

LRCK Halt Status

0: No Error (default)

1: Halt

5

4

R

0b

BCK Halt Status

0: No Error (default)

1: Halt

SCK Halt Status

0: No Error (default)

1: Halt

3

2

RSV

R

0b

Reserved. Always write 0b.

LRCKERR

LRCK Error Status

0: No Error (default)

1: Error

1

0

BCKERR

SCKERR

R

0b

BCK Error Status

0: No Error (default)

1: Error

SCK Error Status

0: No Error (default)

1: Error

13.3.83 Page 0: Register 120 (address = 0x78) [reset = 0x00]

Figure 158. Page 0: Register 120

7

6

5

4

3

2

1

0

RSV

DVDD

R/W-0b

AVDD

R/W-0b

LDO

R/W-0b

Table 109. Page 0: Register 120 Field Descriptions

Bit

7-3

2

Field

RSV

Type

R

Reset

0 0000b

0b

Description

Reserved. Always write 0 0000b.

DVDD

R

DVDD Status

0:Bad or Missing (default)

1:Good

1

0

AVDD

LDO

R

0b

AVDD Status

0:Bad or issing (default)

1:Good

Digital LDO Status

0:Bad or Missing (default)

1:Good

128

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

www.ti.com.cn

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

13.4 Page 1 Registers

13.4.1 Page 1: Register 1 (address = 0x01) [reset = 0x00]

Figure 159. Page 1: Register 1

7

6

5

4

3

2

1

0

RSV

DONE

R-0b

RSV

BUSY

R-0b

R_REQ

R/W-0b

W_REQ

R/W-0b

R/W-000b

R/W-0b

Table 110. Page 1: Register 1 Field Descriptions

Bit

7-5

4

Field

RSV

Type

R/W

R

Reset

000b

0b

Description

Reserved. Always write 000b.

DONE

Done Status Flag

1: Write or read operation is done with one cycle as indicator

0: Idle or is busy (default)

3

2

RSV

R/W

R

0b

Reserved. Always write 000b.

BUSY

Busy Status Flag

1: Write or read operation is running and not finished

0: Write or read operation is finished (default)

1

0

R_REQ

W_REQ

R/W

0b

Memory Mapper Register Access to DSP-2 - READ

1: Request read operation

0: The read operation is done and data is ready to read from

I²C/SPI interface (default)

Memory Mapper Register Access to DSP-2 - WRITE

1: Request write operation

0: The write operation is done and is ready for next write

operation command (default)

13.4.2 Page 1: Register 2 (address = 0x02) [reset = 0x00]

Figure 160. Page 1: Register 2

7

6

5

4

3

2

1

0

RSV

MEM_ADDR

R/W-0b

R/W-000 0000b

Table 111. Page 1: Register 2 Field Descriptions

Bit

7

Field

Type

R/W

Reset

0b

Description

RSV

Reserved. Always write 0b.

Memory Mapped Register Address

6-0

MEM_ADDR

000 0000b

Status of the memory mapped register access

13.4.3 Page 1: Register 4 (address = 0x04) [reset = 0x00]

Figure 161. Page 1: Register 4

7

6

5

4

3

2

1

0

MEM_WDATA_0

R/W-0000 0000b

Table 112. Page 1: Register 4 Field Descriptions

Bit

Field

MEM_WDATA_0

Type

Reset

Description

7-0

R/W

0000 0000b Write Data to 24-Bit Memory

Coefficient [23:16]

129

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

13.4.4 Page 1: Register 5 (address = 0x05) [reset = 0x00]

Figure 162. Page 1: Register 5

7

6

5

4

3

2

1

0

MEM_WDATA_1

R/W-0000 0000b

Table 113. Page 1: Register 5 Field Descriptions

Bit

Field

MEM_WDATA_1

Type

Reset

Description

7-0

R/W

0000 0000b Write Data to 24-Bit Memory

Coefficient [15:8]

13.4.5 Page 1: Register 6 (address = 0x06) [reset = 0x00]

Figure 163. Page 1: Register 6

7

6

5

4

3

2

1

0

MEM_WDATA_2

R/W-0000 0000b

Table 114. Page 1: Register 6 Field Descriptions

Bit

Field

MEM_WDATA_2

Type

Reset

Description

7-0

R/W

0000 0000b Write Data to 24-Bit Memory

Coefficient [7:0]

13.4.6 Page 1: Register 7 (address = 0x07) [reset = 0x00]

Figure 164. Page 1: Register 7

7

6

5

4

3

2

1

0

MEM_WDATA_

3

RSV

R/W-0b

R/W-000 0000b

Table 115. Page 1: Register 7 Field Descriptions

Bit

Field

Type

Reset

Description

7

MEM_WDATA_2

R/W

0b

Write Data to 24-Bit Memory

Reserved

6-0

RSV

R/W

000 0000b

Reserved. Always write 000 0000b.

13.4.7 Page 1: Register 8 (address = 0x08) [reset = 0x00]

Figure 165. Page 1: Register 8

7

6

5

4

3

2

1

0

MEM_RDATA_0

R-0000 0000b

Table 116. Page 1: Register 8 Field Descriptions

Bit

Field

MEM_RDATA_0

Type

Reset

Description

7-0

R

0000 0000b Read Data from 24-Bit Memory

Coefficient [23:16]

130

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

www.ti.com.cn

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

13.4.8 Page 1: Register 9 (address = 0x09) [reset = 0x00]

Figure 166. Page 1: Register 9

7

6

5

4

3

2

1

0

MEM_RDATA_1

R-0000 0000b

Table 117. Page 1: Register 9 Field Descriptions

Bit

Field

MEM_RDATA_1

Type

Reset

Description

7-0

R

0000 0000b Read Data from 24-Bit Memory

Coefficient [15:8]

13.4.9 Page 1: Register 10 (address = 0x0A) [reset = 0x00]

Figure 167. Page 1: Register 10

7

6

5

4

3

2

1

0

MEM_RDATA_2

R-0000 0000b

Table 118. Page 1: Register 10 Field Descriptions

Bit

Field

MEM_RDATA_2

Type

Reset

Description

7-0

R

0000 0000b Read Data from 24-Bit Memory

Coefficient [7:0]

13.4.10 Page 1: Register 11 (address = 0x0B) [reset = 0x00]

Figure 168. Page 1: Register 11

7

6

5

4

3

2

1

0

MEM_RDATA_

3

RSV

R/W-0b

R/W-000 0000b

Table 119. Page 1: Register 11 Field Descriptions

Bit

Field

Type

Reset

Description

7

MEM_RDATA_3

R

0b

Read Data from 24-Bit Memory

Reserved

6-0

RSV

R/W

000 0000b

Reserved. Always write 000 0000b.

131

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

13.5 Page 3 Registers

13.5.1 Page 3: Register 18 (address = 0x12) [reset =0x40]

Figure 169. Page 3: Register 18

7

6

5

4

3

2

1

0

RSV

PD

R/W-010 0000b

R/W-0b

Table 120. Page 3: Register 18 Field Descriptions

Bit

7-1

0

Field

RSV

PD

Type

R/W

Reset

010 0000b

0b

Description

Reserved. Always write 010 0000b

Oscillator Power Down Control

0: Power up (default)

1: Power down

13.5.2 Page 3: Register 21 (address = 0x15) [reset = 0x01]

Figure 170. Page 3: Register 21

7

6

5

4

3

2

1

0

RSV

TERM

W-0b

RSV

PDZ

W-1b

R/W-000b

Table 121. Page 3: Register 21 Field Descriptions

Bit

7-5

4

Field

RSV

Type

R/W

W

Reset

000b

0b

Description

Reserved. Always write 000b.

TERM

Mic Bias Resistor Bypass (Write only)

0: Disable (default)

1: Enable

3-1

0

RSV

PDZ

R/W

W

000b

0b

Reserved. Always write 000b.

Mic Bias Control (Write only)

0: Power down

1: Power up (default)

132

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

www.ti.com.cn

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

13.6 Page 253 Registers

13.6.1 Page 253: Register 20 (address = 0x14) [reset = 0x00]

Figure 171. Page 253: Register 20

7

6

5

4

3

2

1

0

PGA_ICI

R/W-00b

REF_ICI

R/W-00b

RSV

R/W-0000b

Table 122. Page 253: Register 20 Field Descriptions

Bit

Field

Type

Reset

Description

7-6

PGA_ICI

R/W

00b

PGA Bias Current Trim

00: 100% (default)

01: Reserved

10: 75%

11: Reserved

5-4

3-0

REF_ICI

RSV

R/W

00b

Global bias current trim

00: 100% (default)

01: 75%

10: Reserved

11: Reserved

0000b

Reserved. Always write 0000b.

133

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

www.ti.com.cn

14 器件和文档支持

14.1 文档支持

14.1.1 相关文档

《PCM186x EVM 用户指南》

14.2 相关链接

表 123 列出了快速访问链接。类别包括技术文档、支持和社区资源、工具和软件，以及立即购买的快速链接。

表 123. 相关链接

器件

产品文件夹

请单击此处

立即订购

请单击此处

技术文档

请单击此处

工具和软件

请单击此处

支持和社区

请单击此处

PCM1860

PCM1861

PCM1862

PCM1863

PCM1864

PCM1865

14.3 接收文档更新通知

要接收文档更新通知，请导航至 TI.com.cn 上的器件产品文件夹。请单击右上角的提醒我进行注册，即可每周接收

产品信息更改摘要。有关更改的详细信息，请查看任何已修订文档中包含的修订历史记录。

14.4 社区资源

下列链接提供到 TI 社区资源的连接。链接的内容由各个分销商“按照原样”提供。这些内容并不构成 TI 技术规范，

并且不一定反映 TI 的观点；请参阅 TI 的《使用条款》。

TI E2E™ 在线社区 TI 的工程师对工程师 (E2E) 社区。此社区的创建目的在于促进工程师之间的协作。在

e2e.ti.com 中，您可以咨询问题、分享知识、拓展思路并与同行工程师一道帮助解决问题。

设计支持

TI 参考设计支持可帮助您快速查找有帮助的 E2E 论坛、设计支持工具以及技术支持的联系信息。

14.5 商标

E2E is a trademark of Texas Instruments.

蓝牙 is a registered trademark of Bluetooth SIG, Inc..

All other trademarks are the property of their respective owners.

14.6 静电放电警告

ESD 可能会损坏该集成电路。德州仪器 (TI) 建议通过适当的预防措施处理所有集成电路。如果不遵守正确的处理措施和安装程序 , 可

能会损坏集成电路。

ESD 的损坏小至导致微小的性能降级 , 大至整个器件故障。精密的集成电路可能更容易受到损坏 , 这是因为非常细微的参数更改都可

能会导致器件与其发布的规格不相符。

14.7 Glossary

SLYZ022 — TI Glossary.

This glossary lists and explains terms, acronyms, and definitions.

134

PCM1860, PCM1861, PCM1862

PCM1863, PCM1864, PCM1865

www.ti.com.cn

ZHCSCB3D –MARCH 2014–REVISED MARCH 2018

15 机械、封装和可订购信息

以下页面包含机械、封装和可订购信息。这些信息是指定器件的最新可用数据。数据如有变更，恕不另行通知，且

不会对此文档进行修订。如需获取此数据表的浏览器版本，请查阅左侧的导航栏。

135

PACKAGE MATERIALS INFORMATION

www.ti.com

5-Jan-2022

TAPE AND REEL INFORMATION

*All dimensions are nominal

Device

Package Package Pins

Type Drawing

SPQ

Reel

A0

B0

K0

P1

W

Pin1

Diameter Width (mm) (mm) (mm) (mm) (mm) Quadrant

(mm) W1 (mm)

PCM1860DBTR

PCM1861DBTR

PCM1862DBTR

PCM1863DBTR

PCM1864DBTR

PCM1865DBTR

TSSOP

DBT

30

2000

330.0

16.4

6.95

8.3

1.6

8.0

16.0

Q1

Pack Materials-Page 1

PACKAGE MATERIALS INFORMATION

www.ti.com

5-Jan-2022

*All dimensions are nominal

Device

Package Type Package Drawing Pins

SPQ

Length (mm) Width (mm) Height (mm)

PCM1860DBTR

PCM1861DBTR

PCM1862DBTR

PCM1863DBTR

PCM1864DBTR

PCM1865DBTR

TSSOP

DBT

30

2000

350.0

43.0

Pack Materials-Page 2

PACKAGE MATERIALS INFORMATION

www.ti.com

5-Jan-2022

TUBE

*All dimensions are nominal

Device

Package Name Package Type

Pins

SPQ

L (mm)

W (mm)

T (µm)

B (mm)

PCM1860DBT

PCM1861DBT

PCM1862DBT

PCM1863DBT

PCM1864DBT

PCM1865DBT

DBT

TSSOP

30

60

530

10.2

3600

3.5

Pack Materials-Page 3

重要声明和免责声明

TI“按原样”提供技术和可靠性数据（包括数据表）、设计资源（包括参考设计）、应用或其他设计建议、网络工具、安全信息和其他资源，

不保证没有瑕疵且不做出任何明示或暗示的担保，包括但不限于对适销性、某特定用途方面的适用性或不侵犯任何第三方知识产权的暗示担

保。

这些资源可供使用 TI 产品进行设计的熟练开发人员使用。您将自行承担以下全部责任：(1) 针对您的应用选择合适的 TI 产品，(2) 设计、验

证并测试您的应用，(3) 确保您的应用满足相应标准以及任何其他功能安全、信息安全、监管或其他要求。

这些资源如有变更，恕不另行通知。TI 授权您仅可将这些资源用于研发本资源所述的 TI 产品的应用。严禁对这些资源进行其他复制或展示。

您无权使用任何其他 TI 知识产权或任何第三方知识产权。您应全额赔偿因在这些资源的使用中对 TI 及其代表造成的任何索赔、损害、成

本、损失和债务，TI 对此概不负责。

TI 提供的产品受 TI 的销售条款或 ti.com 上其他适用条款/TI 产品随附的其他适用条款的约束。TI 提供这些资源并不会扩展或以其他方式更改

TI 针对 TI 产品发布的适用的担保或担保免责声明。

TI 反对并拒绝您可能提出的任何其他或不同的条款。IMPORTANT NOTICE

邮寄地址：Texas Instruments, Post Office Box 655303, Dallas, Texas 75265


型号：	PCM1860DBTR
厂家：	TEXAS INSTRUMENTS
描述：	具有通用前端的 103dB、2 通道硬件控制型音频 ADC \| DBT \| 30 \| -40 to 125 光电二极管转换器
文件：	总144页 (文件大小：2847K)
中文：	中文翻译
下载：	下载PDF数据表文档文件

PCM1860DBTR [TI]

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