ADAU1977WBCPZ-R7 datasheet(2/64 Pages) AD

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ADAU1977

Data Sheet

Rev. A | Page 2 of 64

TABLE OF CONTENTS

Features .............................................................................................. 1

Applications....................................................................................... 1

General Description ......................................................................... 1

Functional Block Diagram .............................................................. 1

Revision History ............................................................................... 2

Specifications..................................................................................... 3

Analog Performance Specifications ........................................... 3

Diagnostic and Fault Specifications........................................... 4

Digital Input/Output Specifications........................................... 5

Power Supply Specifications........................................................ 5

Digital Filters Specifications ....................................................... 6

Timing Specifications .................................................................. 7

Absolute Maximum Ratings............................................................ 9

Thermal Resistance ...................................................................... 9

ESD Caution.................................................................................. 9

Pin Configuration and Function Descriptions........................... 10

Typical Performance Characteristics ........................................... 12

Theory of Operation ...................................................................... 14

Overview...................................................................................... 14

Power Supply and Voltage Reference....................................... 14

Power-On Reset Sequence ........................................................ 14

PLL and Clock............................................................................. 15

DC-to-DC Boost Converter...................................................... 16

Microphone Bias......................................................................... 17

Analog Inputs.............................................................................. 17

ADC ............................................................................................. 21

ADC Summing Modes .............................................................. 21

Diagnostics .................................................................................. 21

Serial Audio Data Output Ports—Data Format ..................... 23

Control Ports................................................................................... 28

I2C Mode...................................................................................... 29

SPI Mode ..................................................................................... 32

Master Power and Soft Reset Register..................................... 35

PLL Control Register ................................................................. 36

DC-to-DC Boost Converter Control Register ....................... 37

MICBIAS and Boost Control Register .................................... 38

Block Power Control and Serial Port Control Register......... 39

Serial Port Control Register1.................................................... 40

Serial Port Control Register2.................................................... 41

Channel Mapping for Output Serial Ports Register............... 42

Channel Mapping for Output Serial Ports Register............... 44

Serial Output Drive and Overtemperature Protection

Control Register ......................................................................... 46

Post ADC Gain Channel 1 Control Register.......................... 47

Post ADC Gain Channel 2 Control Register.......................... 48

Post ADC Gain Channel 3 Control Register.......................... 49

Post ADC Gain Channel 4 Control Register.......................... 50

High-Pass Filter and DC Offset Control Register and

Master Mute ................................................................................ 51

Diagnostics Control Register.................................................... 52

Diagnostics Report Register Channel 1 .................................. 53

Diagnostics Report Register Channel 2 .................................. 54

Diagnostics Report Register Channel 3 .................................. 55

Diagnostics Report Register Channel 4 .................................. 56

Diagnostics Interrupt Pin Control Register 1......................... 57

Diagnostics Interrupt Pin Control Register 2......................... 58

Diagnostics Adjustments Register 1 ........................................ 59

Diagnostics Adjustments Register 2 ........................................ 60

ADC Clipping Status Register .................................................. 61

Digital DC High-Pass Filter and Calibration Register.......... 62

Applications Circuit ....................................................................... 63

Outline Dimensions....................................................................... 64

Ordering Guide .......................................................................... 64

Automotive Products................................................................. 64

REVISION HISTORY

3/13—Rev. 0 to Rev. A

Changed CP-40-9 to CP-40-14.........................................Universal

Changes to Hysteresis AINxP and AINxN Shorted Together

Parameter, Table 2..............................................................................4

Changes to Thermal Resistance Section and Table 8....................9

Changes to SPI Mode Section........................................................32

Changes to Channel Mapping for Output Serial Ports Register

Section and Table 34 .......................................................................44

Changes to Figure 46.......................................................................63

Changes to Ordering Guide...........................................................64

1/13—Revision 0: Initial Version

ADAU1977WBCPZ-R7 Datasheet(PDF) 2 Page - Analog Devices

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