ADAU1772BCPZ-R7 datasheet(3/117 Pages) AD

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ADAU1772

Data Sheet

Rev. C | Page 2 of 116

TABLE OF CONTENTS

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

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

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

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

Revision History ............................................................................... 3

Specifications..................................................................................... 4

Analog Performance Specifications ........................................... 4

Crystal Amplifier Specifications................................................. 7

Digital Input/Output Specifications........................................... 8

Power Supply Specifications........................................................ 8

Typical Power Consumption....................................................... 9

Digital Filters................................................................................. 9

Digital Timing Specifications ................................................... 10

Absolute Maximum Ratings.......................................................... 14

Thermal Resistance .................................................................... 14

ESD Caution................................................................................ 14

Pin Configuration and Function Descriptions........................... 15

Typical Performance Characteristics ........................................... 17

System Block Diagrams ................................................................. 28

Theory of Operation ...................................................................... 29

System Clocking and Power-Up................................................... 30

Clock Initialization..................................................................... 30

PLL ............................................................................................... 30

Clock Output............................................................................... 31

Power Sequencing ...................................................................... 31

Signal Routing................................................................................. 32

Input Signal Paths........................................................................... 33

Analog Inputs.............................................................................. 33

Digital Microphone Input ......................................................... 34

Analog-to-Digital Converters................................................... 34

Output Signal Paths........................................................................ 35

Analog Outputs........................................................................... 35

Digital-to-Analog Converters................................................... 35

PDM Output ............................................................................... 35

Asynchronous Sample Rate Converters .................................. 36

Signal Levels ................................................................................ 36

Signal Processing ............................................................................ 37

Instructions ................................................................................. 37

Data Memory .............................................................................. 37

Parameters ................................................................................... 37

Control Port .................................................................................... 40

I2C Port ........................................................................................ 40

SPI Port ........................................................................................ 43

Self-Boot ...................................................................................... 44

Multipurpose Pins .......................................................................... 45

Push-Button Volume Controls ................................................. 45

Limiter Compression Enable .................................................... 45

Parameter Bank Switching ........................................................ 45

Mute ............................................................................................. 45

DSP Bypass Mode ...................................................................... 46

Serial Data Input/Output Ports .................................................... 47

Tristating Unused Channels...................................................... 47

Applications Information .............................................................. 50

Power Supply Bypass Capacitors.............................................. 50

Layout .......................................................................................... 50

Grounding ................................................................................... 50

Exposed Pad PCB Design ......................................................... 50

Clock Control Register .............................................................. 53

PLL Denominator MSB Register.............................................. 54

PLL Denominator LSB Register ............................................... 54

PLL Numerator MSB Register .................................................. 54

PLL Numerator LSB Register.................................................... 55

PLL Integer Setting Register ..................................................... 55

PLL Lock Flag Register .............................................................. 56

CLKOUT Setting Selection Register........................................ 56

Regulator Control Register ....................................................... 57

Core Control Register................................................................ 58

Filter Engine and Limiter Control Register ............................ 59

DB Value Register 0 Read.......................................................... 60

DB Value Register 1 Read.......................................................... 60

DB Value Register 2 Read.......................................................... 61

Core Channel 0/Core Channel 1 Input Select Register......... 62

Core Channel 2/Core Channel 3 Input Select Register......... 63

DAC Input Select Register ........................................................ 64

PDM Modulator Input Select Register .................................... 65

Serial Data Output 0/Serial Data Output 1 Input Select

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