ADAU1461WBCPZ-R7 datasheet(2/88 Pages) AD

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ADAU1461

Rev. 0 | Page 2 of 88

TABLE OF CONTENTS

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

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

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

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

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

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

Analog Performance Specifications, TA = 25°C ....................... 3

Analog Performance Specifications, −40°C < TA < +105°C ... 5

Power Supply Specifications........................................................ 7

Digital Filters................................................................................. 8

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

Digital Timing Specifications ..................................................... 9

Digital Timing Diagrams........................................................... 10

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

Thermal Resistance .................................................................... 12

ESD Caution................................................................................ 12

Pin Configuration and Function Descriptions........................... 13

Typical Performance Characteristics ........................................... 15

System Block Diagrams ................................................................. 18

Theory of Operation ...................................................................... 21

Startup, Initialization, and Power ................................................. 22

Power-Up Sequence ................................................................... 22

Power Reduction Modes............................................................ 22

Digital Power Supply.................................................................. 22

Input/Output Power Supply...................................................... 22

Clock Generation and Management........................................ 22

Clocking and Sampling Rates ....................................................... 24

Core Clock................................................................................... 24

Sampling Rates............................................................................ 25

PLL ............................................................................................... 25

Record Signal Path.......................................................................... 27

Input Signal Paths....................................................................... 27

Analog-to-Digital Converters................................................... 29

Automatic Level Control (ALC) ................................................... 30

ALC Parameters.......................................................................... 30

Noise Gate Function .................................................................. 31

Playback Signal Path ...................................................................... 33

Output Signal Paths ................................................................... 33

Headphone Output .................................................................... 34

Pop-and-Click Suppression ...................................................... 35

Line Outputs ............................................................................... 35

Control Ports................................................................................... 36

Burst Mode Writing and Reading ............................................ 36

I2C Port ........................................................................................ 36

SPI Port ........................................................................................ 39

Serial Data Input/Output Ports .................................................... 40

Applications Information .............................................................. 42

Power Supply Bypass Capacitors.............................................. 42

GSM Noise Filter ........................................................................ 42

Grounding ................................................................................... 42

Exposed Pad PCB Design ......................................................... 42

DSP Core ......................................................................................... 43

Signal Processing........................................................................ 43

Architecture ................................................................................ 43

Program Counter ....................................................................... 43

Features........................................................................................ 43

Startup.......................................................................................... 43

Numeric Formats ....................................................................... 44

Programming.............................................................................. 44

Program RAM, Parameter RAM, and Data RAM ..................... 45

Program RAM ............................................................................ 45

Parameter RAM.......................................................................... 45

Data RAM ................................................................................... 45

Read/Write Data Formats ......................................................... 45

Software Safeload ....................................................................... 46

Software Slew .............................................................................. 47

General-Purpose Input/Output.................................................... 48

GPIO Pins Set from the Control Port...................................... 48

Control Registers ............................................................................ 49

Control Register Details ............................................................ 50

Outline Dimensions ....................................................................... 88

Ordering Guide .......................................................................... 88

Automotive Products ................................................................. 88

REVISION HISTORY

6/10—Revision 0: Initial Version

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