WM8772 datasheet(3/73 Pages) WOLFSON

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Production Data

WM8772

PD Rev 4.2 October 2005

TABLE OF CONTENTS

DESCRIPTION .......................................................................................................1

FEATURES.............................................................................................................1

APPLICATIONS .....................................................................................................1

BLOCK DIAGRAM - 28 LEAD SSOP ....................................................................1

BLOCK DIAGRAM – 32 LEAD TQFP ....................................................................2

TABLE OF CONTENTS .........................................................................................3

PIN CONFIGURATION - 28 LEAD SSOP .............................................................5

ORDERING INFORMATION ..................................................................................5

PIN CONFIGURATION 32 LEAD TQFP...............................................................6

ORDERING INFORMATION ..................................................................................6

PIN DESCRIPTION – 28 LEAD SSOP...................................................................7

PIN DESCRIPTION – 32 LEAD TQFP ...................................................................8

ABSOLUTE MAXIMUM RATINGS .........................................................................9

RECOMMENDED OPERATING CONDITIONS ...................................................10

ELECTRICAL CHARACTERISTICS ....................................................................10

TERMINOLOGY .......................................................................................................... 12

DIGITAL FILTER CHARACTERISTICS ...............................................................13

DAC FILTER RESPONSES......................................................................................... 13

ADC FILTER RESPONSES......................................................................................... 14

ADC HIGH PASS FILTER ........................................................................................... 14

DIGITAL DE-EMPHASIS CHARACTERISTICS........................................................... 14

WM8772EDS – 28 LEAD SSOP ..........................................................................16

MASTER CLOCK TIMING....................................................................................16

DIGITAL AUDIO INTERFACE – MASTER MODE ....................................................... 16

MPU INTERFACE TIMING .......................................................................................... 19

DEVICE DESCRIPTION .......................................................................................20

INTRODUCTION ......................................................................................................... 20

AUDIO DATA SAMPLING RATES............................................................................... 20

HARDWARE CONTROL MODES ............................................................................... 21

DIGITAL AUDIO INTERFACE ..................................................................................... 23

POWERDOWN MODES ............................................................................................. 28

ZERO DETECT ........................................................................................................... 28

SOFTWARE CONTROL INTERFACE OPERATION................................................... 29

CONTROL INTERFACE REGISTERS ........................................................................ 31

APPLICATIONS INFORMATION .........................................................................39

RECOMMENDED EXTERNAL COMPONENTS .......................................................... 39

SUGGESTED ANALOGUE LOW PASS POST DAC FILTERS ................................... 40

PACKAGE DIMENSIONS ....................................................................................42

WM8722EFT - 32 LEAD TQFP ............................................................................43

MASTER CLOCK TIMING....................................................................................43

DIGITAL AUDIO INTERFACE – MASTER MODE ....................................................... 43

MPU INTERFACE TIMING .......................................................................................... 46

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