WM8776 datasheet(2/57 Pages) WOLFSON

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WM8776

Production Data

PD Rev 4.0 April 2005

TABLE OF CONTENTS

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

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

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

BLOCK DIAGRAM .................................................................................................1

TABLE OF CONTENTS .........................................................................................2

PIN CONFIGURATION...........................................................................................3

ORDERING INFORMATION ..................................................................................3

PIN DESCRIPTION ................................................................................................4

ABSOLUTE MAXIMUM RATINGS .........................................................................5

ELECTRICAL CHARACTERISTICS ......................................................................6

TERMINOLOGY ............................................................................................................ 7

MASTER CLOCK TIMING......................................................................................9

DIGITAL AUDIO INTERFACE – MASTER MODE ....................................................... 10

DIGITAL AUDIO INTERFACE – SLAVE MODE .......................................................... 11

3-WIRE MPU INTERFACE TIMING ............................................................................ 12

CONTROL INTERFACE TIMING – 2-WIRE MODE .................................................... 13

INTERNAL POWER ON RESET CIRCUIT ..........................................................14

DEVICE DESCRIPTION .......................................................................................16

INTRODUCTION ......................................................................................................... 16

AUDIO DATA SAMPLING RATES............................................................................... 17

ZERO DETECT ........................................................................................................... 18

POWERDOWN MODES ............................................................................................. 18

DIGITAL AUDIO INTERFACE..............................................................................19

CONTROL INTERFACE OPERATION ........................................................................ 23

CONTROL INTERFACE REGISTERS ........................................................................ 25

LIMITER / AUTOMATIC LEVEL CONTROL (ALC) ...................................................... 34

REGISTER MAP ......................................................................................................... 41

DIGITAL FILTER CHARACTERISTICS ...............................................................49

DAC FILTER RESPONSES......................................................................................... 49

ADC FILTER RESPONSES......................................................................................... 50

ADC HIGH PASS FILTER ........................................................................................... 51

DIGITAL DE-EMPHASIS CHARACTERISTICS........................................................... 52

APPLICATIONS INFORMATION .........................................................................53

EXTERNAL CIRCUIT CONFIGURATION ................................................................... 53

RECOMMENDED EXTERNAL COMPONENTS ..................................................54

PACKAGE DIMENSIONS ....................................................................................56

ADDRESS: .................................................................................................................. 57

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