WM8778SEDSSLASHR datasheet(2/50 Pages) WOLFSON

2 / 50 page

WM8778

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

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

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

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

MASTER CLOCK TIMING......................................................................................8

DIGITAL AUDIO INTERFACE – MASTER MODE ......................................................... 8

DIGITAL AUDIO INTERFACE – SLAVE MODE ............................................................ 9

3-WIRE MPU INTERFACE TIMING ............................................................................ 11

CONTROL INTERFACE TIMING – 2-WIRE MODE .................................................... 12

INTERNAL POWER ON RESET CIRCUIT ..........................................................13

DEVICE DESCRIPTION .......................................................................................15

INTRODUCTION ......................................................................................................... 15

AUDIO DATA SAMPLING RATES............................................................................... 15

ZERO DETECT ........................................................................................................... 17

POWERDOWN MODES ............................................................................................. 17

DIGITAL AUDIO INTERFACE ..................................................................................... 17

CONTROL INTERFACE OPERATION ........................................................................ 22

CONTROL INTERFACE REGISTERS ........................................................................ 24

LIMITER / AUTOMATIC LEVEL CONTROL (ALC) ...................................................... 32

REGISTER MAP ......................................................................................................... 38

DIGITAL FILTER CHARACTERISTICS ...............................................................45

DAC FILTER RESPONSES......................................................................................... 45

ADC FILTER RESPONSES......................................................................................... 46

ADC HIGH PASS FILTER ........................................................................................... 46

DIGITAL DE-EMPHASIS CHARACTERISTICS........................................................... 47

APPLICATIONS INFORMATION .........................................................................48

RECOMMENDED EXTERNAL COMPONENTS .......................................................... 48

PACKAGE DIMENSIONS ....................................................................................50

IMPORTANT NOTICE ..........................................................................................51

ADDRESS: .................................................................................................................. 51

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