WM8785

Production Data

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PD Rev 4.1 December 2006

2

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

RECOMMENDED OPERATING CONDITIONS .....................................................5

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

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

SIGNAL TIMING REQUIREMENTS .......................................................................8

SYSTEM CLOCK TIMING ............................................................................................. 8

AUDIO INTERFACE TIMING – MASTER MODE, PCM DATA ...................................... 8

AUDIO INTERFACE TIMING – SLAVE MODE, PCM DATA ......................................... 9

CONTROL INTERFACE TIMING – 3-WIRE MODE ...................................................... 9

CONTROL INTERFACE TIMING – 2-WIRE MODE .................................................... 10

POWER-ON RESET ................................................................................................... 11

DIGITAL FILTER CHARACTERISTICS ...............................................................12

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

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

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

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

DIGITAL AUDIO INTERFACE ..................................................................................... 16

DIGITAL HIGH PASS .................................................................................................. 20

DATA OUT PIN DISABLE ........................................................................................... 21

CONTROL INTERFACE.............................................................................................. 21

TIME DIVISION MULTIPLEXED DATA OUT............................................................... 22

TDM SELECTION ....................................................................................................... 23

OVERSAMPLING RATIOS AND SIGMA-DELTA MODULATOR FREQUENCY.......... 26

MASTER CLOCK AND AUDIO SAMPLE RATES........................................................ 26

MLCK AND LRCLK PHASE RELATIONSHIP.............................................................. 27

POWER DOWN CONTROL ........................................................................................ 27

REGISTER MAP ......................................................................................................... 28

APPLICATIONS INFORMATION .........................................................................29

RECOMMENDED EXTERNAL COMPONENTS .......................................................... 29

PACKAGE DIMENSIONS ....................................................................................30

IMPORTANT NOTICE ..........................................................................................31

ADDRESS: .................................................................................................................. 31