WM8522

Pre-Production

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PP Rev 3.1 May 2006

2

TABLE OF CONTENTS

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

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

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

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

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

PIN CONFIGURATION 28 LEAD SSOP ...............................................................3

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

PIN DESCRIPTION – 28 LEAD SSOP...................................................................4

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

RECOMMENDED OPERATING CONDITIONS .....................................................6

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

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

MASTER CLOCK TIMING ............................................................................................. 7

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

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

MPU INTERFACE TIMING .......................................................................................... 10

INTERNAL POWER ON RESET CIRCUIT ..........................................................11

DEVICE DESCRIPTION .......................................................................................12

INTRODUCTION ......................................................................................................... 12

AUDIO DATA SAMPLING RATES............................................................................... 12

HARDWARE CONTROL MODES ............................................................................... 13

DIGITAL AUDIO INTERFACE ..................................................................................... 15

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

SOFTWARE CONTROL INTERFACE OPERATION................................................... 19

CONTROL INTERFACE REGISTERS ........................................................................ 19

REGISTER MAP...................................................................................................30

REGISTER MAP DESCRIPTION .........................................................................31

DIGITAL FILTER CHARACTERISTICS ...............................................................34

DAC FILTER RESPONSES .................................................................................34

DIGITAL DE-EMPHASIS CHARACTERISTICS........................................................... 35

APPLICATIONS INFORMATION .........................................................................36

RECOMMENDED EXTERNAL COMPONENTS .......................................................... 36

SUGGESTED ANALOGUE LOW PASS POST DAC FILTERS ................................... 37

PACKAGE DIMENSIONS ....................................................................................38

IMPORTANT NOTICE ..........................................................................................39

ADDRESS: .................................................................................................................. 39