Production Data

WM8523

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PD, Rev 4.1, August 2011

3

TABLE OF CONTENTS

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

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

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

BLOCK DIAGRAM ............................................................................................................. 2

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

PIN CONFIGURATION....................................................................................................... 4

ORDERING INFORMATION .............................................................................................. 4

PIN DESCRIPTION – 20-LEAD TSSOP ............................................................................ 5

PIN DESCRIPTION – 24-LEAD QFN ................................................................................. 6

ABSOLUTE MAXIMUM RATINGS..................................................................................... 8

RECOMMENDED OPERATING CONDITIONS ................................................................. 8

ELECTRICAL CHARACTERISTICS .................................................................................. 9

TERMINOLOGY ..........................................................................................................................9

POWER CONSUMPTION MEASUREMENTS ..........................................................................10

SIGNAL TIMING REQUIREMENTS ................................................................................. 11

SYSTEM CLOCK TIMING .........................................................................................................11

AUDIO INTERFACE TIMING – MASTER MODE ......................................................................11

AUDIO INTERFACE TIMING – SLAVE MODE..........................................................................12

CONTROL INTERFACE TIMING – I

CONTROL INTERFACE TIMING – SPI MODE .........................................................................14

POWER ON RESET CIRCUIT ..................................................................................................15

DEVICE DESCRIPTION................................................................................................... 17

INTRODUCTION .......................................................................................................................17

SOFTWARE CONTROL INTERFACE.......................................................................................17

DIGITAL AUDIO INTERFACE ...................................................................................................21

DIGITAL AUDIO INTERFACE CONTROL.................................................................................24

DIGITAL AUDIO DATA SAMPLING RATES..............................................................................26

DAC FEATURES.......................................................................................................................27

HARDWARE CONTROL INTERFACE ......................................................................................32

POWER DOMAINS ...................................................................................................................34

REGISTER MAP............................................................................................................... 35

REGISTER BITS BY ADDRESS ...............................................................................................36

DIGITAL FILTER CHARACTERISTICS ........................................................................... 40

DAC FILTER RESPONSES.......................................................................................................41

DIGITAL DE-EMPHASIS CHARACTERISTICS.........................................................................42

APPLICATIONS INFORMATION ..................................................................................... 43

RECOMMENDED EXTERNAL COMPONENTS – 20-LEAD TSSOP.........................................43

RECOMMENDED PCB LAYOUT – 20-LEAD TSSOP ...............................................................44

RECOMMENDED EXTERNAL COMPONENTS – 24-LEAD QFN .............................................45

RECOMMENDED PCB LAYOUT – 24-LEAD QFN....................................................................46

RECOMMENDED ANALOGUE LOW PASS FILTER ................................................................47

RELEVANT APPLICATION NOTES..........................................................................................47

PACKAGE DIMENSIONS – 20-LEAD TSSOP ................................................................ 48

PACKAGE DIMENSIONS – 24-LEAD QFN ..................................................................... 49

IMPORTANT NOTICE ...................................................................................................... 50

ADDRESS .................................................................................................................................50

REVISION HISTORY........................................................................................................ 51