WM8728

Production Data

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PD, Rev 4.6, August 2008

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

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

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

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

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

DIGITAL AUDIO INTERFACE ............................................................................................ 8

POWER SUPPLY TIMING ................................................................................................. 9

POWER ON RESET (POR) ............................................................................................... 9

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

MPU 2-WIRE INTERFACE TIMING ..................................................................................13

DEVICE DESCRIPTION............................................................................................14

INTRODUCTION ...............................................................................................................14

CLOCKING SCHEMES .....................................................................................................14

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

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

HARDWARE CONTROL MODES .....................................................................................18

SOFTWARE CONTROL INTERFACE...............................................................................20

REGISTER MAP ...............................................................................................................21

ATTENUATION CONTROL...............................................................................................22

DIGITAL FILTER CHARACTERISTICS.............................................................................25

DAC FILTER RESPONSES...............................................................................................25

DIGITAL DE-EMPHASIS CHARACTERISTICS........................................................26

APPLICATIONS INFORMATION ..............................................................................27

RECOMMENDED EXTERNAL COMPONENTS (PCM AUDIO).........................................27

RECOMMENDED EXTERNAL COMPONENTS VALUES .................................................27

RECOMMENDED ANALOGUE LOW PASS FILTER FOR PCM DATA FORMAT

(OPTIONAL)......................................................................................................................28

PACKAGE DIMENSIONS .........................................................................................29

IMPORTANT NOTICE ...............................................................................................30

ADDRESS: ........................................................................................................................30