WM8768

Production Data

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PD Rev 4.1 March 2005

2

TABLE OF CONTENTS

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

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

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

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

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

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

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

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

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

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

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

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

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

MPU INTERFACE TIMING ....................................................................................................11

INTERNAL POWER ON RESET CIRCUIT ...................................................................12

DEVICE DESCRIPTION ................................................................................................13

INTRODUCTION ...................................................................................................................13

PCM AUDIO DATA SAMPLING RATES................................................................................13

HARDWARE CONTROL MODES .........................................................................................14

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

POWERDOWN MODES .......................................................................................................19

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

CONTROL INTERFACE REGISTERS ..................................................................................20

REGISTER MAP............................................................................................................32

DIGITAL FILTER CHARACTERISTICS ........................................................................33

DAC FILTER RESPONSES ..........................................................................................33

DIGITAL DE-EMPHASIS CHARACTERISTICS.....................................................................34

APPLICATIONS INFORMATION ..................................................................................35

RECOMMENDED EXTERNAL COMPONENTS ....................................................................35

RECOMMENDED EXTERNAL COMPONENTS VALUES .....................................................35

SUGGESTED ANALOGUE LOW PASS POST DAC FILTERS .............................................36

PACKAGE DRAWING...................................................................................................37

IMPORTANT NOTICE ...................................................................................................38

ADDRESS: ............................................................................................................................38