WM8768
Production Data
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
PD Rev 4.1 March 2005
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
