WM8770
Production Data
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.........................................................................6
ELECTRICAL CHARACTERISTICS ......................................................................7
TERMINOLOGY.....................................................................................................8
MASTER CLOCK TIMING............................................................................................. 9
DIGITAL AUDIO INTERFACE – MASTER MODE......................................................... 9
DIGITAL AUDIO INTERFACE – SLAVE MODE .......................................................... 11
MPU INTERFACE TIMING.......................................................................................... 12
INTERNAL POWER ON RESET CIRCUIT ..........................................................14
DEVICE DESCRIPTION.......................................................................................17
INTRODUCTION......................................................................................................... 17
AUDIO DATA SAMPLING RATES............................................................................... 18
ZERO DETECT ........................................................................................................... 19
POWERDOWN MODES ............................................................................................. 20
DIGITAL AUDIO INTERFACE..................................................................................... 20
CONTROL INTERFACE OPERATION........................................................................ 24
CONTROL INTERFACE REGISTERS ........................................................................ 26
REGISTER MAP...................................................................................................38
DIGITAL FILTER CHARACTERISTICS...............................................................45
DAC FILTER RESPONSES......................................................................................... 45
ADC FILTER RESPONSES......................................................................................... 46
ADC HIGH PASS FILTER ........................................................................................... 46
DIGITAL DE-EMPHASIS CHARACTERISTICS........................................................... 47
APPLICATIONS INFORMATION .........................................................................48
RECOMMENDED EXTERNAL COMPONENTS.......................................................... 48
EXTERNAL CIRCUIT CONFIGURATION ................................................................... 49
PACKAGE DIMENSIONS ....................................................................................51
IMPORTANT NOTICE..........................................................................................52
ADDRESS: .................................................................................................................. 52
PD Rev 4.1 June 2005
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
