WM8959
Pre-Production
TABLE OF CONTENTS
DESCRIPTION ................................................................................................................. 1
FEATURES ...................................................................................................................... 1
APPLICATIONS ............................................................................................................... 1
TABLE OF CONTENTS ................................................................................................... 2
BLOCK DIAGRAM........................................................................................................... 3
PIN CONFIGURATION..................................................................................................... 4
ORDERING INFORMATION ............................................................................................ 4
PIN DESCRIPTION .......................................................................................................... 5
ABSOLUTE MAXIMUM RATINGS ................................................................................... 7
RECOMMENDED OPERATING CONDITIONS................................................................ 7
THERMAL PERFORMANCE............................................................................................ 8
SPEAKER POWER DE-RATING CURVE ........................................................................ 9
ELECTRICAL CHARACTERISTICS............................................................................... 11
TERMINOLOGY............................................................................................................. 20
TYPICAL POWER CONSUMPTION............................................................................... 21
SPEAKER DRIVER PERFORMANCE............................................................................ 22
HEADPHONE DRIVER PERFORMANCE...................................................................... 22
PSRR PERFORMANCE................................................................................................. 23
AUDIO SIGNAL PATHS................................................................................................. 25
SIGNAL TIMING REQUIREMENTS ............................................................................... 26
SYSTEM CLOCK TIMING.............................................................................................................26
AUDIO INTERFACE TIMING – MASTER MODE .........................................................................27
AUDIO INTERFACE TIMING – SLAVE MODE.............................................................................28
CONTROL INTERFACE TIMING – 2-WIRE MODE .....................................................................29
CONTROL INTERFACE TIMING – 3-WIRE MODE .....................................................................30
CONTROL INTERFACE TIMING – 4-WIRE MODE .....................................................................31
INTERNAL POWER ON RESET CIRCUIT..................................................................... 32
DEVICE DESCRIPTION................................................................................................. 34
INTRODUCTION...........................................................................................................................34
ANALOGUE INPUT PATH ............................................................................................................35
DIGITAL INPUT PATH ..................................................................................................................50
DIGITAL TO ANALOGUE CONVERTER (DAC)...........................................................................52
OUTPUT SIGNAL PATH...............................................................................................................56
ANALOGUE OUTPUTS.................................................................................................................67
THERMAL SHUTDOWN ...............................................................................................................71
GENERAL PURPOSE INPUT/OUTPUT .......................................................................................72
DIGITAL AUDIO INTERFACE.......................................................................................................89
DIGITAL AUDIO INTERFACE CONTROL ..................................................................................100
CLOCKING AND SAMPLE RATES.............................................................................................104
CONTROL INTERFACE..............................................................................................................112
POWER MANAGEMENT ............................................................................................................116
POP SUPPRESSION CONTROL................................................................................................119
POWER DOMAINS .....................................................................................................................124
REGISTER MAP........................................................................................................... 125
REGISTER BITS BY ADDRESS .................................................................................................127
DIGITAL FILTER CHARACTERISTICS........................................................................ 148
DAC FILTER RESPONSES ........................................................................................................149
DE-EMPHASIS FILTER RESPONSES .......................................................................................150
APPLICATIONS INFORMATION ................................................................................. 151
RECOMMENDED EXTERNAL COMPONENTS........................................................... 153
PACKAGE DIMENSIONS............................................................................................. 154
IMPORTANT NOTICE .................................................................................................. 155
ADDRESS....................................................................................................................................155
PP, May 2008, Rev 3.1
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
