WM8741
Product Preview
BCLK / DSDCLK64 POLARITY .....................................................................................................................................30
OVERSAMPLING RATE CONTROL...................................................................................................................................30
MCLK/LRCLK RATIO CONTROL (NORMAL PCM MODE).................................................................................................31
8FS MODE ..................................................................................................................................................................31
MCLK/LRCLK RATIO CONTROL (8FS MODE)................................................................................................................31
ATTENUATION CONTROL...............................................................................................................................................31
DAC OUTPUT ATTENUATION.........................................................................................................................................32
ATTENUATION CONTROL MODE.....................................................................................................................................32
VOLUME RAMP MODE...................................................................................................................................................33
ANTI-CLIPPING DIGITAL ATTENUATION MODE..................................................................................................................33
DSD PLUS GAIN CONTROL...........................................................................................................................................33
MUTE MODES ..............................................................................................................................................................34
ZERO FLAG OUTPUT ....................................................................................................................................................35
ZFLAG FORCE HIGH CONTROL ....................................................................................................................................35
INFINITE ZERO DETECT.................................................................................................................................................35
DE-EMPHASIS ..............................................................................................................................................................36
OUTPUT PHASE REVERSAL...........................................................................................................................................36
DIFFERENTIAL MONO MODE..........................................................................................................................................37
DITHER .......................................................................................................................................................................37
NORMAL PCM MODE DIGITAL FILTER SELECTION...........................................................................................................38
8FS MODE DIGITAL FILTER...........................................................................................................................................38
DSD PLUS FILTER SELECTION......................................................................................................................................38
DSD DIRECT DIGITAL FILTER........................................................................................................................................38
DSD MUTE CONTROL ..................................................................................................................................................39
POWER SAVING STANDBY CONTROL .............................................................................................................................39
HARDWARE CONTROL MODE.................................................................................. 39
DSD AND PCM MODE SWITCHING...............................................................................................................................39
AUDIO INPUT FORMAT ..................................................................................................................................................39
OVERSAMPLING RATE CONTROL ...................................................................................................................................40
MUTE PIN....................................................................................................................................................................40
ZERO FLAG...............................................................................................................................................................41
DE-EMPHASIS CONTROL AND ANTI-CLIPPING MODE ........................................................................................................41
DIGITAL FILTER SELECTION...........................................................................................................................................42
DIFFERENTIAL MONO MODE..........................................................................................................................................42
OVERVIEW OF FUNCTIONS...............................................................................43
REGISTER MAP...................................................................................................44
REGISTER MAP...................................................................................................44
DIGITAL FILTER CHARACTERISTICS...............................................................49
PCM MODE FILTER CHARACTERISTICS ................................................................. 49
8FS MODE FILTER CHARACTERISTICS................................................................... 51
DSD PLUS MODE FILTER CHARACTERISTICS ....................................................... 52
DSD DIRECT MODE FILTER CHARACTERISTICS ................................................... 52
PCM MODE FILTER RESPONSES............................................................................. 53
8FS MODE FILTER RESPONSES.............................................................................. 58
DSD PLUS MODE FILTER RESPONSES................................................................... 58
DSD DIRECT MODE FILTER RESPONSES............................................................... 59
DEEMPHASIS FILTER RESPONSES......................................................................... 60
APPLICATIONS INFORMATION .........................................................................61
PACKAGE DIMENSIONS ....................................................................................62
IMPORTANT NOTICE..........................................................................................63
ADDRESS: .................................................................................................................. 63
PP Rev 1.3 October 2007
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
