WM8741 View Datasheet(PDF) - Wolfson Microelectronics plc
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WM8741 Datasheet PDF : 63 Pages
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WM8741
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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
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PP Rev 1.3 October 2007
4
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