WM8741 datasheet(4/63 Pages) WOLFSON

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WM8741

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PP Rev 1.3 October 2007

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

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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