WM8958 datasheet(3/377 Pages) WOLFSON

3 / 377 page

Pre-Production

WM8958

PP, August 2012, Rev 3.4

ANALOGUE TO DIGITAL CONVERTER (ADC) ............................................................ 59

ADC CLOCKING CONTROL ........................................................................................................................................... 60

DIGITAL CORE ARCHITECTURE ................................................................................. 61

DIGITAL MIXING............................................................................................................ 63

AUDIO INTERFACE 1 (AIF1) OUTPUT MIXING............................................................................................................. 64

DIGITAL SIDETONE MIXING.......................................................................................................................................... 65

DIGITAL SIDETONE VOLUME AND FILTER CONTROL............................................................................................... 65

DAC OUTPUT DIGITAL MIXING..................................................................................................................................... 67

AUDIO INTERFACE 2 (AIF2) DIGITAL MIXING ............................................................................................................. 68

ULTRASONIC (4FS) AIF OUTPUT MODE...................................................................................................................... 69

MULTIBAND COMPRESSOR (MBC) ............................................................................ 70

RMS LIMITER.................................................................................................................................................................. 71

MBC CLOCKING CONTROL........................................................................................................................................... 71

MBC CONTROL SEQUENCES....................................................................................................................................... 72

DYNAMIC RANGE CONTROL (DRC) ........................................................................... 75

DRC COMPRESSION / EXPANSION / LIMITING........................................................................................................... 76

GAIN LIMITS.................................................................................................................................................................... 78

DYNAMIC CHARACTERISTICS ..................................................................................................................................... 79

ANTI-CLIP CONTROL ..................................................................................................................................................... 79

QUICK RELEASE CONTROL ......................................................................................................................................... 79

SIGNAL ACTIVITY DETECT ........................................................................................................................................... 79

DRC REGISTER CONTROLS......................................................................................................................................... 80

RETUNETM MOBILE PARAMETRIC EQUALIZER (EQ) ................................................ 89

DEFAULT MODE (5-BAND PARAMETRIC EQ) ............................................................................................................. 90

RETUNE

TM MOBILE MODE............................................................................................................................................. 92

EQ FILTER CHARACTERISTICS ................................................................................................................................... 93

3D STEREO EXPANSION ............................................................................................. 94

DIGITAL VOLUME AND FILTER CONTROL................................................................. 95

AIF1 - OUTPUT PATH VOLUME CONTROL .................................................................................................................. 95

AIF1 - OUTPUT PATH HIGH PASS FILTER................................................................................................................... 97

AIF1 - INPUT PATH VOLUME CONTROL ...................................................................................................................... 99

AIF1 - INPUT PATH SOFT MUTE CONTROL .............................................................................................................. 102

AIF1 - INPUT PATH NOISE GATE CONTROL ............................................................................................................. 103

AIF1 - INPUT PATH MONO MIX CONTROL................................................................................................................. 104

AIF2 - OUTPUT PATH VOLUME CONTROL ................................................................................................................ 104

AIF2 - OUTPUT PATH HIGH PASS FILTER................................................................................................................. 105

AIF2 - INPUT PATH VOLUME CONTROL .................................................................................................................... 106

AIF2 - INPUT PATH SOFT MUTE CONTROL .............................................................................................................. 106

AIF2 - INPUT PATH NOISE GATE CONTROL ............................................................................................................. 107

AIF2 - INPUT PATH MONO MIX CONTROL................................................................................................................. 108

DIGITAL TO ANALOGUE CONVERTER (DAC) .......................................................... 109

DAC CLOCKING CONTROL ......................................................................................................................................... 109

DAC DIGITAL VOLUME ................................................................................................................................................ 111

DAC SOFT MUTE AND SOFT UN-MUTE..................................................................................................................... 114

ANALOGUE OUTPUT SIGNAL PATH ......................................................................... 116

OUTPUT SIGNAL PATHS ENABLE.............................................................................................................................. 117

HEADPHONE SIGNAL PATHS ENABLE...................................................................................................................... 119

OUTPUT MIXER CONTROL ......................................................................................................................................... 121

SPEAKER MIXER CONTROL ....................................................................................................................................... 125

OUTPUT SIGNAL PATH VOLUME CONTROL............................................................................................................. 128

SPEAKER BOOST MIXER ............................................................................................................................................ 133

EARPIECE DRIVER MIXER.......................................................................................................................................... 133

LINE OUTPUT MIXERS ................................................................................................................................................ 134

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