WM8281ECSSLASHR datasheet(4/392 Pages) CIRRUS

4 / 392 page

WM8281

Rev 4.0

5-BAND PARAMETRIC EQUALISER (EQ) ...................................................................................................................................72

DYNAMIC RANGE CONTROL (DRC)...........................................................................................................................................76

LOW PASS / HIGH PASS DIGITAL FILTER (LHPF) ....................................................................................................................89

DIGITAL CORE DSP .....................................................................................................................................................................92

TONE GENERATOR .....................................................................................................................................................................94

NOISE GENERATOR ....................................................................................................................................................................96

HAPTIC SIGNAL GENERATOR....................................................................................................................................................96

PWM GENERATOR ....................................................................................................................................................................100

SAMPLE RATE CONTROL .........................................................................................................................................................102

ASYNCHRONOUS SAMPLE RATE CONVERTER (ASRC) .......................................................................................................112

ISOCHRONOUS SAMPLE RATE CONVERTER (ISRC) ............................................................................................................115

DSP FIRMWARE CONTROL .................................................................................................122

DSP FIRMWARE MEMORY CONTROL .....................................................................................................................................122

DSP FIRMWARE EXECUTION ...................................................................................................................................................129

DSP DIRECT MEMORY ACCESS (DMA) CONTROL ................................................................................................................131

DSP DEBUG SUPPORT .............................................................................................................................................................137

AMBIENT NOISE CANCELLATION.......................................................................................140

DIGITAL AUDIO INTERFACE................................................................................................141

MASTER AND SLAVE MODE OPERATION...............................................................................................................................142

AUDIO DATA FORMATS ............................................................................................................................................................142

AIF TIMESLOT CONFIGURATION .............................................................................................................................................144

TDM OPERATION BETWEEN THREE OR MORE DEVICES ....................................................................................................146

DIGITAL AUDIO INTERFACE CONTROL .............................................................................148

AIF SAMPLE RATE CONTROL ..................................................................................................................................................148

AIF MASTER / SLAVE CONTROL ..............................................................................................................................................148

AIF SIGNAL PATH ENABLE .......................................................................................................................................................152

AIF BCLK AND LRCLK CONTROL .............................................................................................................................................155

AIF DIGITAL AUDIO DATA CONTROL.......................................................................................................................................159

AIF TDM AND TRI-STATE CONTROL........................................................................................................................................162

AIF DIGITAL PULL-UP AND PULL-DOWN.................................................................................................................................163

SLIMBUS INTERFACE ..........................................................................................................166

SLIMBUS DEVICES ....................................................................................................................................................................166

SLIMBUS FRAME STRUCTURE ................................................................................................................................................166

CONTROL SPACE ......................................................................................................................................................................166

DATA SPACE ..............................................................................................................................................................................167

SLIMBUS CONTROL SEQUENCES .....................................................................................168

DEVICE MANAGEMENT & CONFIGURATION ..........................................................................................................................168

INFORMATION MANAGEMENT .................................................................................................................................................168

VALUE MANAGEMENT (INCLUDING REGISTER ACCESS) ....................................................................................................169

FRAME & CLOCKING MANAGEMENT ......................................................................................................................................169

DATA CHANNEL CONFIGURATION ..........................................................................................................................................170

SLIMBUS INTERFACE CONTROL........................................................................................171

SLIMBUS DEVICE PARAMETERS .............................................................................................................................................171

SLIMBUS MESSAGE SUPPORT ................................................................................................................................................171

SLIMBUS PORT NUMBER CONTROL .......................................................................................................................................174

SLIMBUS SAMPLE RATE CONTROL ........................................................................................................................................174

SLIMBUS SIGNAL PATH ENABLE .............................................................................................................................................175

SLIMBUS CONTROL REGISTER ACCESS ...............................................................................................................................176

SLIMBUS CLOCKING CONTROL...............................................................................................................................................178

OUTPUT SIGNAL PATH ........................................................................................................180

OUTPUT SIGNAL PATH ENABLE ..............................................................................................................................................182

OUTPUT SIGNAL PATH SAMPLE RATE CONTROL ................................................................................................................184

OUTPUT SIGNAL PATH CONTROL...........................................................................................................................................184

OUTPUT SIGNAL PATH DIGITAL VOLUME CONTROL ...........................................................................................................186

OUTPUT SIGNAL PATH DIGITAL VOLUME LIMIT ....................................................................................................................192

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