WM8958 datasheet(4/377 Pages) WOLFSON

4 / 377 page

WM8958

Pre-Production

PP, August 2012, Rev 3.4

CHARGE PUMP........................................................................................................... 138

DC SERVO................................................................................................................... 140

DC SERVO ENABLE AND START-UP ......................................................................................................................... 140

DC SERVO ACTIVE MODES ........................................................................................................................................ 142

GPIO / INTERRUPT OUTPUTS FROM DC SERVO..................................................................................................... 143

ANALOGUE OUTPUTS ............................................................................................... 144

SPEAKER OUTPUT CONFIGURATIONS..................................................................................................................... 144

HEADPHONE OUTPUT CONFIGURATIONS............................................................................................................... 147

EARPIECE DRIVER OUTPUT CONFIGURATIONS..................................................................................................... 148

LINE OUTPUT CONFIGURATIONS.............................................................................................................................. 148

EXTERNAL ACCESSORY DETECTION ..................................................................... 151

ACCESSORY DETECTION WITH LOW FREQUENCY SYSCLK................................................................................. 155

GENERAL PURPOSE INPUT/OUTPUT ...................................................................... 156

GPIO CONTROL ........................................................................................................................................................... 156

GPIO FUNCTION SELECT ........................................................................................................................................... 157

BUTTON DETECT (GPIO INPUT)................................................................................................................................. 159

LOGIC ‘1’ AND LOGIC ‘0’ OUTPUT (GPIO OUTPUT) .................................................................................................. 159

INTERRUPT (IRQ) STATUS OUTPUT.......................................................................................................................... 159

OVER-TEMPERATURE DETECTION........................................................................................................................... 159

MICROPHONE ACCESSORY STATUS DETECTION.................................................................................................. 160

FREQUENCY LOCKED LOOP (FLL) LOCK STATUS OUTPUT .................................................................................. 160

SAMPLE RATE CONVERTER (SRC) LOCK STATUS OUTPUT ................................................................................. 160

DYNAMIC RANGE CONTROL (DRC) SIGNAL ACTIVITY DETECTION...................................................................... 161

CONTROL WRITE SEQUENCER STATUS DETECTION ............................................................................................ 163

DIGITAL CORE FIFO ERROR STATUS DETECTION.................................................................................................. 163

OPCLK CLOCK OUTPUT.............................................................................................................................................. 163

FLL CLOCK OUTPUT.................................................................................................................................................... 164

INTERRUPTS .............................................................................................................. 165

DIGITAL AUDIO INTERFACE...................................................................................... 170

MASTER AND SLAVE MODE OPERATION................................................................................................................. 171

OPERATION WITH TDM............................................................................................................................................... 171

AUDIO DATA FORMATS (NORMAL MODE)................................................................................................................ 172

AUDIO DATA FORMATS (TDM MODE) ....................................................................................................................... 175

DIGITAL AUDIO INTERFACE CONTROL ................................................................... 178

AIF1 - MASTER / SLAVE AND TRI-STATE CONTROL................................................................................................ 178

AIF1 - SIGNAL PATH ENABLE ..................................................................................................................................... 179

AIF1 - BCLK AND LRCLK CONTROL ........................................................................................................................... 179

AIF1 - DIGITAL AUDIO DATA CONTROL..................................................................................................................... 182

AIF1 - MONO MODE ..................................................................................................................................................... 183

AIF1 - COMPANDING ................................................................................................................................................... 184

AIF1 - LOOPBACK ........................................................................................................................................................ 186

AIF1 - DIGITAL PULL-UP AND PULL-DOWN............................................................................................................... 186

AIF2 - MASTER / SLAVE AND TRI-STATE CONTROL................................................................................................ 187

AIF2 - SIGNAL PATH ENABLE ..................................................................................................................................... 188

AIF2 - BCLK AND LRCLK CONTROL ........................................................................................................................... 188

AIF2 - DIGITAL AUDIO DATA CONTROL..................................................................................................................... 191

AIF2 - MONO MODE ..................................................................................................................................................... 193

AIF2 - COMPANDING ................................................................................................................................................... 193

AIF2 - LOOPBACK ........................................................................................................................................................ 193

AIF2 - DIGITAL PULL-UP AND PULL-DOWN............................................................................................................... 194

AIF3 - SIGNAL PATH CONFIGURATION AND TRI-STATE CONTROL....................................................................... 195

AIF3 - BCLK AND LRCLK CONTROL ........................................................................................................................... 197

AIF3 - DIGITAL AUDIO DATA CONTROL..................................................................................................................... 198

AIF3 - COMPANDING ................................................................................................................................................... 199

AIF3 - LOOPBACK ........................................................................................................................................................ 199

WM8958 Datasheet(PDF) 4 Page - Wolfson Microelectronics plc

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