WM1811A datasheet(5/328 Pages) WOLFSON

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Production Data

WM1811A

PD, November 2013, Rev 4.1

BCLK AND LRCLK CONTROL....................................................................................................................................................188

CONTROL INTERFACE CLOCKING ..........................................................................................................................................189

FREQUENCY LOCKED LOOP (FLL) ..........................................................................................................................................189

FREE-RUNNING FLL CLOCK.....................................................................................................................................................195

GPIO OUTPUTS FROM FLL .......................................................................................................................................................196

EXAMPLE FLL CALCULATION...................................................................................................................................................197

EXAMPLE FLL SETTINGS..........................................................................................................................................................198

SAMPLE RATE CONVERSION ............................................................................................. 199

SAMPLE RATE CONVERTER 1 (SRC1) ....................................................................................................................................199

SAMPLE RATE CONVERTER 2 (SRC2) ....................................................................................................................................199

SAMPLE RATE CONVERTER RESTRICTIONS ........................................................................................................................200

SAMPLE RATE CONVERTER CONFIGURATION ERROR INDICATION .................................................................................200

CONTROL INTERFACE......................................................................................................... 201

POP SUPPRESSION CONTROL .......................................................................................... 204

DISABLED LINE OUTPUT CONTROL........................................................................................................................................204

LINE OUTPUT DISCHARGE CONTROL ....................................................................................................................................205

VMID REFERENCE DISCHARGE CONTROL............................................................................................................................205

INPUT VMID CLAMPS ................................................................................................................................................................205

LDO REGULATORS .............................................................................................................. 206

REFERENCE VOLTAGES AND MASTER BIAS ................................................................... 208

POWER MANAGEMENT ....................................................................................................... 210

THERMAL SHUTDOWN ........................................................................................................ 214

POWER ON RESET............................................................................................................... 215

SOFTWARE RESET AND DEVICE ID................................................................................... 217

REGISTER MAP ......................................................................................................... 218

REGISTER BITS BY ADDRESS ............................................................................................ 229

APPLICATIONS INFORMATION ............................................................................... 310

RECOMMENDED EXTERNAL COMPONENTS .................................................................... 310

AUDIO INPUT PATHS.................................................................................................................................................................310

HEADPHONE OUTPUT PATH....................................................................................................................................................311

EARPIECE DRIVER OUTPUT PATH..........................................................................................................................................312

LINE OUTPUT PATHS ................................................................................................................................................................312

POWER SUPPLY DECOUPLING ...............................................................................................................................................313

CHARGE PUMP COMPONENTS ...............................................................................................................................................314

MICROPHONE BIAS CIRCUIT ...................................................................................................................................................314

EXTERNAL ACCESSORY DETECTION COMPONENTS..........................................................................................................316

CLASS D SPEAKER CONNECTIONS ........................................................................................................................................318

RECOMMENDED EXTERNAL COMPONENTS DIAGRAM .......................................................................................................319

DIGITAL AUDIO INTERFACE CLOCKING CONFIGURATIONS........................................... 321

PCB LAYOUT CONSIDERATIONS ....................................................................................... 324

CLASS D LOUDSPEAKER CONNECTION ................................................................................................................................324

PACKAGE DIMENSIONS........................................................................................... 325

IMPORTANT NOTICE ................................................................................................ 326

ADDRESS: ............................................................................................................................. 326

REVISION HISTORY .................................................................................................. 327

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