CS47L85 datasheet(6/370 Pages) CIRRUS

6 / 370 page

CS47L85

Rev 4.3

SEQUENCER STATUS AND READBACK.................................................................................................................................................................. 332

PROGRAMMING A SEQUENCE................................................................................................................................................................................. 333

SEQUENCER MEMORY DEFINITION........................................................................................................................................................................ 334

CHARGE PUMPS, REGULATORS AND VOLTAGE REFERENCE

.............................................................335

CHARGE PUMPS AND LDO2 REGULATOR ............................................................................................................................................................. 335

MICROPHONE BIAS (MICBIAS) CONTROL .............................................................................................................................................................. 335

VOLTAGE REFERENCE CIRCUIT ............................................................................................................................................................................. 336

LDO1 REGULATOR AND DCVDD SUPPLY............................................................................................................................................................... 336

BLOCK DIAGRAM AND CONTROL REGISTERS ...................................................................................................................................................... 337

JTAG INTERFACE

.........................................................................................................................................341

THERMAL SHUTDOWN AND SHORT CIRCUIT PROTECTION

.................................................................341

POWER-ON RESET (POR)

...........................................................................................................................343

HARDWARE RESET, SOFTWARE RESET, WAKE-UP, AND DEVICE ID

...................................................346

............................................................................................................................... 348

APPLICATIONS INFORMATION

..................................................................................................... 349

RECOMMENDED EXTERNAL COMPONENTS

...........................................................................................349

ANALOGUE INPUT PATHS ........................................................................................................................................................................................ 349

DIGITAL MICROPHONE INPUT PATHS .................................................................................................................................................................... 349

MICROPHONE BIAS CIRCUIT ................................................................................................................................................................................... 350

HEADPHONE DRIVER OUTPUT PATH ..................................................................................................................................................................... 351

SPEAKER DRIVER OUTPUT PATH ........................................................................................................................................................................... 353

POWER SUPPLY / REFERENCE DECOUPLING ...................................................................................................................................................... 355

CHARGE PUMP COMPONENTS ............................................................................................................................................................................... 356

EXTERNAL ACCESSORY DETECTION COMPONENTS .......................................................................................................................................... 356

RECOMMENDED EXTERNAL COMPONENTS DIAGRAM ....................................................................................................................................... 358

RESETS SUMMARY

.....................................................................................................................................359

OUTPUT SIGNAL DRIVE STRENGTH CONTROL

.......................................................................................360

DIGITAL AUDIO INTERFACE CLOCKING CONFIGURATIONS

..................................................................364

PCB LAYOUT CONSIDERATIONS

...............................................................................................................367

PACKAGE DIMENSIONS

................................................................................................................ 368

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