WM8962 Datasheet, PDF (3/295 Pages) Wolfson Microelectronics plc – Ultra-Low Power Stereo CODEC with Audio Enhancement DSP, 1W Stereo Class D Speaker Drivers and Ground Referenced Headphone Drivers

WM8962
TABLE OF CONTENTS
DESCRIPTION....................................................................................................... 1
FEATURES ............................................................................................................ 1
APPLICATIONS .................................................................................................... 1
BLOCK DIAGRAM ................................................................................................ 2
TABLE OF CONTENTS......................................................................................... 3
PIN CONFIGURATION .......................................................................................... 7
ORDERING INFORMATION.................................................................................. 7
PIN DESCRIPTION................................................................................................ 8
ABSOLUTE MAXIMUM RATINGS ........................................................................ 9
RECOMMENDED OPERATING CONDITIONS..................................................... 9
ELECTRICAL CHARACTERISTICS ................................................................... 10
TERMINOLOGY ........................................................................................................... 20
TYPICAL PERFORMANCE ................................................................................. 21
TYPICAL POWER CONSUMPTION ............................................................................ 21
SIGNAL TIMING REQUIREMENTS .................................................................... 25
MASTER CLOCK ......................................................................................................... 25
AUDIO INTERFACE TIMING ....................................................................................... 26
DIGITAL MICROPHONE (DMIC) INTERFACE TIMING ............................................................................ 26
DIGITAL AUDIO INTERFACE - MASTER MODE ..................................................................................... 27
DIGITAL AUDIO INTERFACE - SLAVE MODE ......................................................................................... 28
DIGITAL AUDIO INTERFACE - TDM MODE.............................................................................................29
CONTROL INTERFACE TIMING ................................................................................. 30
2-WIRE (I2C) CONTROL MODE ...............................................................................................................30
3-WIRE (SPI) CONTROL MODE ...............................................................................................................31
4-WIRE (SPI) CONTROL MODE ...............................................................................................................32
POWER ON RESET TIMING ....................................................................................... 33
DEVICE DESCRIPTION ...................................................................................... 36
INTRODUCTION .......................................................................................................... 36
INPUT SIGNAL PATH .................................................................................................. 37
MICROPHONE INPUT CONNECTION ..................................................................................................... 38
LINE INPUT CONNECTION ...................................................................................................................... 38
MICROPHONE BIAS CONTROL .............................................................................................................. 39
MICBIAS CURRENT DETECT .................................................................................................................. 39
MICBIAS CURRENT DETECT FILTERING...............................................................................................40
MICROPHONE HOOK SWITCH DETECTION ..........................................................................................42
MULTIPLE PUSH BUTTON DETECTION ................................................................................................. 43
INPUT PGA ENABLE ................................................................................................................................ 44
INPUT PGA CONFIGURATION ................................................................................................................ 45
INPUT PGA VOLUME CONTROL ............................................................................................................. 46
INPUT MIXER ENABLE.............................................................................................................................47
INPUT MIXER CONFIGURATION AND VOLUME CONTROL..................................................................48
AUTOMATIC LEVEL CONTROL (ALC)........................................................................ 50
LIMITER MODE ......................................................................................................................................... 52
ALC GAIN CONTROL................................................................................................................................ 54
ALC DYNAMIC CHARACTERISTICS........................................................................................................ 55
PEAK LIMITER .......................................................................................................................................... 57
ALC NOISE GATE ..................................................................................................................................... 58
ALC STATUS READBACK ........................................................................................................................ 62
DIGITAL MICROPHONE INTERFACE ......................................................................... 63
ANALOGUE TO DIGITAL CONVERTER (ADC) ........................................................... 66
ADC CLOCKING CONTROL ..................................................................................................................... 66
Rev 4.3
3