WM8962B datasheet(3/295 Pages) WOLFSON

3 / 295 page

WM8962

Rev 4.3

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

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