WM8983 datasheet(3/129 Pages) CIRRUS

3 / 129 page

WM8983

Rev 4.6

TABLE OF CONTENTS

DESCRIPTION................................................................................................................ 1

FEATURES..................................................................................................................... 1

APPLICATIONS ............................................................................................................. 1

BLOCK DIAGRAM ......................................................................................................... 2

TABLE OF CONTENTS.................................................................................................. 3

PIN CONFIGURATION ................................................................................................... 5

ORDERING INFORMATION........................................................................................... 5

PIN DESCRIPTION......................................................................................................... 6

ABSOLUTE MAXIMUM RATINGS ................................................................................. 7

RECOMMENDED OPERATING CONDITIONS.............................................................. 7

ELECTRICAL CHARACTERISTICS .............................................................................. 8

TERMINOLOGY.....................................................................................................................14

TYPICAL PERFORMANCE.......................................................................................... 15

SPEAKER OUTPUT THD VERSUS POWER.........................................................................15

TYPICAL POWER CONSUMPTION ......................................................................................17

AUDIO PATHS OVERVIEW ......................................................................................... 18

SIGNAL TIMING REQUIREMENTS ............................................................................. 19

SYSTEM CLOCK TIMING ......................................................................................................19

AUDIO INTERFACE TIMING

– MASTER MODE ...................................................................19

AUDIO INTERFACE TIMING

– SLAVE MODE.......................................................................20

CONTROL INTERFACE TIMING

– 3-WIRE MODE................................................................21

CONTROL INTERFACE TIMING

– 2-WIRE MODE................................................................22

INTERNAL POWER ON RESET CIRCUIT................................................................... 23

RECOMMENDED CONTROL SEQUENCES ............................................................... 25

POWER UP/DOWN SEQUENCE...........................................................................................25

LOUT1/ROUT1 ENABLE SEQUENCE ...................................................................................28

DEVICE DESCRIPTION ............................................................................................... 29

INTRODUCTION....................................................................................................................29

INPUT SIGNAL PATH ............................................................................................................31

ANALOGUE TO DIGITAL CONVERTER (ADC) .....................................................................40

INPUT LIMITER / AUTOMATIC LEVEL CONTROL (ALC) .....................................................44

OUTPUT SIGNAL PATH ........................................................................................................57

ANALOGUE OUTPUTS .........................................................................................................64

DIGITAL AUDIO INTERFACES..............................................................................................82

AUDIO SAMPLE RATES........................................................................................................87

MASTER CLOCK AND PHASE LOCKED LOOP (PLL)..........................................................87

COMPANDING.......................................................................................................................90

GENERAL PURPOSE INPUT/OUTPUT.................................................................................92

OUTPUT SWITCHING (JACK DETECT)................................................................................93

CONTROL INTERFACE.........................................................................................................94

RESETTING THE CHIP .........................................................................................................95

POWER SUPPLIES ...............................................................................................................95

POWER MANAGEMENT .......................................................................................................96

REGISTER MAP ........................................................................................................... 97

DIGITAL FILTER CHARACTERISTICS ..................................................................... 118

TERMINOLOGY...................................................................................................................118

DAC FILTER RESPONSES .................................................................................................119

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