WM8983

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PP Rev 1.1 August 2005

2

TABLE OF CONTENTS

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

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

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

TABLE OF CONTENTS .........................................................................................2

PIN CONFIGURATION...........................................................................................3

ORDERING INFORMATION ..................................................................................3

PIN DESCRIPTION ................................................................................................4

ABSOLUTE MAXIMUM RATINGS .........................................................................5

RECOMMENDED OPERATING CONDITIONS .....................................................5

ELECTRICAL CHARACTERISTICS ......................................................................6

TERMINOLOGY ............................................................................................................ 9

SPEAKER OUTPUT THD VERSUS POWER ......................................................10

POWER CONSUMPTION ....................................................................................11

TYPICAL SCENARIOS................................................................................................ 11

AUDIO PATHS OVERVIEW .................................................................................12

SIGNAL TIMING REQUIREMENTS .....................................................................13

SYSTEM CLOCK TIMING ........................................................................................... 13

AUDIO INTERFACE TIMING – MASTER MODE ........................................................ 13

AUDIO INTERFACE TIMING – SLAVE MODE............................................................ 14

CONTROL INTERFACE TIMING – 3-WIRE MODE .................................................... 15

CONTROL INTERFACE TIMING – 2-WIRE MODE .................................................... 16

INTERNAL POWER ON RESET CIRCUIT ..........................................................17

DEVICE DESCRIPTION .......................................................................................19

INTRODUCTION ......................................................................................................... 19

INPUT SIGNAL PATH ................................................................................................. 21

ANALOGUE TO DIGITAL CONVERTER (ADC).......................................................... 29

INPUT LIMITER / AUTOMATIC LEVEL CONTROL (ALC) .......................................... 33

OUTPUT SIGNAL PATH ............................................................................................. 38

3D STEREO ENHANCEMENT .................................................................................... 45

ANALOGUE OUTPUTS............................................................................................... 45

DIGITAL AUDIO INTERFACES................................................................................... 62

AUDIO SAMPLE RATES ............................................................................................. 69

MASTER CLOCK AND PHASE LOCKED LOOP (PLL) ............................................... 69

GENERAL PURPOSE INPUT/OUTPUT...................................................................... 72

OUTPUT SWITCHING (JACK DETECT)..................................................................... 72

CONTROL INTERFACE.............................................................................................. 74

RESETTING THE CHIP .............................................................................................. 75

POWER SUPPLIES .................................................................................................... 75

POWER MANAGEMENT ............................................................................................ 75

REGISTER MAP...................................................................................................77

DIGITAL FILTER CHARACTERISTICS ...............................................................79

TERMINOLOGY .......................................................................................................... 79

DAC FILTER RESPONSES......................................................................................... 80

ADC FILTER RESPONSES......................................................................................... 80

HIGHPASS FILTER..................................................................................................... 81

5-BAND EQUALISER .................................................................................................. 82

APPLICATIONS INFORMATION .........................................................................86

RECOMMENDED EXTERNAL COMPONENTS .......................................................... 86

IMPORTANT NOTICE ..........................................................................................88