WM8980 datasheet(2/81 Pages) WOLFSON

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WM8980

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PP Rev 1.6 January 2005

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

POWER CONSUMPTION ....................................................................................10

SIGNAL TIMING REQUIREMENTS .....................................................................11

SYSTEM CLOCK TIMING ........................................................................................... 11

AUDIO INTERFACE TIMING – MASTER MODE ........................................................ 11

AUDIO INTERFACE TIMING – SLAVE MODE............................................................ 12

CONTROL INTERFACE TIMING – 3-WIRE MODE .................................................... 13

CONTROL INTERFACE TIMING – 2-WIRE MODE .................................................... 14

DEVICE DESCRIPTION .......................................................................................15

INTRODUCTION ......................................................................................................... 15

INPUT SIGNAL PATH ................................................................................................. 17

ANALOGUE TO DIGITAL CONVERTER (ADC).......................................................... 23

INPUT LIMITER / AUTOMATIC LEVEL CONTROL (ALC) .......................................... 27

OUTPUT SIGNAL PATH ............................................................................................. 31

3D STEREO ENHANCEMENT .................................................................................... 37

ANALOGUE OUTPUTS............................................................................................... 38

VIDEO BUFFER .......................................................................................................... 53

DIGITAL AUDIO INTERFACES................................................................................... 54

AUDIO SAMPLE RATES ............................................................................................. 61

MASTER CLOCK AND PHASE LOCKED LOOP (PLL) ............................................... 61

GENERAL PURPOSE INPUT/OUTPUT...................................................................... 63

OUTPUT SWITCHING (JACK DETECT)..................................................................... 64

CONTROL INTERFACE.............................................................................................. 66

RESETTING THE CHIP .............................................................................................. 67

POWER SUPPLIES .................................................................................................... 67

POWER MANAGEMENT ............................................................................................ 68

DIGITAL FILTER CHARACTERISTICS ...............................................................72

TERMINOLOGY .......................................................................................................... 72

DAC FILTER RESPONSES......................................................................................... 73

ADC FILTER RESPONSES......................................................................................... 73

HIGHPASS FILTER..................................................................................................... 74

5-BAND EQUALISER .................................................................................................. 75

APPLICATION INFORMATION............................................................................79

RECOMMENDED EXTERNAL COMPONENTS .......................................................... 79

PACKAGE DIAGRAM ..........................................................................................80

IMPORTANT NOTICE ..........................................................................................81

ADDRESS: .................................................................................................................. 81

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