WM8608 datasheet(2/54 Pages) WOLFSON

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WM8608

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PP Rev 1.5 March 2004

TABLE OF CONTENTS

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

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

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

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

PIN CONFIGURATION...........................................................................................4

ORDERING INFORMATION ..................................................................................4

ABSOLUTE MAXIMUM RATINGS .........................................................................6

ELECTRICAL CHARACTERISTICS ......................................................................7

TERMINOLOGY .....................................................................................................8

POWER CONSUMPTION ......................................................................................8

SIGNAL TIMING REQUIREMENTS .......................................................................9

POWER SUPPLY.......................................................................................................... 9

MASTER CLOCK TIMING ............................................................................................. 9

AUDIO INTERFACE TIMING – MASTER MODE ........................................................ 10

AUDIO INTERFACE TIMING – SLAVE MODE............................................................ 11

CONTROL INTERFACE TIMING – 3-WIRE MODE .................................................... 12

CONTROL INTERFACE TIMING – 2-WIRE MODE .................................................... 13

PWM OUTPUT TIMING .............................................................................................. 14

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

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

SIGNAL PATH............................................................................................................. 15

DIGITAL AUDIO INTERFACE ..................................................................................... 16

AUDIO INTERFACE CONTROL.................................................................................. 20

MASTER CLOCK AND AUDIO SAMPLE RATES........................................................ 21

SYNCHRONISER........................................................................................................ 24

CONTROL INTERFACE OPERATION ........................................................................ 25

INPUT PROCESSOR .................................................................................................. 26

BASS MANAGEMENT................................................................................................. 29

GRAPHIC EQUALISER............................................................................................... 31

DIGITAL DEEMPHASIS .............................................................................................. 33

DIGITAL VOLUME CONTROL .................................................................................... 33

SOFT MUTE AND AUTO-MUTE ................................................................................. 36

DYNAMIC PEAK COMPRESSOR ............................................................................... 37

INTERPOLATION FILTERS ........................................................................................ 41

PCM TO PWM CONVERTER ..................................................................................... 42

STANDBY, OUTPUT DISABLE AND RESET MODES ................................................ 45

EXTERNAL POWER SUPPLY CLOCK ....................................................................... 46

FILTER RESPONSES ................................................................................................. 48

DIGITAL DE-EMPHASIS CHARACTERISTICS........................................................... 49

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