WM8956CGEFLSLASHV datasheet(2/80 Pages) WOLFSON

2 / 80 page

WM8956

Production Data

PD, November 2011, Rev 4.1

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

OUTPUT PGA GAIN.............................................................................................. 9

TYPICAL 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 – 2-WIRE MODE....................................................... 13

INTERNAL POWER ON RESET CIRCUIT .......................................................... 14

DEVICE DESCRIPTION ...................................................................................... 16

INTRODUCTION............................................................................................................ 16

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

OUTPUT SIGNAL PATH................................................................................................ 25

ANALOGUE OUTPUTS ................................................................................................. 31

ENABLING THE OUTPUTS ........................................................................................... 34

HEADPHONE OUTPUT ................................................................................................. 35

CLASS D SPEAKER OUTPUTS .................................................................................... 36

VOLUME UPDATES ...................................................................................................... 37

HEADPHONE JACK DETECT ....................................................................................... 39

THERMAL SHUTDOWN ................................................................................................ 41

GENERAL PURPOSE INPUT/OUTPUT ........................................................................ 41

DIGITAL AUDIO INTERFACE........................................................................................ 42

AUDIO INTERFACE CONTROL .................................................................................... 46

CLOCKING AND SAMPLE RATES................................................................................ 49

CONTROL INTERFACE................................................................................................. 56

POWER MANAGEMENT ............................................................................................... 56

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

DAC FILTER RESPONSES ........................................................................................... 72

DE-EMPHASIS FILTER RESPONSES .......................................................................... 74

APPLICATIONS INFORMATION ........................................................................ 75

RECOMMENDED EXTERNAL COMPONENTS............................................................ 75

PACKAGE DRAWING......................................................................................... 78

IMPORTANT NOTICE ......................................................................................... 79

ADDRESS: ..................................................................................................................... 79

REVISION HISTORY ........................................................................................... 80

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