WM8976CGEFLSLASHV datasheet(2/114 Pages) WOLFSON

2 / 114 page

WM8976

Production Data

PD, Rev 4.5, November 2011

TABLE OF CONTENTS

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

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

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

PIN DESCRIPTION................................................................................................ 5

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

RECOMMENDED OPERATING CONDITIONS..................................................... 6

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

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

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

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

AUDIO PATHS OVERVIEW ................................................................................ 13

SIGNAL TIMING REQUIREMENTS .................................................................... 14

SYSTEM CLOCK TIMING ............................................................................................. 14

AUDIO INTERFACE TIMING – MASTER MODE.......................................................... 14

AUDIO INTERFACE TIMING – SLAVE MODE ............................................................. 15

CONTROL INTERFACE TIMING – 3-WIRE MODE ...................................................... 16

CONTROL INTERFACE TIMING – 2-WIRE MODE ...................................................... 17

INTERNAL POWER ON RESET CIRCUIT .......................................................... 18

DEVICE DESCRIPTION ...................................................................................... 20

INTRODUCTION ........................................................................................................... 20

INPUT SIGNAL PATH ................................................................................................... 22

ANALOGUE TO DIGITAL CONVERTER (ADC) ........................................................... 28

INPUT LIMITER / AUTOMATIC LEVEL CONTROL (ALC)............................................ 32

OUTPUT SIGNAL PATH ............................................................................................... 44

3D STEREO ENHANCEMENT...................................................................................... 51

ANALOGUE OUTPUTS................................................................................................. 51

DIGITAL AUDIO INTERFACES..................................................................................... 66

AUDIO SAMPLE RATES............................................................................................... 71

MASTER CLOCK AND PHASE LOCKED LOOP (PLL) ................................................ 71

COMPANDING .............................................................................................................. 73

GENERAL PURPOSE INPUT/OUTPUT........................................................................ 75

OUTPUT SWITCHING (JACK DETECT)....................................................................... 76

CONTROL INTERFACE................................................................................................ 77

RESETTING THE CHIP ................................................................................................ 78

POWER SUPPLIES....................................................................................................... 79

RECOMMENDED POWER UP/DOWN SEQUENCE.................................................... 80

POWER MANAGEMENT .............................................................................................. 84

DIGITAL FILTER CHARACTERISTICS ............................................................ 103

TERMINOLOGY .......................................................................................................... 103

DAC FILTER RESPONSES ........................................................................................ 104

ADC FILTER RESPONSES ........................................................................................ 104

HIGHPASS FILTER..................................................................................................... 105

5-BAND EQUALISER .................................................................................................. 106

WM8976CGEFL/V Datasheet(PDF) 2 Page - Wolfson Microelectronics plc

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