WM8980CGEFLSLASHV datasheet(2/123 Pages) WOLFSON

2 / 123 page

WM8980

Pre-Production

PP, Rev 3.8, May 2012

TABLE OF CONTENTS

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

BLOCK DIAGRAM ................................................................................................ 1

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

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

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 ............................................................................................................ 10

SPEAKER OUTPUT THD VERSUS POWER...................................................... 11

POWER CONSUMPTION.................................................................................... 12

ESTIMATING SUPPLY CURRENT ............................................................................... 12

AUDIO PATHS OVERVIEW ................................................................................ 14

SIGNAL TIMING REQUIREMENTS .................................................................... 15

SYSTEM CLOCK TIMING ............................................................................................. 15

AUDIO INTERFACE TIMING – MASTER MODE.......................................................... 15

AUDIO INTERFACE TIMING – SLAVE MODE ............................................................. 16

CONTROL INTERFACE TIMING – 3-WIRE MODE ...................................................... 17

CONTROL INTERFACE TIMING – 2-WIRE MODE ...................................................... 18

INTERNAL POWER ON RESET CIRCUIT.......................................................... 19

DEVICE DESCRIPTION ...................................................................................... 21

INTRODUCTION ........................................................................................................... 21

INPUT SIGNAL PATH ................................................................................................... 23

ANALOGUE TO DIGITAL CONVERTER (ADC) ........................................................... 31

INPUT LIMITER / AUTOMATIC LEVEL CONTROL (ALC)............................................ 35

OUTPUT SIGNAL PATH ............................................................................................... 47

3D STEREO ENHANCEMENT...................................................................................... 54

ANALOGUE OUTPUTS................................................................................................. 54

VIDEO BUFFER ............................................................................................................ 70

DIGITAL AUDIO INTERFACES..................................................................................... 74

AUDIO SAMPLE RATES............................................................................................... 79

MASTER CLOCK AND PHASE LOCKED LOOP (PLL) ................................................ 79

GENERAL PURPOSE INPUT/OUTPUT........................................................................ 83

OUTPUT SWITCHING (JACK DETECT)....................................................................... 84

CONTROL INTERFACE................................................................................................ 86

RESETTING THE CHIP ................................................................................................ 87

POWER SUPPLIES....................................................................................................... 87

RECOMMENDED POWER UP/DOWN SEQUENCE.................................................... 87

POWER MANAGEMENT .............................................................................................. 92

DIGITAL FILTER CHARACTERISTICS ............................................................ 113

TERMINOLOGY .......................................................................................................... 113

DAC FILTER RESPONSES ........................................................................................ 114

ADC FILTER RESPONSES ........................................................................................ 114

HIGHPASS FILTER..................................................................................................... 115

WM8980CGEFL/V 数据表(PDF) 2 Page - Wolfson Microelectronics plc

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