WM8952ECSSLASHRV datasheet(2/72 Pages) WOLFSON

2 / 72 page

WM8952

Pre Production

PP, Rev 3.1, June 2011

TABLE OF CONTENTS

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

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

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

BLOCK DIAGRAM ..........................................................................................................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 ......................................................................................................................8

AUDIO PATHS OVERVIEW ............................................................................................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 ...........................................................................................................16

ANALOGUE TO DIGITAL CONVERTER (ADC)....................................................................22

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

DIGITAL AUDIO INTERFACES.............................................................................................40

AUDIO SAMPLE RATES.......................................................................................................43

MASTER CLOCK AND PHASE LOCKED LOOP (PLL) .........................................................44

COMPANDING......................................................................................................................47

GENERAL PURPOSE INPUT/OUTPUT................................................................................49

CONTROL INTERFACE........................................................................................................49

3-WIRE SERIAL CONTROL MODE ......................................................................................51

READBACK IN 3-WIRE MODE .............................................................................................51

2-WIRE SERIAL CONTROL MODE ......................................................................................52

RESETTING THE CHIP ........................................................................................................52

POWER SUPPLIES ..............................................................................................................52

POWER MANAGEMENT ......................................................................................................54

POP MINIMISATION .............................................................................................................55

THERMAL SHUTDOWN .......................................................................................................55

REGISTER MAP............................................................................................................56

DIGITAL FILTER CHARACTERISTICS ........................................................................65

TERMINOLOGY ....................................................................................................................65

ADC FILTER RESPONSES...................................................................................................65

HIGHPASS FILTER...............................................................................................................66

NOTCH FILTERS AND LOW PASS FILTER.........................................................................67

RECOMMENDED EXTERNAL COMPONENTS ...........................................................69

PACKAGE DIAGRAM ...................................................................................................70

IMPORTANT NOTICE ...................................................................................................71

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