WM8952 View Datasheet(PDF) - Wolfson Microelectronics plc
Part Name
Description
Manufacturer
WM8952 Datasheet PDF : 72 Pages
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WM8952
TABLE OF CONTENTS
Pre Production
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
REGISTER BITS BY ADDRESS ...........................................................................................57
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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PP, Rev 3.1, June 2011
2
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