WM8728
Production Data
TABLE OF CONTENTS
DESCRIPTION ............................................................................................................1
FEATURES..................................................................................................................1
APPLICATIONS ..........................................................................................................1
BLOCK DIAGRAM ......................................................................................................1
TABLE OF CONTENTS ..............................................................................................2
PIN CONFIGURATION................................................................................................3
ORDERING INFORMATION .......................................................................................3
PIN DESCRIPTION .....................................................................................................4
ABSOLUTE MAXIMUM RATINGS..............................................................................5
DC ELECTRICAL CHARACTERISTICS .....................................................................6
ELECTRICAL CHARACTERISTICS ...........................................................................6
TERMINOLOGY................................................................................................................. 7
MASTER CLOCK TIMING.................................................................................................. 8
DIGITAL AUDIO INTERFACE............................................................................................ 8
POWER SUPPLY TIMING ................................................................................................. 9
MPU 3-WIRE INTERFACE TIMING ..................................................................................10
MPU 2-WIRE INTERFACE TIMING ..................................................................................11
DEVICE DESCRIPTION............................................................................................12
INTRODUCTION...............................................................................................................12
CLOCKING SCHEMES .....................................................................................................12
DIGITAL AUDIO INTERFACE...........................................................................................13
AUDIO DATA SAMPLING RATES.....................................................................................15
HARDWARE CONTROL MODES .....................................................................................16
SOFTWARE CONTROL INTERFACE...............................................................................18
REGISTER MAP ...............................................................................................................19
ATTENUATION CONTROL...............................................................................................20
DIGITAL FILTER CHARACTERISTICS.............................................................................23
DAC FILTER RESPONSES...............................................................................................23
DIGITAL DE-EMPHASIS CHARACTERISTICS........................................................24
APPLICATIONS INFORMATION ..............................................................................25
RECOMMENDED EXTERNAL COMPONENTS (PCM AUDIO).........................................25
RECOMMENDED EXTERNAL COMPONENTS VALUES.................................................25
RECOMMENDED ANALOGUE LOW PASS FILTER FOR PCM DATA FORMAT
(OPTIONAL)......................................................................................................................26
PACKAGE DIMENSIONS .........................................................................................27
IMPORTANT NOTICE...............................................................................................28
ADDRESS: ........................................................................................................................28
PD Rev 4.2 April 2004
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WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
