WM8728
TABLE OF CONTENTS
Production Data
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
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PD Rev 4.2 April 2004
2