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
POWER ON RESET (POR) ............................................................................................... 9
MPU 3-WIRE INTERFACE TIMING ..................................................................................12
MPU 2-WIRE INTERFACE TIMING ..................................................................................13
DEVICE DESCRIPTION............................................................................................14
INTRODUCTION ...............................................................................................................14
CLOCKING SCHEMES .....................................................................................................14
DIGITAL AUDIO INTERFACE ...........................................................................................15
AUDIO DATA SAMPLING RATES.....................................................................................17
HARDWARE CONTROL MODES .....................................................................................18
SOFTWARE CONTROL INTERFACE...............................................................................20
REGISTER MAP ...............................................................................................................21
ATTENUATION CONTROL...............................................................................................22
DIGITAL FILTER CHARACTERISTICS.............................................................................25
DAC FILTER RESPONSES...............................................................................................25
DIGITAL DE-EMPHASIS CHARACTERISTICS ........................................................26
APPLICATIONS INFORMATION ..............................................................................27
RECOMMENDED EXTERNAL COMPONENTS (PCM AUDIO).........................................27
RECOMMENDED EXTERNAL COMPONENTS VALUES .................................................27
RECOMMENDED ANALOGUE LOW PASS FILTER FOR PCM DATA FORMAT
(OPTIONAL)......................................................................................................................28
PACKAGE DIMENSIONS .........................................................................................29
IMPORTANT NOTICE ...............................................................................................30
ADDRESS: ........................................................................................................................30
w
PD, Rev 4.6, August 2008
2
WOLFSON [ WOLFSON MICROELECTRONICS PLC ]
