WM8778SEDS/RV Просмотр технического описания (PDF) - Wolfson Microelectronics plc
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WM8778SEDS/RV Datasheet PDF : 52 Pages
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WM8778
TABLE OF CONTENTS
Production Data
DESCRIPTION .......................................................................................................1
FEATURES.............................................................................................................1
APPLICATIONS .....................................................................................................1
BLOCK DIAGRAM .................................................................................................1
TABLE OF CONTENTS .........................................................................................2
PIN CONFIGURATION...........................................................................................3
ORDERING INFORMATION ..................................................................................3
ABSOLUTE MAXIMUM RATINGS.........................................................................5
ELECTRICAL CHARACTERISTICS ......................................................................6
TERMINOLOGY ............................................................................................................ 7
MASTER CLOCK TIMING......................................................................................8
DIGITAL AUDIO INTERFACE – MASTER MODE ......................................................... 8
DIGITAL AUDIO INTERFACE – SLAVE MODE ............................................................ 9
3-WIRE MPU INTERFACE TIMING ............................................................................ 11
CONTROL INTERFACE TIMING – 2-WIRE MODE .................................................... 12
INTERNAL POWER ON RESET CIRCUIT ..........................................................13
DEVICE DESCRIPTION.......................................................................................15
INTRODUCTION ......................................................................................................... 15
AUDIO DATA SAMPLING RATES............................................................................... 15
ZERO DETECT ........................................................................................................... 17
POWERDOWN MODES ............................................................................................. 17
DIGITAL AUDIO INTERFACE ..................................................................................... 17
CONTROL INTERFACE OPERATION ........................................................................ 22
CONTROL INTERFACE REGISTERS ........................................................................ 24
LIMITER / AUTOMATIC LEVEL CONTROL (ALC) ...................................................... 32
REGISTER MAP ......................................................................................................... 38
DIGITAL FILTER CHARACTERISTICS ...............................................................45
DAC FILTER RESPONSES......................................................................................... 45
ADC FILTER RESPONSES......................................................................................... 46
ADC HIGH PASS FILTER ........................................................................................... 46
DIGITAL DE-EMPHASIS CHARACTERISTICS........................................................... 47
APPLICATIONS INFORMATION .........................................................................48
RECOMMENDED EXTERNAL COMPONENTS .......................................................... 48
PACKAGE DIMENSIONS ....................................................................................50
IMPORTANT NOTICE ..........................................................................................51
ADDRESS: .................................................................................................................. 51
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PD, Rev 4.2, July 2008
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