wm9708 Wolfson Microelectronics plc, wm9708 Datasheet - Page 2

• Manufacturer Part Number: wm9708
• Description: Ac?97 Revision 2.1 Audio Codec
• Manufacturer: Wolfson Microelectronics plc

WM9708
DESCRIPTION ....................................................................................................... 1
AC’97 FEATURES ................................................................................................. 1
BLOCK DIAGRAM ................................................................................................. 1
TABLE OF CONTENTS ......................................................................................... 2
PIN CONFIGURATION ........................................................................................... 3
ORDERING INFORMATION .................................................................................. 3
PIN DESCRIPTION ................................................................................................ 4
ABSOLUTE MAXIMUM RATINGS ......................................................................... 5
RECOMMENDED OPERATING CONDITIONS ..................................................... 5
ELECTRICAL CHARACTERISTICS ...................................................................... 6
SYSTEM INFORMATION ..................................................................................... 12
DEVICE DESCRIPTION ....................................................................................... 13
SERIAL INTERFACE REGISTER MAP ............................................................... 28
RECOMMENDED EXTERNAL COMPONENTS .................................................. 29
PACKAGE DIMENSIONS .................................................................................... 31
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DETAILED TIMING DIAGRAMS..................................................................................... 9
AC-LINK LOW POWER MODE ...................................................................................... 9
COLD RESET ................................................................................................................ 9
WARM RESET ............................................................................................................. 10
CLOCK SPECIFICATIONS .......................................................................................... 10
DATA SETUP AND HOLD (50PF EXTERNAL LOAD) ................................................. 11
SIGNAL RISE AND FALL TIMES ................................................................................. 11
INTRODUCTION .......................................................................................................... 13
VARIABLE SAMPLE RATE SUPPORT ........................................................................ 13
GAIN CONTROL REGISTER LOCATION .................................................................... 14
MASTER SUPPORT .................................................................................................... 14
CONTROL INTERFACE ............................................................................................... 14
AC-LINK DIGITAL SERIAL INTERFACE PROTOCOL ................................................. 15
AC-LINK AUDIO OUTPUT FRAME (SDATA_OUT) ..................................................... 16
AC-LINK AUDIO INPUT FRAME (SDATA_IN) ............................................................. 19
AC-LINK LOW POWER MODE .................................................................................... 21
WAKING UP THE AC-LINK .......................................................................................... 21
SERIAL INTERFACE REGISTER MAP DESCRIPTION ............................................... 22
POWERDOWN CONTROL/STATUS REGISTER (INDEX 26H) .................................. 25
REVISION 2.1 REGISTERS (INDEX 28H T0 58H) ...................................................... 26
VENDOR RESERVED REGISTERS (INDEX 5AH - 7AH) ............................................ 27
RECOMMENDED EXTERNAL COMPONENTS VALUES ............................................ 30
RECOMMENDATIONS FOR 3.3V OPERATION .......................................................... 30
ADDRESS: ................................................................................................................... 32
TABLE OF CONTENTS
PD, Rev 4.2, August 2009
Production Data
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