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WM9705 Datasheet(PDF) 2 Page - Wolfson Microelectronics plc |
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WM9705 Datasheet(HTML) 2 Page - Wolfson Microelectronics plc |
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2 / 55 page  WM9705 Production Data w PD Rev 4.0 December 2003 2 TABLE OF CONTENTS DESCRIPTION ............................................................................................................1 FEATURES..................................................................................................................1 APPLICATIONS ..........................................................................................................1 BLOCK DIAGRAM ......................................................................................................1 TABLE OF CONTENTS ..............................................................................................2 ORDERING INFORMATION .......................................................................................4 ABSOLUTE MAXIMUM RATINGS ..............................................................................4 RECOMMENDED OPERATING CONDITIONS ..........................................................5 PIN CONFIGURATION................................................................................................6 PIN DESCRIPTION .....................................................................................................7 ELECTRICAL CHARACTERISTICS ...........................................................................8 POWER CONSUMPTION .........................................................................................12 DETAILED TIMING DIAGRAMS ...............................................................................13 AC-LINK LOW POWER MODE .........................................................................................13 COLD RESET....................................................................................................................13 WARM RESET ..................................................................................................................14 CLOCK SPECIFICATIONS ...............................................................................................14 DATA SETUP AND HOLD (50PF EXTERNAL LOAD).......................................................15 SIGNAL RISE AND FALL TIMES ......................................................................................15 DEVICE DESCRIPTION ............................................................................................16 INTRODUCTION ...............................................................................................................16 AC’97 FEATURES.............................................................................................................16 NON - AC’97 FEATURES..................................................................................................17 PEN DIGITIZER AND AUXILIARY ADC ............................................................................19 3-D STEREO ENHANCEMENT.........................................................................................19 VARIABLE SAMPLE RATE SUPPORT .............................................................................20 SPDIF OR I 2S DIGITAL AUDIO DATA OUTPUT...............................................................20 PRIMARY/SECONDARY ID SUPPORT ............................................................................21 HEADPHONE DRIVE AND HEADSET AUTODETECT .....................................................21 DATA SLOT MAPPING .....................................................................................................23 AC-LINK DIGITAL SERIAL INTERFACE PROTOCOL ......................................................23 AC-LINK AUDIO OUTPUT FRAME (SDATAOUT) ............................................................25 AC-LINK AUDIO INPUT FRAME (SDATAIN) ....................................................................27 AC-LINK LOW POWER MODE .........................................................................................29 WAKING UP THE AC-LINK...............................................................................................29 SERIAL INTERFACE REGISTER MAP DESCRIPTION....................................................30 REGISTER 28H – EXTENDED AUDIO ID.........................................................................34 REGISTER 2AH – EXTENDED AUDIO STATUS AND CONTROL REGISTER ................35 REGISTER 2CH AND 32H – AUDIO SAMPLE RATE CONTROL REGISTERS................35 REGISTERS 3AH – SPDIF CONTROL REGISTER ..........................................................36 VENDOR SPECIFIC REGISTERS (INDEX 5AH - 7AH) ....................................................36 SERIAL INTERFACE REGISTER MAP ....................................................................39 |
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