WM9707 w AC97 Revision 2.1 Audio CODEC with SPDIF Output DESCRIPTION AC97 FEATURES WM9707 is a high-quality stereo audio CODEC compliant 3.3V or 5V operation with the AC97 Revision 2.1 specification. It performs full 18-bit stereo CODEC duplex 18-bit CODEC functions and supports variable S/N ratio > 95dB sample rates from 8 to 48k samples/s and offers excellent quality with high SNR. Additional features include 3D sound Multiple stereo input mixer enhancement, line-level outputs, hardware sample rate Mono and stereo volume control conversion, master/slave mode operation and SPDIF output. 48-lead TQFP package Power management features WM9707 is interchangeable with AC97 CODECs from Wolfson and other suppliers. The WM9707 is fully operable Very low standby power on 3.3V or 5V or mixed 3.3/5V supplies, and is packaged in Variable rate audio (VRA) support the industry standard 48-lead TQFP package with 7mm body size. Analogue 3D stereo enhancement Line level outputs Supports Rev. 2.1 specified audio sample rates and filtering Master/slave ID selection PC-beep connection when device held reset SPDIF digital output BLOCK DIAGRAM VOL/ VOL/ LINEOUT MUTE MUTE VOL/ VOL/ LNLVLOUT MUTE MUTE KEY: VOL/ MUX MONOOUT MONO MUTE VOL/ STEREO MUTE VOL/ STEREO SRC MUTE DAC EAPD 3D VOL/ MUTE BITCLK VOL/ SYNC MUTE w SERIAL SDATAIN I/F VOL/ WM9707 MUTE SDATAOUT RESETB VOL/ MUTE SPDIF ENABLE VOL/ MUTE SPDIF STEREO CD VOL SRC ADC LINEIN RECORD VIDEO MUX MASTER/ AUX AND CID SLAVE PHONE MUTE SELECT PCBEEP MIC1 0dB/ MUX XTLIN 20dB OSC MIC2 XTLOUT WOLFSON MICROELECTRONICS plc Production Data, March 2009, Rev 4.4 Copyright 2009 Wolfson Microelectronics plc To receive regular email updates, sign up at WM9707 Production Data TABLE OF CONTENTS DESCRIPTION ....................................................................................................... 1 AC97 FEATURES ................................................................................................. 1 BLOCK DIAGRAM ................................................................................................. 1 TABLE OF CONTENTS ......................................................................................... 2 PIN CONFIGURATION ........................................................................................... 3 ORDERING INFORMATION .................................................................................. 3 ABSOLUTE MAXIMUM RATINGS ......................................................................... 4 RECOMMENDED OPERATING CONDITIONS ..................................................... 5 ELECTRICAL CHARACTERISTICS ...................................................................... 5 PIN DESCRIPTION ................................................................................................ 8 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 SYSTEM INFORMATION ..................................................................................... 12 DEVICE DESCRIPTION ....................................................................................... 15 INTRODUCTION .......................................................................................................... 15 3D STEREO ENHANCEMENT ..................................................................................... 15 VARIABLE SAMPLE RATE SUPPORT ........................................................................ 16 SPDIF DIGITAL AUDIO DATA OUTPUT ..................................................................... 16 GAIN CONTROL REGISTER LOCATION .................................................................... 16 MASTER/SLAVE ID SUPPORT ................................................................................... 17 CONTROL INTERFACE .............................................................................................. 17 AC-LINK DIGITAL SERIAL INTERFACE PROTOCOL ................................................. 17 AC-LINK AUDIO OUTPUT FRAME (SDATAOUT) ....................................................... 19 AC-LINK AUDIO INPUT FRAME (SDATAIN) ............................................................... 21 AC-LINK LOW POWER MODE .................................................................................... 23 WAKING UP THE AC-LINK ......................................................................................... 23 SERIAL INTERFACE REGISTER MAP DESCRIPTION .............................................. 24 POWERDOWN CONTROL/STATUS REGISTER (INDEX 26H) .................................. 27 REVISION 2.1 REGISTERS (INDEX 28H T0 58H) ...................................................... 28 VENDOR RESERVED REGISTERS (INDEX 5AH - 7AH) ............................................ 29 SERIAL INTERFACE REGISTER MAP ............................................................... 31 RECOMMENDED EXTERNAL COMPONENTS .................................................. 32 RECOMMENDED EXTERNAL COMPONENTS VALUES ............................................ 33 RECOMMENDATIONS FOR 3.3V OPERATION .......................................................... 33 PACKAGE DIMENSIONS .................................................................................... 34 IMPORTANT NOTICE .......................................................................................... 35 ADDRESS: ................................................................................................................... 35 PD, Rev 4.4, March 2009 w 2