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XWM9708 Datasheet(PDF) 1 Page - Wolfson Microelectronics plc |
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XWM9708 Datasheet(HTML) 1 Page - Wolfson Microelectronics plc |
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1 / 28 page  WM9708 AC’97 Revision 2.1 Audio Codec Advanced Information, April 2001, Rev 2.0 WOLFSON MICROELECTRONICS LTD Bernard Terrace, Edinburgh, EH8 9NX, UK Tel: +44 (0) 131 667 9386 Fax: +44 (0) 131 667 5176 Email: sales@wolfson.co.uk www.wolfsonmicro.com Advanced Information data sheets contain preliminary data on new products in the preproduction phase of development. Supplementary data will be published at a later date. 2001 Wolfson Microelectronics Ltd . DESCRIPTION WM9708 is a high-quality stereo audio codec compliant with the AC’97 Revision 2.1 specification. It performs full duplex 18-bit codec functions and supports variable sample rates from 8 to 48k samples/s and offers excellent quality with high SNR. Additional features include 3D sound enhancement, line-level outputs, and hardware sample rate conversion. The WM9708 is fully operable on 3.3V or 5V or mixed 3.3/5V supplies, and is packaged in a 28-pin SSOP package. AC’97 FEATURES • 18-bit stereo codec • S/N ratio > 95dB • Multiple stereo input mixer • Mono and stereo volume control • Power management features • Very low standby power • Variable rate audio (VRA) support • Analogue 3D stereo enhancement • Line level outputs • Supports Rev. 2.1 specified audio and modem sample rates and filtering • PC-beep connection when device held reset • 3.3V or 5V operation • 28-pin SSOP package BLOCK DIAGRAM VOL/ MUTE VOL/ MUTE VOL/ MUTE Σ VOL/ MUTE Σ (26) MONOOUT (25,56) LINEOUT Σ CD (13,15) LINEIN (17,18) PCBEEP (12) MIC1 (16) 0dB/ 20dB (7) BITCLK (10) SYNC (9) SDATAIN (6) SDATAOUT OSC (4) XTLIN (5) XTLOUT VOL/ MUTE STEREO DAC SRC Σ VOL STEREO ADC SRC VOL/ MUTE MUX VOL/ MUTE MUX KEY: MONO STEREO RECORD MUX AND MUTE SERIAL I/F VOL/ MUTE (11) RESETB WM9708 |
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