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WM9704CFT/V Scheda tecnica(PDF) 1 Page - Wolfson Microelectronics plc |
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WM9704CFT/V Scheda tecnica(HTML) 1 Page - Wolfson Microelectronics plc |
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1 / 37 page  WM9704M AMC’97 Audio and Modem Codec Production Data, January 2001, Rev 3.2 WOLFSON MICROELECTRONICS LTD Lutton Court, Bernard Terrace, Edinburgh, EH8 9NX, UK Tel: +44 (0) 131 667 9386 Fax: +44 (0) 131 667 5176 Email: sales@wolfson.co.uk http://www.wolfson.co.uk Production Data datasheets contain final specifications current on publication date. Supply of products conforms to Wolfson Microelectronics’ Terms and Conditions. 2001 Wolfson Microelectronics Ltd . DESCRIPTION WM9704M is a high quality audio codec compliant with the AC'97 Revision 2.1 specification. The WM9704M has a proprietary mode which can meet the requirements of an AMC’97 codec. It performs full duplex 18-bit codec functions from 8 to 48ksamples/s and offers excellent quality with high SNR. Features include 3D sound and line-level outputs. Support is also provided for variable sample rates and master/slave mode operation. In modem mode the device supports simultaneous modem and stereo playback. WM9704M is interchangeable with AC'97 Codecs from Wolfson and other suppliers in the basic Revision 2.1 mode. WM9704M is fully operable with 3.3V or 5V or mixed 3.3/5.0V supplies and is packaged in an industry standard 48-pin TQFP package. FEATURES • 4 DAC channels, stereo ADC • S/N ratio > 95dB • Variable rate audio and modem support • Analogue 3D stereo enhancement • Line level outputs • Master/slave ID selection • Low power implementation • 3.3V or 5V operation • 48-pin TQFP package APPLICATIONS • Simultaneous modem operation and stereo playback BLOCK DIAGRAM (2) XTLIN (3) XTLOUT Σ Σ MUX (37) MONOOUT (39,41) LINEOUT (REAR) (35,36) LINEOUT (FRONT) Σ (45) CID0 (46) CID1 (43,44,48) GPIO[1:3] (6) BITCLK (10) SYNC (8) SDATAIN (5) SDATAOUT (11) RESETB (47) EAPD (30) MODE0 (40) MODE1 REV. 2.1 SWITCH REAR STEREO DAC SRC SERIAL I/F KEY: MONO STEREO VOL/ MUTE VOL/ MUTE VOL/ MUTE VOL/ MUTE VOL/ MUTE VOL/ MUTE VOL/ MUTE VOL/ MUTE FRONT STEREO DAC SRC VOL/ MUTE VOL/ MUTE VOL/ MUTE VOL/ MUTE VOL/ MUTE VOL/ MUTE Σ Σ CD (18,20) LINEIN (23,24) VIDEO (16,17) AUX (14,15) PHONE (13) PCBEEP (12) MIC[1] (21) MIC[2] (22) 0dB/ 20dB MASTER/ SLAVE SELECT GENERAL IO SUPPORT OSC 3D VOL STEREO ADC SRC MUX RECORD MUX AND MUTE SERIAL I/F WM9704M |
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