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WM9701A Datasheet(PDF) 1 Page - Wolfson Microelectronics plc |
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WM9701A Datasheet(HTML) 1 Page - Wolfson Microelectronics plc |
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1 / 24 page  WM9701A Low Power AC’97 Multimedia Audio 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 The WM9701A is a high-quality stereo audio codec compliant with the Intel AC’97 Rev 1.03 specification. Forming the analogue component PC audio solution, it performs full-duplex 18-bit codec functions at 48 ksamples/s and offers excellent audio quality with high SNR. In addition, the WM9701A provides a comprehensive analogue mixer with 4 sets of stereo inputs, plus phone, 2 microphone, and PC-beep inputs. On-chip reference circuits generate the necessary bias voltages for the device, and a 5-pin digital bi- directional serial interface allows transfer of control data and DAC and ADC words to and from the AC’97 controller. The WM9701A is particularly suited to low power applications such as notebook PCs. FEATURES • 3.3V or 5V operation • 18-bit stereo codec • S/N ratio > 95dB • Multiple stereo input mixer • Mono and stereo volume control • 48-pin TQFP package • Power management features • Very low standby power APPLICATIONS • Notebook PC • PC sound cards • Motherboards BLOCK DIAGRAM LINEIN (23,24) VIDEO (16,17) PCBEEP (12) VOL/ MUTE VOL/ MUTE VOL/ MUTE VOL/ MUTE VOL/ MUTE Σ VOL/ MUTE Σ (37) MONOOUT (35,36) LINEOUT Σ CD (18,20) AUX (14,15) PHONE (13) MIC[1] (21) MIC[2] (22) 0dB/ 20dB (6) BITCLK (10) SYNC (8) SDATAIN (5) SDATAOUT (11) RESETB OSC (2) XTLIN (3) XTLOUT VOL/ MUTE STEREO DAC Σ VOL STEREO ADC VOL/ MUTE MUX VOL/ MUTE VOL/ MUTE MUX KEY: MONO STEREO RECORD MUX AND MUTE SERIAL I/F WM9701A |
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