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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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Motor de Búsqueda de Datasheet de Componentes Electrónicos |
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STAC9708 Datasheet(PDF) 23 Page - List of Unclassifed Manufacturers |
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STAC9708 Datasheet(HTML) 23 Page - List of Unclassifed Manufacturers |
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23 / 56 page  SigmaTel, Inc. Preliminary STAC9708/11 23 10/02/98 Warm Reset - a warm reset will re-activate the AC-Link without altering the current STAC9708/11 register values. A warm reset is signaled by driving SYNC high for a minimum of 1us in the absence of BIT_CLK. Note: Within normal audio frames, SYNC is a synchronous input. However, in the absence of BIT_CLK, SYNC is treated as an asynchronous input used in the generation of a warm reset to the STAC9708/11. 4. STAC9708/11 MIXER The STAC9708/11 mixer is designed to the AC'97 specification to manage the playback and record of all digital and analog audio sources in the PC environment. These include: • System Audio: digital PCM input and output for business, games and multimedia • CD/DVD: analog CD/DVD-ROM Redbook audio with internal connections to Codec mixer • Mono microphone: choice of desktop mic, with programmable boost and gain • Speakerphone: use of system mic and speakers for telephone, DSVD, and video conferencing • Video: TV tuner or video capture card with internal connections to Codec mixer • AUX/synth: analog FM or wavetable synthesizer, or other internal source Figure 11. STAC9708/11 Mixer Functional Diagram -6 dB -6 dB vol mute PCM out D/A Phone MIC1 MIC2 LINE IN LINE OUT CD Video AUX Analog Audio Sources MONO OUT PCM IN 20dB Master Volume Mono Volume A/D A/D Master Input Volume Σ Σ M U X M U X vol vol vol vol vol vol vol mute mute mute mute mute mute mute KEY Mono Analog Stereo Analog Digital DAC OUT vol mute PCM out Surround D/A DAC Volume 3D 3D PC_BEEP Σ |
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