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STAC9704T データシート(PDF) 6 Page - Hynix Semiconductor |
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STAC9704T データシート(HTML) 6 Page - Hynix Semiconductor |
6 / 49 page SigmaTel, Inc. STAC9704/7 6 10/02/98 Figure 2. STAC9704 Block Diagram The STAC9704/7 block diagram, above, illustrates its primary functional blocks. It performs fixed 48K sample rate D-A & A-D conversion, mixing, and analog processing. The digital interface communicates with the AC’97 controller via the five wire AC-link and contains the 64 word by 16-bit registers. Two fixed 48Kss DAC’s support a stereo PCM-out channel which contains a mix generated in the AC’97 controller of all software sources, including the internal synthesizer and any other digital sources. The Mixer block mixes the PCM-out with any analog sources, then outputs to LINE_OUT and LNLVL_OUT. The MONO_OUT delivers either mic only or a mono mix of sources from the mixer. The two fixed 48Ks ADC’s take any mix of mono or stereo sources, and convert it to a stereo PCM-in signal. All ADCs and DACs operate at 18-bit resolution. The STAC9704/7 is designed primarily to support stereo, 2-speaker PC audio. However, multi-channel encoded stereo can be played out through the LINE_OUT and LNLVL_OUT. This encoded signal can be played on normal stereo speakers, or sent to consumer equipment or other decoding devices via LINE_OUT and LNLVL_OUT to an analog input connection for multi-channel playback. As an option, the STAC9704/07 provides for a stereo enhancement feature, Sigmatel Surround 3D (SS3D). SS3D provides the listener with several options to expand the soundstage beyond the normal 2-speaker arrangement. Together with the logic component (controller) of AC’97, STAC9704/7 can be SoundBlaster ® and Windows ® Sound System compatible. SoundBlaster ® is a registered trademark of Creative Labs. Windows ® is a registered trademark of Microsoft Corporation. LINE_OUT MONO_OUT MIC1 MIC2 M U X MIXER Analog mixing and Gain control DAC DAC ADC ADC Power Management Digital Interface Registers 64 x 16 bits Mic Boost 0/20 dB PCM out DACs PCM in ADCs AC-link 4 stereo sources 2 mono sources mono stereo 48Kss 48Kss SYNC BIT_CLK SDATA_OUT SDATA_IN RESET LNLVL_OUT |
同様の部品番号 - STAC9704T |
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同様の説明 - STAC9704T |
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