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STAC9711T 数据表(PDF) 7 Page - List of Unclassifed Manufacturers |
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STAC9711T 数据表(HTML) 7 Page - List of Unclassifed Manufacturers |
7 / 56 page SigmaTel, Inc. Preliminary STAC9708/11 7 10/02/98 Figure 2. STAC9708 Block Diagram The STAC9708/11 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. Four, fixed 48Ks/s DAC’s support two stereo PCM-out channels for surround sound applications requiring four speakers. The digital mix of all software sources, including the internal synthesizer and any other digital sources, is performed in the digital controller. The Mixer block mixes the PCM_OUT with any analog sources, then outputs to LINE_OUT. The surround DACs are output to DAC_OUT, and this stereo output has independent volume control. In addition, the surround DACs can be input to the Mixer block and output to LINE_OUT. The MONO_OUT delivers either mic only or a mono mix of sources from the mixer. The two fixed 48Ks/s ADC’s take any mix of mono or stereo sources and convert it to a stereo PCM-in signal. All ADC's and DAC's operate at 18-bit resolution. The STAC9708/11 is designed primarily to support multi-channel, 4-speaker PC audio. However, true AC-3 playback can be achieved for 6-speaker applications by taking advantage of the multi-codec option in the STAC9708/11. Using this option with a STAC9704/07 as the primary codec, and the STAC9708 as the secondary codec, 6-channel output can be achieved in an AC'97 architecture. Also, the STAC9708/11 provides for a stereo enhancement feature, Sigmatel Surround 3D or SS3D. SS3D provides the listener with several options to expand the soundstage beyond the normal 2-speaker arrangement. Together with the logic component (controller or advanced core logic chip-set) of AC'97, STAC9708/11 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 M IC1 M IC2 M U X M IXER 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 DAC_OUT DAC DAC ID0 ID1 Multi-Codec |
类似零件编号 - STAC9711T |
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类似说明 - STAC9711T |
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