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STA310 数据表(PDF) 25 Page - STMicroelectronics |
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STA310 数据表(HTML) 25 Page - STMicroelectronics |
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25 / 90 page ![]() 25/90 STA310 4.10 What Can Be Processed at the Same Time Same Time 1 Same Time 2 5 PCM OUTPUT CONFIGURATIONS 5.1 Output configurations The figure below shows the different configurations supported at PCM output stage. They are selected by the OCFG register contents. - In configuration 1, 3 and 4, the main channels are attenuated by 18.5dB, and the LFE by 8.5dB before summing. After digital/analog conversion, the subwoofer preamplifier has to compensate for the different gains of the main channels and subwoofer. - In configuration 2, the main channels are attenuated by 16dB and the LFE by 6dB before processing. - In configuration 0, outputs are only scaled and rounded (see next section). The same configurations will be used in case of a decoded Pro Logic program with the exception that the sur- round channels will not be added to the bass redirection (the surround channels of a Pro Logic program are band limited and bass is considered as leakage). Decoder MPEG1 MP3 AC3 MPEG2 LPCM Video PCM MLP LPCM Audio PinkNoise Beep Tone Post Pcrocessing Bass Management Commands Mute Skipframe Pause Pause block Volume Control S/PdifOutput PCM (Left ,Right PCM (VCRs) Encoded Mute Off Post Pcrocessing Prologic Post Pcrocessing Karaoke Channel Delay Post Pcrocessing Karaoke Channel Delay Post Pcrocessing Karaoke Channel Delay |
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