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VS1033 - MP3/AAC/WMA/MIDI AUDIO CODEC - VLSI Solution

VS1033 - MP3/AAC/WMA/MIDI AUDIO CODEC - VLSI Solution

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<strong>VLSI</strong><strong>Solution</strong> y<strong>VS1033</strong>c<strong>VS1033</strong>C8. FUNCTIONAL DESCRIPTIONWhen read, SCI HDAT0 and SCI HDAT1 contain header information that is extracted from <strong>MP3</strong> streamcurrently being decoded. After reset both registers are cleared, indicating no data has been found yet.The “sample rate” field in SCI HDAT0 is interpreted according to the following table:“sample rate” ID=3 ID=2 ID=0,13 - - -2 32000 16000 80001 48000 24000 120000 44100 22050 11025The “bitrate” field in HDAT0 is read according to the following table. Notice that for variable bitratestream the value changes constantly.Layer I Layer II Layer III“bitrate” ID=3 ID=0,1,2 ID=3 ID=0,1,2 ID=3 ID=0,1,2kbit/s kbit/s kbit/s15 forbidden forbidden forbidden forbidden forbidden forbidden14 448 256 384 160 320 16013 416 224 320 144 256 14412 384 192 256 128 224 12811 352 176 224 112 192 11210 320 160 192 96 160 969 288 144 160 80 128 808 256 128 128 64 112 647 224 112 112 56 96 566 192 96 96 48 80 485 160 80 80 40 64 404 128 64 64 32 56 323 96 56 56 24 48 242 64 48 48 16 40 161 32 32 32 8 32 80 - - - - - -8.7.10 SCI AIADDR (RW)SCI AIADDR indicates the start address of the application code written earlier with SCI WRAMADDRand SCI WRAM registers. If no application code is used, this register should not be initialized, or itshould be initialized to zero. For more details, see Application Notes for VS10XX.8.7.11 SCI VOL (RW)SCI VOL is a volume control for the player hardware. The most significant byte of the volume registercontrols the left channel volume, the low part controls the right channel volume. The channel volumeVersion 1.00, 2008-02-01 42

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