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LC895297 - Full CAV 20 x CD-ROM Decoder

Features

  • [CD-ROM Decoder and ATA-PI (IDE) Interface Blocks].
  • Full CAV 20× operation ATA-PI (IDE) interface Supports the use of EDO DRAM. Supports the use of up to 4 Mbits of buffer RAM. The user can set up arbitrary CD main channel and C2 flag areas in buffer RAM. Batch transfer function (function that automatically transfers the CD main channel and C2 flag data in a single operation. ) Multi-block transfer function (function that automatically tr.

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Full PDF Text Transcription

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Ordering number : EN*5785 CMOS LSI LC895297 Full CAV 20× CD-ROM Decoder with Built-in ATA-PI (IDE) Interface and CD-DSP Preliminary Overview The LC895297 is a single-chip CD-ROM decoder and CD-DSP system that supports full CAV 20× operation and includes a built-in ATA-PI (IDE) interface. I/O channel. • Performs unscrambling and de-interleaving to reorder the demodulated EFM signal in the prescribed manner. • Performs error code detection and correction, and flag processing. (C1: dual errors, C2: four errors) • Sets the C2 flags based on the C1 flags and a C2 check, and performs interpolation or muting depending on the C2 flags. Adopts a 2-point interpolation circuit, and converges the signal to the muting level if the C2 flags indicate over 2 consecutive uncorrectable errors.
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