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LC78631E - Compact Disk Player DSP

Key Features

  • VCEC support.
  • Built-in PLL circuit for EFM detection (supports 4× playback).
  • Built-in PLL for variable pitch playback (±13%).
  • 18KB RAM on chip.
  • Error detection and correction (corrects two errors in C1 and four errors in C2).
  • Frame jitter margin: ±8 frames.
  • Frame synchronization signal detection, protection, and insertion.
  • Dual interpolation adopted in the interpolation circuit.
  • EFM data demodulation.
  • Sub.

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Full PDF Text Transcription (Reference)

The following content is an automatically extracted verbatim text from the original manufacturer datasheet and is provided for reference purposes only.

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Ordering number : EN 5342 CMOS LSI LC78631E Compact Disk Player DSP Overview The LC78631E is a compact disc D/A signal-processing LSI for CD-ROM drives that provides a variable clock error correction (VCEC) mode. The LC78631E demodulates the EFM signal from the optical pickup and performs de-interleaving, error detection, error correction, digital filtering, and other processing. The LC78631E includes an on-chip 1-bit D/A converter, and executes commands sent from a control microprocessor.