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.
Package Dimensions
unit: mm 3174-QFP80E
[LC78631E]
Features
• VCEC support • Built-in PLL circuit for EFM detection (supports 4× playback) • Built-in PLL for variable pitch playback (±13%) • 18KB RAM ...