HD49235FS Datasheet, PDF (1/41 Pages) Hitachi Semiconductor – Digital Signal Processor for CD

HD49235FS
Digital Signal Processor for CD
ADE-207-162A(Z)
2nd. Edition
August 1995
Description
The HD49235FS is a digital signal processor for compact disc (CD) applications.
Features
• Powerful error correction capability: two-symbol C1 correction and four-symbol C2 correction
• Quadruple-speed reproduction supported (maintaining two-symbol C1 and four-symbol C2 error
correction)
• On-chip analog PLL and digital PLL (VCO and phase detector)
• Automatic adjustment of the free-running frequency of the VCO
• Built-in microprocessor interface
• On-chip 80-bit shift registers for Q-code buffering
• Cyclic redundancy check on Q-code values
• Audio output functions: monaural output, single-channel mute, left-right reverse, soft mute, –12-dB
attenuation
• 16-kbit RAM on-chip