Description
The CXD2500BQ is a digital signal processing LSI designed for use in compact disc players. It has the following functions:
• Wide-frame jitter margin (±28 frames) realized by a built-in 32K RAM.
• Bit clock generated by digital PLL for strobing EFM signals. Capture range of ±150 kHz and over.
• EFM data demodulation
• Enhanced protection of EFM Frame Sync signals
• Powerful error correction based on Refined Super Strategy Error correction C1: Double correction
C2: Quadruple correction
• Double-speed playback and vari-pitch playback
• Reduced noise generation at track jump
• Auto zero-cross muting
• Subcode demodulation and subcode Q data error detection
• Digital spindle servo system (incorporating an oversampling filter)
• 16-bit traverse counter
• Built-in asymmetry correction circuit
• CPU interface using a serial bus
• Servo auto sequencer
• Output for digital audio interface
• Built-in digital level meter and peak meter
• Bilingual

FEATUREs
• All digital signals for regeneration are processed using one chip.
• The built-in RAM enables high-integration mounting.