CXD2500BQ Datasheet, PDF (1/48 Pages) Sony Corporation – CD Digital Signal Processor

CD Digital Signal Processor
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.
Structure
Silicon-gate CMOS IC
CXD2500BQ
80 pin QFP (Plastic)
Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by
any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the
operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits.
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