Description
The CXD2508AQ/AR is a digital signal processor for CD players and is equipped with built-in digital filters, no-sound data detection circuit, and 1-bit DAC.

Features
DSP block
• Digital PLL
• EFM frame sync protection
• SEC strategy-based error correction
• Subcode demodulation, CRC checking
• Digital spindle servo
• Servo auto sequencer
• Asymmetry compensation circuit
• Digital audio interface output
• 16K RAM
• Double-speed playback capability
• New microcomputer interface circuit

Digital filter, DAC block
• Double-speed playback capability
• Digital de-emphasis
• Digital attenuation
• No-sound data detection circuit
• 4 Fs oversampling filter
• Secondary ∆∑ noise shaper
• PWM-system pulse conversion output

Applications
    CD players