Description

The CXD2597Q is a digital signal processor LSI for CD players. This LSI incorporates a digital servo, digital filter, zero detection circuit, 1-bit DAC and analog low-pass filter on a single chip.

Features

Digital Signal Processor (DSP) Block

• Playback mode supporting CAV (Constant Angular Velocity)

• Frame jitter free

• 0.5× to 4× continuous playback possible

• Allows relative rotational velocity readout

• Wide capture range playback mode

• Spindle rotational velocity following method

• Supports normal-speed to 4× speed playback

• 16K RAM

• EFM data demodulation

• Enhanced EFM frame sync signal protection

• SEC strategy-based error correction

• Subcode demodulation and Sub Q data error detection

• Digital spindle servo

• 16-bit traverse counter

• Asymmetry correction circuit

• CPU interface on serial bus

• Error correction monitor signal, etc. output from a new CPU interface

• Servo auto sequencer

• Digital audio interface outputs

• Digital level meter, peak meter

• CD TEXT data demodulation