Description

The CXD2529Q is a digital signal processor LSI for CD players and is equipped with built-in digital filters, 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

   – Allows 0.5 to double-speed continuous playback

   – Allows relative rotational velocity readout

   – Supports external spindle control

• Wide capture range mode

   – Spindle rotational velocity following method

   – Supports normal-speed and double-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 compensation circuit

• Serial bus-based CPU interface

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

• Servo auto sequencer

• Digital audio interface output

• Digital peak meter

Digital Filter, DAC, Analog Low-Pass Filter Block

• DBB (Digital Bass Boost)

• Supports double-speed playback

• Digital de-emphasis

• Digital attenuation function

• Zero detection function

• 8fs oversampling digital filter

• S/N ratio: 100dB or more (master clock: 384fs typ.) Logical value: 109dB

• THD + N: 0.007% or less (master clock: 384fs typ.)

• Rejection band attenuation: –60dB or more

Applications

  CD players