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Description

The CXD2587Q 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.

Features

Digital Signal Processor (DSP) Block

? 1×, 2×, 4× speed playback supported

? 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

? 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

Digital Servo (DSSP) Block

? Microcomputer software-based flexible servo control

? Offset cancel function for servo error signal

? Auto gain control function for servo loop

? E:F balance, focus bias adjustment function

? Surf jump function supporting micro two-axis.

Digital Filter, DAC and Analog Low-pass Filter Blocks

? DBB (digital bass boost) function

? Double-speed playback supported

? Digital de-emphasis

? Digital attenuation

? 8Fs oversampling filter

? S/N: 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 less

Applications

CD players