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CXD2587

CD Digital Signal Processor with Built-in Digital Servo and DAC

Sony Semiconductor 

CXD2587Q

CD Digital Signal Processor with Built-in Digital Servo and DAC

For the availability of this product, please contact the sales office.

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.

80 pin LQFP (Plastic)

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

Structure

Silicon gate CMOS IC

Absolute Maximum Ratings

• Supply voltage VDD

–0.3 to +7.0 V

• Input voltage

VI

–0.3 to +7.0 V

(VSS – 0.3V to VDD + 0.3V)

• Output voltage VO

–0.3 to +7.0 V

• Storage temperature Tstg

–40 to +125 °C

• Supply voltage difference

VSS – AVSS –0.3 to +0.3 V

VDD – AVDD –0.3 to +0.3 V

Note) AVDD includes XVDD and AVSS includes XVSS.

Recommended Operating Conditions

• Supply voltage

VDD∗

3.0 to 4.0 V

• Operating temperature

Topr

–20 to +75 °C

∗ The VDD for the CXD2587Q varies according to the

playback speed.

Playback

speed

VDD [V]

CD-DSP block DAC block

4×

4.75 to 5.25

2×

3.0 to 5.5

4.5 to 5.5

1×

2.7 to 5.5

2.7 to 5.5

I/O Capacitance

• Input pin

CI

11 (Max.) pF

• Output pin

CO

11 (Max.) pF

• I/O pin

CI/O

11 (Max.) pF

Note) Measurement conditions VDD = VI = 0V

fM = 1MHz

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.

–1–

E97518-PS

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