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CXD3021R

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

Sony Semiconductor 

CXD3021R

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

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

Description

The CXD3021R is a digital signal processor LSI for

CD players. This LSI incorporates a digital servo,

digital filter and 1-bit DAC.

120 pin LQFP (Plastic)

Features

• All digital signal processing during playback is

performed with a single chip

• Highly integrated mounting possible due to a built-

in RAM

Digital Signal Processor (DSP) Block

• Playback mode supporting CAV (Constant Angular

Velocity)

• Frame jitter free

• 0.5× to 32× continuous playback possible with a

low external clock

• Allows relative rotational velocity readout

• Wide capture range playback mode

• Spindle rotational velocity following method

• Supports 1× to 32× playback by switching the

built-in VCO

• The bit clock, which strobes the EFM signal, is

generated by the digital PLL.

• Digital PLL master clock can be set to 2/3 the

conventional one.

• EFM data demodulation

• Enhanced EFM frame sync signal protection

• Refined super strategy-based powerful error

correction

C1: double correction, C2: quadruple correction

Supported during 32× playback

• Noise reduction during track jumps

• Auto zero-cross mute

• Subcode demodulation and Sub-Q data error

detection

• Digital CLV spindle servo (built-in oversampling filter)

• 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

• Fine search performs track jumps with high

accuracy

• Digital audio interface outputs

• Digital level meter, peak meter

• Bilingual compatible

• VCO control mode

• Digital Out can be generated from the audio serial

inputs.

• Supports three types of DA interface

(48 bits/64 bits/32 bits)

• DSP, servo and DAC blocks support sleep mode.

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 and surf brake functions supporting micro

two-axis

• Tracking filter: 6 stages

Focus filter: 5 stages

• Servo drive DAC output possible

Digital Filter and DAC Blocks

• Digital de-emphasis

• Digital attenuation

• 8fs oversampling filter

• Adoption of a tertiary ∆∑ noise shaper

• Supports double-speed playback

Structure

Silicon gate CMOS IC

Absolute Maximum Ratings

• Supply voltage

VDD

–0.3 to +4.4 V

• Input voltage

VI

–0.3 to +4.4 V

(VSS – 0.3 to VDD + 0.3) V

• Output voltage

VO

–0.3 to +4.4 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

Recommended Operating Conditions

• Supply voltage

VDD∗

3.0 to 4.0 V

• Operating temperature Topr

–20 to +75 °C

∗ The VDD (min.) for the CXD3021R varies according

to the playback speed and built-in VCO selection.

The VDD (min.) for the CXD3021R under various

conditions are as shown on the following page.

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–

E98209A9Z-PS

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