CXD3068Q View Datasheet(PDF) - Sony Semiconductor

Part Name

Description

Manufacturer

CXD3068Q

CD Digital Signal Processor with Built-in Digital Servo

Sony Semiconductor 

CXD3068Q

CD Digital Signal Processor with Built-in Digital Servo Preliminary

Description

The CXD3068Q is a digital signal processor LSI for

CD players. This LSI incorporates a digital servo.

Features

• All digital signal processings during playback are

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 4× continuous playback possible

• Allows relative rotational velocity readout

• Wide capture range playback mode

• Spindle rotational velocity following method

• Supports 1× to 4× playback variable pitch

playback

• Bit clock, which strobes the EFM signal, is

generated by the digital PLL.

• EFM data demodulation

• Enhanced EFM frame sync signal protection

• Refined super strategy-based powerful error

correction

C1: double correction, C2: quadruple correction

Supported during 4× playback

• Noise reduction during track jumps

• Auto zero-cross mute

• 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

• Fine search performs track jumps with high

accuracy

• Digital audio interface output

• Digital level meter, peak meter

• Bilingual supported

• VCO control mode

• CD TEXT data demodulation

• EFM playability reinforcement function

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

• Tracking filter: 6 stages

Focus filter: 5 stages

80 pin QFP (Plastic)

Applications

CD players

Structure

Silicon gate CMOS IC

Absolute Maximum Ratings

• Supply voltage

VDD

–0.5 to +4.6 V

• Input voltage

VI

–0.5 to +4.6 V

(VSS – 0.5V to VDD + 0.5V)

• Output voltage

VO

–0.5 to +4.6 V

(VSS – 0.5V to VDD + 0.5V)

• Storage temperature Tstg

–55 to +150 °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

2.7 to 3.6

V

• Operating temperature

Topr

–20 to +75 °C

Input/Output Capacitance

• Input pin

CI

9 (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–

PE00326-PS

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