CXD2508AQ

更新时间： 2024-01-25 19:40:37

品牌	Logo	应用领域
索尼 - SONY		数字信号处理器
页数	文件大小	规格书
49页	856K
描述
CD Digital Signal Processor

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CXD2508AQ 数据手册

CXD2508AQ/AR

CD Digital Signal Processor

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

Description

CXD2508AQ

80 pin QFP (Plastic)

CXD2508AQ

80 pin QFP (Plastic)

The CXD2508AQ/AR is a digital signal processor

for CD players and is equipped with built-in digital

filters, no-sound data detection circuit, and 1-bit

DAC.

Features

DSP block

• Digital PLL

• EFM frame sync protection

• SEC strategy-based error correction

• Subcode demodulation, CRC checking

• Digital spindle servo

CXD2508AR

80 pin LQFP (Plastic)

CXD2508AQ

80 pin QFP (Plastic)

• Servo auto sequencer

• Asymmetry compensation circuit

• Digital audio interface output

• 16K RAM

• Double-speed playback capability

• New microcomputer interface circuit

Digital filter, DAC block

• Double-speed playback capability

• Digital de-emphasis

• Digital attenuation

Applications

CD players

• No-sound data detection circuit

• 4 Fs oversampling filter

• Secondary ∆∑ noise shaper

• PWM-system pulse conversion output

Structure

Silicon gate CMOS IC

Absolute Maximum Ratings

• Supply voltage V^DD

–0.3 to 7.0

Recommended Operating Conditions

• Input voltage

Note)

• Supply voltage VDD

4.5 to 5.5V

VIN Vss–0.3V (min.) VDD+0.3 (max.) V

(double-speed playback)

3.5 to 5.5V

(normal-speed playback)

3.4 to 5.5V

(low power consumption

or special playback mode)

• Output voltage VO

• Storage temperature

Tstg

–0.3 to 7.0

–40 to 125

°C

• Supply voltage variation

SS–AVSS –0.3V (min.) +0.3V (max.)

DD–AVDD –0.3V (min.) +0.3V (max.)

• Operating temperature

Topr

–20 (min.) 75 (max.)

°C

Note) VDD (min.) is varied by the playback speed and built-in

VCO in the CXD2508AQ/AR. 4.5V is the value using the

VCO which generates the slower frequency in double-

speed playback. The table below shows the VDD (min.)

for each condition.

VDD (min.) [V]

Playback

VCO

speed

DAC block

high-speed normal-speed

× 2

3.40

4.50

3.50

3.40

× 1

When the internal operation of the LSI is set to double-

speed mode and the crystal oscillation frequency is

halved, normal-speed playback results.

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 –

E94602A54-ST

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