Datasheet > LC78637E

LC78637E

更新时间： 2023-12-18 00:00:00

品牌	Logo	应用领域
安森美 - ONSEMI		商用集成电路
页数	文件大小	规格书
20页	189K
描述
IC,CD-PLAYER PROCESSOR/CONTROLLER,CMOS,QFP,80PIN,PLASTIC

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中文翻译

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技术参数
数据手册

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LC78637E 技术参数

生命周期：	Obsolete	包装说明：	QFP, QFP80,.68SQ
Reach Compliance Code：	compliant	风险等级：	5.69
商用集成电路类型：	CONSUMER CIRCUIT	JESD-30 代码：	S-PQFP-G80
端子数量：	80	最高工作温度：	70 °C
最低工作温度：	-20 °C	封装主体材料：	PLASTIC/EPOXY
封装代码：	QFP	封装等效代码：	QFP80,.68SQ
封装形状：	SQUARE	封装形式：	FLATPACK
电源：	3.3 V	认证状态：	Not Qualified
子类别：	Other Consumer ICs	表面贴装：	YES
技术：	CMOS	温度等级：	COMMERCIAL
端子形式：	GULL WING	端子节距：	0.635 mm
端子位置：	QUAD	Base Number Matches：	1

LC78637E 数据手册

CMOS IC

LC78637E

for Compact Disc Player Applications

Overview

The LC78637E combines audio CD RF signal processing, servo control, EFM signal processing, audio

signal processing, and a CDTEXT decoder in a single chip, enabling a system to be configured with very

few peripheral components. The RF signal processing block performs such functions as EFM signal

generation, error signal generation, and laser power control. The servo control block carries out A/D

conversion of focus error and tracking error signals from the RF signal processing block, and digitally

performs focus, tracking, sled, and spindle servo processing necessary for CD servo operation. The

functions of the EFM signal processing block cover EFM signal demodulation and synchronization

detection, protection, and interpolation, de-interleaving, and error detection and correction. The audio signal

processing block handles data interpolation/mute processing based on the error correction situation, and

incorporates an 8X over sampling filter, 1-bit DAC, and secondary LPF (differential amplifier). The status

and characteristics of each function block can be set, or ascertained by data reads, via the microcomputer

interface.

Playback functions

— Playback speed: 1X speed, 2X speed

— Jitter-free playback (VCEC)

— CD-R/W: 1X speed, 2X speed

— Simple CLV playback

RF processing block

— RF system: AGC, CD-R, R/W playback supported, peak hold, bottom hold

— Error system: Variable-balance TE signal generation, FE signal generation

— Detection: Track counting signal, jitter, flaws (black, mirror)

— Laser power control

— DC offset voltage cancellation

Servo control block

— Digital processing of tracking, focus, sled, and spindle servos

— Automatic adjustment functions: Focus gain, focus bias, focus offset, tracking gain, tracking offset,

tracking balance

— Use of Sanyo’s original high-performance servo control technology* to improve playability, covering

external vibration and playback of warped or eccentric discs

— Shock detection

— Interruption detection

* Robust control technology developed by Sanyo, offering remarkable ability to suppress vibration

and shocks, and to achieve tracking of warped or eccentric discs

EFM processing block

— Error detection and correction

— Built-in text decoder

(C1 = twofold, C2 = fourfold/twofold)

— EFM signal synchronization detection,

— Jitter margin: ± 13 frames

— DOUT output

protection, interpolation

Audio processing block

— Interpolation (4 interpolations)

— Digital attenuator

— Fadeout function

— Bilingual function

— Built-in de-emphasis filter

— Built-in secondary LPF for audio output

— DF and DAC clocks can be supplied externally

— 1-bit DAC (tertiary ∆ Σ noise shaper system)

— Built-in 8X oversampling digital filter

12 3 4 5 6 7...20

中文翻译

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与LC78637E相关器件

型号	品牌	获取价格	描述	数据表
LC7863KA	SANYO	获取价格	DIGITAL SIGNAL PROCESSOR FOR COMPACT DISC PLAYERS
LC78641E	ETC	获取价格	CD-Player Processor/Controller
LC78646E	SANYO	获取价格	CMOS LSI
LC7864KE	ETC	获取价格
LC7865E	SANYO	获取价格	Digital Signal Processor for Compact Disc Players
LC7867	SANYO	获取价格	Digital Signal Processor for Compact Disc Players
LC7867E	SANYO	获取价格	Digital Signal Processor for Compact Disc Players
LC786800E	SANYO	获取价格	Compressed Audio signal Processor IC with USB host controller
LC786800E-H	ONSEMI	获取价格	SPECIALTY CONSUMER CIRCUIT, PQFP100, 14 X 20 MM, HALOGEN AND LEAD FREE, QIP-100
LC78681E	SANYO	获取价格	Digital Signal Processor for Compact Disc Players

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