Datasheet > LC78622NE

LC78622NE

更新时间： 2024-01-24 16:01:15

品牌	Logo	应用领域
三洋 - SANYO		/
页数	文件大小	规格书
31页	325K
描述
Compact Disc Player DSP

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中文翻译

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技术参数
数据手册

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LC78622NE 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
零件包装代码：	QFP	包装说明：	QFP,
针数：	64	Reach Compliance Code：	unknown
风险等级：	5.9	地址总线宽度：
桶式移位器：	NO	边界扫描：	NO
外部数据总线宽度：		格式：	FIXED POINT
内部总线架构：	MULTIPLE	JESD-30 代码：	S-PQFP-G64
JESD-609代码：	e0	长度：	14 mm
低功率模式：	NO	端子数量：	64
最高工作温度：	75 °C	最低工作温度：	-20 °C
封装主体材料：	PLASTIC/EPOXY	封装代码：	QFP
封装形状：	SQUARE	封装形式：	FLATPACK
峰值回流温度（摄氏度）：	NOT SPECIFIED	认证状态：	Not Qualified
座面最大高度：	3 mm	最大供电电压：	5.5 V
最小供电电压：	3.6 V	标称供电电压：	5 V
表面贴装：	YES	技术：	CMOS
温度等级：	COMMERCIAL EXTENDED	端子面层：	Tin/Lead (Sn/Pb)
端子形式：	GULL WING	端子节距：	0.8 mm
端子位置：	QUAD	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	14 mm	uPs/uCs/外围集成电路类型：	DIGITAL SIGNAL PROCESSOR, OTHER
Base Number Matches：	1

LC78622NE 数据手册

Ordering number : EN6015

CMOS IC

LC78622NE

Compact Disc Player DSP

signal generated from the playback clock and the

reference clock

• Frame synchronization signal detection, protection and

interpolation to assure stable data readout

• EFM signal demodulation and conversion to 8-bit

symbol data

• Subcode data separation from the EFM demodulated

signal and output of that data to an external

microprocessor

• Subcode Q signal output to a microprocessor over the

serial I/O interface after performing a CRC error check

(LSB first)

• Demodulated EFM signal buffering in internal RAM to

handle up to ±4 frames of disk rotational jitter

• Demodulated EFM signal reordering in the prescribed

order for data unscrambling and de-interleaving

• Error detection, correction, and flag processing (error

correction scheme: dual C1 plus dual C2 correction)

• Sets the C2 flags based on the C1 flags and a C2 check,

and then performs signal interpolation or muting

depending on the C2 flags. The interpolation circuit uses

a dual-interpolation scheme. The previous value is held

if the C2 flags indicate errors two or more times

consecutively.

Overview

The LC78622NE is a CMOS IC that implements the

signal processing and servo control required by compact

disc players. At the same time as providing an EFM PLL

circuit, a 1-bit D/A converter, and an analog low-pass

filter the LC78622NE realizes an optimal cost-

performance tradeoff for low-end players by strictly

limiting functionality to basic signal-processing and servo

system functionality. The LC78622NE signal-processing

system provides demodulation of the EFM signal from the

pickup, de-interleaving, error detection and correction, and

digital filters that can prove useful in reducing the cost of

end products. The LC78622NE servo control system

processes servo commands sent from the control

microprocessor.

The LC78622NE is an improved version of the LC78622E

that adds 8× oversampling digital filters, three general-

purpose output ports (that also have specific shared

functions) and the PCCL pin (pin 34). However, some

handling of general-purpose ports differ from that of the

LC78622E, therefore care must be taken.(Refer to pages

16 and 21).

• Support for command input from a control

microprocessor: commands include track jump, focus

start, disk motor start/stop, muting on/off and track

count (8 bit serial input)

• Built-in digital output circuits.

• Arbitrary track counting to support high-speed data

access

• D/A converter outputs with data continuity improved by

8× oversampling digital filters.

• Built-in third-order ∑∆ D/A converters (An analog low-

pass filter is built in.)

Functions

• Input signal processing: The LC78622NE takes an HF

signal as input, digitizes (slices) that signal at a precise

level, converts that signal to an EFM signal, and

generates a PLL clock with an average frequency of

4.3218 MHz by comparing the phases of that signal and

an internal VCO.

• Precise reference clock and necessary internal timing

generation using an external 16.9344 MHz crystal

oscillator

• Disk motor speed control using a frame phase difference

Any and all SANYO products described or contained herein do not have specifications that can handle

applications that require extremely high levels of reliability, such as life-support systems, aircraft’s

control systems, or other applications whose failure can be reasonably expected to result in serious

physical and/or material damage. Consult with your SANYO representative nearest you before using

any SANYO products described or contained herein in such applications.

SANYO assumes no responsibility for equipment failures that result from using products at values that

exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or other

parameters) listed in products specifications of any and all SANYO products described or contained

herein.

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN

11999RM (OT) No. 6015-1/31

12 3 4 5 6 7...31

中文翻译

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与LC78622NE相关器件

型号	品牌	获取价格	描述	数据表
LC78624E	SANYO	获取价格	Compact Disc Player DSP
LC78625	SANYO	获取价格	Compact Disc Player DSP
LC78625E	SANYO	获取价格	Compact Disc Player DSP
LC78626	SANYO	获取价格	DSP for Compact Disk Players
LC78626E	SANYO	获取价格	DSP for Compact Disk Players
LC78626KE	SANYO	获取价格	CMOS LSI
LC78628	SANYO	获取价格	Compact Disc Player DSP with Built-in HDCD Decoder
LC78628E	SANYO	获取价格	Compact Disc Player DSP with Built-in HDCD Decoder
LC7863	SANYO	获取价格	DIGITAL SIGNAL PROCESSOR FOR COMPACT DISC PLAYERS
LC78630	SANYO	获取价格	Compact Disk Player DSP

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