Datasheet > LC78621E

LC78621E

更新时间： 2024-09-21 22:37:07

品牌	Logo	应用领域
三洋 - SANYO		/
页数	文件大小	规格书
34页	414K
描述
Compact Disc Player DSP

阅读下载

中文翻译

获取价格

技术参数
数据手册

如果您发现信息不准确，欢迎纠错

LC78621E 技术参数

生命周期：	Obsolete	零件包装代码：	QFP
包装说明：	QFP,	针数：	80
Reach Compliance Code：	unknown	风险等级：	5.84
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：	R-PQFP-G80	长度：	20 mm
低功率模式：	NO	端子数量：	80
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：	RECTANGULAR	封装形式：	FLATPACK
认证状态：	Not Qualified	座面最大高度：	2.8 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
端子形式：	GULL WING	端子节距：	0.8 mm
端子位置：	QUAD	宽度：	14 mm
uPs/uCs/外围集成电路类型：	DIGITAL SIGNAL PROCESSOR, OTHER	Base Number Matches：	1

LC78621E 数据手册

Ordering number : EN*5223

CMOS LSI

LC78621E

Compact Disc Player DSP

Preliminary

Overview

• 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

• Zero cross muting

• Supports the implementation of a double-speed dubbing

function.

• D/A converter outputs with data continuity improved by

8× oversampling digital filters. (These filters function as

4× oversampling filters during double-speed playback.)

• Built-in third-order ∑∆ D/A converters (PWM output)

• Built-in digital attenuator (8 bits – alpha, 239 steps)

• Built-in digital de-emphasis

The LC78621E is a CMOS LSI that implements the signal

processing and servo control required by compact disk

players, laser disks, CD-V, CD-I and related products. The

LC78621E provides several types of signal processing,

including demodulation of the optical pickup EFM signal,

de-interleaving, error detection and correction, and digital

filters that can help reduce the cost of CD player units. It

also processes a rich set of servo system commands sent

from the control microprocessor. It also incorporates an

EFM-PLL circuit and a one-bit D/A converter.

Functions

• Input signal processing: The LC78621E 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.

• Built-in digital level and peak meter functions

• Support for bilingual applications

Features

• 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

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

• 80-pin QIP (miniature, reduced space package)

• Silicon gate CMOS process (for low power)

• 5 V single-voltage power supply (for use in portable

products)

Package Dimensions

unit: mm

3174-QFP80E

[LC78621E]

• 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

• 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)

• The LC78620E 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 quadruple interpolation scheme. The

output value converges to the muting level when four or

more consecutive C2 flags occur.

SANYO: QIP80E

SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters

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

83095HA (OT) No. 5223-1/34

12 3 4 5 6 7...34

中文翻译

下载PDF

与LC78621E相关器件

型号	品牌	获取价格	描述	数据表
LC78622E	SANYO	获取价格	Compact Disc Player DSP
LC78622NE	SANYO	获取价格	Compact Disc Player DSP
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

与LC78621E相关文章

摩尔斯微电子在美国约书亚树国家公园测试 Wi-Fi HaLow
2024-09-18

73
贸泽上架Tallysman TW5386智能GNSS天线
2024-09-18

65
SL74HC10N：高性能三输入与非门解析
2024-09-03

149
AIC1781A 电池充电控制器深度解析
2024-09-03

131

产品中心

服务支持

精选活动

关于我们

帮助中心

LC78621E

LC78621E 技术参数

LC78621E 数据手册

与LC78621E相关器件

与LC78621E相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

LC78621E

LC78621E 技术参数

LC78621E 数据手册

与LC78621E相关器件

与LC78621E相关文章

您还可以找

您在本页遇到什么问题？