Datasheet > CR3475

CR3475

更新时间： 2024-01-15 11:36:45

品牌	Logo	应用领域
凌云 - CIRRUS		商用集成电路
页数	文件大小	规格书
4页	133K
描述
Consumer Circuit, PQFP176

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技术参数
数据手册

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CR3475 技术参数

生命周期：	Obsolete	包装说明：	QFP,
Reach Compliance Code：	unknown	HTS代码：	8542.39.00.01
风险等级：	5.84	商用集成电路类型：	CONSUMER CIRCUIT
JESD-30 代码：	R-PQFP-G176	功能数量：	1
端子数量：	176	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
表面贴装：	YES	端子形式：	GULL WING
端子位置：	QUAD	Base Number Matches：	1

CR3475 数据手册

CL-CR3470/CR3475

Product Bulletin

FEATURES

General

ATAPI CD-R/RW

Encoder/Decoder

— Single-chip integration of CD-ROM decoder,

CD-ROM encoder, CIRC encoder, EFM modulator,

ATIP decoder, buffer manager, and interface to SCSI

protocol ICs

— DVD port (CL-CR3475 only)

— Highly automated and high-performance CD-Record-

able formatter

OVERVIEW

The CL-CR3470 and CL-CR3475 are single-chip, high-

performance, highly integrated ATAPI interface devices

for the CD-R/RW (CD-Recordable/CD-Rewritable) mar-

ket. The CL-CR3470/CR3475 integrates CD-ROM

decoder, CIRC encoder, EFM modulation, ATIP

decoder, buffer manager, and ATAPI interface logic. In

addition to its CD-Rewritable capability, the CL-CR3475

features a DVD port enabling drive manufacturers to

develop a drive that reads DVD, CD-ROM, CD-R, and

CD-RW.

— High-performance CD-ROM decoder

— Designed for easy and efﬁcient ﬁrmware

programming

— High-performance built-in ATAPI interface

— Fully compatible with the ATAPI Speciﬁcation

SFF-8020

— Automatic power-down interfaces when idle

— 144- and 176-pin LQFP packages available

— Built-in clock synthesizer

■ CD-ROM Decoder

The CL-CR3470/CR3475 supports up to 40x read and

10x record disc speeds, allowing customers to preserve

all CD-R/E encode/decode electronics and ﬁrmware as

the disc speed requirements increase. All write

methods are supported by the CL-CR3470/CR3475

disc-at-once, track-at-once, packet recording, and

— Supports CD-ROM, CD-I, and CD-DA (CD-Digital

Audio) formats

— Supports various compact disc DSP (digital signal

processor) controllers

— Supports disc speeds up to 65-MHz MCLK

— CD speeds up to 40x

(cont.)

SystemandFunctional

Block Diagram

LOCAL MICROCONTROLLER

ROM/RAM

CL-CR3470/CR3475

MICROCONTROLLER

INTERFACE

DVD

PORT

CD-ROM

DSP

DECODER

CD-ROM

ENCODER

CIRC

ENCODER

ATAPI

BUS

ATAPI BUS

INTERFACE

WRITE

STRATEGY

EFM

MODULATOR

CD-RW

FORMATTER

CD-RW

ATIP

DECODER

BUFFER

MANAGER

ADB

DAC

SERVO

CONTROLLER

ECC

BUFFER MEMORY

July 1998

12 3 4

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