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SY87701LZI

更新时间： 2024-11-12 22:10:03

品牌	Logo	应用领域
麦瑞 - MICREL		时钟
页数	文件大小	规格书
12页	154K
描述
3.3V 32-1250Mbps AnyRate⑩ CLOCK AND DATA RECOVERY

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中文翻译

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数据手册

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SY87701LZI 数据手册

3.3V 32-1250Mbps AnyRate™

CLOCK AND DATA RECOVERY

SY87701L

DESCRIPTION

FEATURES

■ Industrial temperature range (–40°C to +85°C)

■ 3.3V power supply

The SY87701L is a complete Clock Recovery and Data

Retiming integrated circuit for data rates from 32Mbps

up to 1.25Gbps NRZ. The device is ideally suited for

SONET/SDH/ATM and Fibre Channel applications and

other high-speed data transmission systems.

Clock recovery and data retiming is performed by

synchronizing the on-chip VCO directly to the incoming

data stream. The VCO center frequency is controlled by

the reference clock frequency and the selected divide

ratio. On-chip clock generation is performed through the

use of a frequency multiplier PLL with a byte rate source

as reference.

■ Clock and data recovery from 32Mbps up to

1.25Gbps NRZ data stream

■ Complies with Bellcore, ITU/CCITT and ANSI

specifications for applications such as OC-1, OC-3,

OC-12, ATM, FDDI, etc.

■ Two on-chip PLLs: one for clock generation and

another for clock recovery

■ Selectable reference frequencies

■ Differential PECL high-speed serial I/O

■ Line receiver input: No external buffering needed

■ Link fault indication

The SY87701L also includes a link fault detection

circuit.

APPLICATIONS

■ 100K ECL compatible I/O

■ Available in 28-pin SOIC and 32-pin EP-TQFP

■ SONET/SDH/ATM OC-1, OC-3, OC-12, OC-24

■ Fibre Channel, Escon

packages

■ Gigabit Ethernet/Fast Ethernet

■ Proprietary architecture up to 1.25Gbps

BLOCK DIAGRAM

PLLR P/N

RDOUTP

(PECL)

RDINP

(PECL)

RDINN

PHASE

DETECTOR

RDOUTN

RCLKP

(PECL)

CHARGE

PUMP

VCO

RCLKN

PHASE/

FREQUENCY

DETECTOR

LINK

FAULT

DETECTOR

LFIN

(TTL)

(PECL)

REFCLK

PHASE/

FREQUENCY

DETECTOR

CHARGE

PUMP

VCO

(TTL)

TCLKP

(PECL)

TCLKN

V^CC

DIVIDER

BY 8, 10, 16, 20

VCCA

VCCO

GND

SY87701L

DIVSEL 1/2

(TTL)

FREQSEL 1/2/3

(TTL)

PLLS P/N

CLKSEL

(TTL)

AnyRate™ is a trademark of Micrel, Inc.

Rev.: B

Amendment:/0

Issue Date: September2000

12 3 4 5 6 7...12

中文翻译

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