Datasheet > SY87701V_08

SY87701V_08

更新时间： 2022-09-23 21:18:28

品牌	Logo	应用领域
麦瑞 - MICREL		时钟
页数	文件大小	规格书
15页	145K
描述
5V/3.3V 32-1250Mbps AnyRate CLOCK AND DATA RECOVERY

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SY87701V_08 数据手册

5V/3.3V 32-1250Mbps AnyRate^®

CLOCK AND DATA RECOVERY

SY87701V

Micrel, Inc.

Use lower-power SY87701AL for 3.3V systems

FEATURES

■ 3.3V and 5V power supply options

AnyRate

■ Clock and data recovery from 32Mbps up to

1.25Gbps NRZ data stream, clock generation from

32Mbps to 1.25Gbps

DESCRIPTION

■ Complies with Bellcore, ITU/CCITT and ANSI

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

OC-12, ATM, FDDI, Fibre Channel and Gigabit

Ethernet, as well as proprietary applications

The SY87701V 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.

■ 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

■ 100K ECL compatible I/O

The SY87701V also includes a link fault detection

circuit.

Datasheets and support documentation can be found on

Micrel’s web site at: www.micrel.com.

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

packages (28-pin SOIC is available, but not

recommended for new designs, see page 2 for

details

APPLICATIONS

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

■ Fibre Channel, Escon, SMPTE 259

■ 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

(TTL)

PHASE/

FREQUENCY

DETECTOR

CHARGE

PUMP

VCO

TCLKP

(PECL)

TCLKN

DIVIDER

BY 8, 10, 16, 20

CCA

CCO

SY87701V

GND

DIVSEL 1/2

(TTL)

FREQSEL 1/2/3

(TTL)

PLLS P/N

CLKSEL

(TTL)

AnyRate is a registered trademark of Micrel, Inc.

Rev.: O

Amendment:/0

M9999-073008

hbwhelp@micrel.com or (408) 955-1690

Issue Date: July 2008

12 3 4 5 6 7...15

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