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SY87701VZC Datasheet

  • SY87701VZC

  • 5V/3.3V 32-1250Mbps AnyRate⑩ CLOCK AND DATA RECOVERY

  • 12頁

  • MICREL   MICREL

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5V/3.3V 32-1250Mbps AnyRate鈩?/div>
CLOCK AND DATA RECOVERY
FEATURES
s
3.3V and 5V power supply options
s
Clock and data recovery from 32Mbps up to
1.25Gbps NRZ data stream
s
Complies with Bellcore, ITU/CCITT and ANSI
specifications for applications such as OC-1, OC-3,
OC-12, ATM, FDDI, etc.
s
Two on-chip PLLs: one for clock generation and
another for clock recovery
s
Selectable reference frequencies
s
Differential PECL high-speed serial I/O
s
Line receiver input: no external buffering needed
s
Link fault indication
s
100K ECL compatible I/O
s
Available in 28-pin SOIC and 32-pin EP-TQFP
packages
SY87701V
DESCRIPTION
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.
The SY87701V also includes a link fault detection
circuit.
APPLICATIONS
s
s
s
s
SONET/SDH/ATM OC-1, OC-3, OC-12, OC-24
Fibre Channel, Escon
Gigabit Ethernet/Fast Ethernet
Proprietary architecture up to 1.25Gbps
BLOCK DIAGRAM
PLLR P/N
RDOUTP
(PECL)
RDOUTN
RCLKP
(PECL)
RCLKN
RDINP
(PECL)
RDINN
PHASE
DETECTOR
0
1
PHASE/
FREQUENCY
DETECTOR
LINK
FAULT
DETECTOR
CHARGE
PUMP
VCO
CD
(PECL)
REFCLK
(TTL)
LFIN
(TTL)
PHASE/
FREQUENCY
DETECTOR
CHARGE
PUMP
VCO
1
0
TCLKP
(PECL)
TCLKN
V
CC
V
CCA
V
CCO
GND
DIVIDER
BY 8, 10, 16, 20
SY87701V
DIVSEL 1/2
(TTL)
PLLS P/N
FREQSEL 1/2/3
(TTL)
CLKSEL
(TTL)
AnyRate鈩?is a trademark of Micrel, Inc.
Rev.: H
Amendment: /0
1
Issue Date: September 2000

SY87701VZC 產(chǎn)品屬性

  • 27

  • 集成電路 (IC)

  • 時鐘/計時 - 專用

  • AnyRate®

  • 時鐘和數(shù)據(jù)恢復（CDR），多路復用器

  • 是

  • 以太網(wǎng)，SONET/SDH，ATM 應用

  • PECL

  • PECL

  • 1

  • 1:3

  • 是/是

  • 1.25Gbps

  • 3.15 V ~ 5.25 V

  • 0°C ~ 85°C

  • 表面貼裝

  • 28-SOIC（0.295"，7.50mm 寬）

  • 28-SOIC

  • 管件

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