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SY87700V

Part Number	SY87700V
Manufacturer	Micrel Semiconductor
Description	CLOCK AND DATA RECOVERY
Published	Sep 24, 2005
Detailed Description	Micrel, Inc. 5V/3.3V 32-175Mbps AnyRate® CLOCK AND DATA RECOVERY SY87700V SY87700V Use lower-power SY87700AL for 3.3V...
Datasheet	SY87700V PDF File

Overview

Micrel, Inc.
5V/3.
3V 32-175Mbps AnyRate® CLOCK AND DATA RECOVERY SY87700V SY87700V Use lower-power SY87700AL for 3.
3V systems FEATURES s 3.
3V and 5V power supply options s SONET/SDH/ATM compatible s Clock and data recovery from 32Mbps up to 175Mbps NRZ data stream, clock generation from 32Mbps to 175Mbps 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 Complies with Bellcore, ITU/CCITT and ANSI specifications such as OC-1, OC-3, FDDI, Fast Ethernet, as well as proprietary applications s 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 AnyRate® DESCRIPTION The SY87700V is a complete Clock Recovery and Data Retiming integrated circuit for data rates from 32Mbps up to 175Mbps NRZ.
The device is ideally suited for SONET/SDH/ATM 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 SY87700V also includes a link fault detection circuit.
Datasheets and support documentation can be found on Micrel’s web site at: www.
micrel.
com.
s SONET/SDH/ATM OC-1/OC-3 s Fast Ethernet s Proprietary architectures up to 175Mbps BLOCK DIAGRAM PLLR P/N RDINP (PECL) RDINN CD (PECL) PHASE DETECTOR PHASE/ FREQUENCY DETECTOR 0 1 CHARGE PUMP VCO LINK FAULT DETECTOR RDOUTP (PECL) RDOUTN RCLKP (PECL) RCLKN LFIN (TTL) REFCLK (TTL) PHASE/ FREQUENCY DETECTOR CHARGE PUMP VCO 1 0 DIVIDER BY 8, 10, 16, 20 DIVSEL 1/2 (TTL) AnyRat...

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