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SY87701VZC Datasheet(PDF) 1 Page - Micrel Semiconductor |
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SY87701VZC Datasheet(HTML) 1 Page - Micrel Semiconductor |
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1 / 15 page  SY87701V 1 Micrel, Inc. M9999-073008 hbwhelp@micrel.com or (408) 955-1690 DESCRIPTION FEATURES s 3.3V and 5V power supply options s Clock and data recovery from 32Mbps up to 1.25Gbps NRZ data stream, clock generation from 32Mbps to 1.25Gbps s 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 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 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 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. Datasheets and support documentation can be found on Micrel’s web site at: www.micrel.com. APPLICATIONS s SONET/SDH/ATM OC-1, OC-3, OC-12, OC-24 s Fibre Channel, Escon, SMPTE 259 s Gigabit Ethernet/Fast Ethernet s Proprietary architecture up to 1.25Gbps PHASE DETECTOR PHASE/ FREQUENCY DETECTOR CHARGE PUMP VCO CHARGE PUMP VCO LINK FAULT DETECTOR DIVIDER BY 8, 10, 16, 20 REFCLK CD RDINN RDINP PLLR P/N CLKSEL RDOUTP RCLKP RCLKN RDOUTN LFIN FREQSEL 1/2/3 PLLS P/N DIVSEL 1/2 SY87701V TCLKP TCLKN VCC VCCA VCCO GND 1 0 (PECL) (PECL) (TTL) (TTL) (PECL) (TTL) (PECL) (PECL) (TTL) (TTL) 0 1 PHASE/ FREQUENCY DETECTOR BLOCK DIAGRAM Rev.: O Amendment: /0 Issue Date: July 2008 AnyRate is a registered trademark of Micrel, Inc. AnyRate® SY87701V 5V/3.3V 32-1250Mbps AnyRate® CLOCK AND DATA RECOVERY Use lower-power SY87701AL for 3.3V systems |
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