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SY87701ALZI Datasheet(PDF) 1 Page - Micrel Semiconductor |
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SY87701ALZI Datasheet(HTML) 1 Page - Micrel Semiconductor |
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1 / 15 page  SY87701AL 1 Micrel, Inc. M9999-082107 hbwhelp@micrel.com or (408) 955-1690 DESCRIPTION FEATURES SY87701AL s Industrial temperature range (–40 °C to +85°C) s 3.3V power supply s Clock and data recovery from 28Mbps up to 1.3Gbps NRZ data stream, clock generation from 28Mbps to 1.3Gbps 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 Lower power: fully compatible with Micrel's SY87701V, but with 30% less power s Available in 32-pin EPAD-TQFP and 28-pin SOIC packages (28-pin SOIC is available, but NOT recommended for new designs.) The SY87701AL is a complete Clock Recovery and Data Retiming integrated circuit for data rates from 28Mbps up to 1.3Gbps 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 SY87701AL also includes a link fault detection circuit. All support documentation can be found on Micrel’s web site at: www.micrel.com. 3.3V 28Mbps to 1.3Gbps AnyRate® Clock and Data Recovery 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 1.3Gbps 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 SY87701AL 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 AnyRate is a registered trademark of Micrel, Inc. Rev.: G Amendment: /0 Issue Date: August 2007 |
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