SY87702L

Micrel, Inc. 3.3V 28Mbps-2.5Gbps AnyRate® CLOCK AND DATA RECOVERY SY87702L SY87702L FEATURES ■ 3.3V power supply ■ Complies with Bellcore, ITU/CCITT and ANSI specifications for applications such as OC-1, OC-3, OC-12, OC-48*, and ATM ■ Compatible with FDDI, Gigabit Ethernet, Fibre Channel, 2X Fibre Channel, SMPTE 259 and 292, and proprietary applications ■ Low power ■ Clock and data recovery from 28Mbps up to 2.5Gbps NRZ data stream ■ Selectable reference frequencies via programmable multiplier ■ Differential PECL and CML high-speed serial outputs ■ Line receiver input: no external buffering needed ■ Link fault indication ■ 100K ECL compatible I/O ■ Available in 64-Pin EP-TQFP package ■ Product obsolete. Use SY87721L for new designs DESCRIPTION The SY87702L is a complete Clock Recovery and Data retiming integrated circuit for data rates from 28Mbps up to 2.5Gbps NRZ. The device is ideally suited for SONET/SDH/ ATM, Fibre Channel, and Gigabit Ethernet applications, as well as other high-speed data transmission applications. 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. Onchip clock generation is performed through the use of a frequency multiplier PLL and can be used as a Clock Multiplier Unit (CMU). The integrated CMU can provide this clock signal at the TCLK outputs. Additionally, the TCLK output can ...