VSC8124

www.DataSheet4U.com VITESSE SEMICONDUCTOR CORPORATION Target Specification VSC8124 Features Four Channel 2.488 Gb/s Data Recovery SONET Quality Jitter Tolerance Fastlock Data Acquisition less than 200 Bit Times Loss of Signal Indicators Long Strings of Static Data Tolerated by the Clock Recovery Circuit without Loss of Signal First Order Clock Recovery Loop Minimizes Jitter Accumulation 2.488 Gb/s Quad Data Re-timer Differential on Chip Terminated Serial Data I/O Bypass for OC3, OC12 Data Rates 155.52 MHz Reference Clock Frequency 3.3V Supply Operation 14 x 14mm, 100 Pin Thermally Enhanced TQFP Package General Description The VSC8124 is a four channel, 2.5 Gb/s data re-timer for cleaning up data downstream of optical links or cross point switches. Serial data at the 2.5 Gb/s rate is independently re-timed on four channels, and driven differentially by CML drivers. The re-timing function on each channel can be individually bypassed for lower rate signals or test purposes. The VSC8124 provides four independent loss of signal indicators in the event of loss of synchronous data transitions. G52271-0, Rev. 1.14 2/23/00 © VITESSE SEMICONDUCTOR CORPORATION 741 Calle Plano, Camarillo, CA 93012 805/388-3700 FAX: 805/987-5896 Page 1 VITESSE SEMICONDUCTOR CORPORATION 2.488 Gb/s Quad Data Re-timer Target Specification VSC8124 VSC8124 Block Diagram SD3+ CML SD3RTBYP3 TTL 1 0 CML RDAT3+ RDAT3- RDAT2+ LOSREL TTL RTBYP2 TTL SD2+ CML SD2REFCK0+ P...