XRT71D00

 JULY 2000 XRT71D00 REV. 1.01 E3/DS3/STS-1 JITTER ATTENUATOR,STS-1 TO DS3 DESYNCHRONIZER GENERAL DESCRIPTION The XRT71D00 is a single channel, single chip Jitter Attenuator, that meets the Jitter requirements specified in the ETSI TBR-24, Bellcore GR-499 and GR253 standards. In addition, the XRT71D00 also meets the Jitter and Wander specifications described in the ANSI T1.105.03b 1997, Bellcore GR-253 and GR-499 standards for Desynchronizing and Pointer adjustments in the DS3 to STS-SPE mapping applications. FEATURES Meets the E3/DS3/STS-1 jitter requirements No external components required Compliance with jitter transfer template outlined in ITU G.751, G.752, G.755 and GR-499-CORE,1995 standards BLOCK DIAGRAM OF THE XRT71D00 Meets output jitter requirement as specified by ETSI TBR24 Meets the Jitter and Wander specifications described in T1.105.03b,GR-253 and GR-499 standards. Selectable buffer size of 16 and 32 bits Jitter attenuator can be disabled Available in a 32 pin TQFP package. Single 3.3V or 5.0V supply. Operates over - 400 C to 850 C temperature range. APPLICATIONS E3/DS3 Access Equipment. STS-SPE to DS3 Mapper DSLAMs BW S M C lk T im in g C on tro l B lo c k / P h a s e lo c k ed L oo p IC T DJA R C lk C lk E S RPOS RNEG W rite C lock R ead C lock R R C lk RRPO S 1 6 /3 2 B it F IF O RRNEG FL H O S T/H W RST D S 3/E 3 M ic ro p ro c es s o r S e ria l In te rfa ce CS SDI SDO S C lk Exar Corporation 48720 Kato Road, Fremont C...