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XRT71D00 Datasheet(PDF) 1 Page - Exar Corporation |
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XRT71D00 Datasheet(HTML) 1 Page - Exar Corporation |
1 / 18 page Exar Corporation 48720 Kato Road, Fremont CA, 94538 • (510) 668-7000 • FAX (510) 668-7017 • www.exar.com XRT71D00 E3/DS3/STS-1 JITTER ATTENUATOR,STS-1 TO DS3 DESYNCHRONIZER JULY 2000 REV. 1.01 GENERAL DESCRIPTION The XRT71D00 is a single channel, single chip Jitter Attenuator, that meets the Jitter requirements speci- fied in the ETSI TBR-24, Bellcore GR-499 and GR- 253 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 stan- dards 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 • 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 stan- dards. • 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 BLOCK DIAGRAM OF THE XRT71D00 HO S T /H W RS T DS 3/E 3 16/32 B it FIFO M icroprocessor S e rial In te rfa ce Tim ing C o ntro l B lock / P h ase lo cked Lo op W rite C lock R ead C lock RRClk RRP O S RRNE G FL DJ A RC lk Clk E S RPO S RN EG BW S IC T C S SD I SD O SC lk MC lk |
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