preliminary 20g narrowband switch element PM8620 nse-20g pmc-2000171 (p4) proprietary and confidential to pmc - sierra, inc., and for its customers? internal use ? copyright pmc - sierra, inc. 2001. overview the PM8620 nse-20g is a monolithic cmos integrated circuit that performs ds0 and above granularity space (cross bar ) switching on 32 full duplex sts-12 streams. the device provides 20gb/s (258,048 ds0s, 10,752 t1s/vt1.5s, 8064 e1s/vt2s, 384 ds3s/e3s) switching. the nse-20g can be combined in appli- cations with the pm5372 tse and pm5310 tbs devices from the pmc chess? product family and with the pm8610 sbs and pm8611 sbslite. features supports 32 sts-12 equivalent serial ports via 777.6mhz, 8b/10b encoded lvds links. each port can be either serial telecombus or serial sbi336s. in sbi mode, switches ds0 or nxds0 for all t1 and e1 tributaries and aggregate columns for switching t1, e1, vt1.5, vt2, ds3 and e3 tributaries. the nse-20g can be used with the companion sbs devices to implement a switch fabric scaleable to 20gb/s. in telecombus, switches vt1.5, vt2, or sts-1 tributaries. supports switching of arbitrary non- standard octet aggregates. supports unicast, multicast, and broadcast for all switching modes. supports full-duplex, in-band communication channels from the nse to each sbs or sbslite device. these channels can be used to initialize and control the sbs's for fabric monitoring and maintenance. supports "1+1" or "1:n" fabric redundancy in conjunction with the sbs? or sbslite? devices. supports two sets of switch settings and a controlled method of changing settings on sts-12 frame boundaries. physical characteristics supports an ieee p1149.1 jtag test port. provides 32-bit microprocessor bus interface for configuration, control and status monitoring. low power 1.8 v / 3.3 v 0.18 m cmos technology. available in a high density 480 ball 35 mm x 35 mm ubga. -40c to +85c industrial temperature operation. applications t1/e1 sonet/sdh cross-connects. t1/e1 sonet/sdh add-drop multiplexors. oc-48 multiservice access multiplexors. channelized oc-12/oc-48 any service any port switches. voice gateways. b lock diagram dso crossbar switch (dcb) rn[0] rp[0] rn[31] rp[31] tp[0] tn[0] tp[31 ] tn[31 ] jtag sysclk cmp rc1fp clock synthesis units (2) microprocessor interface lvds receiver, data recovery unit, receive decoder and in-band link controller lvds receiver, data recovery unit, receive decoder and in-band link controller lvds transmitter, transmit serializer, transmit encoder and in-band link controller lvds transmitter, transmit serializer, transmit encoder and in-band link controller tx ref
head office: pmc-sierra, inc. 8555 baxter place burnaby, b.c. v5a 4v7 canada tel: 604.415.6000 fax: 604.415.6200 20g narrowband switch element to order documentation, send email to: document@pmc-sierra.com or contact the head office, attn: document coordinator all product documentation is available on our web site at: http://www.pmc-sierra.com for corporate information, send email to: info@pmc-sierra.com pmc-2000171 (p4) ? copyright pmc-sierra, inc. 2001. all rights reserved. chess, sbs, sbslite, spectra, temux, freedm, aal1gator. any-phy and pmc- sierra are registered trademarks of pmc-sierra, inc. proprietary and confidential to pmc-sierra, inc., and for its customers? internal use preliminary PM8620 nse-20g c hannelized oc-48/4xoc-12 asap telecombus sbi bus sbi bus any-phy serdes oc-48 pm5315 spectra 2488 pm8611 sbslite pm8611 sbslite pm8611 sbslite pm8316 temux-84 pm8316 temux-84 pm8316 temux-84 pm8316 temux-84 pm7388 freedm-336 pm7388 freedm-336 pm73122 aal1gator-32 pm7341 s/uni ima-84 pm8611 sbslite pm8611 sbslite pm8610 sbs pm8610 sbs pm8611 sbslite PM8620 nse-20g PM8620 nse-20g working protect n xoc-48 adm with chess tm chip set telecombus serdes oc-48 pm5310 tbs pm5372 tse pm5315 spectra 2488 serdes oc-48 pm5310 tbs pm5372 tse pm5315 spectra 2488 pm5310 tbs pm5310 tbs PM8620 nse-20g telecombus working protect sbi bus telecombus telecombus pm4318 octliu pm4318 octliu pm4318 octliu pm4318 octliu pm5366 temap-84 pm8611 sbslite t1/e1/j1 PM8620 nse-20g pm5363 tupp+622 pm8611 sbslite working protect typical applications
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