Released
Datasheet
PM73487 QRT
PMC-Sierra, Inc.
PMC-980618
Issue 3
622 Mbps ATM Traffic Management Device
622 Mbps
622 Mbps
622 Mbps
Port Card #1
Rx Input
Port Card #1
Tx Output
Switch Card #17
Stage 1 QSE
Switch Card #17
Stage 3 QSE
622 Mbps
Port Card #8
Rx Input
Port Card #8
Tx Output
x2
x2
Switch Card #1
Switch Card #2
Switch Card #16
Figure 10. 5 Gbps ATM Switch
Figure 10 shows a 5 Gbps ATM switch using 8 port cards (8 QRTs) and 17 switch cards (34
QSEs). The middle stage is composed of 16 switch cards. The 5 Gbps bandwith is achieved by
adding switch card #17 (which is depicted using two boxes: one stage 1 QSE and one stage 3
QSE), and eight port cards (each of which is depicted using two boxes: one for the Rx input side,
and one for the Tx output side). Lines between stage 1 and stage 2, and stage 2 and stage 3 switch
cards represent two sets of wires, one to each of the QSEs in the middle stage switch cards.
10
PMC [ PMC-SIERRA, INC ]
