PRELIMINARY
PMC-Sierra, Inc.
PM9311/2/3/5 ETT1™ CHIP SET
Data Sheet
PMC-2000164
ISSUE 3
ENHANCED TT1™ SWITCH FABRIC
Figure 58. An ETT1 Port Operating in Sub-port Mode with Four OC-48c Linecards
ETT1 Port board
ETT1 Port board
OC-48c 0
OC-48c 1
OC-48c 2
OC-48c 3
Crossbar
Crossbar
Dataslice 0/1
Dataslice 0/1
Dataslice 0/1
Dataslice 0/1
Dataslice 0/1
Dataslice 0/1
Crossbar
Crossbar
Crossbar
Crossbar
25M cell/s
interface
Scheduler
EPP
Flow Control
Crossbar
152
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE