Released
Data Sheet
PMC-2000164
ISSUE 3
PMC-Sierra, Inc.
PM9311/2/3/5 ETT1™ CHIP SET
ENHANCED TT1™ SWITCH FABRIC
PM9311/2/3/5
Enhanced TT1 Chip Set
Enhanced TT1 Switch Fabric
Datasheet
Issue 3: August 2001
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
Released
Data Sheet
PMC-2000164
ISSUE 3
PMC-Sierra, Inc.
PM9311/2/3/5 ETT1™ CHIP SET
ENHANCED TT1™ SWITCH FABRIC
This document is the proprietary and confidential information of PMC-Sierra Inc. Access to this information
does not transfer or grant any right or license to use this intellectual property. PMC-Sierra will grant such
rights only under a separate written license agreement.
Any product, process or technology described in this document is subject to intellectual property rights
reserved by PMC-Sierra, Inc.and are not licensed hereunder. Nothing contained herein shall be construed
as conferring by implication, estoppel or otherwise any license or right under any patent or trademark of
PMC-Sierra, Inc.or any third party. Except as expressly provided for herein, nothing contained herein shall
be construed as conferring any license or right under any PMC-Sierra, Inc.copyright.
Each individual document published by PMC-Sierra, Inc. may contain additional or other proprietary
notices and/or copyright information relating to that individual document.
THE DOCUMENT MAY CONTAIN TECHNICAL INACCURACIES OR TYPOGRAPHICAL ERRORS.
CHANGES ARE REGULARLY MADE TO THE INFORMATION CONTAINED IN THE DOCUMENTS.
CHANGES MAY OR MAY NOT BE INCLUDED IN FUTURE EDITIONS OF THE DOCUMENT.
PMC-SIERRA, INC.OR ITS SUPPLIERS MAY MAKE IMPROVEMENTS AND/OR CHANGES IN THE
PRODUCTS(S), PROCESS(ES), TECHNOLOGY, DESCRIPTION(S), AND/OR PROGRAM(S)
DESCRIBED IN THE DOCUMENT AT ANY TIME.
THE DOCUMENT IS PROVIDED "AS IS" WITHOUT WARRANTY OF ANY KIND, EITHER EXPRESS OR
IMPLIED, INCLUDING BUT NOT LIMITED TO ANY IMPLIED WARRANTY OR MERCHANTABILITY,
FITNESS FOR A PARTICULAR PURPOSE, OR NON-INFRINGEMENT.
ETT1, Enhanced TT1, TT1, and LCS are trademarks of PMC-Sierra, Inc.
© 2000
PMC-Sierra, Inc.
8555 Baxter Place
Burnaby BC Canada V5A 4V7
Phone: (604) 415-6000 FAX: (604) 415-6200
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
Released
Data Sheet
PMC-2000164
ISSUE 3
PMC-Sierra, Inc.
PM9311/2/3/5 ETT1™ CHIP SET
ENHANCED TT1™ SWITCH FABRIC
Device Part Numbers
This document contains information on the ETT1
TM
Chip Set, available from PMC-Sierra, Inc. The following
devices comprise the ETT1 Chip Set:
Device Name
Scheduler
Crossbar
Dataslice
Enhanced Port Processor
PMC Part Number
PM9311-UC
PM9312-UC
PM9313-HC
PM9315-HC
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
Released
Data Sheet
PMC-2000164
ISSUE 3
PMC-Sierra, Inc.
PM9311/2/3/5 ETT1™ CHIP SET
ENHANCED TT1™ SWITCH FABRIC
Revision History
Issue Number
1
2
Issue Date
March 2000
July 2000
Creation of document
Added HSTL Power Dissipation values, corrected programming
constraints for EPP, added OOB, JTAG and PLL blocks to device
dataflow diagrams, added heat sink information to Characteristics
section, corrected EPP register section, corrected Frame Format
tables, added correct bit definition for EPP Interrupt register,
corrected diagram in Appendix C, added send and receive
procedure for control packets, added ESOBLCP register
explanation, corrected conditions in Table 57, corrected Scheduler
Refresh Procedure, added new drawing for Crossbar data flow,
corrected token explanation, corrected Figures 36 and 37,
corrected spelling and formatting errors throughout document.
Removed bit 17 from Scheduler Status Register, updated BP_FIFO
information in Scheduler Control and Reset Register, corrected
bottom view drawings for Scheduler and Crossbar, corrected signal
description section in Scheduler and Crossbar for power pins,
corrected tper3, and tpl3 in AC Electrical, added memory address
information in EPP registers, corrected mechanical drawings,
updated state diagram in Scheduler, added information about
Scheduler PLL timing, updated initialization sequence for all chips,
corrected Dataslice Signal Description for ibpen0, added bit 14(13th
and 14th Dataslice enable) to EPP Control register, updated TDM
constraints, added Output TDM Queue Overflow to the EPP’s
Interrupt register, updated EPP Output Backpressure /
Unbackpressure Threshold register, updated LCS2 link
synchronization in appendix, modified EPP Egress Control Packet
Data Format table, Modified ETT1 usage of LCS2 protocol section
Details Of Change
3
August 2001
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
Released
Data Sheet
PMC-2000164
ISSUE 3
PMC-Sierra, Inc.
PM9311/2/3/5 ETT1™ CHIP SET
ENHANCED TT1™ SWITCH FABRIC
1
Functional Description . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.1
Overview . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
1.1.1
1.1.2
1.1.3
1.1.4
ETT1 Switch Core Features . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 15
The Switch Core Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 16
The LCS Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17
The OOB (Out-Of-Band) Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1.2
Architecture and Features. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 18
1.2.1
1.2.2
1.2.3
1.2.4
1.2.5
1.2.6
1.2.7
1.2.8
1.2.9
ETT1 Switch Core . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Basic Cell Flow . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Prioritized Best-effort Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
End-to-End Flow Control . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TDM Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Subport Mode (2.5 Gbit/s Linecards) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LCS Control Packets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Redundancy . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
System Configuration Options . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
18
19
21
22
22
23
24
25
28
1.3
Prioritized Best-Effort Queue Model . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 30
1.3.1
1.3.2
1.3.3
1.3.4
1.3.5
1.3.6
1.3.7
Unicast Traffic (OC-192). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multicast Traffic (OC-192) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Unicast Traffic (Subport Mode). . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Multicast Traffic (subport mode) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Combinations of OC-192c and Quad OC-48c Linecards . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Summary . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
The LCS Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
31
31
33
46
49
50
51
1.4
1.5
Explicit Backpressure From oEPP to iEPP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 52
1.4.1
Flow Control Crossbar Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
TDM Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 54
1.5.1
1.5.2
1.5.3
1.5.4
1.5.5
1.5.6
TDM Queues . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TDM Reservation Tables . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TDM Frame Timing. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
TDM Synchronization . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Configuring the TDM Service . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Changing the Source of the Suggested Sync. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
54
55
59
59
62
63
1.6
ETT1 Usage of the LCS Protocol . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 64
1.6.1
1.6.2
1.6.3
1.6.4
1.6.5
LCS Protocol Prepend . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Use of Label and Type Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Control Packets . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
Use of CRC Fields . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
LCS PHY Layer . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
64
67
69
73
75
1.7
The Out-of-Band (OOB) Bus Interface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 77
1.7.1
The OOB Bus . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 78
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
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