PRELIMINARY
PMC-Sierra, Inc.
PM9311/2/3/5 ETT1™ CHIP SET
Data Sheet
PMC-2000164
ISSUE 3
ENHANCED TT1™ SWITCH FABRIC
3.4.2.57 ITIB Memory
Symbol:
EITIBM
Address Offset: 04000-07FFCh
Default Value: 000000000h
Access:
Read/Write
ITIB memory.
Bits
Description
ITIB Memory. Each entry is a multicast port fanout value, addressed by a12-bit multicast tag.
Note that an all-zero fanout is considered invalid.
31:0
3.4.2.58 Linecard Request Count Memory
Symbol: ESRCTM
Address Offset: 08000-0FFFCh
Default Value: 000000000h
Access:
Read/Write
This memory is addressed by {source_subport, QID}. Each traffic type has a different address and data
format.
For Unicast Traffic: Each request count is 10 bits wide if OC-192c (9:0), 8 bits wide if OC-48(7:0).
Address
Bits
Description
19:15 Must be set to 0x1
14:13 Source Subport
12:11 Must be set to 0x2 for Unicast Traffic type
10:9
8:4
3:2
1:0
Priority
Destination Port
Destination Subport
Must be set to 0
Data
Bits
31:10 Reserved.
9:0 Request Count
Description
198
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
PMC [ PMC-SIERRA, INC ]
