PM4328 View Datasheet(PDF) - PMC-Sierra
Part Name
Description
MFG CO.
'PM4328' PDF : 250 Pages View PDF
STANDARD PRODUCT
DATASHEET
PMC-2011596
ISSUE 1
PM4328 TECT3
HIGH DENSITY T1/E1 FRAMER
AND M13 MULTIPLEXER
Table 11: Structure for Carrying Multiplexed Links
SBI Column
1
6 7 8 15 16 17 18 19
268 269 270
Row 1 - ··· - C1 - ··· - SPE1SPE2SPE3SPE1 ··· SPE1SPE2SPE3
2 - ··· - - - ··· - SPE1SPE2SPE3SPE1 ··· SPE1SPE2SPE3
9-
---
1
233
SPE Column
- SPE1SPE2SPE3SPE1
56 6 6 7
SPE1 SPE2 SPE3
90 90 90
The TECT3, when enabled for SBI interconnection, will add and drop either 28
T1s or a DS3 into one of the three Synchronous Payload Envelopes, SPE1,
SPE2 or SPE3.
Tributary Numbering
Tributary numbering for T1 uses the SPE number, followed by the Tributary
number within that SPE and are numbered sequentially. Table 12 shows the T1
column numbering and relates the tributary number to the SPE column numbers
and overall SBI column structure. Numbering for DS3 follows the same naming
convention even though there is only one DS3 per SPE. SBI columns 16-18 are
unused for T1 tributaries.
Table 12: T1 Tributary Column Numbering
T1#
1,1
2,1
3,1
1,2
2,2
···
1,28
2,28
3,28
SPE1 Column SPE2 Column SPE3 Column
7,35,63
8,36,64
7,35,63
8,36,64
7,35,63
SBI Column
19,103,187
20,104,188
21,105,189
22,106,190
23,107,191
34,62,90
34,62,90
34,62,90
100,184,268
101,185,269
102,186,270
PROPRIETARY AND CONFIDENTIAL
158
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