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RELEASED
PM73122 AAL1GATOR-32
DATASHEET
PMC-1981419
ISSUE 7
32 LINK CES/DBCES AAL1 SAR PROCESSOR
PROPRIETARY AND CONFIDENTIAL TO PMC-SIERRA, INC., AND FOR ITS CUSTOMERS’ INTERNAL USE
174
Table 13 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
-
-
-
-
- SPE1SPE2SPE3SPE1
SPE1SPE2SPE3
1
2
3
3
5
6
6
6
7
90
90
90
SPE Column
The mappings for each link type are rigidly defined, however the mix of links
transported across the bus at any one time is flexible. Each synchronous
payload envelope, comprising 85 columns numbered 6 through 90, operates
independently allowing a mix of T1s, E1s, or DS3s. For example, SPE1 could
transport a single DS3, SPE2 could transport 28 T1s and SPE3 could transport
21 E1s. Each SPE is restricted to carrying a single tributary type. SBI columns
16-18 are unused for T1, and E1 tributaries.
Tributary numbering for T1 and E1 uses the SPE number, followed by the
Tributary number within that SPE and are numbered sequentially. Table 14 and
Table 15 show the T1 and E1 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.
Table 14 T1 Tributary Column Numbering
T1#
SPE1 Column
SPE2 Column
SPE3 Column
SBI Column
1,1
2,1
3,1
1,2
2,2
1,28
2,28
3,28
7,35,63
19,103,187
20,104,188
21,105,189
22,106,190
23,107,191
7,35,63
7,35,63
8,36,64
8,36,64
34,62,90
100,184,268
101,185,269
102,186,270
34,62,90
34,62,90