STANDARD PRODUCT
PM4351 COMET
DATA SHEET
PMC-1970624
ISSUE 10
COMBINED E1/T1 TRANSCEIVER
Table 25
FE
- Receive Backplane Bit Offset for CMS = 0
BOFF[2:0]
DE
000
4
001
6
010
8
011
10
9
100
12
11
101
14
13
110
16
15
15
16
111
18
17
17
18
0
0
1
1
0
1
0
1
3
5
7
CET
3
5
7
9
11
13
4
6
8
10
12
14
Table 26
FE
- Receive Backplane Bit Offset for CMS = 1
BOFF[2:0]
DE
000
4
001
8
010
12
11
011
16
15
15
16
100
20
101
24
110
28
27
27
28
111
32
31
31
32
0
0
1
1
0
1
0
1
3
7
19
23
CET
3
7
11
19
23
4
8
12
20
24
The above tables are consistent with the convention established by the
Concentration Highway Interface (CHI) specification.
Note that in the case where FE is logic 0, DE is logic 1 and BRFP is configured
for a superframe/multiframe mode, the maximum offset is one frame less two
bits, rather than one frame less one bit as in all other configurations. In this
configuration, the maximum offset is 191 bits at 1.544 Mbit/s, 254 bits at
2.048 Mbit/s, 510 bits at 4.096 Mbit/s and 1022 bits at 8.192 Mbit/s.
PROPRIETARY AND CONFIDENTIAL
148
PMC [ PMC-SIERRA, INC ]
