peb3456e Infineon Technologies Corporation, peb3456e Datasheet - Page 113
![no-image](/images/no-image-200.jpg)
peb3456e
Manufacturer Part Number
peb3456e
Description
Channelized T3 Termination, With Ds3 Framer, M13 Multiplexer, T1/e1 Framers And 256-channel Hdlc/ppp Controller
Manufacturer
Infineon Technologies Corporation
Datasheet
1.PEB3456E.pdf
(424 pages)
- Current page: 113 of 424
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• M23 multiplex format
• C-bit parity format with modified M23 multiplex operation
• C-bit parity format with non-M23 multiplex operation (Full payload rate format)
4.10.1
The framing structure of the M23 multiplex signal is shown in Table 4-13. Each DS3
multiframe consists of 7 subframes and each subframe of eight blocks. One block
consists of 85 bits, where the first bit is the overhead (OH) bit and the remaining 84 bits
are the information bits. The 84 information bits are divided into seven time slots of 12
bits each. The first time slot is assigned to the 1
slot is assigned to the 2
Table 4-13
F
M
C
P
X
Data Sheet
frame
Multi-
DS3-
0
11
0
, F
F
subframe in block 2, 4, 6 and 8. F
every subframe.
, M
M
block in subframe 5,6 and 7. The multiframe alignment signal is ’010’.
The C-bits control the bit stuffing procedure of the multipexed DS2 signals.
The P-bits contain parity information and are calculated as even parity on all information bits of
the previous DS3 frame. Both P-bits are identical.
The X-bits are used for transmission of asynchronous in-service messages. Both X-bits must be
identical and may not change more than once every second.
..C
0
0
1
and F
and M
73
frame
Sub-
1
2
3
4
5
6
7
1
1
M23 multiplex format
form the frame alignment pattern. Each DS3 frame consists of 28 F-bits, four per
form the multiframe alignment signal. The M-bit is contained in the OH-bit of the first
M
M
M
M23 multiplex format
X [84] F
X [84] F
P [84] F
P [84] F
0
1
0
1
[84] F
[84] F
[84] F
nd
1
1
1
1
1
1
1
tributary DS2 signal and so forth.
2
[84] C
[84] C
[84] C
[84] C
[84] C
[84] C
[84] C
Block 1 through 8 of a subframe
0
11
21
31
41
51
61
71
and F
3
[84] F
[84] F
[84] F
[84] F
[84] F
[84] F
[84] F
1
form the pattern ’1001’. This pattern is repeated in
113
0
0
0
0
0
0
0
4
[84] C
[84] C
[84] C
[84] C
[84] C
[84] C
[84] C
st
tributary DS2 signal, the second time
12
22
32
42
52
62
72
5
[84] F
[84] F
[84] F
[84] F
[84] F
[84] F
[84] F
0
0
0
0
0
0
0
Functional Description
6
[84] C
[84] C
[84] C
[84] C
[84] C
[84] C
[84] C
13
23
33
43
53
63
73
7
PEB 3456 E
[84] F
[84] F
[84] F
[84] F
[84] F
[84] F
[84] F
05.2001
1
1
1
1
1
1
1
8
[84]
[84]
[84]
[84]
[84]
[84]
[84]
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