peb2035 ETC-unknow, peb2035 Datasheet - Page 35

• Manufacturer Part Number: peb2035
• Description: Communications Advanced Cmos Frame Aligner
• Manufacturer: ETC-unknow

CRC-Multiframe
The multiframe structure shown in table 3 is enabled by setting bit: MODE.CRC.
Multiframe
Frame alignment
Multiframe alignment
CRC bits
CRC block size
CRC procedure
Table 3
CRC-Multiframe Structure
E: Spare bits for international use. Access to received information via bits RSP.RS13 and
RSP.RS15. Transmission is enabled via bits XSP.XS13 and XSP.XS15. Additionally, automatic
transmission for submultiframe error indication is selectable.
S
C1..C4: Cyclic redundancy check bits
A: Remote alarm indication
Semiconductor Group
Multiframe
a
: Spare bits for national use. Additionally, the 5-byte stacks RSN and XSN are provided.
Sub-Multiframe Frame Number
II
I
:
:
:
:
:
:
2 submultiframes = 2
refer to section Doubleframe Format
bit 1 of frames 1, 3, 5, 7, 9, 11 with the pattern ‘001011’
bit 1 of frames 0, 2, 4, 6, 8, 10, 12, 14
2048 bit (length of a submultiframe)
CRC4, according to CCITT Rec. G704
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
35
C1
C2
C3
C4
C1
C2
C3
C4
E*
E*
1
0
0
1
0
1
1
8 frames
2
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
Bits 1 to 8 of the frame
A
A
A
A
A
A
A
A
3
0
0
0
0
0
0
0
0
S
S
S
S
S
S
S
S
4
1
1
1
1
1
1
1
1
a4
a4
a4
a4
a4
a4
a4
a4
S
S
S
S
S
S
S
S
5
1
1
1
1
1
1
1
1
a5
a5
a5
a5
a5
a5
a5
a5
S
S
S
S
S
S
S
S
6
0
0
0
0
0
0
0
0
a6
a6
a6
a6
a6
a6
a6
a6
PEB 2035
S
S
S
S
S
S
S
S
7
1
1
1
1
1
1
1
1
a7
a7
a7
a7
a7
a7
a7
a7
S
S
S
S
S
S
S
S
8
1
1
1
1
1
1
1
1
a8
a8
a8
a8
a8
a8
a8
a8