cx28394 Conexant Systems, Inc., cx28394 Datasheet - Page 288

• Manufacturer Part Number: cx28394
• Description: Quad/x16/octal-t1/e1/j1 Framers
• Manufacturer: Conexant Systems, Inc.

Appendix A
A.6 IRSM CEPT Frame Format
Table A-7. IRSM CEPT Frame Format Time Slot 0 Bit Allocations
A-10
Note(s):
1. SMF indicates the sub-multiframe. This partitioning is used in the CRC-4 calculation.
2. Si bits are International Spare Bits.
3. NA bit is used to indicate a remote alarm condition (active high).
4. Ei are per channel control bits.
5. E bit is used to indicate a CRC-4 error. The normal state is both bits set to 1; when a CRC-4 error is detected, one of the E bits
6. C1 to C4 bits are used to carry the CRC-4 code.
7. Time slot 0 that contains the 0011011 sequence is defined as the FAS word. Time slot 0 that does not contain the FAS is the
8. D bits are a 4 kbps data link.
9. Bit 2 of the Not-Word is defined as the alternate framing bit.
SMF
II
I
is set to 0.
Not-Word.
Frame #
10
11
12
13
14
15
0
1
2
3
4
5
6
7
8
9
C1/Si
C2/Si
C3/Si
C4/Si
C1/Si
C2/Si
C3/Si
C4/Si
0/Si
0/Si
1/Si
0/Si
1/Si
1/Si
E/Si
E/Si
1
A.6 IRSM CEPT Frame Format
2
0
1
0
1
0
1
0
1
0
1
0
1
0
1
0
1
3
0
A
0
A
0
A
0
A
0
A
0
A
0
A
0
A
Conexant
Time Slot 0 Bits 1 to 8 of each frame
D
D
D
D
D
D
D
D
4
1
1
1
1
1
1
1
1
E10
E12
E14
E0
E2
E4
E6
E8
5
1
1
1
1
1
1
1
1
Quad/x16/Octal—T1/E1/J1 Framers
E11
E13
E15
E1
E3
E5
E7
E9
6
0
0
0
0
0
0
0
0
CX28394/28395/28398
E16
E18
E20
E22
E24
E26
E28
E30
7
1
1
1
1
1
1
1
1
100054E
E17
E19
E21
E23
E25
E27
E29
E31
8
1
1
1
1
1
1
1
1