Rainbow Electronics DS2180A - Manual (Page 24)

DS2180A
041995 24/36
193E FRAMING FORMAT Table 7
FRAME
F-BIT USE BIT USE IN EACH CHANNEL SIGNALING-BIT USE
FRAME
NUMBER
FPS 1 FDL 2 CRC 3 DATA SIGNALING 2
STATE
4
STATE
16
STATE
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
–
–
–
0
–
–
–
0
–
–
–
1
–
–
–
0
–
–
–
1
–
–
–
1
M
–
M
–
M
–
M
–
M
–
M
–
M
–
M
–
M
–
M
–
M
–
M
–
–
C1
–
–
–
C2
–
–
–
C3
–
–
–
C4
–
–
–
C5
–
–
–
C6
–
–
BITS 1–8
BITS 1–8
BITS 1–8
BITS 1–8
BITS 1–8
BITS 1–7
BITS 1–8
BITS 1–8
BITS 1–8
BITS 1–8
BITS 1–8
BITS 1–7
BITS 1–8
BITS 1–8
BITS 1–8
BITS 1–8
BITS 1–8
BITS 1–7
BITS 1–8
BITS 1–8
BITS 1–8
BITS 1–8
BITS 1–8
BITS 1–7
BIT 8
BIT 8
BIT 8
BIT 8
A
A
A
A
A
B
A
B
A
B
C
D
NOTES:
1. FPS – Framing Pattern Sequence.
2. FDL – 4 KHz Facility Data Link; M = message bits.
3. CRC – Cyclic Redundancy Check bits. The CRC code will be internally generated by the device when
TCR.5=0. When TCR.5=1, externally supplied CRC data will be sampled at TSER during the F-bit time of
frames 2, 6, 10, 14, 18, 22.
4. The user may program any individual channels clear, in which case bit 8 will be used for data, not signaling.
5. Depending on application, the user can support 2-state, 4-state or 16-state signaling by the appropriate de-
codes of TMO, TSIGFR, TSIGSEL (Transmit Side) and RMSYNC, RSIGFR and RSIGSEL (Receive Side).