參數資料
型號: DS2180A
英文描述: T1 Transceiver
中文描述: T1收發(fā)器
文件頁數: 24/35頁
文件大?。?/td> 481K
代理商: DS2180A
DS2180A
24 of 35
193E FRAMING FORMAT
Table 7
F-BIT USE
FRAME
NUMBER
FPS
1
FPL
2
BIT USE IN EACH CHANNEL
DATA
SIGNALING-BIT USE
4
STATE
CRC
3
SIGNALING
2
STATE
16
STATE
1
2
3
4
5
6
7
8
9
-
-
-
0
-
-
-
0
-
-
-
1
-
-
-
0
-
-
-
1
-
-
-
1
M
-
M
-
M
-
M
-
M
-
M
-
M
-
M
-
M
-
M
-
M
-
M
-
-
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
C1
-
-
-
C2
-
-
-
C3
-
-
-
C4
-
-
-
C5
-
-
-
C6
-
-
BIT 8
A
A
A
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
BIT 8
A
B
B
BIT 8
A
C
C
BIT 8
A
B
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
decodes of TMO, TSIGFR, TSIGSEL (Transmit Side) and RMSYNC, RSIGFR and RSIGSEL
(Receive Side).
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