2-28
IEN HARDWARE REFERENCE
940043-002
V.35
Table 2-8 lists the DB25 pin assignments for a V.35 physical interface.
Table 2-8 DB25 (V.35)
PIN
V.35 Pin Assignment
Key
1
Frame Ground
FG
2
Pin not used
N/A
3
Pin not used
N/A
4
Request To Send
RTS
5
Clear To Send
CTS
6
Data Set Ready
DSR
7
Signal Ground
SG
8
Data Carrier Detect
DCD
9
Transmit Clock B
TC-B
10
Receive Clock B
RC-B
11
Transmit Data B
TD-B
12
Receive Data B
RD-B
13
External Transmit Clock B
ETC-B
14
Receive Data A
RD-A
15
Pin not used
N/A
16
Pin not used
N/A
17
Pin not used
N/A
18
Pin not used
N/A
19
Receive Clock A
RC-A
20
Data Terminal Ready
DTR
21
Transmit Clock A
TC-A
22
Pin not used
N/A
23
Transmit Data A
TD-A
24
Pin not used
N/A
25
External Transmit Clock A
ETC-A
Содержание IEN 1000
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