Распиновка, расположение выводов и внешний вид последовательного интерфейса:
RS422 37pin
(at the DTE)
(at the DCE)
37 PIN D-SUB MALE at the DTE (Computer).
37 PIN D-SUB FEMALE at the DCE (Modem).
Pin
Name
Dir
Description
1
GND
Shield Ground
2
SRI
Signal Rate Indicator
3
n/c
—
Spare
4
SD
Send Data
5
ST
Send Timing
6
RD
Receive Data
7
RTS
Request To Send
8
RR
Receiver Ready
9
CTS
Clear To Send
10
LL
Local Loopback
11
DM
Data Modem
12
TR
Terminal Ready
13
RR
Receiver Ready
14
RL
Remote Loopback
15
IC
Incoming Call
16
SF/SR
Select Frequency/Select Rate
17
TT
Terminal Timing
18
TM
Test Mode
19
GND
Ground
20
RC
Receive Twister-Pair Common
21
GND
Spare Twister-Pair Return
22
/SD
Send Data TPR
23
GND
Send Timing TPR
24
GND
Receive Timing TPR
25
/RS
Request To Send TPR
26
/RT
Receive Timing TPR
27
/CS
Clear To Send TPR
28
IS
Terminal In Service
29
/DM
Data Mode TPR
30
/TR
Terminal Ready TPR
31
/RR
Receiver TPR
32
SS
Select Standby
33
SQ
Signal Quality
34
NS
New Signal
35
/TT
Terminal Timing TPR
36
SB
Standby Indicator
37
SC
Send Twister Pair Common
Note: Direction is DTE (Computer) relative DCE (Modem).
Contributor:
Joakim Цgren,
Petr Krc
Source:
?
Copyright © The Hardware Book Team 1996-2004.
May be copied and redistributed, partially or in whole, as appropriate.
Document last modified: 2002-01-10