25针电脑串口接口定义

25针电脑串口接口定义
25针电脑串口接口定义

 

Pin
Name
Dir
Description


1
SHIELD
-
Shield Ground


2
TXD

Transmit Data


3
RXD

Receive Data


4
RTS

Request to Send


5
CTS

Clear to Send


6
DSR

Data Set Ready


7
GND
-
System Ground


8
CD

Carrier Detect


9
n/c
-
 


10
n/c
-
 


11
n/c
-
 


12
n/c
-
 


13
n/c
-
 


14
n/c
-
 


15
n/c
-
 


16
n/c
-
 


17
n/c
-
 


18
n/c
-
 


19
n/c
-
 


20
DTR

Data Terminal Ready


21
n/c
-
 


22
RI

Ring Indicator


23
n/c
-
 


24
n/c
-
 


25
n/c
-