Specifications

CompuLab Ltd. IPC2 – Hardware Specification Page 62 of 83
Table 35 – COM3 Serial Port Pinout
Pin #
Signal
Host Direction
Description
1
COM3_TX
Out
Transmit Data –
Carries data from DTE to DCE
2
COM3_RTS
Out
Request To Send –
DTE requests the DCE prepare to receive data
3
COM3_RX
In
Receive Data –
Carries data from DCE to DTE
4
COM3_CTS
In
Clear To Send –
Indicates DCE is ready to accept data
5
COM3_DTR
Out
Data Terminal Ready –
Indicates presence of DTE to DCE
6
COM3_DSR
In
Data Set Ready –
DCE is ready to receive commands or data
7
COM3_RI
N/A
Ring Indicator is not supported
8
GND
-
Ground