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User Manual
User Manual
User Manual
23
2.3.9.
COM Connector
There are two onboard COM connectors on the top side of the mainboard.
The COM connectors labeled as “COM1” and ”COM2” are used to attach
additional COM port that supports Tx/Rx. The pinout of the COM connectors
are shown below.
Figure
Figure
Figure
Figure 18
18
18
18: COM connector diagram
: COM connector diagram
: COM connector diagram
: COM connector diagram
COM1
COM1
COM1
COM1
COM2
COM2
COM2
COM2
Pin
Pin
Pin
Pin
Signal
Signal
Signal
Signal
Pin
Pin
Pin
Pin
Signal
Signal
Signal
Signal
1
TXD0
1
TXD2
2
RXD0
2
RXD2
3
GND
3
GND
4
N/A
4
N/A
5
N/A
5
N/A
Table
Table
Table
Table 17
17
17
17: COM connector pinout
: COM connector pinout
: COM connector pinout
: COM connector pinout