Longshine GT150 - Manual (Page 32)

24 EMB-M3 User`s Manual
COM1~4 Serial Ports
COM1~4, a 9-pin D-Sub male connector, is the onboard COM1~4
serial port of the M3. The following table shows its pin assignments.
Pin # Signal Name
1 DCD, Data carrier detect
2 RXD, Receive data
3 TXD, Transmit data
4 DTR, Data terminal ready
5 GND, ground
6 DSR, Data set ready
7 RTS, Request to send
8 CTS, Clear to send
9 +5V,Ring-IN or +12V
COM5, COM6 Serial Ports
COM5, COM6, a 10-pin header connector, is the onboard COM5,
COM6 serial port of the M3. The following table shows its pin
assignments.
Pin
#
RS232 Mode
Signal Name
1 DCD, Data carrier detect
2 RXD, Receive data
3 TXD, Transmit data
4 DTR, Data terminal ready
5 GND, ground
6 DSR, Data set ready
7 RTS, Request to send
8 CTS, Clear to send
9 +5V,Ring-IN or +12V
10 NC