Kontron cPCI-DMXS64GX Technical Reference Manual page 37

cPCI-DMXS64GX Technical Reference Manual
Upon a power-up or reset, the Serial Port 3 interface circuits are automatically configured for
the operation mode setup in the BIOS. The Serial Port 3 signal assignation on the J5 CPCI
I/O connector depends on the operation mode (RS-232, RS-422, or RS-485) it has been set:
Pin Number (J5)
A11
C11
D11
E11
A12
B12
C12
E12
RS-232 RS-422
COM2_DCD
/DCD
COM2_RXD#
RX(-)
COM2_DSR
DSR
COM2_TXD#
TX(-)
COM2_RTS
RX(+)
COM2_CTS
TX(+)
COM2_RI
/RI
COM2_DTR
/DTR
2.12
RS-485
/DCD
RX/TX(-)
DSR
-
RX/TX(+)
-
/RI
/DTR