Com (Serial) Ports - DFI KU173 User Manual

COM (Serial) Ports

2
1
COM 1:
RS232/422/485
The pin functions of COM 1 will vary according to BIOS' and JP5's settings. COM 1 can be se-
lected among RS232, RS422 and RS485 via BIOS. JP5 is designed to configure Serial COM port
1 to pure RS232 or RS232 with power. Refer to "COM 1 RS232/Power Select" in this chapter
for more information.
COM 2 is fixed at RS232.
The serial ports are asynchronous communication ports with 16C550A-compatible UARTs that
can be used with modems, serial printers, remote display terminals, and other serial devices.
Connecting External Serial Ports
Your COM port may come mounted on a card-edge bracket. Install the card-edge bracket to
an available slot at the rear of the system chassis then insert the serial port cable to the COM
connector. Make sure the colored stripe on the ribbon cable is aligned with pin 1 of the COM
connector.
BIOS Setting
Configure the serial COM ports in the Advanced menu ("SIO NUVOTON6106D" submenu) of
the BIOS. Refer to the chapter 3 for more information.
Chapter 2 Hardware Installation
Chapter 2
COM 2: RS232
2
1 9
COM 1 COM 2
9
COM 1 Port Connect
RS422
Pin RS232
(Full Duplex)
1
DCD- RX+
2
SIN- RX-
SO- TX+
3
DTR- TX-
4
GND GND
5
DSR- NC
6
RTS- NC
7
CTS- NC
8
RI- NC
9
21
RS485
DATA+
DATA-
NC
NC
GND
NC
NC
NC
NC
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