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PCI-946-1 and P3S440BX Technical Reference manual
2-8
2.5.
SERIAL PORTS
Two full function serial ports are provided on the board for asynchronous serial
communications. They are 16C550 high-speed UART compatible and support 16-byte FIFO
buffers for transfer rates from 50bps to 115Kbaud.
2.5.1. Serial Port 1
The Serial Port 1 is available through the J7, 10-pin connector and supports the RS-232
operation mode. It is buffered directly for RS-232 operation. Signals include the complete
signal set for handshaking, modem control, interrupt generation, and data transfer. When
assigned as COM1, the port is 100% compatible with the IBM-AT serial port in RS-232
mode
Related Jumpers
None
BIOS Settings
To setup the Serial Port 1, refer to Section 4.1.10 –
AWARD CMOS Setup Utility,
Integrated Peripherals Setup
option
The usual way to use to the serial port is to issue its signals through a 10-pin header/9-pin
D-Sub adapter cable. An 18 inches 10-pin header/9-pin D-Sub adapter cable is available
from Kontron: Part number 150-019.
While adapter cables are provided from various sources, the pinout is often different. The
direct crimp design offered by Kontron allows the simplest cable assembly. All cables are
available from Kontron by contacting the Sales Department.
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