t RS-232 High-Speed Modulet RS-232 High-Speed Module
t RS-232 High-Speed Modulet RS-232 High-Speed Module
t RS-232 High-Speed Module
PC/104 and the PC/104 logo are trademarks of the PC/104 Consortium Part no. 2000364100 1st Edition Printed in Taiwan August 2000
PCM-3641 4-port RS-232 High-Speed Module
The PCM-3641 is a PC/104-compatible 4-port High-Speed
RS-232 serial interface module. It works with PC/104 CPU
modules or CPU cards which accept PC/104 expansion
modules. It provides four independent serial interfaces,
accessed through male DB-9 connectors.
The module’s industry-standard 16C550 asynchronous
communication chip is fully programmable. The module
requires no special commands or control codes if you use
the standard COM1 ~ COM4 port addresses.
•Four independent RS-232 serial ports
•Transmission speeds up to 460 Kbps
•Independent/Shared IRQ settings for each of 4 serial
•Wide IRQ selection: 3, 4, 5, 6, 7, 9, 10, 11, 12, 15
•Supports Standard DOS COM1, COM2, COM3, and
•Supports DOS/Windows 3.1 (PC-ComLib), Windows 95/
•Compatible with standard PC ports: COM1, COM2,
•On-board interrupt status register for greater throughput
•Complete RS-232 Modem-control signals
•I/O address: 0x0200 ~ 0x03F8
•IRQ: 3, 4, 5, 6, 7, 9, 10, 11, 12, 15
•Connectors: Four DB-9 male
•Data signals: TxD, RxD, RTS, CTS, DTR, DSR, DCD, RI,
•Power requirement: +5V@200 mA (Typical) ;
•Clock input: 14.7456 MHz
•Operating Temperature.: 0 ~ 65° C (refer to IEC-
•Storage Temperature: -25 ~ 80° C
We carefully inspected the PCM-3641 both
mechanically and electrically before we shipped it.
It should be free of marks and scratches and in
perfect electrical order on receipt.
Handle the board only by its edges. The static
charge on your body may damage its integrated
circuits. Keep the card in its anti-static package
whenever it is not installed. You can use this
package to return the card if it should need repair.
VECTOR ADDRESS BASE ADDRESSSW1SW2
PCM-3641 REV. A1 01-1 4 PORT RS-232
Each port on the PCM-3641 card has jumpers and
2 DIP switches which require configuring prior to
use. The DIP switches set the port to the
appropriate I/O address and different modes. The
jumpers set the port’s IRQ.
