4. Each Component Function
IPC-BX955 User’s manual
27
Serial Port Interface : SERIAL1 - 2
SERIAL1, 2 (RS-232C Ports)
The product has 2 channels of RS-232C compliant serial ports supporting up to a baud rate of 115,200bps
with a 16-byte transmission-dedicated data buffer and a 16-byte reception-dedicated data buffer. You can
use “Chapter 5 BIOS Setup” to configure an I/O address, interrupt and unused state for each of the ports
independently. (The same I/O address and IRQ cannot be shared with any other device.)
Please refer to “Chapter 6 I/O Port Addresses”
for more information on I/O address and register
function.
Table 4.6. SERIAL 1, 2 I/O Addresses and Interrupts
SERIAL
I/O address
Interrupt
1
3F8h - 3FFh
IRQ 4
2
2F8h - 2FFh
IRQ 3
Table 4.7. Serial Port Connector
Connector used on
the product
9-pin D-SUB (MALE)
1
5
9
6
No.4-40UNC
Inch screw
threads
Pin No.
Signal
name
Meaning
Direction
1
CD
Carrier detect
Input
2
RD
Received data
Input
3
TD
Transmitted data
Output
4
DTR Data terminal ready
Output
5
GND Signal ground
-----
6
DSR Data set ready
Input
7
RTS Request to send
Output
8
CTS Clear to send
Input
9
RI
Ring indicator
Input