Usb Ports: Usb; Serial Port Interface: Serial A - B - Contec PT-955SLX User Manual

4. Each Component Function

USB Ports: USB

This product is equipped with 4 port for USB 2.0 interface.
Table 4.5. USB Connector
1
4

Serial Port Interface: SERIAL A - B

SERIAL A,B (RS-232C Ports)
The product has 2 ports 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 A, B, C, D, E I/O Addresses and Interrupts
SERIAL
A
B
Table 4.7. Serial Port Connector
Connector used on
the product
1 5
6
9
Signal
Pin No.
name
1 CD Carrier detect
2 RD Received data
3 TD Transmitted data
4 DTR Data terminal ready
5 GND Signal ground
6 DSR Data set ready
7 RTS Request to send
8 CTS Clear to send
9 RI Ring indicator
28
Pin No. Function
1 USB_VCC
2 USB-
3 USB+
4 USB_GND
I/O address
3F8h - 3FFh
2F8h - 2FFh
9-pin D-SUB (MALE)
No.4-40UNC
Inch screw
threads
Meaning Direction
Input
Input
Output
Output
-----
Input
Output
Input
Input
Interrupt
IRQ 4
IRQ 3
PT-955SxX User's manual