Contec PT-955SHX, User Manual

Page: 35 / 95

4. Each Component Function
28
PT-955SxX User’s manual
USB Ports: USB
This product is equipped with 4 port for USB 2.0 interface.
Table 4.5. USB Connector
1
4
Pin No. Function
1 USB_VCC
2 USB-
3 USB+
4 USB_GND
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 I/O address Interrupt
A 3F8h - 3FFh
IRQ 4
B 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