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4. Each Component Function
USB Ports : USB
This product is equipped with 4 channels 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
SERIAL A (RS-232C Ports)
The product has 1 channel 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 I/O Addresses and Interrupts
SERIAL
I/O address
Interrupt
A
3F8h - 3FFh
IRQ 4
Table 4.7.
Serial Port Connector
Connector used on
9-pin D-SUB (MALE)
the product
1
5
6
Pin No.
Signal
name
No.4-40UNC
Inch screw
threads
9
Meaning
Direction
1
CD
Carrier detect
2
RD
Received data
Input
3
TD
Transmitted data
Output
Output
Input
4
DTR
Data terminal ready
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
BX-961D Series User’s Manual
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