Nortel Networks Video Gaming Accessories 553-3001-211 Manual De Usuario

 QPC841 Quad Serial Data Interface card

Configuring the QSDI card consists of setting these option switches for each 
serial port:

•

Port address

•

Baud rate

•

DTE/DCE mode

 shows the location of the option switches on the 

QSDI card. Instructions for setting these switches are in the section that 
follows.

 lists the address switch settings for the QPC841 Quad 

Serial Data Interface card. The address select jumpers and logic on the card 
address the UARTs using two pairs of addresses: 0 and 1, 2 and 3, through 15 
and 16. The pairs do not need to be consecutive. Switch SW14 is used to 

19

GND

Ground

Ground

21

CD

Carrier detect (Note 1

Carrier detect (not used)

22

DTR

Data terminal ready

Data terminal ready (Note 2))

Note 1: In DTE mode, the signals CD, DSR, and CTS are tied to +12 volts (through a resistor) 
to indicate that the QSDI port is always ready to transmit and receive data.

Note 2: In DCE mode, the signals DTR and RTS are tied to +12 volts (through a resistor) to 
indicate that the QSDI port is always ready to transmit and receive data.