Nortel Networks 553-3001-211 manual Configuring the Qsdi card, Address switch settings

Page 864 of 894 QPC841 Quad Serial Data Interface card

Table 269

Connector J2 pin assignments (Part 2 of 2)

Pin
Number	Port	Signal	Purpose in DTE mode	Purpose in DCE mode
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.

Configuring the QSDI card

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

•Port address

•Baud rate

•DTE/DCE mode

Figure 186 on page 868 shows the location of the option switches on the QSDI card. Instructions for setting these switches are in the section that follows.

Address switch settings

Table 270 on page 865 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

553-3001-211 Standard 2.00 September 2004