QUATECH, INC.

DS-225/DS-325

Card Type          Serial interface
Chipset Controller Unidentified
I/O Options        Serial ports (2)
Maximum Dram       N/A

[Image]

                            CONNECTIONS

        Purpose          Location         Purpose          Location

  Serial port 1            J1       Serial port 2            J2

             INTERRUPT SELECTION

          IRQ                   JP3

           2             Pins 1 & 2 closed

           3             Pins 3 & 4 closed

           4             Pins 5 & 6 closed

           5             Pins 7 & 8 closed

           6             Pins 9 & 10 closed

           7            Pins 11 & 12 closed

    SERIAL INTERRUPT SHARING SELECTION

       Setting               JP2

    Non-sharable      Pins 1 & 2 closed

      Sharable        Pins 2 & 3 closed

   RS-422/485 DRIVER POWER-UP STATE SELECTION

         State                    JP5

        Enabled          Pins 2 & 3 connected

        Disabled         Pins 1 & 2 connected

                             ADDRESS SELECTION

  Address    SW1/1  SW1/2   SW1/3   SW1/4   SW1/5   SW1/6   SW1/7   SW1/8

   000h       On     On      On      On      On      On      On      On

   008h       On     On      On      On      On      On      On      Off

   010h       On     On      On      On      On      On     Off      On

   018h       On     On      On      On      On      On     Off      Off

    2E8h      On     Off     On      Off     Off    Off      On      Off
  (COM4:)

    2F8h      On     Off     On      Off     Off    Off     Off      Off
  (COM2:)

    3E8h      On     Off     Off     Off     Off    Off      On      Off
  (COM3:)

    3F8h      On     Off     Off     Off     Off    Off     Off      Off
  (COM1:)

   7E0h      Off     Off     Off     Off     Off    Off      On      On

   7E8h      Off     Off     Off     Off     Off    Off      On      Off

   7F0h      Off     Off     Off     Off     Off    Off     Off      On

   7F8h      Off     Off     Off     Off     Off    Off     Off      Off

  Note: A total of 255 memory base address settings are available. The
  switches are a binary representation of the decimal addresses. Switch 8
  is the Least Significant Bit and switch 1 is the Most Significant Bit.
  The switches have the following decimal values: switch 8=1, 7=2, 6=4,
  5=8, 4=16, 3=32, 2=64, 1=128. Turn off the switches and add the off
  switches to obtain the correct memory base address. (On=0, Off=1)

   DTE/DCE SELECTION

          JP6

    DTE        DCE

  [Image]    [Image]

                  INPUT CLOCK DIVISOR SELECT

                              JP1

  10 (Default)         5               2              1

  [Image]        [Image]         [Image]         [Image]

                             PROTOCOL SELECTION

  Protocol     SW2/1  SW2/2   SW2/3   SW2/4   SW2/5   SW2/6   SW2/7   SW2/8

   Software    Off     Off     Off     Off     Off    Off     Off     Off
   select

   RS-232       On     On      On      Off     Off     On     Off     Off

  RS-422/485    On     On      Off     On      Off    Off      On     Off

   Current      On     On      Off     Off     On     Off     Off      On
    loop

                   CURRENT LOOP TRANSMIT MODE SELECTION

   Mode     SW3/1   SW3/2   SW3/3   SW3/4   SW3/5   SW3/6   SW3/7   SW3/8

  Passive    On      On     Off     Off     Off     Off     Off      Off

   20mA     Off     Off      On      On      On     Off     Off      Off
  active

   30mA     Off     Off      On      On      On      On     Off      Off
  active

   60mA      On      On     Off     Off     Off     Off     Off      On
  active

                        CURRENT LOOP RECEIVE MODE SELECTION

   Mode     SW4/1  SW4/2   SW4/3   SW4/4   SW4/5   SW4/6   SW4/7   SW4/8    JP4

  Passive    On     On      Off     Off     Off    Off     Off     Off      Open

   20mA     Off     Off     On      On      On     Off     Off     Off      1 & 2
  active                                                                   closed

   30mA     Off     Off     On      On      On      On     Off     Off      3 & 4
  active                                                                   closed

   60mA      On     On      Off     Off     Off    Off     Off      On      5 & 6
  active                                                                   closed