QUATECH, INC.
=============

   DS-2000/3000

   Card Type          Serial controller                           
   Chipset/Controller 16550                                       
   I/O Options        Serial ports (2)                            
   Maximum DRAM       N/A                                         

<gopher://bitreich.org/I/th99/i/P-R/50450-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Purpose      | Location |     Purpose      | Location |
   |-------------------+----------+------------------+----------|
   | Serial port 1     |   CN1    | Serial port 2    |   CN2    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                     DTR CONFIGURATION                      |
   |------------------------------------------------------------|
   |          Setting           |              J4               |
   |----------------------------+-------------------------------|
   |>> |         - DTR          |   Pins 2 & 3, 5 & 6 closed    |
   |---+------------------------+-------------------------------|
   |   |         + DTR          |   Pins 1 & 2, 4 & 5 closed    |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                 INPUT CLOCK CONFIGURATION                  |
   |------------------------------------------------------------|
   |           MHz            |               J1                |
   |--------------------------+---------------------------------|
   |>> |      1.8432MHz       | Pins 1 & 4, 2 & 3, 5 & 6 closed |
   |---+----------------------+---------------------------------|
   |   |      3.6864MHz       |    Pins 2 & 3, 4 & 5 closed     |
   |---+----------------------+---------------------------------|
   |   |       9.216MHz       |    Pins 1 & 2, 5 & 6 closed     |
   |---+----------------------+---------------------------------|
   |   |      18.432MHz       |        Pins 2 & 5 closed        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |               TRANSMIT/RECEIVE CONFIGURATION               |
   |------------------------------------------------------------|
   |        Function         |                J2                |
   |-------------------------+----------------------------------|
   |    RTS/CTS loopback     |  Pins 1 & 5 closed, pins 1 & 2   |
   |                         |               open               |
   |-------------------------+----------------------------------|
   |      Transmit RTS       |  Pins 5 & 6 closed, pins 6 & 7   |
   |                         |               open               |
   |-------------------------+----------------------------------|
   |       Receive RTS       |  Pins 1 & 2 closed, pins 2 & 3   |
   |                         |               open               |
   |-------------------------+----------------------------------|
   |   RCLK/XCLK loopback    |  Pins 3 & 7 closed, pins 2 & 3   |
   |                         |               open               |
   |-------------------------+----------------------------------|
   |      Transmit XCLK      |  Pins 6 & 7 closed, pins 5 & 6   |
   |                         |               open               |
   |-------------------------+----------------------------------|
   |      Receive RCLK       |  Pins 2 & 3 closed, pins 1 & 2   |
   |                         |               open               |
   |-------------------------+----------------------------------|
   | AUX OUT/AUX IN loopback | Pins 2 & 6 closed, pins 5 & 6, 6 |
   |                         |             & 7 open             |
   |-------------------------+----------------------------------|
   |       Half Duplex       |        Pins 4 & 8 closed         |
   |-------------------------+----------------------------------|
   |       Full Duplex       |         Pins 4 & 8 open          |
   +------------------------------------------------------------+