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

   QS-2000/3000

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

<gopher://bitreich.org/I/th99/i/P-R/50483-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |    Purpose     | Location |       Purpose       | Location |
   |----------------+----------+---------------------+----------|
   | DB-37 I/O port |   CN1    | 6-pin RJ-11 I/O     |   CN2    |
   |                |          | port                |          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              CHANNEL 1 LOOPBACK CONFIGURATION              |
   |------------------------------------------------------------|
   |           Setting           |              J1              |
   |-----------------------------+------------------------------|
   |>> |    RTS/CTS loopback     |   Pins 1 & 5 closed, 1 & 2   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |   |      Transmit RTS       |   Pins 5 & 6 closed, 6 & 7   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |   |       Receive CTS       |   Pins 1 & 2 closed, 2 & 3   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |>> |   RCLK/XCLK loopback    |   Pins 3 & 7 closed, 2 & 3   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |   |      Transmit XCLK      |   Pins 6 & 7 closed, 5 & 6   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |   |      Receive RCLK       |   Pins 2 & 3 closed, 1 & 2   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |>> | AUX OUT/AUX IN loopback | Pins 2 & 6 closed, 5 & 6, 6  |
   |   |                         |           & 7 open           |
   |---+-------------------------+------------------------------|
   |   |       Half Duplex       |      Pins 4 & 8 closed       |
   |---+-------------------------+------------------------------|
   |   |       Full Duplex       |       Pins 4 & 8 open        |
   +------------------------------------------------------------+

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

   +------------------------------------------------------------+
   |              CHANNEL 3 LOOPBACK CONFIGURATION              |
   |------------------------------------------------------------|
   |           Setting           |              J3              |
   |-----------------------------+------------------------------|
   |>> |    RTS/CTS loopback     |   Pins 1 & 5 closed, 1 & 2   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |   |      Transmit RTS       |   Pins 5 & 6 closed, 6 & 7   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |   |       Receive CTS       |   Pins 1 & 2 closed, 2 & 3   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |>> |   RCLK/XCLK loopback    |   Pins 3 & 7 closed, 2 & 3   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |   |      Transmit XCLK      |   Pins 6 & 7 closed, 5 & 6   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |   |      Receive RCLK       |   Pins 2 & 3 closed, 1 & 2   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |>> | AUX OUT/AUX IN loopback | Pins 2 & 6 closed, 5 & 6, 6  |
   |   |                         |           & 7 open           |
   |---+-------------------------+------------------------------|
   |   |       Half Duplex       |      Pins 4 & 8 closed       |
   |---+-------------------------+------------------------------|
   |   |       Full Duplex       |       Pins 4 & 8 open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |              CHANNEL 4 LOOPBACK CONFIGURATION              |
   |------------------------------------------------------------|
   |           Setting           |              J4              |
   |-----------------------------+------------------------------|
   |>> |    RTS/CTS loopback     |   Pins 1 & 5 closed, 1 & 2   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |   |      Transmit RTS       |   Pins 5 & 6 closed, 6 & 7   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |   |       Receive CTS       |   Pins 1 & 2 closed, 2 & 3   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |>> |   RCLK/XCLK loopback    |   Pins 3 & 7 closed, 2 & 3   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |   |      Transmit XCLK      |   Pins 6 & 7 closed, 5 & 6   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |   |      Receive RCLK       |   Pins 2 & 3 closed, 1 & 2   |
   |   |                         |             open             |
   |---+-------------------------+------------------------------|
   |>> | AUX OUT/AUX IN loopback | Pins 2 & 6 closed, 5 & 6, 6  |
   |   |                         |           & 7 open           |
   |---+-------------------------+------------------------------|
   |   |       Half Duplex       |      Pins 4 & 8 closed       |
   |---+-------------------------+------------------------------|
   |   |       Full Duplex       |       Pins 4 & 8 open        |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                   INPUT CLOCK FREQUENCY                    |
   |------------------------------------------------------------|
   |           MHz            |               J5                |
   |--------------------------+---------------------------------|
   |>> |        1.8432        | Pins 1 & 2, 3 & 6, 4 & 5 closed |
   |---+----------------------+---------------------------------|
   |   |        3.6864        |    Pins 2 & 3, 4 & 5 closed     |
   |---+----------------------+---------------------------------|
   |   |        9.216         |    Pins 1 & 2, 5 & 6 closed     |
   |---+----------------------+---------------------------------|
   |   |        18.432        |        Pins 2 & 5 closed        |
   +------------------------------------------------------------+