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

   QS-1000

   Category               I/O Controller                          
   Chipset Controller     16550 UART                              
   I /O Options Supported Serial ports (4)                        
   Maximum Onboard Memory N/A                                     

<gopher://bitreich.org/I/th99/i/P-R/50604-1.png>
   

   +------------------------------------------------------------+
   |                        CONNECTIONS                         |
   |------------------------------------------------------------|
   |      Purpose       | Location |     Purpose     | Location |
   |--------------------+----------+-----------------+----------|
   | Serial port 1 -    |   CN1    | Serial port 3 - |   CN3    |
   | RJ-11              |          | RJ-11           |          |
   |--------------------+----------+-----------------+----------|
   | Serial port 2 -    |   CN2    | Serial port 4 - |   CN4    |
   | RJ-11              |          | RJ-11           |          |
   +------------------------------------------------------------+

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

   +------------------------------------------------------------+
   |                  PORT 1 HANDSHAKE OPTIONS                  |
   |------------------------------------------------------------|
   |             Setting             |            J2            |
   |---------------------------------+--------------------------|
   |   RTS/CTS handshake, DTR/DSR    | Pins 1 & 2, 4 & 5, 3 & 6 |
   |            loopback             |          closed          |
   |---------------------------------+--------------------------|
   |    RTS/CTS loopback, DTR/DSR    | Pins 1 & 4, 2 & 3, 5 & 6 |
   |            handshake            |          closed          |
   |---------------------------------+--------------------------|
   |    RTS/CTS loopback, DTR/DSR    | Pins 1 & 4, 3 & 6 closed |
   |            loopback             |                          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  PORT 2 HANDSHAKE OPTIONS                  |
   |------------------------------------------------------------|
   |             Setting             |            J3            |
   |---------------------------------+--------------------------|
   |   RTS/CTS handshake, DTR/DSR    | Pins 1 & 2, 4 & 5, 3 & 6 |
   |            loopback             |          closed          |
   |---------------------------------+--------------------------|
   |    RTS/CTS loopback, DTR/DSR    | Pins 1 & 4, 2 & 3, 5 & 6 |
   |            handshake            |          closed          |
   |---------------------------------+--------------------------|
   |    RTS/CTS loopback, DTR/DSR    | Pins 1 & 4, 3 & 6 closed |
   |            loopback             |                          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  PORT 3 HANDSHAKE OPTIONS                  |
   |------------------------------------------------------------|
   |             Setting             |            J4            |
   |---------------------------------+--------------------------|
   |   RTS/CTS handshake, DTR/DSR    | Pins 1 & 2, 4 & 5, 3 & 6 |
   |            loopback             |          closed          |
   |---------------------------------+--------------------------|
   |    RTS/CTS loopback, DTR/DSR    | Pins 1 & 4, 2 & 3, 5 & 6 |
   |            handshake            |          closed          |
   |---------------------------------+--------------------------|
   |    RTS/CTS loopback, DTR/DSR    | Pins 1 & 4, 3 & 6 closed |
   |            loopback             |                          |
   +------------------------------------------------------------+

   +------------------------------------------------------------+
   |                  PORT 4 HANDSHAKE OPTIONS                  |
   |------------------------------------------------------------|
   |             Setting             |            J5            |
   |---------------------------------+--------------------------|
   |   RTS/CTS handshake, DTR/DSR    | Pins 1 & 2, 4 & 5, 3 & 6 |
   |            loopback             |          closed          |
   |---------------------------------+--------------------------|
   |    RTS/CTS loopback, DTR/DSR    | Pins 1 & 4, 2 & 3, 5 & 6 |
   |            handshake            |          closed          |
   |---------------------------------+--------------------------|
   |    RTS/CTS loopback, DTR/DSR    | Pins 1 & 4, 3 & 6 closed |
   |            loopback             |                          |
   +------------------------------------------------------------+