
DIGI INTERNATIONAL, INC.

MC/4I+, MC/8I+ (RS-422/485 VERSION)

Card Type              Serial
Processor              80C186
Processor Speed        Unidentified
Chipset                Unidentified
Maximum Onboard Memory 256KB dual-ported RAM
I/O Options            Serial ports (5 for MC/4i+, 9 for MC/8i+)
Data Bus               MCA
Card Size              Full height, full length

[Image]

                                CONNECTIONS

          Function             Label           Function           Label

  RS-422 or RS-485              CN1      Header to H2B             H2A
  asynchronous serial ports
  via DB-78 connector

  RS-422 or RS-485              CN2      Header to H2A             H2B
  synchronous serial port
  via RJ-45 connector

  Header to H1B                 H1A      Header to H3B             H3A

  Header to H1A                 H1B      Header to H3A             H3B

            Note:Standard serial ports are provided on an included
            adapter cable.

                        USER CONFIGURABLE SETTINGS

                  Setting                      Label         Position

     Shared memory window is 32KB              JP1         Pins 2 & 3
                                                              closed

      Shared memory window is 128KB             JP1         Pins 1 & 2
                                                              closed

                     EPROM SIZE SELECTION

       Setting                J5                   J6

        16KB           Pins 1 & 2 closed   Pins 1 & 2 closed

        32KB           Pins 1 & 2 closed   Pins 1 & 2 closed

        64KB           Pins 1 & 2 closed   Pins 2 & 3 closed

        128KB          Pins 2 & 3 closed   Pins 2 & 3 closed

                 SYNCHRONOUS PORT PINS 1 & 2 CONFIGURATION

           Pin 1                       Pin 2                    J1

        CTS positive               CTS negative             Pins 1 & 2
                                                              closed

   Receive/transmit clock      Receive/transmit clock       Pins 2 & 3
          positive                   negative                 closed

                SYNCHRONOUS PORT PINS 9 & 10 CONFIGURATION

           Pin 9                      Pin 10                    J2

        RTS positive               RTS negative             Pins 1 & 2
                                                              closed

   Transmit/receive clock      Transmit/receive clock       Pins 2 & 3
          positive                   negative                 closed

