
NETWORK INTERFACE TECHNOLOGY CORPORATION

16-BIT ARCNET ADAPTER

NIC Type      ARCnet
Transfer Rate 2.5Mbps
Data Bus      8-bit ISA
Topology      Star

              Linear Bus
Wiring Type   Unshielded twisted pair

              RG58A/U 50ohm coaxial
Boot ROM      Available

[Image]

                                CABLE TYPE

            Type                  J5/A           J5/B           J5/C

      RG58A/U 50ohm coaxial    Pins 1 & 2     Pins 1 & 2     Pins 1 & 2
                                 closed         closed         closed

        Unshielded twisted      Pins 2 & 3     Pins 2 & 3     Pins 2 & 3
               pair              closed         closed         closed

                      CONNECTIONS

          Purpose                    Location

             J1              External LED connector 1

             J2              External LED connector 2

[Image]

                              DIAGNOSTIC LED

    LED         Color           Status                 Condition

    LED1         Red        On or Blinking        Data transmission is
                                                       occurring

    LED2        Green             On               Proper connection
                                                      established

    LED2        Green          Blinking        Reconfiguration occurring

   LED1 &        Red &           Off            Call Technical Support
    LED2        Green

                             INTERRUPT SELECT

   IRQ     J7/A     J7/B      J7/C     J7/D      J7/E     J7/F     J7/G

  IRQ2     Closed   Open      Open     Open      Open     Open     Open

  IRQ3     Open     Closed    Open     Open      Open     Open     Open

  IRQ4     Open     Open     Closed    Open      Open     Open     Open

  IRQ5     Open     Open      Open     Closed    Open     Open     Open

  IRQ10    Open     Open      Open     Open     Closed    Open     Open

  IRQ11    Open     Open      Open     Open      Open    Closed    Open

  IRQ12    Open     Open      Open     Open      Open     Open     Closed

                            I/O ADDRESS SELECT

      Address Range           J4/F             J4/G             J4/H

       260h - 26Fh          Pins 1 & 2      Pins 1 & 2       Pins 1 & 2
                             closed           closed           closed

       290h - 29Fh          Pins 2 & 3      Pins 1 & 2       Pins 1 & 2
                             closed           closed           closed

       2E0h - 2EFh          Pins 1 & 2      Pins 2 & 3       Pins 1 & 2
                             closed           closed           closed

       2F0h - 2FFh          Pins 2 & 3      Pins 2 & 3       Pins 1 & 2
                             closed           closed           closed

       300h - 30Fh          Pins 1 & 2      Pins 1 & 2       Pins 2 & 3
                             closed           closed           closed

       350h - 35Fh          Pins 2 & 3      Pins 1 & 2       Pins 2 & 3
                             closed           closed           closed

       380h - 38Fh          Pins 1 & 2      Pins 2 & 3       Pins 2 & 3
                             closed           closed           closed

       3E0h - 3EFh          Pins 2 & 3      Pins 2 & 3       Pins 2 & 3
                             closed           closed           closed

                        BASE MEMORY ADDRESS SELECT

  Address Range      J4/A       J4/B       J4/C       J4/D        J4/E

     C0000h -      Pins 1 &   Pins 1 &    Pins 1 &   Pins 1 &    Pins 1 &
     C07FFh           2          2           2          2           2

     C0800h -      Pins 2 &   Pins 1 &    Pins 1 &   Pins 1 &    Pins 1 &
     C0FFFh           3          2           2          2           2

     C1000h -      Pins 1 &   Pins 2 &    Pins 1 &   Pins 1 &    Pins 1 &
     C17FFh           2          3           2          2           2

     C1800h -      Pins 2 &   Pins 2 &    Pins 1 &   Pins 1 &    Pins 1 &
     C1FFFh           3          3           2          2           2

     C4000h -      Pins 1 &   Pins 1 &    Pins 2 &   Pins 1 &    Pins 1 &
     C47FFh           2          2           3          2           2

     C4800h -      Pins 2 &   Pins 1 &    Pins 2 &   Pins 1 &    Pins 1 &
     C4FFFh           3          2           3          2           2

     C5000h -      Pins 1 &   Pins 2 &    Pins 2 &   Pins 1 &    Pins 1 &
     C57FFh           2          3           3          2           2

     C5800h -      Pins 2 &   Pins 2 &    Pins 2 &   Pins 1 &    Pins 1 &
     C5FFFh           3          3           3          2           2

     CC000h -      Pins 1 &   Pins 1 &    Pins 1 &   Pins 2 &    Pins 1 &
     CC7FFh           2          2           2          3           2

     CC800h -      Pins 2 &   Pins 1 &    Pins 1 &   Pins 2 &    Pins 1 &
     CCFFFh           3          2           2          3           2

     CD000h -      Pins 1 &   Pins 2 &    Pins 1 &   Pins 2 &    Pins 1 &
     CD7FFh           2          3           2          3           2

     CD800h -      Pins 2 &   Pins 2 &    Pins 1 &   Pins 2 &    Pins 1 &
     CDFFFh           3          3           2          3           2

     D0000h -      Pins 1 &   Pins 1 &    Pins 2 &   Pins 2 &    Pins 1 &
     D07FFh           2          2           3          3           2

     D0800h -      Pins 2 &   Pins 1 &    Pins 2 &   Pins 2 &    Pins 1 &
     D0FFFh           3          2           3          3           2

     D4800h -      Pins 2 &   Pins 1 &    Pins 1 &   Pins 1 &    Pins 2 &
     D4FFFh           3          2           2          2           3

     D1800h -      Pins 2 &   Pins 2 &    Pins 2 &   Pins 2 &    Pins 1 &
     D1FFFh           3          3           3          3           2

     D4000h -      Pins 1 &   Pins 1 &    Pins 1 &   Pins 1 &    Pins 2 &
     D47FFh           2          2           2          2           3

     D5000h -      Pins 1 &   Pins 2 &    Pins 1 &   Pins 1 &    Pins 2 &
     D57FFh           2          3           2          2           3

     D5800h -      Pins 2 &   Pins 2 &    Pins 1 &   Pins 1 &    Pins 2 &
     D5FFFh           3          3           2          2           3

     D8000h -      Pins 1 &   Pins 1 &    Pins 2 &   Pins 1 &    Pins 2 &
     D87FFh           2          2           3          2           3

     D8800h -      Pins 2 &   Pins 1 &    Pins 2 &   Pins 1 &    Pins 2 &
     D8FFFh           3          2           3          2           3

     D9000h -      Pins 1 &   Pins 2 &    Pins 2 &   Pins 1 &    Pins 2 &
     D97FFh           2          3           3          2           3

     D9800h -      Pins 2 &   Pins 2 &    Pins 2 &   Pins 1 &    Pins 2 &
     D9FFFh           3          3           3          2           3

     DC000h -      Pins 1 &   Pins 1 &    Pins 1 &   Pins 2 &    Pins 2 &
     DC7FFh           2          2           2          3           3

     DC800h -      Pins 2 &   Pins 1 &    Pins 1 &   Pins 2 &    Pins 2 &
     DCFFFh           3          2           2          3           3

     DD000h -      Pins 1 &   Pins 2 &    Pins 1 &   Pins 2 &    Pins 2 &
     DD7FFh           2          3           2          3           3

     DD800h -      Pins 2 &   Pins 2 &    Pins 1 &   Pins 2 &    Pins 2 &
     DDFFFh           3          3           2          3           3

     E0000h -      Pins 1 &   Pins 1 &    Pins 2 &   Pins 2 &    Pins 2 &
     E07FFh           2          2           3          3           3

     E0800h -      Pins 2 &   Pins 1 &    Pins 2 &   Pins 2 &    Pins 2 &
     E0FFFh           3          2           3          3           3

     E1000h -      Pins 1 &   Pins 2 &    Pins 2 &   Pins 2 &    Pins 2 &
     E17FFh           2          3           3          3           3

     E1800h -      Pins 2 &   Pins 2 &    Pins 2 &   Pins 2 &    Pins 2 &
     E1FFFh           3          3           3          3           3

  Note: All Pins designated should be in the closed position.

                                 BOOT ROM

                Setting                                 J3

                  Enabled                       Pins 1 & 2 closed

                  Disabled                       Pins 2 & 3 closed

                               NODE ADDRESS

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

   0       -       -        -       -       -        -       -        -

   1      Off      On      On      On       On      On       On      On

   2      On      Off      On      On       On      On       On      On

   3      Off     Off      On      On       On      On       On      On

   4      On       On      Off     On       On      On       On      On

  251     Off     Off      On      Off     Off      Off     Off      Off

  252     On       On      Off     Off     Off      Off     Off      Off

  253     Off      On      Off     Off     Off      Off     Off      Off

  254     On      Off      Off     Off     Off      Off     Off      Off

  255     Off     Off      Off     Off     Off      Off     Off      Off

  Note:Node address 0 is used for messaging between nodes and must not be
  used.

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

          TOPOLOGY

   Topology         J6

     Star         Closed

  Linear Bus       Open

