SYSTRAN CORPORATION

SCRAMNET+ VME3U

NIC Type               Proprietary
Chipset                Systran Corporation
Maximum Onboard Memory 8MB DRAM
I/O Options            Bypass connector
Network Transfer Rate  150Mbps
Data Bus               VME
Topology               Linear Bus/Ring
Wire Type              RG-58A/U 50ohm coaxial

                       Fiber optic cable
Boot ROM               Not available

[Image]

                                CONNECTIONS

         Function             Label           Function            Label

  Auxiliary connector (see      J1      Fiber optic ST             W1B
  pinout below)                         receive connector 1

  Auxiliary connector (see      J2      RG-58A/U 50ohm             W2A
  pinout below)                         coaxial receive
                                        connector 2

  Bypass connector             J301     Fiber optic ST             W2B
                                        receive connector 2

  Daughterboard header         J302     RG-58A/U 50ohm             W3A
                                        coaxial transmit
                                        connector 1

  Memory card header           J305     Fiber optic ST             W3B
                                        transmit connector 1

  RG-58A/U 50ohm coaxial       W1A      RG-58A/U 50ohm             W4A
  receive connector 1                   coaxial transmit
                                        connector 2

  Fiber optic ST transmit      W4B      Header to main board       W5B
  connector 2                           J302

  Header to main board         W5A      Header to main board       W5C
  J302                                  J302

                                 J1 PINOUT

         Function              Pin             Function             Pin

  Not used                      1      External LED (see LED2        3
                                       in table)

  External LED (see LED1        2      Signal common                 4
  in table)

                                 J2 PINOUT

         Function              Pin             Function             Pin

  Not used                      1      External LED (see LED3        3
                                       in table)

  Message waiting signal        2      Signal common                 4

                        USER CONFIGURABLE SETTINGS

                   Setting                       Label        Position

  »   Chassis ground connected to signal          J3         Pins 2 & 4
      ground                                                   closed

      Chassis ground not connected to signal      J3         Pins 1 & 3
      ground                                                   closed

  »   EEPROM write protect enabled               J303        Pins 1 & 3
                                                               closed

      EEPROM write protect disabled              J303        Pins 2 & 4
                                                               closed

  »   EEPROM read protect enabled                J304        Pins 1 & 3
                                                               closed

      EEPROM read protect disabled               J304        Pins 2 & 4
                                                               closed

  »   Variable length packets disabled            J4         Pins 1 & 3
                                                               closed

      Variable length packets enabled             J4         Pins 2 & 4
                                                               closed

  »   Card is not software compatible with        J5         Pins 1 & 3
      ScramNET Classic cards                                   closed

      Card is software compatible with            J5         Pins 2 & 4
      ScramNET Classic cards                                   closed

  »   Control/Status register addressing is       S6         Position 6
      16 bits wide

      Control/Status register addressing is       S6         Position A
      24 bits wide

                 CONTROL/STATUS REGISTER ADDRESS SELECTION

  A total of 262,144 address settings are available. Switches S1 through
  S5 set the hexadecimal memory address. SW1 is the Most Significant
  Nibble and switch SW5 is the Least Significant Nibble, though the
  bottom two bits of SW5 are always 0. The switches have the following
  decimal weight values: SW1=1,048,576, SW2=65,536, SW3=4,096, SW4=256,
  SW5=16. Set the switches, multiply the number on the switch by its
  weight value, add the values obtained for each switch, and round down
  to the nearest multiple of 64 to obtain the correct memory address.

                          DIAGNOSTIC LED(S)

    LED        Color      Status               Condition

    LED1       Green        On         Network connection is good

    LED1       Green        Off       Network connection is broken

    LED2       Green        On         Carrier signal is detected

    LED2       Green        Off      Carrier signal is not detected

    LED3        N/A         On          Error condition detected

    LED3        N/A         Off       Error condition not detected

            Note:LED3 is only available via connector J2.