CABLETRON SYSTEMS, INC.

T2015

NIC Type      Token-Ring
Transfer Rate 4/16Mbps
Data Bus      16-bit ISA
Topology      Ring
Wiring Type   Unshielded twisted pair

              Shielded twisted pair (DB-9 port)
Boot ROM      Not available

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                               CLOCK SOURCE

                  Setting                                JP1

  »        Clock on card (Asynchronous            Pins 1 & 2 closed
                   operation)

           Data bus clock (Synchronous            Pins 2 & 3 closed
                   operation)

  Note: On some systems the data bus timing is not truly IBM PC/AT
  compatible. If the card is not
  initializing, using the data bus clock may allow the card to operate
  properly.

        I/O BASE ADDRESS

  Address    SW1/1      SW1/2

   0A20h       On        On

   0A80h      Off        On

   1A20h       On        Off

   1A80h      Off        Off

[Image]

                             DIAGNOSTIC LED(S)

     LED         Color          Status                Condition

    LED1         Yellow           On         Data is being transmitted or
                                                      received

    LED1         Yellow          Off        Data is not being transmitted
                                                     or received

    LED2         Green            On         Network connection is good

    LED2          Red             On        Network connection is broken

    LED3         Green            On             Card is set to 4Mbps
                                                      operation

    LED4         Yellow           On            Card is set to 16Mbps
                                                      operation

  Note:LED2 is a two color LED. LED2 will light red when power is first
  applied to the card.