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Hello all, I have been trying to figure out how I would do fast ethernet through the rj45 that came on the dragon. I think I have the fast ethernet part figured out but am stumbling on the way the port is wired to the fpga. In the schematic it shows P76 and P77 are TD+ and TD- respectively, but RD+ and RD- are wired together through a couple of resistors to P80. My very rudimentary electronics experience leads me to believe(possibly fallaciously) that this converts it from differential IO to single ended. My problem is then how to decode MLT-3(3 line levels -1, 0 and +1) from a single ended IO(0 and 1).

Is fast ethernet even possible? If so, what have I missed or misunderstood?

Please someone throw me a bone here! Even if its just to say that I am a dumbass that needs to put down the soldering iron before I kill someone!

100BASE-T is probably not possible with the simple electronics that is on Dragon, especially the receiving part would require the ability to receive the three levels instead of two for 10BASE-T.