I´m developing a custom board with TM4C1294 and this board has ethernet funcionatily. The problem is that TM4C ethertnet pins are connected throught a internal cable to another board likes a backpanel. This board has a ethernet hub IC and from them there are another 2 ethernet external ports. The ethernet HUB IC is working. I removed the transformer from Launchpad and solder wires from transformer inputs to my HUB IC inputs and it works fine. But when I try to do the same with my board, the link is not establed. I´ve check 25Mhz crystal with a scope and the frequency is fine. Another peripherals are working except ethernet.
Could anybody helps me?
