Connecting two ethernet MACs without PHYs

Thread Starter


Joined Oct 10, 2020

I am designing a board that utilizes an NXP LS1046a processor and multiple Kintex Ultrascale FPGAs. The plan is to connect the processors up to the three FPGAs via the 1Gbe links.
Since they are all on the same board, the plan was to try and connect them up without using any PHY devices, only MAC-MAC communication.

Has anyone ever done this? Do you know if this will work?

Any insight would be appreciated!