I’m planning to connect two Arty boards via a differential serial (SPI-like) interface to evaluate high-speed differential communication between the two FPGAs. I thought about using the high-speed pmod connectors and the TMDS_33 IOSTANDARD as suggested in this https://forum.digilentinc.com/topic/1728-arty-selectable-25v-io-banks-for-lvds/ discussion. Is this feasible? As far as I understand, I have to develop a pmod connection board with 50 Ω pull-up resistors on the TMDS_33 inpu