I have a home made card woth a QSFP28 (100Gb) .
I used the 100G Ethernet IP (include GT subcore in core) ( to connect my card with a commercial NIC card.
Everything works well ( Rx-aligned , transfer data,......)
I want to split the 100G Ethernet IP (include GT subcore in example design) to have more control to the GT core (PRBS, PCSreset,....)
I follow the example design to implement the 100G + GT IP cores. It seems that clocks are ok, but the 100G never get the rx_aligned signal at '1'??
nb: (I can transmit data over the link , but I receive nothing, rx_aligned all the time '0')
I beleive you are facing an issue which is listed in the below AR, if so, the issue has been fixed in latest version of vivado.