Help with A10 Backplane Auto Negotiation

Hi Jaydev, Thanks for your update. As I understand it, when you enabled the internal serial loopback, the AN seems not working as well. This could help to isolate out 3rd party modules and allow us to focus in A10 device itself. For your information, as I search through the web, I found some A10 10G example designs as following: https://fpgawiki.intel.com/wiki/Arria_10_Transceiver_PHY_Design_Examples#1G.2F10GbE_and_10GBASE-KR_PHY_Design_Example Since you have narrow down to A10 device with serial loopback, it would be great if you could further look into these designs to see if you can find anything useful. These designs seems to be for older Quartus version but you can try to refer to see if it helps. I believe the first milestone to achieve would be to get a one channel 10GBaseKR PHY to simulate successfully and out from AN. Please let me know if there is any concern. Thank you. Best regards, Chee Pin