How to use 4x10g phy as bare 40g phy without MAC ip

Hi dlim.

“xgmii" signals names is inherited from my 10G test where parallel data(64b) and control signals(8 bit) forms xgmii standard signals right from NativePHY IP. In 4x10g there is only 256b parallel data and 8b control signals which are split to my signals named “xgmii”.In conclusion - it's same data that I am getting on parallel output of NativePHY IP.

I implemented simple reconciliation logic based at 10g which is sending 0x9c000002 on tx when local fault detect or idle “0x07..” when remote fault detected (ug_32b_10g_ethernet_mac.pdf, page 58, XGMII Error Handling (Link Fault) ).

No matter what I put on tx data input, output of NativePHY IP in my 4x10G config is stuck at local fault. I was expecting at least random values after 'hi' on rx_ready and pushing random data on tx but nothing change. There is a difference only when I put ‘X’ on tx data because then serial is not generated and rx_ready fall to low.