Hi Jaydev,
Thanks for your clarification that you are using the 10GBaseKR PHY IP in A10 devices. To facilitate further debugging, just would like to check with you on the following:
1. Just wonder if you have had a chance to try perform a loopback from A10 TX back to A10 RX to see if there is any issue with the Auto-Negotiation. Just to help isolating the 3rd party devices from our debugging.
2. If you are unable to perform serial loopback at the copper backplane, you may try to enable the internal serial loopback by writing to the phy_serial_loopback register at 0x461.
3. Just wonder if you have had a chance to try perform a Modelsim simulation to see if similar AN issue can be replicated in the simulation? This would be helpful to isolate any functional issue prior to hardware testing.
4. Mind share with me what is the top level signal that you observe anomaly before you signaltap the internal signals? For example, you are observing led_an not gettting asserted?
5. Please help to share with me the status signal at the IP top level so that I could have better understanding of the IP during issue occurence.
6. Please share with me you IP .qsys file so that I can have better understanding of your configuration.
Please let me know if there is any concern. Thank you.
Best regards,
Chee Pin
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