Error (15653): The Fitter cannot find a legal configuration for the following atoms - Error (15653): The Fitter cannot find a legal configuration for the following atoms Arria 10 Error (15653): The Fitter cannot find a legal configuration for the following atoms. Update any outdated transceiver PHY IP cores, correct any illegal pin assignments, and then recompile your design Error (15744): In atom 'ALTERA_RESERVED_FITTER_INSERTED_PMA_UC1' Error (15744): The settings must match one or more of these conditions: Error (15744): ( prot_mode != UNUSED ) OR ( vod_output_swing_ctrl == 0 ) Error (15744): But the following assignments violate the above conditions: Error (15744): prot_mode = UNUSED Error (15744): vod_output_swing_ctrl = 27 How can I resolve this bug? Thanks Replies: Re: Error (15653): The Fitter cannot find a legal configuration for the following atoms Alright, I am glad that issue is resolved at your end ! Replies: Re: Error (15653): The Fitter cannot find a legal configuration for the following atoms Hi, I find the code bug that the phy output port did not connect to any port. Thanks for your reply. Jamie Replies: Re: Error (15653): The Fitter cannot find a legal configuration for the following atoms Hi, From the error log that you shared, I can see below 2 possible issues Is your NativePHY IP updated to match with your Quartus version ? If not then pls regenerate your NativePHY IP again Your PMA output VOD setting maybe causing some issue ? Open your NativePHY IP to cross check again to ensure there is no warning or error message Try out different output VOD setting I can help you to review your design if you can share your design QAR file here. Thanks. Regards, dlim