How to remove the Unused_RX_Clock_Workaround_PMR_CDR_PLL which inserted by Quartus Prime fitter ?

Dear KJian6,

Based on my understanding, you are referring to “Transmitter PLL” in the GXB Report.

To get rid of these unused PLLs you need to turn OFF the “ENABLE_UNUSED_RX_CLOCK_WORKAROUND ON” in your .QSF as below and re-compile your project.

set_global_assignment -name ENABLE_UNUSED_RX_CLOCK_WORKAROUND OFF

set_instance_assignment -name ENABLE_UNUSED_RX_CLOCK_WORKAROUND OFF -to <pin name>

After compilation, you should able to see the Total PLLs number decrease and there is no Transmitter PLL generated in your Fitter report.

I sincerely hope this helps.

Thanks

Regards,

NAli1