Forum Discussion
AEsqu
Contributor
Contributorhuge delay inserted by Quartus 19.3 pro on the Arria 10 FPGA
Hello, I see a huge delay inserted by Quartus 19.3 pro on the Arria 10 FPGA. This was not seen in the stratix III FPGA using quartus 13.1. I will attach the picture showing this. This lead to hug...
AEsquContributor
ContributorHi sstrell,
I tested with global clock usage and that solves the mess for that clock.
But then on the next clock gating that follows that clock there are again extra 3 ns extra delay.
For some reason the Quartus 13.1 and/or stratix III was handling the clock gating much better than with quartus 19.3 and/or the Arria 10.
Our design has definition for about 200 clocks and have thousands of clock gating (low power).
Attaching a picture of the next long routing for the next clock gate after the global clock point.
