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host's avatar
host
Icon for Occasional Contributor rankOccasional Contributor
3 years ago

Similar frequency clocks

My design has 2 clock domains defined as follows with the same waveform: create_clock -name clk_a -period 1.0 [get_ports clk_a] create_clock -name clk_b -period 1.0 [get_ports clk_a] The 2 clocks...
Nurina's avatar
Nurina
Icon for Regular Contributor rankRegular Contributor
3 years ago

Hello,


Can you provide the following information:

  • Quartus version
  • OS (Linux/Windows?)
  • Target device


To answer your question about uncertainties, the closest that I know of would be derive_clock_uncertainty.


You may find the below reports to be useful:

Report Clock Transfers: https://www.intel.com/content/www/us/en/docs/programmable/683243/21-3/report-clock-transfers.html

Report Asynchronous CDC: https://www.intel.com/content/www/us/en/docs/programmable/683243/21-3/report-asynchronous-cdc.html

Report CDC Viewer: https://www.intel.com/content/www/us/en/docs/programmable/683243/21-3/report-cdc-viewer.html


Does this help?


-Nurina