Forum Discussion
EMIF Cyclone 10 GX: emif_usr_clk frequency incorrect
- 5 years ago
In the top.sdc you are setting pll reference clock as 50Mhz and this causes the incorrect emif_usr_clk frequency. Please remove the following constraint from sdc then you should see the correct clock frequency in the report. The pll reference clock frequency is defined in the IP sdc.
create_clock -name {clk_emif} -period 20.0 [get_ports {emif_clk_clk}]
Yes, exactly as I logged. Sorry, I forgot to change the reference clock back away from 50MHz before generating the qar.
Would you please set the emif pll reference clock to 200MHz, then you should see the effect.
In the top.sdc you are setting pll reference clock as 50Mhz and this causes the incorrect emif_usr_clk frequency. Please remove the following constraint from sdc then you should see the correct clock frequency in the report. The pll reference clock frequency is defined in the IP sdc.
create_clock -name {clk_emif} -period 20.0 [get_ports {emif_clk_clk}]
- Schroeti5 years ago
Occasional Contributor
That's it.
Thank you!