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Altera_Forum's avatar
Altera_Forum
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15 years ago

Frequency of StratixIV

Hi, I'am so sorry if there are some mistakes in english. I try to modify the frequency of StratixIV (used the PLL in SOPC builder), always, i obtained with the clock tools the same frequency ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Hello Aflouton,

Can you post your timing constraints file?(*.sdc file) Does it have the following lines in it: derive_pll_clocks -create_base_clocks? Have you regenerated the SOPC project after you have modified the PLL? Have you recompiled the project after you have modified the PLL in SOPC builder?

Thanks,

Ben