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Altera_Forum's avatar
Altera_Forum
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15 years ago

Help me about measure clock on osciloscope.

Hi everyone, I have project on board DE2. I use PLL in megafunction to create the clock 500MHz from 50MHz. Then i use clock counter to decrease the clock from 500MHz to clock_out 250KHz, 125KHz, 6...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

I tested my design , 500MHz my design failed, but smaller 250MHz is ok.

I also mapped clock_out to the LEDR[0] for testing, when i use switch to change clock_out the LEDR[0], the speed blink of LED also changed, it proved that the clock_out had change.

"Did it pass timing requirements?" -> what u mean? require on osci or on design.:d