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Altera_Forum's avatar
Altera_Forum
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18 years ago

help about cycloneII!!!!

hi all I'm using the cycloneII(EP2C20Q240C8).I want to know how to use the pin of PLL_OUTn IN the pin sheet,pin description of PLL_OUTn is:Optional negative terminal for external clock outpu...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

thank you for your help!

I use PLL1_OUTp as single ended clock output(sdram_clk) and PLL1_OUTn as sdd3 of sdram in my design.It doesn't work.If I use PLL3_OUTp as sdram_clk and unuse PLL1_OUTp ,sucessful!!!!

But why?