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Altera_Forum's avatar
Altera_Forum
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17 years ago

cascade pll on stratix II

Hi

I have a question : is it possible to connect an enhanced pll input to the fast pll output on the stratix II device?

Another question : is it possible to connect one fast pll to another one,

on the opposite side of the chip (suppose pll1 to the pll3)?

thanks

1 Reply

  • Altera_Forum's avatar
    Altera_Forum
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    17 years ago

    I thought PLL cascading was allowed for only certain PLL combinations, but I didn't find that with a quick check of PLL cascading references in the device handbook.

    To answer questions like these, I typically create a simple test case to try it in Quartus with something that compiles fast.