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Altera_Forum's avatar
Altera_Forum
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10 years ago

Can't ECO modify PLL's properties of Cyclone V devices?

Hi guys,

I want to make some small modification on PLL of Cyclone V devices. However, it seems i can't do anything thru ECO on it as altera previous generation deivces (for example Cyclone III). Why?

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  • Altera_Forum's avatar
    Altera_Forum
    Icon for Honored Contributor rankHonored Contributor
    10 years ago

    This is a Cyclone V hardware issue, not something that could be changed with a Quartus update. As far as I know the reconfiguration scheme is the only way to adjust clock phase. It can't be done dynamically like the Cyclone IV and before. Re-configuring and waiting for it to lock again is the only way I know of.