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FATTY_WANG's avatar
FATTY_WANG
Icon for New Contributor rankNew Contributor
2 years ago

How do I cascade third PLL in my design?

Hello,

I need to cascade the third iopll in my design.

Is it legal? I had ever seen the guidance that you could just cascade two pll.

Compilation

3 Replies

  • FvM's avatar
    FvM
    Icon for Super Contributor rankSuper Contributor
    2 years ago

    Hi,

    the question title suggests that Quartus prevents double PLL cascading. Is it so?

    Apart from this point, I didn't yet came across a situation where I had need to cascade three PLLs. What's the specific problem?

  • AqidAyman_Altera's avatar
    AqidAyman_Altera
    Icon for Regular Contributor rankRegular Contributor
    2 years ago

    From what I am aware of, there is mentioned in the user guide that the you can cascade a maximum of two PLLs. If I am not mistaken it is for Stratix 10 device.


  • AqidAyman_Altera's avatar
    AqidAyman_Altera
    Icon for Regular Contributor rankRegular Contributor
    2 years ago

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