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MoZdk's avatar
MoZdk
Icon for Occasional Contributor rankOccasional Contributor
5 years ago
Solved

Why does Cyclone 10 LP FPGAs not have a fast and warm corner in the multi-corner timing analysis in Quartus?

The Cyclone 10 LP FPGA does only have a 3 corner timing analysis for the multi-corner timing analysis, where for example Cyclone V FPGA has the usual 4 corner timing analysis, with (slow, fast) x (co...
  • KennyT_altera's avatar
    KennyT_altera
    5 years ago

    Does this mean, that the Intel FPGA engineers have determined, that the multi-corner timing analysis is reliable without the fast and warm (85C) corner?

    Yup, that is correct. If you pull out the cyclone IV. It does not have fast and warn (85C) corner as well.

    Or do we have to wait for modelling of the fast and warm (85C) corner before we can do final timing sign-off on and thereby production release of our design in a Cyclone 10 LP?

    You do not need to wait for it as even old device like Cyclone IV does not have this.

KennyT_altera's avatar
KennyT_altera
Icon for Super Contributor rankSuper Contributor
5 years ago

Hi,

This is not a bug, the reason it there are no modeling on this fast 85C corner by Intel FPGA engineer. We are sorry to inform this.

Usually, we would focus on most pessimistic (slowest) model which is the "Slow 1200mV 85C Model."

Only certain device family we do modeling on Fast 1200mV 85C model.

Thanks

  • MoZdk's avatar
    MoZdk
    Icon for Occasional Contributor rankOccasional Contributor
    5 years ago

    Hi KennyT,

    Thanks for the answer.

    Does this mean, that the Intel FPGA engineers have determined, that the multi-corner timing analysis is reliable without the fast and warm (85C) corner?

    Or do we have to wait for modelling of the fast and warm (85C) corner before we can do final timing sign-off on and thereby production release of our design in a Cyclone 10 LP?