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Gauthier_Auvray's avatar
Gauthier_Auvray
Icon for New Contributor rankNew Contributor
3 years ago

FPGA configuration FPP

Hello, What happen if we configure a FPGA (CycloneIVGX) in FPP mode (RBF file written by microprocessor) with a file generated for the wrong package? Should we detect it by monitoring nSTATUS/CONF_D...
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NazrulNaim_Intel's avatar
NazrulNaim_Intel
Icon for Regular Contributor rankRegular Contributor
3 years ago

Hello,

Technically you cannot use the same programming file across different packages as the pin's locations are different on each package.

You may perform the migration across the devices within the same package type as you can see in the table below:

Perhaps you may need to update the pin assignment in your design on a different package type.


Hope that answers your question.

Regards,

Nazrul Naim


  • FvM's avatar
    FvM
    Icon for Super Contributor rankSuper Contributor
    3 years ago
    Hi,
    I believe the latest response doesn't answer the question. As far as I understand, you are asking about the same FPGA chip used in different packages. So "what happens"? The chip can't know which package it is mounted in, it will accept the configuration file although the pin mapping is possibly different. Effects may be different, including possible damage of FPGA or external hardware. You need to analyze the chip to package pin mapping to predict the effects. Unfortunately it's not directly specified for all FPGA series.
    It's probably possible to identify the external connection in your FPGA code, disable outputs and signal an error in case of misconfiguration.