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zjj's avatar
zjj
Icon for Occasional Contributor rankOccasional Contributor
4 months ago

scfifo ip with mlab

I instantiated the agilex7 scfifo IP,  and the fifo paremeter as follow: width is 1024  depth is 4,  the use_eab is on, ram_block_type is MLAB. but I find the scfifo is infer to M20K from the ram s...
Compilation
wa_itd's avatar
wa_itd
Icon for New Contributor rankNew Contributor
4 months ago

How are you checking what it inferred? You should be able to find it in the compilation report, then RAM summary.

Not sure if it makes a difference, but try using lowercase, and don' tuse the ternary operator, just put "mlab".

Check Quartus warning messages - if it's been unable to generate something as MLABs, it will give you a warning. You haven't overridden the value anywhere? Haven't created an scfifo component yourself?

Let me know if you find anything :-)

zjj's avatar
zjj
Icon for Occasional Contributor rankOccasional Contributor
4 months ago

Yeah，I find  the scfifo with mlab is inferred to M20K by the compilation report.  But other some scfifo with mlab is normally inferred to MLAB.  I'm sure that the parameter has not been overridden.  so I am confused.

 

 

 

  • ShengN_altera's avatar
    ShengN_altera
    Icon for Super Contributor rankSuper Contributor
    3 months ago

    May I know do you have any further concern?

  • wa_itd's avatar
    wa_itd
    Icon for New Contributor rankNew Contributor
    2 months ago

    Is it possible you have used the extent of your MLAB resources? In this case the compiler might ignore your directive asking for "MLAB" and just use whatever it has left available. Perhaps it is generating a warning of some kind.