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Altera_Forum
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15 years ago

why warning "Missing drive strength" ?

Hello all, I am a beginner of Altera FPGA. Today I wrote a simple project with Quartus II 10.0. I set the device as EP3C25, then I wrote a simple VHDL, assigned the location and IO standard. Wh...
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Altera_Forum
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15 years ago

Drive strenght is the maximum current that the pin can drive.

In modern FPGA this is programmbale.

If you don't set the value you get a warning saying that a default value (probably the highest current) has been set.

This is not a problem unless you don't have signal integrity problems

in the integration of your FPGA on the final board.

I think that when you don't get the warning is because the value is not programmable