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Smaller Cyclone IV E devices or package options (E144 and F256 packages) do not have the MSEL[3]pin. The AS Fast POR configuration scheme at 3.0- or 2.5-V configuration voltage standard and the AP configuration scheme are not supported in Cyclone IV E devices without the MSEL[3]pin.
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Although it states AS Fast POR isn't supported without MSEL3, AP isn't either. So, it certainly appears not to be covered in the documentation. However, it clearly works. Whether you get a 'Fast' or 'Standard' POR delay is probably anyone's guess.
Despite the Nano design example, I recommend you follow the docs. I have a Cyclone IV design in front of me that does just that - it works perfectly. I think it somewhat foolish of Altera/Terasic to release a board, which will clearly be used as a reference design, with an apparently(*) undocumented configuration scheme.
Cheers,
Alex
(*) Perhaps it is covered, but I can't find it...!
Honored Contributor
