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Altera_Forum
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12 years ago

Cyclone V - Megafunction "ALTIOBUF" Error

hello, i have some problems using QuartusII megafuction "ALTIOBUF". <I'm using Cyclone V(Cyclone V GX Starter Kit) and Quartus 13.1> I create a new megafunction(ALTIOBUF-select 'As an output ...
Altera_Forum's avatar
Altera_Forum
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12 years ago

Ah, I see. You need to register both data and oe outside of the primitive - neither can come directly from I/O pins. Refer to figure 1-4 in the same document. It refers to them as 'optional registers' but I don't understand how, in practice, you can get away without them.

Regards,

Alex