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Altera_Forum
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12 years ago

ALTDDIO Megafunction question

Hi all! I'm working with ALTDDIO megafunction. I use DE2-115 Dev Board which means Cyclone IV is an FPGA I'm dealing with. As I understand then I use ALTDDIO_IN Quartus should implement t...
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Altera_Forum
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12 years ago

Thank's a lot, FvM!!

Actually that info exists in handbook.

I was bluffed by the ability of creating own atoms, because in that case I thought I can use DDIO device resourses in input mode.

But as I realize in Cyclone IV DDIO implemented in I/O element registers only if I use DDIO_output mf, there is no dedicated I/O resourses for input data.

The only question is why such inequality take place.