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Altera_Forum's avatar
Altera_Forum
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18 years ago

Device Migration Tables?

Are there any spreadsheets or tools I can use to give me a pin file that supports migration between various devices?
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
18 years ago

When you enable device migration some of the IO pins become power and ground in the larger density devices. This isn't a big deal when the unused input is a reserved input and is attached to ground. I always thought it was a problem for Vccint attached to a reserved input since in Stratix II for example the VCCint is 1.2 volts. I thought this was in the linear region of the input transistors. I had elaborate board options to avaoid this problem.

My Altera FAE set me straight. Altera had planned for this so the switching threshold of the IO does not overlap the VCCint when connected to a reserved input.

I thought I would put this in the thread since I have seen this come up on other forums.