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Altera_Forum's avatar
Altera_Forum
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10 years ago

How to set to 0 value unconnected input pin?

Hi! In my design, some FPGA inputs could be left unconnected. But the value of this unconnected pins must be 0. I've found out that by default this pins are set to 1. So it is force me to con...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
10 years ago

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Unconnected pins are those not used by you (not wired internally) so the unused options don't apply to your case.

You can apply '0' internally provided you have some switch tied up to the connector. when connector is in it drives the pin else it is driven internally by your logic.

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Thank you! It is clear to me now.