Altera_Forum
Honored Contributor
Honored ContributorBidirectional pin
Hi :) I've heard that integrating bidirectional pins for an FPGA device is expensive. Is there any way that I would know how many inout pins supported for an FPGA chip?
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Altera_ForumHonored Contributor
Honored ContributorWhat exactly do you mean by expensive? the pins on the chips all have IO buffers to allow bidirectional ports, and so are essentially "free".
But you should never have bidirectional ports inside the logic of the FPGA as there are none inside the device, and so any in your code will be converted to muxes.
