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Altera_Forum's avatar
Altera_Forum
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15 years ago

cyclone III unused inputs

Folks, I'm working on a Cyclone III design with a BT.656 video input interface. The FPGA will be used in two products - one with the BT.656 circuitry populated and one without it populated. W...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
15 years ago

Weak pull-up would be my standard option. The additional current consumption is quite low, so you can set them generally. Bus hold or pull-up can't be set at runtime however. At runtime, only driving the unused pin as output would be available to prevent floating.