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Altera_Forum's avatar
Altera_Forum
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16 years ago

pin assignment problems,help!

quartus ii shows the following error: Error: Output or bidirectional pin out_port_from_the_led_pio[1] in pin location P12 (pad_105) is too close to VREF pin in pin location T11 (pad_106) Error:...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
16 years ago

Typically one of this cases brings up problems like you have reported:

- You have a development kit with a basically functional reference design and applied arbitrary changes without understanding exactly, how the design works.

- You let the MegaWizard generate a DDR RAM interface, but skipped some of the suggested steps.

- You tried to assign all location and IO-standards manually without understanding the requirements.

It's not clear from your post, which case applies here.