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Altera_Forum's avatar
Altera_Forum
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11 years ago

problem in interfacing

Hi all, can any one suggest me how to interface altera cyclone 3 fpga starter kit( EP3C25F324 ) and ti daughter card ( SDALTEVK/NOPB ). i have both boards. when i see both schematic diagram the...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

If, as you say, it worked before you'll have to work out what it is you've changed to break it...

Have you added any other constraints? There are plenty of conflicting constraints you could add that would stop Quartus from being able to use the pin you've selected. Have you accidentally removed the 'IO_MAXIMUM_TOGGLE_RATE "0MHz"' settings?

Cheers,

Alex