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Honored Contributor
Honored ContributorClocking on EP3C16 chips?
I'd built a prototype of a design using the 25K LE Cyclone III chip (EP3C25...) it was working well and since we'd fit into the 16K chip we decided to migrate the design to that one before going into...
Altera_ForumHonored Contributor
Honored Contributor --- Quote Start --- I can scope it and see 50 Mhz going toward the pin (we're using a UBGA so I can't access the ball itself)... I've got three boards and they all test the same way so I don't think that it's a component / manufacturing issue. --- Quote End --- It could be a problem with fabrication of the raw board. If you have an unpopulated board, check that you have continuity from the point you scoped on the assembled board to the pad for pin A11.
