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Altera_Forum
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11 years ago

Pin assignment De-1 SoC board

Hi Altera forum, I was trying to use certain pins on my dev board, but Quartus tells me it cant assign the 25MHz clock and DDR3 pins "they are reserved for the programmer pins". Which is bogus ...
Altera_Forum's avatar
Altera_Forum
Icon for Honored Contributor rankHonored Contributor
11 years ago

I used the assignment editor to give it 85 Ohms of OCT, it compiled but no luck. Any help would be greatly appreciated.. Cant possibly mean I have to dedicate an entire GPIO header to this issue?

Error (14566): Could not place 2 periphery component(s) due to conflicts with existing constraints (2 pin(s))

Error (175020): Illegal constraint of pin to the region (89, 69) to (89, 80): no valid locations in region

Info (14596): Information about the failing component:

Info (175028): The pin name: WE

Info (14597): No legal location could be found for this component out of 1 considered location(s). Reasons why each location could not be used are summarized below:

Error (184016): There were not enough single-ended output pin locations available (1 location affected)

Info (175029): C28

Info (175015): The I/O pad WE is constrained to the location PIN_C28 due to: User Location Constraints (PIN_C28)

Info (14709): The constrained I/O pad is contained within this pin