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uio[6] appear to be shorted to the 3.3v rail #19

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proppy opened this issue Jan 15, 2025 · 1 comment
Open

uio[6] appear to be shorted to the 3.3v rail #19

proppy opened this issue Jan 15, 2025 · 1 comment

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@proppy
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proppy commented Jan 15, 2025

Board: TinyTapeout 4+ Demo Board OSHWCA000047

I noticed that uio[6] was always pulled up and when testing w/ a contact tester and the board unplugged and it appear that it is statically connected to the 3.3v pins of the Project I/O PMODs.

Any ideas to troubleshoot further?
@mattvenn
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mattvenn commented Feb 27, 2025 •
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Did you resolve this? It's not something we've seen on other boards, and we run a test in the factory that should catch this. So have you made any mods or got a PMOD in use that could be doing this?

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@proppy @mattvenn