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- Enables for if main board is supplying 3V3 so sub-boards dont need it?
- Or just keep different, Isolated 3V3 for each board
- Can't really do this because XMC is gonna attach to all three stacked boards
- If the boards are individual, the 3V3 still needs to be there to power XMC
- Can't really do this because XMC is gonna attach to all three stacked boards
- Would be cool if they could work independently with their own XMCs, or stacked
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