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RMII communication stops when unrelated pin is switched to Out (Mic)

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Setup:PIC32MX795F512H => Harmony v2.06 => RMII => LAN8740A After quite a bit of hassle to get everything working fine. I tried as per advice of the datasheet to switch all remaining non-used ports to Out. Suddenly the RMII stopped working (MDC and MDIO ke..

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