SLVUC11 April   2021 DP83561-SP

 

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3.2.2 Mirror Mode

The DP83561EVM enables Mirror Mode by default. As can be observed in Section 8.4, due to the RJ45 orientation and routing on the board, the differential transmit and receive pairs orientation and polarity have been flipped on J27. Mirror mode must be enabled to correct this change, unless the link partner uses a similar routing and layout strategy, matching the differential pairs correctly.