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We follow up TI DP83867 reference design to plan the layout phase but we had met a problem about RJ45's DM、DP layout trace overlap/crossover issue！
After that, we had found the document of snlu190 and dp83867_circuit, its layout of RJ45 is very smoothly as below figure.(pg3 & pg12)
But its connection method of DM & DP are all different, you can observe that J13 & J4 were be connected to the different pin out.
Ex：J4'spin1 and pin2 were connected to T1's pin13 and pin14 but J13's pin7 and pin8 were connected to T1's pin13 and pin14.
Are these connection method for let layout can be smoothly？How can I do that can let DP & DM layout smoothly to avoid overlap/crossover？
Or it can internal adjust by the software setting？
CTS (Clock & Timing Solutions) Systems Engineer
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In reply to Rob Rodrigues:
The mirror mode pair swapping is described well in the data sheet. A->D and so on.
Polarity swapping is not mentioned.
Examining the DP83867ERGZ reference design it looks like polarity swapping is supported Ap->Dn, An->Dp.
Can you verify that the pairs and the polarities are swapped in mirror mode?
In reply to Barry W:
Ethernet - Applications Engineer
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