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DP83TG720S-Q1: MDI circuit different from the othe chipset

Part Number: DP83TG720S-Q1

As shown in the following figure, we find that the circuit of other chip schemes is different from yours.

The circuit&layout is different, and the device parameters are also different.We know that symmetry is very important for mode conversion,

I think the circuit is better than DP38TG70.How to design this circuit ,how caculate the parameter?