Re:PCB Layout Guidlines for Ethernet?

We also need some more information regarding the selection of the ethernet magnetics. There are a lot of choices out there and virtually no guidance with respect to the particular needs of the Luminary PHY.

Put another way... Can anyone tell me what factors were used in the selection of the part used on the LM36965 Evalutation Board? It uses a Pulse J3011G21DNL - See http://www.pulseeng.com/products/datasheets/J409.pdf

Here is one source of info. See the curious comments on slide 46 of http://www.scvemc.org/files/Ethernet_Magnetics_EMI.pdf
(his diagram seems reversed, however)

Is there a better choice of information out there?