Hello,
for a board to board design with common ground two PHYs should be coupled together using capacitive coupling instead of using magnetics.
I'm looking for recommendations or an app note like this: http://www.micrel.com/_PDF/Ethernet/app-notes/an-120.pdf
It shows a schematic that uses 50 Ohm termination & 100nF as coupling capacitors, can this be used with a DP83865?
Is the termination also suited for the DM83865?
Regards,
Lo