From the Knowledge base:
With regard to the 802.11af (Power Over Ethernet) specification, do the Connect EM and ME families support end or mid-span PoE?
First one should clarify what is meant by mid and end-span.
Mid-span: +48VDC is delivered across the Ethernet cable using the unused pins (4, 5, 7 & 8).
End-span: +48VDC is delivered on on the same pins used for data (1,2,3 and 6).
The Connect ME supports only mid-span.
The Connect ME 9210 supports both mid-span & end-span.
The Connect EM module, itself, does not provide any support for PoE. However, using the version of the module with no onboard Ethernet connector (P/N DC-EM-02T-NC) a full PoE implementation is possible. The EM development board, however, only provides support for mid-span.
Does this mean that the pins VETH+ AND VETH- are the CT pins combined from both the end-span pins (12,3, & 6) and mid-span pins (4,5,7 & 8)?
On the development board & PoE schematics there’s a 4 pin connector going to the PoE board but I see only the 2 pins (VETH+ & VETH-) connected to it. If I were to do something similar on one board could I then leave out the other two connections with the extra diode bridge?
Thanks