No link with PoE+ jack (integrated magnetics)

Question

I designed a circuit using W5500 and a PoE+ enabled jack with integrated magnetics. I am unable to establish a link and I suspect that the magnetics and bias circuit are not compatible. Do you have any reference designs for PoE+ magnetics with W5500? I have seen this project but the schematic is too small to read: https://maker.wiznet.io/Alan/projects/raspberry%2Dpi%2D5%2Dpoe%2Dhat/ I have attached my schematic and the magnetics of the PoE+ jack - note that all PoE+ jacks use the same magnetics, where the common mode choke is AFTER the transformer. Here is a link to the images https://imgur.com/a/LDkLVlW I can communicate over SPI and I confirmed the oscillator is running at 25MHz. I have tried bridging TCT and RCT with no luck. I have also tried removing the capacitors C29 and C30. I have tried auto-negotation and forcing 10BASE-T, neither works. I am able to get power from the switch when I use a PoE switch. I have also tried with a non-PoE switch and I get no link. Can you give ideas or reference designs for PoE+ jacks? Thank you!

Alan · Answer

Sorry. We do not provide a reference for PoE+. You may purchase and use a PoE+ module separately. However, please understand that we cannot provide support for developing your own PoE+ module.

cholin · Answer

Nevermind, I was able to diagnose the issue - the magnetics work perfectly with no other changes required.