I need to connect several XMC4800 on the same board and it would be great to only have two PHY chips, at the beginning and at the end of the Ethercat chain.
It seems it can be done, page 33: https://download.beckhoff.com/downlo...nology_2i2.pdf

I wired two relax boards in that way, but it doesn't work right now. I can provide details if needed.

- Is it supposed to work, or is there something basic that prevents it?
- Does the driver code needs to be changed? Following Beckhoff recommendation I set enable_enhanced_link_p1 : 0; in xmc_ecat.h and TX shift to 10 ns in DAVE ESC app. Is it enough?
- Any hint on how to debug this circuit?

Best regards.