Implementing a H1102NL (magnetics) and a W5500 chip on a PCB

Question

Hi, I'm trying to implement the W5500 IC on a PCB, to add ethernet connectivity to the RP2350 chip. I've made the following schematic: This design has been heavily based off of the available reference schematic. When trying to turn this into a PCB design, I've struggled with getting the ethernet traces routed right: I'm using a Neutrik NE8FAH ethernet connector, which does not have integrated magnetics requiring me to use a transformer like the H1102NL. Is my routing good like this, or should I fix this by switching the TX and RX pairs around? I could turn my schematic into this: (quick and dirty switch, but should get m point across). This would significantly simplify my PCB, and hopefully improve my odds of getting ethernet working.

jaden · Answer

As you mentioned, routing TX to pins 1 and 3, and RX to pins 6 and 8 of the T1 (H1102NL) is considered the best approach. If you need a review after routing, please feel free to share the Gerber files. If you're hesitant to share them publicly, you can send them directly to Jaden@wiznet.io. Thank you.