yagnik, I know it way late for this but if you cant get it sorted out you may want to try this. https://www.esp32.com/viewtopic.php?f=17&t=5479&start=30#p55405 You can dump U9 and its supported components, and make it much simpler. Yes you are right, I have added the XTAL footprint in my board. It ...

Hi yagnik, It's hard to say for sure from the images, and this is a bit beyond the support we normally provide on this forum. For the record, It is possible to request specific hardware support , but for a custom design like this it would be a paid service. Note that it doesn't seem like the proble...

Hi yagnik, You're right that unwanted 50 MHz harmonics are probably something to do with the Ethernet layout, and most likely the clock. I noticed that there is no termination on the E MAC_CLK transmission line, where it is driven by the buffer. This is probably the first place I would look, especi...

Hi, I have developed the ESP32 custom board with an ethernet interface. I used the LAN8720 PHY chip with ESP32. Taken a reference from olimax ethernet board. The board works fine but it was going to fail in FCC. As per my knowledge on my board, the only ethernet is operated at 50 Mhz. The configurat...

Hello, I m making an ESP32f custom board with ethernet. in ESP32 GPIO0 is multiplexed with serial programming mode and Ethernet clock. so I have a requirement to use Ethernet and Serial programming at the same time. I am communicating LAN8720 PHY chip for EMAC. I have found that GPIO17 also can be u...