There is a problem with a board created by me. It uses ESP32-WROOM-32 attached to a LAN8720A. The LAN8720A never produces an output clock on it's pin 14 (nINT/REFCLKO) as expected which is connected to IO0. Pin 2 (LED2/INTSEL) has a pull-down resistor as required. This will create the 50MHz clock fr...