ESP32 Ethernet RMII pin reference

According to the ESP32 reference manual, section 4.10, Table 4-3, the following pins are relevant for Ethernet using the RMII interface:

[table id=4 /]

Note that typically theĀ EMAC_CLK_180 pin is used to let the ESP32 create a clock internally using its PLL and output it to the PHY.

For an example schematic using the ESP32 EMAC with RMII interface, see the Olimex ESP32-POE schematic or the ESP32 Ethernet Kit v1.2 schematic