Espressif ESP32-Ethernet-Kit Getting Started Manual page 7

. ESP32 Pin (MAC)
8 GPIO23
9 GPIO18
PHY Reset
10 GPIO5
 Note
Except for REF_CLK, the alloca on of all pins under the RMII Interface is fixed and cannot be
changed either through IOMUX or GPIO Matrix.
GPIO Header 1
This header exposes some GPIOs that are not used elsewhere on the ESP32-Ethernet-Kit.
. ESP32 Pin
1 GPIO32
2 GPIO33
3 GPIO34
4 GPIO35
5 GPIO36
6 GPIO39
GPIO Header 2
This header contains the GPIOs with specific RMII func onality (except GPIO2). Depending on
the situa on, specific Ethernet applica ons might require this func onality.
. ESP32 Pin
1 GPIO17
2 GPIO16
3 GPIO4
4 GPIO2
https://docs.espressif.com/projects/esp-idf/en/latest/hw-reference/get-started-ethernet-kit.html
IP101GRI (PHY)
MDC
MDIO
Reset_N
RMII Func on
EMAC_CLK_180
EMAC_CLK_OUT
EMAC_TX_ER
n/a
Comments
See note 1
See note 1
See note 2
7/10