Skip to main content
Associate
February 20, 2025
Solved

No ETH Connectivity Option for STM32F779

  • February 20, 2025
  • 2 replies
  • 592 views

I cannot find the ETH connectivity option in the Pinout & Configuration window. It is listed as an option in the datasheet, and pins are given for the various MII options. 

What can I do to configure the MCU with a RMII interface to an external PHY chip?

jcGTRI_0-1740070191837.png

jcGTRI_1-1740070353410.png

 

 

Best answer by TDK

The WLCSP180 package (STM32F779AIY) doesn't break out an ETH_MII_RXD0/ETH_RMII_RX, so ETH isn't possible.

TDK_0-1740151549833.png

 

2 replies

TDK
Super User
February 20, 2025

It's there on more recent versions of STM32CubeMX.  v6.8.1 is quite old.

TDK_0-1740070917609.png

 

"If you feel a post has answered your question, please click ""Accept as Solution""."
jcGTRIAuthor
Associate
February 21, 2025

Hello. This did not solve my problem. I installed the latest CubeIDE and CubeMX but my specific MCU does not have eth connectivity there in either instance. STM32F779AIY. Am I interpreting the datasheet incorrectly, and this chip does not in fact have ethernet (RMII or MII) connectivity? 

jcGTRI_0-1740148786002.png

jcGTRI_1-1740149306548.png

 

 

TDK
TDKBest answer
Super User
February 21, 2025

The WLCSP180 package (STM32F779AIY) doesn't break out an ETH_MII_RXD0/ETH_RMII_RX, so ETH isn't possible.

TDK_0-1740151549833.png

 

"If you feel a post has answered your question, please click ""Accept as Solution""."