STM32H745XI Discovery and Ethernet physical connection

[DSvit.1]

Hi,

I am trying to use Ethernet with STM32H745XI Discovery board and try to find out, if default board configuration can be used or I need to redirect Q-SPI to pints to Ethernet. Unfortunately the documentation description is not clear - should be this done or should be this done only for Half-duplex operation. Is it possible to use RMII configuration?, in documentation has been written - it is connected with MII, but Microchip PHY support also RMII.

I am not hardware guy and have never worked with Ethernet previously.

So the 2 main question:

• should I do a board rework according to specification, because Ethernet will not work
• Can I use RMII configuration

Thank you in advance.

Documentation reference:

 

Best regards, Dima

[Walid ZRELLI]

Hello @DSvit.1​ 

Q-SPI and ethernet share some pins even when using RMII. Therefore, it wouldn't be possible to use ethernet without following the application note instructions.

BeST Regards,

Walid

[DSvit.1]

Hi Walid,

Get it worked !!!, thank you very much

Best Regards, Dmytro

[Walid ZRELLI]

Hello @DSvit.1​ ,

Nice to here that and glad to help you :smiling_face_with_smiling_eyes:

Please click on Select as Best if my post fully answered your question. This will help other customers with the same issue to find the solution faster!

BeST Regards,

Walid