STM32H753VIH6 RMII Signal Validation

Manikandan · ‎2025-04-17

Hi Team,

We are using the STM32H753VIH6 in our design.

We are connecting the Realtek RTL8364 through RMII interface.

I have powered the STM with 3V3.

Attached the waveforms for undershoot and overshoot accepted levels.

This has been probed with 2GHz Oscilloscope of 8GSa/s.

Kindly provide your comments.

Thanks

Manikandan R

Manikandan · ‎2025-04-21

Hi ST team,

Gentle Reminder!

Kindly provide your insights on this matter.

Thanks

Manikandan R

KARTHIC_V · ‎2025-04-21

Hi ST community,

We have interfaced STM32H753VIH6 with RTL8364 through RMII interface and validated it.

We have captured and attached the signals of CLK, TXD and RXD using oscilloscope with probe capacitance less than 1pF.

In the captured waveforms, we have observed undershoot on those signals. Whether the undershoot levels are below threshold? Kindly provide your inputs.

Thanks,
Karthic V

mƎALLEm · ‎2025-04-21

Hello all,

Please don't duplicate questions even you belong to the same team in your company.

For your question I propose to open an online support ticket over this link.

Thank you.

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