Hi,
I would like to enable the SWO signal on the SWD connector, but one of the SDMMC data pins is already using that line.
To avoid creating a long stub on the SDMMC bus leading to the SWD connector—which could cause line reflection issues due to the potentially high speeds of the SDMMC—I’m considering isolating the connection to the SWD connector with a resistor. This would allow the SDMMC line to be directly connected to the microcontroller while the signal to the SWD connector is "isolated" through the resistor.
A resistor with too high a value might degrade the SWO signal (?). Could you recommend an appropriate resistor value that ensures reliable SWO operation?
Additionally, what are the best practices in this situation? For example, would implementing line termination at the SWD connector side be advisable?
Thank you!
