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rachot , 04-02-2022, 06:33 AM

I found this circuit from Antmicro opensource hardware used in Jetson nano base board project.
Why they put R 0 Ohm in this circuit?
Thank you

qdrives , 04-02-2022, 04:17 PM

Zero ohm resistors are often used to allow optional parts or change the signal paths. It allows you to 'disconnect' a part of the circuit.
A little overkill here in my opinion.

Ant1882 , 04-04-2022, 07:00 AM

I'm guessing in this case it gives you a chance to add a small series resistance if you have issues with radiated EMI maybe?

qdrives , 04-04-2022, 02:40 PM

@Ant1882 You would need to see the bigger picture (schematic and layout) if this could be for EMI.
For the reset I would rather pick a 1k resistor or so, as this allows you to physically reset (during development) with damaging anything.