I can see there is 50 mΩ in LIN bus with LIN ICs. But I don't understand why it is there.
Does anyone have an idea why I see 50 mΩ in the bus line?
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\$\begingroup\$ How about a circuit or relevant data sheet? \$\endgroup\$– StainlessSteelRatCommented Feb 7, 2023 at 13:49
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1 Answer
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This is almost certainly used as a current sensing resistor for LIN's Bus Shunt Method (BSM) of node position detection (NPD), also known as autoaddressing. This method allows a device to detect if it is the last device on the bus, even if it doesn't have an address assigned to it already.
answered Feb 7, 2023 at 5:41
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\$\begingroup\$ Thank, it is definitely for Bus Shunt Method (BSM) even if I cannot check all circuits. I can simply check why there is a shunt from this link as well. en.wikipedia.org/wiki/Local_Interconnect_Network \$\endgroup\$ Commented Feb 7, 2023 at 22:14