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Do we need to control impedance of CAN BUS ?

Question asked by Peter Amond on Aug 6, 2018
Latest reply on Aug 7, 2018 by Yuri Muhin

Gary Bisson

Hi All,


My hardware design is most similar to nitrogen6_max development board and I have included CAN BUS port to my custom design which is similar to Sabre Lite board (CAN BUS). 


In my memory layout I controlled impedance as 100 Ohms for differential pair and 50 Ohms for single ended signals.


I can see in Sabre lite schematic design CAN BUS is not differential pair. Is that correct ? Don't we need to control impedance of the CAN BUS traces ? If yes what is the impedance value ?