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[SOLVED] What is reason for using 11bit identifier and 4bit DLC?

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N.Karthick

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hi friends,

i have only theoretical knowledge in CAN.

interviewer asked a question to me,

1.why particularly 11 bit identifier used in CAN?
2.why 4-bit used instead of3,5 or 6?
3.why stuff bit is added after 5 consecutive number not 3 bit or 8 bit?

i can't get answer above question clearly?
 

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