2. CAN bus specifications
2.1 ISO layers and CAN bus
The standard ISO 11519 of the CAN bus specifies :
in part A, an 11-bit identification field ("standard" format);
in part B, a 29-bit identification field ("extended" format).
Note: in this article, only the standard format will be presented; the difference with the extended format will only concern the size of the identifier.
This standard defines the physical layer, or layer 1 in the ISO sense of the term, which is responsible for defining the signal on the media, the electrical interface and bit coding, and layer 2,...
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CAN bus specifications
CAN-FD specifications
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