dcsimg

What's the difference between Standard CAN and Extended CAN, and which one does TINI support?

Created May 4, 2012

Tim Rohaly

Standard CAN and Extended CAN are two different versions of the CAN protocol, differing in the number of bits used for message identifiers in each message frame sent over the CAN bus.

  • Standard CAN, protocol version 2.0A, uses messages with 11 bit identifiers
  • Extended CAN, protocol version 2.0B, uses 29 bit message identifiers but supports 11 bit identifiers as well
The DS80C390 CPU used on the TINI Board has two CAN controllers which support Extended CAN (version 2.0B). Like all implementations of Extended CAN, these controllers will also transmit and receive Standard CAN.