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CAN FD recommendation
Part 1 is released as a Draft Standard Proposal (DSP). It specifies the Tx delay symmetry and the Rx delay symmetry requirements as well as the recessive bit-time at the receiving node's RxD pin for different bit-rates (1 Mbit/s, 2 Mbit/s, and 5 Mbit/s). Rules of thumb on how to calculate the transmitting node delay with and without galvanic isolation are also included. Part 1 will be updated frequently depending on the experiences coming from prototype developments of OEMs and CAN FD plug-fests organized by CiA. The document is also available for non-members on request for review purposes. In particular, carmakers and Tier 1 suppliers are invited to submit comments and further recommendations to be evaluated and discussed in the CiA Interest Group (IG) "CAN FD".
Part 2 (host controller interface recommendation) and Part 3 (system design specification) are still under development. Part 4 is also in preparation. It introduces and specifies a ringing suppression technology intended for star and hybrid topologies. These parts will be released as a DSP when the "CAN FD" group has observed and implemented all pending comments.
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