CAN FD protocol to become ISO DIS

On June 30th 2015, the CAN FD protocol has been voted to become ISO Draft International Standard.

CAN FD, the improved CAN protocol, is standardized in ISO 11898-1. In the DIS (Draft International Standard) ballot, 15 countries voted with yes and several abstained. Four countries submitted comments mainly of editorial and general nature. The responsible ISO working group will observe those comments. After implementing the observed findings, the English document will also be translated into French and published simultaneously as an international standard in both languages.

There is also a need to standardize CAN transceivers supporting higher bit-rates than 1 Mbit/s. This will be done in the ISO 11898-2 standard. The review and update of this standard is also in preparation. The ISO 11898-2 has successfully passed the Committee Draft ballot. The DIS version is under development and will be submitted soon. The new ISO 11898-2 standard also comprises the former definitions of ISO 11898-5 (low-power function) and ISO 11898-6 (selective wakeup function).

The conformance test plan for CAN FD implementations will be standardized in ISO 16845-1. The test plan for high-speed transceiver chips (ISO 16845-2) needs to be updated. A new work item proposal is already in preparation.

With the acceptance of the CAN FD protocol as a DIS, the chipmakers can start implementing ISO compliant CAN FD. “The days of the non-ISO CAN FD implementations are over,” said Holger Zeltwanger, CiA Managing Director. “The investment is now save.” Cypress is the first micro-controller vendor providing an ISO compliant CAN FD implementation. Of course, several companies have already implemented ISO CAN FD in FPGAs.

Source: CiA