Next step in CAN evolution
CAN XL provides a superior solution for data rates up to 20Mbit/s by maintaining the advantages of the CAN protocol like collision-resolution by non-destructive arbitration.
With respect to the bitrate, CAN XL fills the gap between CAN FD and 100BASE-T1 (Ethernet).
CAN XL protocol controllers are also able to perform Classical CAN and CAN FD communication.
CAN XL is specified by CiA 610-1 (CAN in Automation). CAN XL is currently standardized as part of ISO11898-1.
The specification of the CAN XL protocol and physical layer is done by the CiA Special Interest Group CAN XL in the CiA610 document series.
In addition, many other CAN related standards will be updated simultaneously to support CAN XL. Examples are the CAN Conformance Test according to ISO16845 and the physical layer.
Key Protocol Features
- Net data rates up to 20Mbit/s
- Large data fields with up to 2048 byte enable the use of higher layer protocols like IP (Internet Protocol) and even the tunneling of complete Ethernet frames
- Interoperability with CAN FD for mixed FD/XL networks
CAN XL will be operable with all transceivers:
- Classical CAN up to 1Mbit/s
- CAN FD up to 2Mbit/s and CAN FD-SiC up to 5-8Mbit/s
- CAN XL up to 20 Mbit/s
Mandatory License of CAN Protocols
The CAN Protocols are patented products developed by Robert Bosch GmbH.
A CAN Protocol License is required for all implementations of CAN FD, CAN FD Light, TTCAN and CAN XL modules.
> More information about CAN Protocol License
- CAN XL at CAN in Automation (CiA) (external link)
International CAN Conference iCC (iCC) 2020 (external link)
Bosch participated in the conference with the following papers:
- F. Hartwich, “Introducing CAN XL into CAN Networks” (external link)
- A. Mutter, "CAN XL error detection capabilities" (external link)
- C. Senger, “CRC Error Detection for CAN XL” (external link)