CAN XL
Next step in CAN evolution
![Bosch_CAN, CAN_XL, CAN, CAN XL](/media/events/can_xl/bosch_canxl_logo_res_800x450.png, /media/events/can_xl/bosch_canxl_logo_res_1600x900.png 2x)
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.
Status
CAN XL is standardized in the ISO 11898-1:2024 (CAN CC, CAN FD, CAN XL and CAN FD light).
In addition, many other CAN related standards will be updated simultaneously to support CAN XL. Examples are the CAN Conformance Test according to ISO 16845 and the physical layer which is released as ISO 11898-2:2024.
![Bosch CAN XL](/media/ip_modules/canxl_diagram_16_9_v2_res_800x450.jpg, /media/ip_modules/canxl_diagram_16_9_v2_res_1600x900.jpg 2x)
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
![Mixed FD / XL networks](/media/events/can_xl/bosch_can_xl_mixed_fd_xl_networks_res_800x450.jpg, /media/events/can_xl/bosch_can_xl_mixed_fd_xl_networks_res_1600x900.jpg 2x)
Physical Layer
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
![Physical layer](/media/ip_modules/white_blank_res_800x450.jpg, /media/ip_modules/white_blank_res_1600x900.jpg 2x)
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.
![Mandatory License](/media/ip_modules/white_blank_res_800x450.jpg, /media/ip_modules/white_blank_res_1600x900.jpg 2x)
Publications
- 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)
![Publications](/media/ip_modules/white_blank_res_800x450.jpg, /media/ip_modules/white_blank_res_1600x900.jpg 2x)