65677a508eae27001ebef644 Cia Focuses New Group On Transceivers For Microcon

CiA focuses new group on transceivers for microcontrollers

Nov. 29, 2023
The association is supporting electronic control unit manufacturers’ use of 3.3-V controller area network transceivers

The nonprofit CiA (CAN in Automation) association has established the special interest group (SIG) 3.3-V transceivers. Vikas Thawani of Texas Instruments is chair of the SIG. Electronic control unit (ECU) manufacturers are selecting increasingly 3.3-V controller area network (CAN) microcontrollers. In order to avoid two supply voltages, CiA says that manufacturers like to use 3.3-V CAN transceivers, instead of the more currently used 5-V transceivers.

The scope of the SIG covers the following CAN transceivers, compliant with International Organization for Standardization (ISO) 11898-2:2024:

·       CAN HS (high speed)

·       CAN FD (flexible data rate)

·       CAN SIC (signal improvement capability)

·       CAN SIC XL (extended data field length).

The group will also consider transceivers with low-power and selective wake-up capabilities. A related conformance test plan, an interoperability test plan and an EMC specification are also in the SIG’s scope. The first specification is covering physical medium attachment (PMA) sub-layer implementations, according to the parameter set A and B as given in the ISO/FDIS 11898-2:2023. It is intended to release a CiA draft specification proposal (DSP) for 3.3-V CAN transceivers by end of 2024.

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