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Buffer/FIFO element data field size of CAN FD Controller in Traveo II Family – KBA232837
Is it possible to use a combination of two different sizes of data fields for buffers/FIFO elements of the CAN FD Controller?
No, it is not possible to configure Tx buffer element's data field to different sizes. The CANFDx_CHy_TXESC register allows you to configure the data field size of the Tx buffer element to up to 64 bytes. This configuration applies to all Tx buffers for the respective channel. The same restriction is applicable for Rx buffers/FIFO elements also; different Rx buffer elements belonging to the same CAN channel cannot have different sizes of the data field. The data field size of the Rx Buffer/FIFO elements can be configured through the CANFDx_CHy_RXESC register ('x' is the CAN FD instance number and 'y' is the channel number in the respective CAN FD group).
For more details, see the “CAN FD Controller” section of the Technical Reference Manual.
Note: This KBA applies to the following series of Traveo II MCUs: