38.8.4 Mismatch of DLC and Payload Size During Reception

The PLSIZEx bits reserve a certain number of bytes in the receive message object. The module handles mismatches between DLC and payload size as follows:

• If the number of bytes specified by the DLC is smaller than the number of bytes specified by the PLSIZEx bits, the received message bytes will be stored in the message object, without any padding.
• If the number of bytes specified by the DLC is bigger than the number of bytes specified by the PLSIZEx bits, the data bytes that fit in the receive message object are stored and the other data bytes that do not fit are discarded. The module ensures that the next message object in RAM does not get overwritten. The module will store the message in the receive object and the RX FIFO status flags will be updated. In addition, the IVMIF (CxINT[15]) and DLCMM flags (CxBDIAG1[31]) will be set.