Single-shot transmission (SST) mode is used in systems where the re-transmission of a CAN message due to an arbitration loss or a bus error must be prevented. An SST request is set by asserting TxReq and TxAbort at the same time. Upon a successful message transmission, both flags are cleared.
If an arbitration loss or if a bus error happens during the transmission, the TxReq and TxAbort flags are cleared when the message is removed or when the message wins arbitration. At the same time, the SST_FAILURE interrupt is asserted.