11.2.2.2 Remove a Message from a Transmit Holding Register

A message can be removed from the transmit holding buffer by asserting the TxAbort flag. The content of a particular transmit message buffer can be removed by setting TxAbort to 1 to request message removal. This flag remains set as long as the message abort request is pending. It is cleared when either the message wins arbitration (tx_msg interrupt active) or the message is removed (tx_msg interrupt inactive).