Time triggered transmission mode
At the moment, frame is only transmitted when external timestamp is higher than timestamp in TXT Buffer. If frame shall be transmitted immediately, then user shall write 0x0 to both timestamp words. If timestamp is not used, then it shall be tied high in design which integrates CTU CAN FD.
It would be better if Time triggered transmission would be enabled/disabled by a dedicated mode, and it would be disabled by default. This will avoid confusion and errors in following case:
timestamp input is not tied high, but low instead (by mistake). If user inserts non-zero value to timestamp words in TXT buffer -> Frame will never be transmitted. If time triggered transmission is disabled by default, user will not see this issue. Also, since user knows that Timestamp is not available, he will most likely not try to enable this mode.