Fujitsu MB90420/5 (A) Series Hardware Manual page 498

• Processing for completion of transmission
If transmission is successful, TCx of the transmission complete register (TCR) becomes 1.
If the transmission complete interrupt is enabled (TIEx of the transmission complete interrupt enable
register (TIER) is 1), an interrupt occurs.
After checking the transmission completion, write 0 to TCx to set it to 0. This cancels the transmission
complete interrupt.
In the following cases, the transmission request in the wait state is canceled by receiving and storing a
message.
– Request for data frame transmission by reception of data frame
– Request for remote frame transmission by reception of data frame
– Request for remote frame transmission by reception of remote frame
Request for data frame transmission is not canceled by receiving and storing a remote frame. ID and DLC,
however, are changed by the ID and DLC of the received remote frame. Note that the ID and DLC of data
frame to be transmitted become the value of received remote frame.
CAN CONTROLLER
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