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Bit 3: Transmitted a message successfully
1 = Since this bit was last reset by CPU, a message has been successfully (error-free
and acknowledged by at least one other node) transmitted.
0 = Since this bit was last reset by CPU, no message has been transmitted.
Bit 4: Received a message successfully
1 = A message has been successfully received since this bit was last reset by CPU
(independent of the result of acceptance filtering).
0 = No message has been successfully received since this bit was last reset by CPU
Bit 5: Error Passive (Read only)
1 = The CAN core is in the error passive state as defined in the CAN specification.
0 = The CAN core is in the error active.
Bit 6: Error Warning Status (Read only)
1 = At least one of the error counters in the EML (Error Management Logic) has
reached the error warning limit of 96.
= Both error counters are below the error warning limit of 96.
Bit 7: Bus-off Status (Read only)
1 = The CAN Module is in bus-off state.
0 = The CAN Module is not in bus-off state.
<BELL> = ERROR
Bit 0 ~ Bit 7 returned to correspond to the 8-bits of the internal register of the CAN
controller.
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