Datasheet
SAM4E [DATASHEET]
Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14
690
This flag is set depending on TEC counter value. A node is in bus off state when TEC counter is greater than or equal to
256 (decimal).
SLEEP: CAN controller in Low power Mode
0: CAN controller is not in low power mode.
1: CAN controller is in low power mode.
This flag is automatically reset when Low power mode is disabled
WAKEUP: CAN controller is not in Low power Mode
0: CAN controller is in low power mode.
1: CAN controller is not in low power mode.
When a WAKEUP event occurs, the CAN controller is synchronized with the bus activity. Messages can be transmitted or
received. The CAN controller clock must be available when a WAKEUP event occurs. This flag is automatically reset when
the CAN Controller enters Low Power mode.
TOVF: Timer Overflow
0: The timer has not rolled-over FFFFh to 0000h.
1: The timer rolls-over FFFFh to 0000h.
This flag is automatically cleared by reading CAN_SR.
TSTP: Timestamp
0: No bus activity has been detected.
1: A start of frame or an end of frame has been detected (according to the TEOF field in the CAN_MR).
This flag is automatically cleared by reading the CAN_SR.
CERR: Mailbox CRC Error
0: No CRC error occurred during a previous transfer.
1: A CRC error occurred during a previous transfer.
A CRC error has been detected during last reception.
This flag is automatically cleared by reading CAN_SR.
SERR: Mailbox Stuffing Error
0: No stuffing error occurred during a previous transfer.
1: A stuffing error occurred during a previous transfer.
A form error results from the detection of more than five consecutive bit with the same polarity.
This flag is automatically cleared by reading CAN_SR.
AERR: Acknowledgment Error
0: No acknowledgment error occurred during a previous transfer.
1: An acknowledgment error occurred during a previous transfer.
An acknowledgment error is detected when no detection of the dominant bit in the acknowledge slot occurs.
This flag is automatically cleared by reading CAN_SR.