Atmel Xplained Pro Evaluation Kit ATSAM4E-XPRO ATSAM4E-XPRO Data Sheet

689

SAM4E [DATASHEET]

Atmel-11157D-ATARM-SAM4E16-SAM4E8-Datasheet_12-Jun-14

CAN_SR

0x40010010 (0), 0x40014010 (1)

Read-only



0: No event occurred on Mailbox x. 

1: An event occurred on Mailbox x.

An event corresponds to MRDY, MABT fields in the CAN_MSRx.



0: CAN controller has not reached Error Active Mode since the last read of CAN_SR.

1: CAN controller has reached Error Active Mode since the last read of CAN_SR.

This flag is automatically cleared by reading CAN_SR.

This flag is set depending on TEC and REC counter values. It is set when a node is neither in Error Passive Mode nor in 
Bus Off Mode.



0: CAN controller Warning Limit has not been reached since the last read of CAN_SR.

1: CAN controller Warning Limit has been reached since the last read of CAN_SR.

This flag is automatically cleared by reading CAN_SR.

This flag is set depending on TEC and REC counter values. It is set when at least one of the counter values has reached a 
value greater than or equal to 96.



0: CAN controller has not reached Error Passive Mode since the last read of CAN_SR.

1: CAN controller has reached Error Passive Mode since the last read of CAN_SR.

This flag is set depending on TEC and REC counters values.

This flag is automatically cleared by reading CAN_SR.

A node is in error passive state when TEC counter is greater than or equal to 128 (decimal) or when the REC counter is 
greater than or equal to 128 (decimal).



0: CAN controller has not reached Bus Off Mode.

1: CAN controller has reached Bus Off Mode since the last read of CAN_SR.

This flag is automatically cleared by reading CAN_SR.

31

30

29

28

27

26

25

24

OVLSY

TBSY

RBSY

BERR

FERR

AERR

SERR

CERR

23

22

21

20

19

18

17

16

TSTP

TOVF

WAKEUP

SLEEP

BOFF

ERRP

WARN

ERRA

15

14

13

12

11

10

9

8

–

–

–

–

–

–

–

–

7

6

5

4

3

2

1

0

MB7

MB6

MB5

MB4

MB3

MB2

MB1

MB0