SAM3A4C Atmel Corporation, SAM3A4C Datasheet - Page 1243

• Manufacturer Part Number: SAM3A4C
• Manufacturer: Atmel Corporation

40.9.5
Name:
Address:
Access:
• MBx: Mailbox x Event
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 register.
• ERRA: Error Active Mode
0: CAN controller is not in Error Active Mode.
1: CAN controller is in Error Active Mode.
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.
This flag is automatically reset when the above condition is not satisfied. Refer to
1218
• WARN: Warning Limit
0: CAN controller Warning Limit is not reached.
1: CAN controller Warning Limit is reached.
This flag is set depending on TEC and REC counter values. It is set when at least one of the counter values exceeds 96.
This flag is automatically reset when above the condition is not satisfied. Refer to
1218
• ERRP: Error Passive Mode
0: CAN controller is not in Error Passive Mode.
1: CAN controller is in Error Passive Mode.
This flag is set depending on TEC and REC counters values.
A node is in error passive state when TEC counter is greater or equal to 128 (decimal) or when the REC counter is greater
or equal to 128 (decimal).
This flag is automatically reset when the above condition is not satisfied. Refer to
1218
11057A–ATARM–17-Feb-12
11057A–ATARM–17-Feb-12
OVLSY
TSTP
MB7
for more information.
for more information.
for more information.
31
23
15
–
7
CAN Status Register
CAN_SR
0x400B4010 (0), 0x400B8010 (1)
Read-only
TBSY
TOVF
MB6
30
22
14
–
6
WAKEUP
RBSY
MB5
29
21
13
–
5
SLEEP
BERR
MB4
28
20
12
–
4
FERR
BOFF
MB3
27
19
11
–
3
Section “Error Interrupt Handler” on page
Section “Error Interrupt Handler” on page
Section “Error Interrupt Handler” on page
AERR
ERRP
MB2
26
18
10
–
2
WARN
SERR
MB1
25
17
9
–
1
SAM3X/A
SAM3X/A
CERR
ERRA
MB0
24
16
8
–
0
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