at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 693

• Manufacturer Part Number: at91sam9263
• Description: At91 Arm Thumb Microcontrollers
• Manufacturer: ATMEL Corporation

37.8.5
Name:
Access Type:
• 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 node is neither in error passive mode nor in bus
off mode.
This flag is automatically reset when above condition is not satisfied.
• 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 counters values. It is set when at least one of the counters values exceeds 96.
This flag is automatically reset when above condition is not satisfied.
• 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 error passive when TEC counter is greater or equal to 128 (decimal) or when the REC counter is greater or equal
to 128 (decimal) and less than 256.
This flag is automatically reset when above condition is not satisfied.
• BOFF: Bus Off mode
0 = CAN controller is not in bus-off mode
6249D–ATARM–20-Dec-07
OVLSY
MB15
TSTP
MB7
31
23
15
7
CAN Status Register
TBSY
MB14
TOVF
MB6
30
22
14
CAN_SR
Read-only
6
WAKEUP
RBSY
MB13
MB5
29
21
13
5
SLEEP
BERR
MB12
MB4
28
20
12
4
FERR
BOFF
MB11
MB3
27
19
11
3
AT91SAM9263 Preliminary
AERR
ERRP
MB10
MB2
26
18
10
2
WARN
SERR
MB9
MB1
25
17
9
1
CERR
ERRA
MB8
MB0
24
16
8
0
693