1 can mode register – Rainbow Electronics AT91CAP9S250A User Manual
Page 710
710
6264A–CAP–21-May-07
AT91CAP9S500A/AT91CAP9S250A
39.8.1
CAN Mode Register
Name:
CAN_MR
Access Type:
Read/Write
• CANEN: CAN Controller Enable
0 = The CAN Controller is disabled.
1 = The CAN Controller is enabled.
• LPM: Disable/Enable Low Power Mode
0 = Disable w Power Mode.
1 = Enable Low Power Mo
CAN controller enters Low Power Mode once all pending messages have been transmitted.
• ABM: Disable/Enable Autobaud/Listen mode
0 = Disable Autobaud/listen mode.
1 = Enable Autobaud/listen mode.
• OVL: Disable/Enable Overload Frame
0 = No overload frame is generated.
1 = An overload frame is generated after each successful reception for mailboxes configured in Receive with/without over-
write Mode, Producer and Consumer.
• TEOF: Timestamp messages at each end of Frame
0 = The value of CAN_TIM is captured in the CAN_TIMESTP register at each Start Of Frame.
1 = The value of CAN_TIM is captured in the CAN_TIMESTP register at each End Of Frame.
• TTM: Disable/Enable Time Triggered Mode
0 = Time Triggered Mode is disabled.
1 = Time Triggered Mode is enabled.
• TIMFRZ: Enable Timer Freeze
0 = The internal timer continues to be incremented after it reached 0xFFFF.
1 = The internal timer stops incrementing after reaching 0xFFFF. It is restarted after a timer reset. See
nal Timer Counter” on page 707
• DRPT: Disable Repeat
0 = When a transmit mailbox loses the bus arbitration, the transfer request remains pending.
1 = When a transmit mailbox lose the bus arbitration, the transfer request is automatically aborted. It automatically raises
the MABT and MRDT flags in the corresponding CAN_MSRx.
31
30
29
28
27
26
25
24
–
–
–
–
–
23
22
21
20
19
18
17
16
–
–
–
–
–
–
–
–
15
14
13
12
11
10
9
8
–
–
–
–
–
–
–
–
7
6
5
4
3
2
1
0
DRPT
TIMFRZ
TTM
TEOF
OVL
ABM
LPM
CANEN