at91sam9263 ATMEL Corporation, at91sam9263 Datasheet - Page 702

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

37.8.12
Name:
Access Type:
• MTIMEMARK: Mailbox Timemark
This field is active in Time Triggered Mode. Transmit operations are allowed when the internal timer counter reaches the
Mailbox Timemark. See
In Timestamp Mode, MTIMEMARK is set to 0.
• PRIOR: Mailbox Priority
This field has no effect in receive and receive with overwrite modes. In these modes, the mailbox with the lowest number is
serviced first.
When several mailboxes try to transmit a message at the same time, the mailbox with the highest priority is serviced first. If
several mailboxes have the same priority, the mailbox with the lowest number is serviced first (i.e., MBx0 is serviced before
MBx 15 if they have the same priority).
• MOT: Mailbox Object Type
This field allows the user to define the type of the mailbox. All mailboxes are independently configurable. Five different
types are possible for each mailbox:
702
MTIMEMARK
MTIMEMARK7
31
23
15
15
–
–
7
0
0
0
0
1
1
1
AT91SAM9263 Preliminary
CAN Message Mode Register
MTIMEMARK
MTIMEMARK6
30
22
14
14
CAN_MMRx
Read/Write
–
–
6
MOT
“Transmitting within a Time Window” on page
0
0
1
1
0
0
1
MTIMEMARK
MTIMEMARK5
29
21
13
13
–
–
5
X
0
1
0
1
0
1
MTIMEMARK
MTIMEMARK4
28
20
12
12
–
–
4
Mailbox is disabled. This prevents receiving or transmitting any messages
with this mailbox.
Reception Mailbox. Mailbox is configured for reception. If a message is
received while the mailbox data register is full, it is discarded.
Reception mailbox with overwrite. Mailbox is configured for reception. If a
message is received while the mailbox is full, it overwrites the previous
message.
Transmit mailbox. Mailbox is configured for transmission.
Consumer Mailbox. Mailbox is configured in reception but behaves as a
Transmit Mailbox, i.e., it sends a remote frame and waits for an answer.
Producer Mailbox. Mailbox is configured in transmission but also behaves
like a reception mailbox, i.e., it waits to receive a Remote Frame before
sending its contents.
Reserved
MTIMEMARK
MTIMEMARK3
27
19
11
11
–
3
682.
Mailbox Object Type
MTIMEMARK
MTIMEMARK2
26
18
10
10
2
PRIOR
MTIMEMARK9
MTIMEMARK1
MOT
25
17
9
1
6249D–ATARM–20-Dec-07
MTIMEMARK8
MTIMEMARK0
24
16
8
0