These bits are not cleared once the communication is performed. The user must re-write the
configuration to enable a new communication.
• This operation is necessary to be able to reset the BXOK flag.
• This operation also set the corresponding bit in the CANEN registers.
• Bit 5 – RPLV: Reply Valid
Used in the automatic reply mode after receiving a remote frame.
– 0 - reply not ready.
– 1 - reply ready and valid.
• Bit 4 – IDE: Identifier Extension
IDE bit of the remote or data frame to send.
This bit is updated with the corresponding value of the remote or data frame received.
– 0 - CAN standard rev 2.0 A (identifiers length = 11 bits).
– 1 - CAN standard rev 2.0 B (identifiers length = 29 bits).
• Bit 3:0 – DLC3:0: Data Length Code
Number of Bytes in the data field of the message.
DLC field of the remote or data frame to send. The range of DLC is from 0 up to 8. If DLC field >8
then effective DLC=8.
This field is updated with the corresponding value of the remote or data frame received. If the
expected DLC differs from the incoming DLC, a DLC warning appears in the CANSTMOB
register.
16.11.3 CAN Identifier Tag Registers -
CANIDT1, CANIDT2, CANIDT3, and CANIDT4
V2.0 part A
Bit
15/7
14/6
13/5
12/4
11/3
10/2
9/1
8/0
-
-
-
-
-
-
-
-
-
-
-
-
RTRTAG
-
-
-
RB0TAG
CANIDT4
CANIDT3
CANIDT2
CANIDT1
-
-
-
-
IDT
2
IDT
IDT
1
9
IDT
IDT
0
8
IDT10
31/23
R/W
-
IDT
7
IDT
6
IDT
5
IDT
25/17
R/W
-
4
IDT3
Bit
30/22
R/W
-
29/21
R/W
-
28/20
R/W
-
27/19
R/W
-
26/18
R/W
-
24/16
R/W
-
Read/Write
Initial Value
V2.0 part B
Bit
15/7
14/6
13/5
12/4
11/3
10/2
9/1
8/0
IDT
4
IDT
3
IDT
2
IDT
IDT
1
9
IDT
IDT
0
8
RTRTAG
RB1TAG
RB0TAG
CANIDT4
CANIDT3
CANIDT2
CANIDT1
IDT12
IDT20
IDT28
31/23
R/W
IDT11
IDT19
IDT27
30/22
R/W
IDT10
IDT18
IDT26
29/21
R/W
IDT
7
IDT
6
IDT5
IDT17
IDT25
28/20
R/W
IDT16
IDT24
27/19
R/W
IDT15
IDT23
26/18
R/W
IDT14
IDT22
25/17
R/W
IDT13
IDT21
24/16
R/W
Bit
Read/Write
Initial Value
-
-
-
-
-
-
-
-
198
ATmega16/32/64/M1/C1
7647F–AVR–04/09
ATMEL [ ATMEL ]
