AT90CAN128-16AE ATMEL Corporation, AT90CAN128-16AE Datasheet - Page 256

• Manufacturer Part Number: AT90CAN128-16AE
• Description: 8-bit Avr Microcontroller With 128K Bytes of Isp Flash And CAN Controller.flash (Kbytes) 128 Vcc (V) 2.7-5.5 EEPROM (Kbytes) 4 SRAM (bytes) 4K CAN (mess. Obj.) 15
• Manufacturer: ATMEL Corporation

CAN MOb Control and DLC
Register - CANCDMOB
256
AT90CAN128
• Bit 7:6 – CONMOB1:0: Configuration of Message Object
These bits set the communication to be performed (no initial value after RESET).
These bits are not cleared once the communication is performed. The user must re-
write the configuration to enable a new communication.
• Bit 5 – RPLV: Reply Valid
Used in the automatic reply mode after receiving a remote frame.
• 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.
• 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 CAN-
STMOB register.
Bit
Read/Write
Initial Value
–
–
–
–
• 00 - disable.
• 01 - enable transmission.
• 10 - enable reception.
• 11 - enable frame buffer reception
• This operation is necessary to be able to reset the BXOK flag.
• This operation also set the corresponding bit in the CANEN registers.
0 - reply not ready.
1 - reply ready and valid.
0 - CAN standard rev 2.0 A (identifiers length = 11 bits).
1 - CAN standard rev 2.0 B (identifiers length = 29 bits).
CONMOB1 CONMOB0
R/W
7
-
R/W
6
-
RPLV
R/W
5
-
R/W
IDE
4
-
DLC3
R/W
3
-
DLC2
R/W
2
-
DLC1
R/W
1
-
DLC0
R/W
0
-
4250C–CAN–03/04
CANCDMOB