MEGA128CAN Datasheet, PDF (249/413 Pages) ATMEL Corporation – Microcontroller WITH 128K BYTES OF ISP FLASH AND CAN CONTROLLER

AT90CAN128
• Bit 1 – FERG: Form Error General
Writing a logical one resets this interrupt flag.
– 0 - no interrupt.
– 1 - form error interrupt: one or more violations of the fixed form in the CRC
delimiter, acknowledgment delimiter or EOF.
• Bit 0 – AERG: Acknowledgment Error General
Writing a logical one resets this interrupt flag.
– 0 - no interrupt.
– 1 - acknowledgment error interrupt: no detection of the dominant bit in
acknowledge slot.
CAN General Interrupt Enable
Register - CANGIE
Bit
Read/Write
Initial Value
7
ENIT
R/W
0
6
ENBOFF
R/W
0
5
ENRX
R/W
0
4
ENTX
R/W
0
3
ENERR
R/W
0
2
ENBX
R/W
0
1
ENERG
R/W
0
0
ENOVRT
R/W
0
CANGIE
• Bit 7 – ENIT: Enable all Interrupts (Except for CAN Timer Overrun Interrupt)
– 0 - interrupt disabled.
– 1- CANIT interrupt enabled.
• Bit 6 – ENBOFF: Enable Bus Off Interrupt
– 0 - interrupt disabled.
– 1- bus off interrupt enabled.
• Bit 5 – ENRX: Enable Receive Interrupt
– 0 - interrupt disabled.
– 1- receive interrupt enabled.
• Bit 4 – ENTX: Enable Transmit Interrupt
– 0 - interrupt disabled.
– 1- transmit interrupt enabled.
• Bit 3 – ENERR: Enable MOb Errors Interrupt
– 0 - interrupt disabled.
– 1- MOb errors interrupt enabled.
• Bit 2 – ENBX: Enable Frame Buffer Interrupt
– 0 - interrupt disabled.
– 1- frame buffer interrupt enabled.
• Bit 1 – ENERG: Enable General Errors Interrupt
– 0 - interrupt disabled.
– 1- general errors interrupt enabled.
• Bit 0 – ENOVRT: Enable CAN Timer Overrun Interrupt
– 0 - interrupt disabled.
– 1- CAN timer interrupt overrun enabled.
4250E–CAN–12/04
249