at89c51cc03c-slsim ATMEL Corporation, at89c51cc03c-slsim Datasheet - Page 94

• Manufacturer Part Number: at89c51cc03c-slsim
• Description: At89c51cc03 Enhanced 8-bit Mcu With Can Controller And Flash Memory
• Manufacturer: ATMEL Corporation

IT CAN Management
Figure 50. CAN Controller Interrupt Structure
94
AT89C51CC03
CANSTCH.5
CANSTCH.6
CANSTCH.4
CANSTCH.3
CANSTCH.2
CANSTCH.1
CANSTCH.0
OVRBUF
CANGIT.3
CANGIT.1
CANGIT.2
CANGIT.0
OVRTIM
CANGIT.4
CANGIT.5
RXOK i
BERR i
SERR i
CERR i
AERR i
TXOK i
FERR i
SERG
CERG
FERG
AERG
CANGIE.5
ENRX
The different interrupts are:
•
•
•
•
•
To enable a transmission interrupt:
•
•
•
To enable a reception interrupt:
•
•
•
To enable an interrupt on message object error:
CANGIE.4
ENTX
Transmission interrupt,
Reception interrupt,
Interrupt on error (bit error, stuff error, crc error, form error, acknowledge error),
Interrupt when Buffer receive is full,
Interrupt on overrun of CAN Timer.
Enable General CAN IT in the interrupt system register,
Enable interrupt by message object, EICHi,
Enable transmission interrupt, ENTX.
Enable General CAN IT in the interrupt system register,
Enable interrupt by message object, EICHi,
Enable reception interrupt, ENRX.
ENERCH
CANGIE.3
CANSIT1/2
SIT i
SIT i
CANGIE.2
CANIE1/2
ENBUF
CANGIE.1
EICH i
ENERG
i=14
i=0
ECAN
IEN1.0
IEN1.2
ETIM
4182N–CAN–03/08
CANGIT.7
CANIT
OVRIT