PIC18F258 Datasheet, PDF (86/384 Pages) Microchip Technology – High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN

PIC18FXX8
REGISTER 8-6:
PERIPHERAL INTERRUPT REQUEST (FLAG) REGISTER 3 (PIR3)
R/W-0
IRXIF
bit 7
R/W-0
WAKIF
R/W-0
ERRIF
R/W-0
TXB2IF
R/W-0
TXB1IF
R/W-0 R/W-0
TXB0IF RXB1IF
R/W-0
RXB0IF
bit 0
bit 7
IRXIF: Invalid Message Received Interrupt Flag bit
1 = An invalid message has occurred on the CAN bus
0 = An invalid message has not occurred on the CAN bus
bit 6
WAKIF: Bus Activity Wake-up Interrupt Flag bit
1 = Activity on the CAN bus has occurred
0 = Activity on the CAN bus has not occurred
bit 5
ERRIF: CAN Bus Error Interrupt Flag bit
1 = An error has occurred in the CAN module (multiple sources)
0 = An error has not occurred in the CAN module
bit 4
TXB2IF: Transmit Buffer 2 Interrupt Flag bit
1 = Transmit Buffer 2 has completed transmission of a message, and may be reloaded
0 = Transmit Buffer 2 has not completed transmission of a message
bit 3
TXB1IF: Transmit Buffer 1 Interrupt Flag bit
1 = Transmit Buffer 1 has completed transmission of a message, and may be reloaded
0 = Transmit Buffer 1 has not completed transmission of a message
bit 2
TXB0IF: Transmit Buffer 0 Interrupt Flag bit
1 = Transmit Buffer 0 has completed transmission of a message, and may be reloaded
0 = Transmit Buffer 0 has not completed transmission of a message
bit 1
RXB1IF: Receive Buffer 1 Interrupt Flag bit
1 = Receive Buffer 1 has received a new message
0 = Receive Buffer 1 has not received a new message
bit 0
RXB0IF: Receive Buffer 0 Interrupt Flag bit
1 = Receive Buffer 0 has received a new message
0 = Receive Buffer 0 has not received a new message
Legend:
R = Readable bit
- n = Value at POR
W = Writable bit
’1’ = Bit is set
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared x = Bit is unknown
DS41159B-page 84
Preliminary
 2002 Microchip Technology Inc.