18F8680 datasheet(118/496 Pages) MICROCHIP

118 / 496 page

PIC18F6585/8585/6680/8680

DS30491C-page 116

 2004 Microchip Technology Inc.

PIR3: PERIPHERAL INTERRUPT REQUEST (FLAG) REGISTER 3

R/W-0

IRXIF

WAKIF

ERRIF

TXB2IF/

TXBnIF

TXB1IF(1)

TXB0IF(1)

RXB1IF/

RXBnIF

RXB0IF/

FIFOWMIF

bit 7

bit 0

bit 7

IRXIF: CAN Invalid Received Message Interrupt Flag bit

= An invalid message has occurred on the CAN bus

= No invalid message on CAN bus

bit 6

WAKIF: CAN bus Activity Wake-up Interrupt Flag bit

= Activity on CAN bus has occurred

= No activity on CAN bus

bit 5

ERRIF: CAN bus Error Interrupt Flag bit

= An error has occurred in the CAN module (multiple sources)

= No CAN module errors

bit 4

When CAN is in Mode 0:

TXB2IF: CAN Transmit Buffer 2 Interrupt Flag bit

= Transmit Buffer 2 has completed transmission of a message and may be reloaded

= Transmit Buffer 2 has not completed transmission of a message

When CAN is in Mode 1 or 2:

TXBnIF: Any Transmit Buffer Interrupt Flag bit

= One or more transmit buffers has completed transmission of a message and may be

reloaded (TXBIE or BIE0<7:2> must be non-zero)

= No message was transmitted

bit 3

TXB1IF: CAN Transmit Buffer 1 Interrupt Flag bit(1)

= Transmit Buffer 1 has completed transmission of a message and may be reloaded

= Transmit Buffer 1 has not completed transmission of a message

bit 2

TXB0IF: CAN Transmit Buffer 0 Interrupt Flag bit(1)

= Transmit Buffer 0 has completed transmission of a message and may be reloaded

= Transmit Buffer 0 has not completed transmission of a message

bit 1

When CAN is in Mode 0:

RXB1IF: CAN Receive Buffer 1 Interrupt Flag bit

= Receive Buffer 1 has received a new message

= Receive Buffer 1 has not received a new message

When CAN is in Mode 1 or 2:

RXBnIF: CAN Receive Buffer Interrupt Flag bit

= One or more receive buffers has received a new message

= No receive buffer has received a new message

bit 0

When CAN is in Mode 0:

RXB0IF: CAN Receive Buffer 0 Interrupt Flag bit(1)

= Receive Buffer 0 has received a new message

= Receive Buffer 0 has not received a new message

When CAN is in Mode 1:

Unimplemented: Read as ‘0’

When CAN is in Mode 2:

FIFOWMIF: FIFO Watermark Interrupt Flag bit

= FIFO high watermark is reached

= FIFO high watermark is not reached

Legend:

R = Readable bit

W = Writable bit

U = Unimplemented bit, read as ‘0’

- n = Value at POR

‘1’ = Bit is set

‘0’ = Bit is cleared

x = Bit is unknown

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