Datasheet

ManualsBrandsMICROCHIP TECHNOLOGY ManualsMicrocontrollers, Microprocessors & QuartzesEmbedded microcontroller PDIP 40 8-Bit 40 MHz I/O number 36

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PIC18F2585/2680/4585/4680

Mode 0

R/C-0 R/W-0 R/W-0 U-0 R-0 R/W-0 R-0 R-0

RXFUL

(1)

RXM1 RXM0 — RXRTRRO FILHIT2 FILHIT1 FILHIT0

Mode 1, 2

R/C-0 R/W-0 R-0 R-0 R-0 R-0 R-0 R-0

RXFUL

(1)

RXM1 RTRRO FILHIT4 FILHIT3 FILHIT2 FILHIT1 FILHIT0

bit 7 bit 0

bit 7 RXFUL: Receive Full Status bit

(1)

1 = Receive buffer contains a received message

0 = Receive buffer is open to receive a new message

Note 1: This bit is set by the CAN module upon receiving a message and must be cleared

by software after the buffer is read. As long as RXFUL is set, no new message will

be loaded and buffer will be considered full.

bit 6

Mode 0:

RXM1: Receive Buffer Mode bit 1

Combines with RXM0 to form RXM<1:0> bits (see bit 5).

11 = Receive all messages (including those with errors); filter criteria is ignored

10 = Receive only valid messages with extended identifier; EXIDEN in RXFnSIDL must be ‘1’

01 = Receive only valid messages with standard identifier, EXIDEN in RXFnSIDL must be ‘0’

00 = Receive all valid messages as per EXIDEN bit in RXFnSIDL register

Mode 1, 2:

RXM1: Receive Buffer Mode bit

1 = Receive all messages (including those with errors); acceptance filters are ignored

0 = Receive all valid messages as per acceptance filters

bit 5 Mode 0:

RXM0: Receive Buffer Mode bit 0

Combines with RXM1 to form RXM<1:0> bits (see bit 6).

Mode 1, 2:

RTRRO: Remote Transmission Request bit for Received Message (read-only)

1 = A remote transmission request is received

0 = A remote transmission request is not received

bit 4 Mode 0:

Unimplemented: Read as ‘0’

Mode 1, 2:

FILHIT4: Filter Hit bit 4

This bit combines with other bits to form filter acceptance bits <4:0>.

bit 3 Mode 0:

RXRTRRO: Remote Transmission Request bit for Received Message (read-only)

1 = A remote transmission request is received

0 = A remote transmission request is not received

Mode 1, 2:

FILHIT3: Filter Hit bit 3

This bit combines with other bits to form filter acceptance bits <4:0>.