PIC18C658 MICROCHIP [Microchip Technology], PIC18C658 Datasheet - Page 195

• Manufacturer Part Number: PIC18C658
• Description: High-Performance Microcontrollers with CAN Module
• Manufacturer: MICROCHIP [Microchip Technology]

REGISTER 17-13: RXB1CON – RECEIVE BUFFER 1 CONTROL REGISTER
REGISTER 17-14: RXBnSIDH – RECEIVE BUFFER n STANDARD IDENTIFIER HIGH BYTE
2000 Microchip Technology Inc.
bit 7-0
bit 7
bit 6-5
bit 4
bit 3
bit 2-0
REGISTER
bit 7
bit 7
RXFUL: Receive Full Status bit
1 = Receive buffer contains a received message
0 = Receive buffer is open to receive a new message
RXM1:RXM0: Receive Buffer Mode bits
11 = Receive all messages (including those with errors)
10 = Receive only valid messages with extended identifier
01 = Receive only valid messages with standard identifier
00 = Receive all valid messages
Unimplemented: Read as ’0’
RXRTRRO: Receive Remote Transfer Request bit (read only)
1 = Remote transfer request
0 = No remote transfer request
FILHIT2:FILHIT0: Filter Hit bits
These bits indicate which acceptance filter enabled the last message reception into Receive
Buffer 1.
111 = Reserved
110 = Reserved
101 = Acceptance Filter 5 (RXF5)
100 = Acceptance Filter 4 (RXF4)
011 = Acceptance Filter 3 (RXF3)
010 = Acceptance Filter 2 (RXF2)
001 = Acceptance Filter 1 (RXF1) only possible when RXB0DBEN bit is set
000 = Acceptance Filter 0 (RXF0) only possible when RXB0DBEN bit is set
SID10:SID3: Standard Identifier bits, if EXID = 0 (RXBnSIDL Register).
Extended Identifier bits EID28:EID21, if EXID = 1.
Legend:
R = Readable bit
- n = Value at POR
Legend:
R = Readable bit
- n = Value at POR
RXFUL
R/W-x
SID10
R/C-0
Note:
This bit is set by the CAN module and should be cleared by software after the buffer
is read.
R/W-0
RXM1
R/W-x
SID9
Advanced Information
W = Writable bit
’1’ = Bit is set
W = Writable bit
’1’ = Bit is set
R/W-0
RXM0
R/W-x
SID8
U-0
R/W-x
SID7
—
RXRTRRO
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
R-0
R/W-x
SID6
FILHIT2
R/W-x
SID5
R-0
PIC18CXX8
x = Bit is unknown
x = Bit is unknown
FILHIT1
R/W-x
SID4
R-0
DS30475A-page 195
FILHIT0
R/W-x
SID3
R-0
bit 0
bit 0