PIC18F258 Datasheet, PDF (212/384 Pages) Microchip Technology – High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN

PIC18FXX8
REGISTER 19-15: RXBnSIDL – RECEIVE BUFFER n STANDARD IDENTIFIER, LOW BYTE
R/W-x R/W-x R/W-x R/W-x R/W-x
U-0
R/W-x R/W-x
SID2
SID1
SID0
SRR
EXID
—
EID17 EID16
bit 7
bit 0
bit 7-5
bit 4
bit 3
bit 2
bit 1-0
SID2:SID0: Standard Identifier bits, if EXID = 0
Extended Identifier bits EID20:EID18, if EXID = 1
SRR: Substitute Remote Request bit
This bit is always ‘0’ when EXID = ‘1’, or equal to the value of RXRTRRO (RXnBCON<3>)
when EXID = ‘0’.
EXID: Extended Identifier bit
1 = Received message is an Extended Data Frame, SID10:SID0 are EID28:EID18
0 = Received message is a Standard Data Frame
Unimplemented: Read as ’0’
EID17:EID16: Extended Identifier bits
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
REGISTER 19-16: RXBnEIDH – RECEIVE BUFFER n EXTENDED IDENTIFIER, HIGH BYTE
R/W-x
EID15
bit 7
R/W-x
EID14
R/W-x
EID13
R/W-x
EID12
R/W-x
EID11
R/W-x
EID10
R/W-x
EID9
R/W-x
EID8
bit 0
bit 7-0
EID15:EID8: Extended Identifier bits
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
REGISTER 19-17: RXBnEIDL – RECEIVE BUFFER n EXTENDED IDENTIFIER, LOW BYTE
R/W-x
EID7
bit 7
R/W-x
EID6
R/W-x
EID5
R/W-x
EID4
R/W-x
EID3
R/W-x
EID2
R/W-x
EID1
R/W-x
EID0
bit 0
bit 7-0
EID7:EID0: Extended Identifier bits
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 210
Preliminary
 2002 Microchip Technology Inc.