Datasheet

Table Of Contents
© 2009 Microchip Technology Inc. DS39637D-page 297
PIC18F2480/2580/4480/4580
REGISTER 24-16: RXBnSIDL: RECEIVE BUFFER n STANDARD IDENTIFIER REGISTERS,
LOW BYTE [0 n 1]
R-x R-x R-x R-x R-x U-0 R-x R-x
SID2 SID1 SID0 SRR EXID
—EID17EID16
bit 7 bit 0
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
bit 7-5 SID<2:0>: Standard Identifier bits (if EXID = 0)
Extended Identifier bits, EID<20:18> (if EXID = 1).
bit 4 SRR: Substitute Remote Request bit
This bit is always ‘1’ when EXID = 1 or equal to the value of RXRTRRO (RBXnCON<3>) when EXID = 0.
bit 3 EXID: Extended Identifier bit
1 = Received message is an extended data frame, SID<10:0> are EID<28:18 >
0 = Received message is a standard data frame
bit 2 Unimplemented: Read as ‘0
bit 1-0 EID<17:16>: Extended Identifier bits
REGISTER 24-17: RXBnEIDH: RECEIVE BUFFER n EXTENDED IDENTIFIER REGISTERS,
HIGH BYTE [0 n 1]
R-x R-x R-x R-x R-x R-x R-x R-x
EID15 EID14 EID13 EID12 EID11 EID10 EID9 EID8
bit 7 bit 0
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
bit 7-0 EID<15:8>: Extended Identifier bits
REGISTER 24-18: RXBnEIDL: RECEIVE BUFFER n EXTENDED IDENTIFIER REGISTERS,
LOW BYTE [0 n 1]
R-x R-x R-x R-x R-x R-x R-x R-x
EID7 EID6 EID5 EID4 EID3 EID2 EID1 EID0
bit 7 bit 0
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
bit 7-0 EID<7:0>: Extended Identifier bits