PIC18F6585/8585/6680/8680
DS30491C-page 286
2004 Microchip Technology Inc.
REGISTER 23-6:
TXBnSIDH: TRANSMIT BUFFER n STANDARD IDENTIFIER REGISTERS,
HIGH BYTE [0
≤ n ≤ 2]
REGISTER 23-7:
TXBnSIDL: TRANSMIT BUFFER n STANDARD IDENTIFIER REGISTERS,
LOW BYTE [0
≤ n ≤ 2]
REGISTER 23-8:
TXBnEIDH: TRANSMIT BUFFER n EXTENDED IDENTIFIER REGISTERS,
HIGH BYTE [0
≤ n ≤ 2]
R/W-x
SID10
SID9
SID8
SID7
SID6
SID5
SID4
SID3
bit 7
bit 0
bit 7-0
SID10:SID3: Standard Identifier bits, if EXIDE (TXBnSIDL<3>) = 0;
Extended Identifier bits EID28:EID21, if EXIDE = 1.
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
R/W-x
U-0
R/W-x
U-0
R/W-x
SID2
SID1
SID0
EXIDE
—EID17
EID16
bit 7
bit 0
bit 7-5
SID2:SID0: Standard Identifier bits, if EXIDE (TXBnSIDL<3>) = 0;
Extended Identifier bits EID20:EID18, if EXIDE = 1.
bit 4
Unimplemented: Read as ‘0’
bit 3
EXIDE: Extended Identifier Enable bit
1
= Message will transmit extended ID, SID10:SID0 becomes EID28:EID18
0
= Message will transmit standard ID, EID17:EID0 are ignored
bit 2
Unimplemented: Read as ‘0’
bit 1-0
EID17:EID16: Extended Identifier bits
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
R/W-x
EID15
EID14
EID13
EID12
EID11
EID10
EID9
EID8
bit 7
bit 0
bit 7-0
EID15:EID8: Extended Identifier bits (not used when transmitting standard identifier message)
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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