MCP2515
REGISTER 3-4:
TXBnSIDL – TRANSMIT BUFFER n STANDARD IDENTIFIER LOW
(ADDRESS: 32h, 42h, 52h)
R/W-x
SID2
R/W-x
SID1
R/W-x
SID0
R/W-x
—
R/W-x
EXIDE
R/W-x
—
R/W-x
EID17
R/W-x
EID16
bit 7
bit 0
bit 7-5
bit 4
SID: Standard Identifier bits <2:0>
Unimplemented: Reads as ‘0’
bit 3
EXIDE: Extended Identifier Enable bit
1 = Message will transmit extended identifier
0= Message will transmit standard identifier
bit 2
Unimplemented: Reads as ‘0’
bit 1-0
EID: Extended Identifier bits <17:16>
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
‘1’ = Bit is set
REGISTER 3-5:
TXBnEID8 – TRANSMIT BUFFER n EXTENDED IDENTIFIER HIGH
(ADDRESS: 33h, 43h, 53h)
R/W-x
EID15
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 7
bit 0
bit 7-0
EID: Extended Identifier bits <15:8>
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
‘1’ = Bit is set
REGISTER 3-6:
TXBnEID0 – TRANSMIT BUFFER n EXTENDED IDENTIFIER LOW
(ADDRESS: 34h, 44h, 54h)
R/W-x
EID7
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 7
bit 0
bit 7-0
EID: Extended Identifier bits <7:0>
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared x = Bit is unknown
‘1’ = Bit is set
DS21801D-page 20
Preliminary
© 2005 Microchip Technology Inc.
MICROCHIP [ MICROCHIP ]
