Datasheet

MCP2515
DS21801E-page 36 © 2007 Microchip Technology Inc.
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REGISTER 4-15: RXMnSIDL – MASK n STANDARD IDENTIFIER LOW
(ADDRESS: 21h, 25h)
R/W-0 R/W-0 R/W-0 U-0 U-0 U-0 R/W-0 R/W-0
SID2 SID1 SID0
— — —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: Standard Identifier Mask bits <2:0>
These bits hold the mask bits to be applied to bits<2:0> of the Standard Identifier portion of a received
message
bit 4-2 Unimplemented: Reads as ‘0’
bit 1-0 EID: Extended Identifier Mask bits <17:16>
These bits hold the mask bits to be applied to bits <17:16> of the Extended Identifier portion of a
received message
REGISTER 4-16: RXMnEID8 – MASK n EXTENDED IDENTIFIER HIGH
(ADDRESS: 22h, 26h)
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
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: Extended Identifier bits <15:8>
These bits hold the filter bits to be applied to bits <15:8> of the Extended Identifier portion of a received
message
REGISTER 4-17: RXMnEID0 – MASK n EXTENDED IDENTIFIER LOW
(ADDRESS: 23h, 27h)
R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0 R/W-0
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: Extended Identifier Mask bits <7:0>
These bits hold the mask bits to be applied to the bits <7:0> of the Extended Identifier portion of a
received message