Datasheet

MCP2515
DS21801E-page 34 © 2007 Microchip Technology Inc.
REGISTER 4-10: RXFnSIDH – FILTER n STANDARD IDENTIFIER HIGH
(ADDRESS: 00h, 04h, 08h, 10h, 14h, 18h)
R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x R/W-x
SID10 SID9 SID8 SID7 SID6 SID5 SID4 SID3
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 SID: Standard Identifier Filter bits <10:3>
These bits hold the filter bits to be applied to bits <10:3> of the Standard Identifier portion of a received
message
REGISTER 4-11: RXFnSIDL – FILTER n STANDARD IDENTIFIER LOW
(ADDRESS: 01h, 05h, 09h, 11h, 15h, 19h)
R/W-x R/W-x R/W-x U-0 R/W-x U-0 R/W-x R/W-x
SID2 SID1 SID0
—EXIDE —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 Filter bits <2:0>
These bits hold the filter bits to be applied to bits <2:0> of the Standard Identifier portion of a received
message
bit 4 Unimplemented: Reads as ‘0’
bit 3 EXIDE: Extended Identifier Enable bit
1 = Filter is applied only to Extended Frames
0 = Filter is applied only to Standard Frames
bit 2 Unimplemented: Reads as ‘0’
bit 1-0 EID: Extended Identifier Filter bits <17:16>
These bits hold the filter bits to be applied to bits <17:16> of the Extended Identifier portion of a
received message