Datasheet

MCP2515
DS20001801J-page 38  2003-2019 Microchip Technology Inc.
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REGISTER 4-16: RXMnEID8: MASK n EXTENDED IDENTIFIER REGISTER HIGH
(ADDRESS: 22h, 26h)
(1)
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[15:8]: Extended Identifier bits
These bits hold the filter bits to be applied to bits[15:8] of the Extended Identifier portion of a received
message. If the corresponding RXM[1:0] bits = 00 and EXIDE = 0, these bits are applied to Byte 0 in
received data.
Note 1: The Mask and Filter registers read all ‘0’s when in any mode except Configuration mode.
REGISTER 4-17: RXMnEID0: MASK n EXTENDED IDENTIFIER REGISTER LOW
(ADDRESS: 23h, 27h)
(1)
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[7:0]: Extended Identifier Mask bits
These bits hold the filter bits to be applied to bits[7:0] of the Extended Identifier portion of a received
message. If the corresponding RXM[1:0] bits = 00 and EXIDE = 0, these bits are applied to Byte 1 in
received data.
Note 1: The Mask and Filter registers read all ‘0’s when in any mode except Configuration mode.