Datasheet

 2003-2019 Microchip Technology Inc. DS20001801J-page 35
MCP2515
REGISTER 4-10: RXFnSIDH: FILTER n STANDARD IDENTIFIER REGISTER HIGH
(ADDRESS: 00h, 04h, 08h, 10h, 14h, 18h)
(1)
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[10:3]: Standard Identifier Filter bits
These bits hold the filter bits to be applied to bits[10:3] of the Standard Identifier portion of a received
message.
Note 1: The Mask and Filter registers read all ‘0’s when in any mode except Configuration mode.
REGISTER 4-11: RXFnSIDL: FILTER n STANDARD IDENTIFIER REGISTER LOW
(ADDRESS: 01h, 05h, 09h, 11h, 15h, 19h)
(1)
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 — EID17 EID16
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[2:0]: Standard Identifier Filter bits
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: Read 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: Read as ‘0’
bit 1-0 EID[17:16]: Extended Identifier Filter bits
These bits hold the filter bits to be applied to bits[17:16] of the Extended Identifier portion of a received
message.
Note 1: The Mask and Filter registers read all ‘0’s when in any mode except Configuration mode.