PIC18F45K80-I Datasheet, PDF (421/622 Pages) Microchip Technology – 28/40/44/64-Pin, Enhanced Flash Microcontrollers with ECAN and nanoWatt XLP Technology

PIC18F66K80 FAMILY
27.2.3.2 Message Acceptance Filters
and Masks
This section describes the message acceptance filters
and masks for the CAN receive buffers.
REGISTER 27-37: RXFnSIDH: RECEIVE ACCEPTANCE FILTER ‘n’ STANDARD IDENTIFIER FILTER
REGISTERS, HIGH BYTE [0  n  15]⁽¹⁾
R/W-x
SID10
bit 7
R/W-x
SID9
R/W-x
SID8
R/W-x
SID7
R/W-x
SID6
R/W-x
SID5
R/W-x
SID4
R/W-x
SID3
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-0
SID<10:3>: Standard Identifier Filter bits (if EXIDEN = 0)
Extended Identifier Filter bits, EID<28:21> (if EXIDEN = 1).
Note 1: Registers, RXF6SIDH:RXF15SIDH, are available in Mode 1 and 2 only.
REGISTER 27-38: RXFnSIDL: RECEIVE ACCEPTANCE FILTER ‘n’ STANDARD IDENTIFIER FILTER
REGISTERS, LOW BYTE [0  n  15]⁽¹⁾
R/W-x
SID2
bit 7
R/W-x
SID1
R/W-x
SID0
U-0
R/W-x
U-0
—
EXIDEN⁽²⁾
—
R/W-x
EID17
R/W-x
EID16
bit 0
Legend:
R = Readable bit
-n = Value at POR
W = Writable bit
‘1’ = Bit is set
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
x = Bit is unknown
bit 7-5
bit 4
bit 3
bit 2
bit 1-0
SID<2:0>: Standard Identifier Filter bits (if EXIDEN = 0)
Extended Identifier Filter bits, EID<20:18> (if EXIDEN = 1).
Unimplemented: Read as ‘0’
EXIDEN: Extended Identifier Filter Enable bit⁽²⁾
1 = Filter will only accept extended ID messages
0 = Filter will only accept standard ID messages
Unimplemented: Read as ‘0’
EID<17:16>: Extended Identifier Filter bits
Note 1: Registers, RXF6SIDL:RXF15SIDL, are available in Mode 1 and 2 only.
2: In Mode 0, this bit must be set/cleared as required, irrespective of corresponding mask register value.
 2010-2012 Microchip Technology Inc.
DS39977F-page 421