
PIC18F2682/2685/4682/4685
DS39761C-page 300
2009 Microchip Technology Inc.
REGISTER 23-26: BnSIDL: TX/RX BUFFER n STANDARD IDENTIFIER REGISTERS,
LOW BYTE IN RECEIVE MODE [0
≤ n ≤ 5, TXnEN (BSEL0<n>) = 0](1)
R-x
U-0
R-x
SID2
SID1
SID0
SRR
EXID
—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
SID2:SID0: Standard Identifier bits (if EXID = 0)
Extended Identifier bits EID20:EID18 (if EXID = 1).
bit 4
SRR: Substitute Remote Transmission Request bit (only when EXID = 1)
1 = Remote transmission request occurred
0 = No remote transmission request occurred
bit 3
EXID: Extended Identifier Enable bit
1 = Received message is an extended identifier frame (SID10:SID0 are EID28:EID18)
0 = Received message is a standard identifier frame
bit 2
Unimplemented: Read as ‘0’
bit 1-0
EID17:EID16: Extended Identifier bits
Note 1:
These registers are available in Mode 1 and 2 only.
REGISTER 23-27: BnSIDL: TX/RX BUFFER n STANDARD IDENTIFIER REGISTERS,
LOW BYTE IN RECEIVE MODE [0
≤ n ≤ 5, TXnEN (BSEL0<n>) = 1](1)
R/W-x
U-0
R/W-x
U-0
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
SID2:SID0: Standard Identifier bits (if EXIDE = 0)
Extended Identifier bits EID20:EID18 (if EXIDE = 1).
bit 4
Unimplemented: Read as ‘0’
bit 3
EXIDE: Extended Identifier Enable bit
1 = Received message is an extended identifier frame (SID10:SID0 are EID28:EID18)
0 = Received message is a standard identifier frame
bit 2
Unimplemented: Read as ‘0’
bit 1-0
EID17:EID16: Extended Identifier bits
Note 1:
These registers are available in Mode 1 and 2 only.