2004 Microchip Technology Inc.
DS30491C-page 295
PIC18F6585/8585/6680/8680
REGISTER 23-18: RXBnEIDL: RECEIVE BUFFER n EXTENDED IDENTIFIER REGISTERS,
LOW BYTE [0
≤ n ≤ 1]
REGISTER 23-19: RXBnDLC: RECEIVE BUFFER n DATA LENGTH CODE REGISTERS [0
≤ n ≤ 1]
R-x
EID7
EID6
EID5
EID4
EID3
EID2
EID1
EID0
bit 7
bit 0
bit 7-0
EID7:EID0: Extended Identifier bits
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
U-0
R-x
RXRTR
RB1
RB0
DLC3
DLC2
DLC1
DLC0
bit 7
bit 0
bit 7
Unimplemented: Read as ‘0’
bit 6
RXRTR: Receiver Remote Transmission Request bit
1
= Remote transfer request
0
= No remote transfer request
bit 5
RB1: Reserved bit 1
Reserved by CAN Spec and read as ‘0’.
bit 4
RB0: Reserved bit 0
Reserved by CAN Spec and read as ‘0’.
bit 3-0
DLC3:DLC0: Data Length Code bits
1111
= Invalid
1110
= Invalid
1101
= Invalid
1100
= Invalid
1011
= Invalid
1010
= Invalid
1001
= Invalid
1000
= Data length = 8 bytes
0111
= Data length = 7 bytes
0110
= Data length = 6 bytes
0101
= Data length = 5 bytes
0100
= Data length = 4 bytes
0011
= Data length = 3 bytes
0010
= Data length = 2 bytes
0001
= Data length = 1 bytes
0000
= Data length = 0 bytes
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
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