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Microchip Technology MA330025-1 Data Sheet

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 2009-2012 Microchip Technology Inc.
DS70616G-page 381
dsPIC33EPXXX(GP/MC/MU)806/810/814 and PIC24EPXXX(GP/GU)810/814
21.5
ECAN Message Buffers
ECAN Message Buffers are part of DMA RAM memory.
They are not ECAN Special Function Registers. The
user application must directly write into the DMA RAM
area that is configured for ECAN Message Buffers. The
location and size of the buffer area is defined by the
user application.
BUFFER 21-1:
ECAN™ MESSAGE BUFFER WORD 0
U-0
U-0
U-0
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
—
—
—
SID10
SID9
SID8
SID7
SID6
bit 15
bit 8
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
SID5
SID4
SID3
SID2
SID1
SID0
SRR
IDE
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 15-13
Unimplemented: Read as ‘0’
bit 12-2
SID<10:0>: Standard Identifier bits
bit 1
SRR: Substitute Remote Request bit
When TXIDE = 0:
1 = Message will request remote transmission
0 = Normal message
When TXIDE = 1:
The SRR bit must be set to ‘1’.
bit 0
IDE: Extended Identifier bit
1 = Message will transmit extended identifier 
0 = Message will transmit standard identifier
BUFFER 21-2:
ECAN™ MESSAGE BUFFER WORD 1
U-0
U-0
U-0
U-0
R/W-x
R/W-x
R/W-x
R/W-x
—
—
—
—
EID17
EID16
EID15
EID14
bit 15
bit 8
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
R/W-x
EID13
EID12
EID11
EID10
EID9
EID8
EID7
EID6
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 15-12
Unimplemented: Read as ‘0’
bit 11-0
EID<17:6>: Extended Identifier bits