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MCP2515-E/ST Datasheet(PDF) 31 Page - Microchip Technology

Part # MCP2515-E/ST
Description  Stand-Alone CAN Controller With SPI??Interface
PDF  84 Pages
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Manufacturer  MICROCHIP [Microchip Technology]
Direct Link  http://www.microchip.com
Logo MICROCHIP - Microchip Technology

MCP2515-E/ST Datasheet(HTML) 31 Page - Microchip Technology

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© 2005 Microchip Technology Inc.
Preliminary
DS21801D-page 31
MCP2515
REGISTER 4-7:
RXBnEID0 – RECEIVE BUFFER n EXTENDED IDENTIFIER LOW
(ADDRESS: 64h, 74h)
REGISTER 4-8:
RXBnDLC – RECEIVE BUFFER n DATA LENGHT CODE
(ADDRESS: 65h, 75h)
REGISTER 4-9:
RXBnDM – RECEIVE BUFFER n DATA BYTE M
(ADDRESS: 66h - 6Dh, 76h - 7Dh)
R-x
R-x
R-x
R-x
R-x
R-x
R-x
R-x
EID7
EID6
EID5
EID4
EID3
EID2
EID1
EID0
bit 7
bit 0
bit 7-0
EID: Extended Identifier bits <7:0>
These bits hold the least significant eight bits of the Extended Identifier for the received
message
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
R-x
R-x
R-x
R-x
R-x
R-x
—
RTR
RB1
RB0
DLC3
DLC2
DLC1
DLC0
bit 7
bit 0
bit 7
Unimplemented: Reads as ‘0’
bit 6
RTR: Extended Frame Remote Transmission Request bit
(valid only when RXBnSIDL.IDE = ‘1’)
1
= Extended Frame Remote Transmit Request Received
0
= Extended Data Frame Received
bit 5
RB1: Reserved Bit 1
bit 4
RB0: Reserved Bit 0
bit 3-0
DLC: Data Length Code bits <3:0>
Indicates number of data bytes that were received
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
R-x
R-x
R-x
R-x
R-x
R-x
R-x
R-x
RBnDm7
RBnDm6
RBnDm5
RBnDm4
RBnDm3
RBnDm2
RBnDm1
RBnDm0
bit 7
bit 0
bit 7-0
RBnDm7:RBnDm0: Receive Buffer n Data Field Bytes m
Eight bytes containing the data bytes for the received message
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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