MCP2515-E/PRB2 Microchip Technology, MCP2515-E/PRB2 Datasheet - Page 21
![no-image](/images/manufacturer_photos/0/4/439/microchip_technology_sml.jpg)
MCP2515-E/PRB2
Manufacturer Part Number
MCP2515-E/PRB2
Description
CAN controller with SPI interface, 125 deg C, -40C to +125C, 18-PDIP, TUBE
Manufacturer
Microchip Technology
Datasheet
1.MCP2515-EPRB2.pdf
(84 pages)
- Current page: 21 of 84
- Download datasheet (486Kb)
REGISTER 3-7:
REGISTER 3-8:
© 2007 Microchip Technology Inc.
M
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5-4
bit 3-0
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7-0
TXBnDm7
R/W-x
R/W-x
—
Unimplemented: Reads as ‘0’
RTR: Remote Transmission Request bit
1 = Transmitted Message will be a Remote Transmit Request
0 = Transmitted Message will be a Data Frame
Unimplemented: Reads as ‘0’
DLC: Data Length Code <3:0> bits
Sets the number of data bytes to be transmitted (0 to 8 bytes)
Note:
TXBnD
TXBnDm6
R/W-x
R/W-x
RTR
TXBnDLC - TRANSMIT BUFFER n DATA LENGTH CODE
(ADDRESS: 35h, 45h, 55h)
TXBnDm – TRANSMIT BUFFER n DATA BYTE m
(ADDRESS: 36h - 3Dh, 46h - 4Dh, 56h - 5Dh)
M
It is possible to set the DLC to a value greater than 8, however only 8 bytes are transmitted
7:TXBnD
W = Writable bit
‘1’ = Bit is set
W = Writable bit
‘1’ = Bit is set
TXBnDm5
R/W-x
R/W-x
M
—
0: Transmit Buffer n Data Field Bytes m
TXBnDm4
R/W-x
R/W-x
—
‘0’ = Bit is cleared
‘0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
U = Unimplemented bit, read as ‘0’
TXBnDm3
R/W-x
R/W-x
DLC3
TXBnDm2
R/W-x
R/W-x
DLC2
x = Bit is unknown
x = Bit is unknown
TXBnDm1
R/W-x
R/W-x
DLC1
MCP2515
DS21801E-page 21
TXBnDm0
R/W-x
R/W-x
DLC0
bit 0
bit 0
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