MCP2515-E/SORB4 Microchip, MCP2515-E/SORB4 Datasheet - Page 18
![no-image](/images/no-image-200.jpg)
MCP2515-E/SORB4
Manufacturer Part Number
MCP2515-E/SORB4
Description
Manufacturer
Microchip
Datasheet
1.MCP2515-ESORB4.pdf
(88 pages)
- Current page: 18 of 88
- Download datasheet (2Mb)
MCP2515
REGISTER 3-1:
DS21801F-page 18
bit 7
Legend:
R = Readable bit
-n = Value at POR
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1-0
U-0
—
Unimplemented: Read as ‘0’
ABTF: Message Aborted Flag bit
1 = Message was aborted
0 = Message completed transmission successfully
MLOA: Message Lost Arbitration bit
1 = Message lost arbitration while being sent
0 = Message did not lose arbitration while being sent
TXERR: Transmission Error Detected bit
1 = A bus error occurred while the message was being transmitted
0 = No bus error occurred while the message was being transmitted
TXREQ: Message Transmit Request bit
1 = Buffer is currently pending transmission
0 = Buffer is not currently pending transmission
Unimplemented: Read as ‘0’
TXP: Transmit Buffer Priority <1:0> bits
11 = Highest Message Priority
10 = High Intermediate Message Priority
01 = Low Intermediate Message Priority
00 = Lowest Message Priority
ABTF
(MCU sets this bit to request message be transmitted - bit is automatically cleared when
the message is sent)
(MCU can clear this bit to request a message abort)
R-0
TXBnCTRL – TRANSMIT BUFFER n CONTROL REGISTER
(ADDRESS: 30h, 40h, 50h)
W = Writable bit
‘1’ = Bit is set
MLOA
R-0
TXERR
R-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
TXREQ
R/W-0
U-0
—
© 2010 Microchip Technology Inc.
x = Bit is unknown
R/W-0
TXP1
R/W-0
TXP0
bit 0
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