MCP2515-I/SO Microchip Technology Inc., MCP2515-I/SO Datasheet - Page 18

• Manufacturer Part Number: MCP2515-I/SO
• Description: CAN CONTROLLER WITH SPI INTERFACE
• Manufacturer: Microchip Technology Inc.
• Type: Programmable Peripheral Interfacer

Specifications of MCP2515-I/SO

• Package Type: 18-Pin SOIC
• Voltage, Supply: 2.7-5.5 V
• Lead Free Status / Rohs Status: RoHS Compliant part Electrostatic Device

MCP2515
REGISTER 3-1:
DS21801D-page 18
bit 7
bit 6
bit 5
bit 4
bit 3
bit 2
bit 1-0
TXBnCTRL – TRANSMIT BUFFER n CONTROL REGISTER
(ADDRESS: 30h, 40h, 50h)
bit 7
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 =
10 =
11 =
00 =
Legend:
R = Readable bit
-n = Value at POR
U-0
—
(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)
Highest Message Priority
High Intermediate Message Priority
Low Intermediate Message Priority
Lowest Message Priority
ABTF
R-0
MLOA
R-0
Preliminary
W = Writable bit
‘1’ = Bit is set
TXERR
R-0
TXREQ
R/W-0
U = Unimplemented bit, read as ‘0’
‘0’ = Bit is cleared
U-0
—
© 2005 Microchip Technology Inc.
x = Bit is unknown
R/W-0
TXP1
R/W-0
TXP0
bit 0