MCP2510-EP Microchip Technology, MCP2510-EP Datasheet - Page 17

• Manufacturer Part Number: MCP2510-EP
• Description: Stand-Alone CAN Controller with SPI Interface
• Manufacturer: Microchip Technology

REGISTER 3-1: TXB
1999 Microchip Technology Inc.
bit 7:
bit 6:
bit 5:
bit 4:
bit 3:
bit 2:
bit 1-0: TXP<1:0>: Transmit Buffer Priority
bit 7
U-0
—
Unimplemented: Reads as ‘0’
ABTF: Message Aborted Flag
1 = Message was aborted
0 = Message completed transmission successfully
MLOA: Message Lost Arbitration
1 = Message lost arbitration while being sent
0 = Message did not lose arbitration while being sent
TXERR: Transmission Error Detected
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
1 = Buffer is currently pending transmission
0 = Buffer is not currently pending transmission
Unimplemented: Reads as ‘0’
11 = Highest Message Priority
10 = High Intermediate Message Priority
01 = Low Intermediate Message Priority
00 = Lowest Message Priority
ABTF
R-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)
MLOA
N
R-0
CTRL Transmit Buffer
TXERR TXREQ
R-0
R/W-0
N
Control Register (ADDRESS: 30h, 40h, 50h)
Preliminary
U-0
—
R/W-0
TXP1
bit 0
R/W-0
TXP0
R = Readable bit
W = Writable bit
C = Bit can be cleared by
U = Unimplemented -
- n = Value at POR reset
MCU but not set
reads as ‘0’
MCP2510
DS21291C-page 17