PIC18C658 MICROCHIP [Microchip Technology], PIC18C658 Datasheet - Page 192

• Manufacturer Part Number: PIC18C658
• Description: High-Performance Microcontrollers with CAN Module
• Manufacturer: MICROCHIP [Microchip Technology]

PIC18CXX8
REGISTER 17-9:
REGISTER 17-10: TXBnDLC – TRANSMIT BUFFER n DATA LENGTH CODE REGISTER
DS30475A-page 192
bit 7
bit 6
bit 5-4
bit 3-0
bit 1-0
Each Transmit Buffer has an array of registers. For example, Transmit buffer 0 has 7 registers:
TXB0D0 to TXB0D7.
TXBnDm – TRANSMIT BUFFER n DATA FIELD BYTE m REGISTER
bit 7
TXBnDm7 TXBnDm6 TXBnDm5 TXBnDm4 TXBnDm3 TXBnDm2 TXBnDm1 TXBnDm0
Legend:
R = Readable bit
- n = Value at POR
bit 7
Unimplemented: Read as ’0’
TXRTR: Transmission Frame Remote Transmission Request bit
1 = Transmitted message will have TXRTR bit set
0 = Transmitted message will have TXRTR bit cleared.
Unimplemented: Read as ’0’
DLC3:DLC0: Data Length Code bits
1111 = Reserved
1110 = Reserved
1101 = Reserved
1100 = Reserved
1011 = Reserved
1010 = Reserved
1001 = Reserved
1000 = Data Length = 8 bytes
0111 = Data Length = 7 bytes
0110 = Data Length = 6 bytes
0101 = Data Length = 5 bytes
0100 = Data Length = 4 bytes
0011 = Data Length = 3 bytes
0010 = Data Length = 2 bytes
0001 = Data Length = 1 bytes
0000 = Data Length = 0 bytes
TXBnDm7:TXBnDm0: Transmit Buffer n Data Field Byte m bits (where 0 n<3 and 0<m<8)
Legend:
R = Readable bit
- n = Value at POR
R/W-x
U-0
—
TXRTR
R/W-x
R/W-x
Advanced Information
W = Writable bit
’1’ = Bit is set
W = Writable bit
’1’ = Bit is set
R/W-x
U-0
—
R/W-x
U-0
—
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
R/W-x
R/W-x
DLC3
R/W-x
R/W-x
DLC2
2000 Microchip Technology Inc.
x = Bit is unknown
x = Bit is unknown
R/W-x
R/W-x
DLC1
R/W-x
R/W-x
DLC0
bit 0
bit 0