PIC18F258 MICROCHIP [Microchip Technology], PIC18F258 Datasheet - Page 209

• Manufacturer Part Number: PIC18F258
• Description: High Performance, 28/40-Pin Enhanced FLASH Microcontrollers with CAN
• Manufacturer: MICROCHIP [Microchip Technology]

REGISTER 19-10: TXBnDLC – TRANSMIT BUFFER n DATA LENGTH CODE REGISTERS
REGISTER 19-11: TXERRCNT – TRANSMIT ERROR COUNT REGISTER
 2002 Microchip Technology Inc.
bit 7-0
bit 7
bit 6
bit 5-4
bit 3-0
bit 7
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
TEC7:TEC0: Transmit Error Counter bits
This register contains a value which is derived from the rate at which errors occur. When the
error count overflows, the bus-off state occurs. When the bus has 128 occurrences of 11
consecutive recessive bits, the counter value is cleared.
Legend:
R = Readable bit
- n = Value at POR
Legend:
R = Readable bit
- n = Value at POR
TEC7
R-0
U-0
—
TXRTR
R/W-x
TEC6
R-0
W = Writable bit
’1’ = Bit is set
W = Writable bit
’1’ = Bit is set
TEC5
R-0
U-0
Preliminary
—
TEC4
R-0
U-0
—
R/W-x
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
DLC3
TEC3
U = Unimplemented bit, read as ‘0’
’0’ = Bit is cleared
R-0
R/W-x
DLC2
TEC2
R-0
PIC18FXX8
x = Bit is unknown
x = Bit is unknown
R/W-x
DLC1
TEC1
R-0
DS41159B-page 207
R/W-x
DLC0
TEC0
R-0
bit 0
bit 0