MCP2510
DS21291F-page 20
2007 Microchip Technology Inc.
REGISTER 3-7:
TXBNDLC - Transmit Buffer N Data Length Code
(ADDRESS: 35h, 45h, 55h)
REGISTER 3-8:
TXBNDM - Transmit Buffer N Data Field Byte m
(ADDRESS: 36h-3Dh, 46h-4Dh, 56h-5Dh)
R/W-x
—RTR
—
DLC3DLC2DLC1DLC0
bit 7
bit 0
bit 7
Unimplemented: Reads as '0’
bit 6
RTR: Remote Transmission Request Bit
1
= Transmitted Message will be a Remote Transmit Request
0
= Transmitted Message will be a Data Frame
bit 5-4
Unimplemented: Reads as '0’
bit 3-0
DLC<3:0>: Data Length Code
Sets the number of data bytes to be transmitted (0 to 8 bytes)
Note:
It is possible to set the DLC to a value greater than 8, however only 8 bytes are trans-
mitted
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
’1’ = Bit is set
’0’ = Bit is cleared
x = Bit is unknown
R/W-x
TXBNDm
7
TXBNDm
6
TXBNDm
5
TXBNDm
4
TXBNDm
3
TXBNDm
2
TXBNDm
1
TXBNDm
0
bit 7
bit 0
bit 7-0
TXBNDM7:TXBNDM0: Transmit Buffer N Data Field Byte m
Legend:
R = Readable bit
W = Writable bit
U = Unimplemented bit, read as ‘0’
-n = Value at POR
’1’ = Bit is set
’0’ = Bit is cleared
x = Bit is unknown