参数资料
型号: MCP2515-E/PG
元件分类: 微控制器/微处理器
英文描述: 1 CHANNEL(S), 1M bps, SERIAL COMM CONTROLLER, PDIP18
封装: 0.300 INCH, LEAD FREE, PLASTIC, DIP-18
文件页数: 14/88页
文件大小: 1205K
代理商: MCP2515-E/PG
2010 Microchip Technology Inc.
DS21801F-page 21
MCP2515
M
REGISTER 3-7:
TXBnDLC - TRANSMIT BUFFER n DATA LENGTH CODE
(ADDRESS: 35h, 45h, 55h)
R/W-x
—RTR
DLC3
DLC2
DLC1
DLC0
bit 7
bit 0
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
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: Data Length Code <3:0> bits
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 transmitted
REGISTER 3-8:
TXBnDm – TRANSMIT BUFFER n DATA BYTE m
(ADDRESS: 36h - 3Dh, 46h - 4Dh, 56h - 5Dh)
R/W-x
TXBnDm7
TXBnDm6
TXBnDm5
TXBnDm4
TXBnDm3
TXBnDm2
TXBnDm1
TXBnDm0
bit 7
bit 0
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
bit 7-0
TXBnDm7:TXBnDm0: Transmit Buffer n Data Field Bytes m
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