參數(shù)資料
型號: MC68HC05X4
廠商: Motorola, Inc.
英文描述: HCMOS Microcontroller Unit
中文描述: HCMOS微控制器
文件頁數(shù): 95/156頁
文件大?。?/td> 926K
代理商: MC68HC05X4
Motorola CAN
Interface to the MC68HC05X4 CPU
MC68HC05X4 Rev 1.0
MOTOROLA
Motorola CAN
95
27-mcan
Remote
transmission
request and data
length code
register (TRTDL)
ID2 – ID0 — Identifier bits
These bits contain the least significant bits of the transmit buffer
identifier.
RTR — Remote transmission request
1 = A remote frame will be transmitted.
0 = A data frame will be transmitted.
DLC3 – DLC0 — Data length code bits.
The data length code contains the number of bytes (data byte count)
of the respective message. At transmission of a remote frame, the
data length code is ignored, forcing the number of bytes to be 0. The
data byte count ranges from 0 to 8 for a data frame.
Table 6
shows
the effect of setting the DLC bits.
Address:
$002B
Bit 7
6
5
4
3
2
1
Bit 0
ID10
ID9
ID8
ID7
ID6
ID5
ID4
ID3
Reset:
Undefined
Figure 16. RTR and Data Length Code Register (TRTDL)
Table 6. Data length codes
Data length code
DLC2
0
0
0
0
1
1
1
1
0
Data byte
count
0
1
2
3
4
5
6
7
8
DLC3
0
0
0
0
0
0
0
0
1
DLC1
0
0
1
1
0
0
1
1
0
DLC0
0
1
0
1
0
1
0
1
0
F
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
.
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