Fujitsu FR81S User Manual
CHAPTER 41: CAN
4. Registers
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER
: CAN
FUJITSU SEMICONDUCTOR CONFIDENTIAL
45
Note:
The received DLC will be stored in the DLC bit when the data frame is received.
Data 0 to 7: Data 0 to 7
Function
Data 0
First data byte of the CAN data frame
Data 1
Second data byte of the CAN data frame
Data 2
Third data byte of the CAN data frame
Data 3
Fourth data byte of the CAN data frame
Data 4
Fifth data byte of the CAN data frame
Data 5
Sixth data byte of the CAN data frame
Data 6
Seventh data byte of the CAN data frame
Data 7
Eighth data byte of the CAN data frame
Notes:
⋅
Serial output to the CAN bus is output from MSB (bit7 or bit15).
⋅
If the received message data is less than 8 bytes, the remaining byte data of the data register will be
undefined.
⋅
Data transfer to the message object will be in units of 4 bytes of Data A or Data B. It is therefore not
possible to update only a part of the 4-byte data.
MB91520 Series
MN705-00010-1v0-E
1738