Fujitsu FR81S Manuale Utente
CHAPTER 41: CAN
4. Registers
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER
: CAN
FUJITSU SEMICONDUCTOR CONFIDENTIAL
43
MDir: Message direction mask bit
MDir
Function
0
Masks the message direction bit (Dir) in the acceptance filter.
1
Does not mask the message direction bit (Dir) in the acceptance filter.
Note:
Always set the MDir bit to "1".
EoB: End of Buffer bit (see "5.4. FIFO Buffer Function " for details)
EoB
Function
0
Indicates that the massage object is used as FIFO buffer and is not the final message.
1
Indicates a single message object or the final message object of FIFO buffer.
Notes:
⋅
The EoB bit is used to configure the FIFO buffer of 2 to 32 messages.
⋅
Always set the EoB bit to "1" in the case of a single message object (when FIFO is not used).
NewDat: Data update bit
NewDat
Function
0
Valid data does not exist.
1
Valid data exists.
MsgLst: Message lost
MsgLst
Function
0
No message lost occurs.
1
Message lost occurs.
Note:
The MsgLst bit is only enabled when the Dir bit is "0" (reception direction).
RxIE: Reception interrupt flag enable bit
RxIE
Function
0
The IntPnd remains unchanged after successful frame reception.
1
The IntPnd is set to "1" after successful frame reception.
MB91520 Series
MN705-00010-1v0-E
1736