Fujitsu FR81S User Manual
CHAPTER 3: CPU
10. Memory Protection Function (MPU)
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CHAPTER : CPU
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10.3.6.
Data Access Error Address Register : DEAR
The bit configuration of the data access error address register is shown.
This register stores the address where a data access error occurred.
DEAR : Address 0328
H
(Access : Word)
bit31
bit30
• • •
bit2
bit1
bit0
DEA[31:0]
Initial value
X
X
• • •
X
X
X
Attribute R,WX R,WX
• • •
R,WX R,WX R,WX
[bit31 to bit0] DEA[31:0] (Data Access Error Address)
This register stores the address where a data access error occurred when a violation has not occurred in the
data access error status register (DESR.DAE =0). If the protection violation occurred while accessing
system registers, the access address from the CPU is stored as it is without being aligned. If the result of
performing a bus access is an error, the address is aligned.
MB91520 Series
MN705-00010-1v0-E
134