Fujitsu FR81S User Manual
CHAPTER 49: BUS DIAGNOSIS FUNCTION
5. Operation
FUJITSU SEMICONDUCTOR LIMITED
CHAPTER : BUS DIAGNOSIS FUNCTION
FUJITSU SEMICONDUCTOR CONFIDENTIAL
28
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During Operation
NMI generation
BUSDIGSRn read
Parity error?
YES
BUSADRn read
BUSDIGSRn.PECLR=1 (error clear)
Retry to the error occurrence macro
BUSDIGSRn read
Parity error?
YES
Warning display
NO
NO
n=0
n=2?
NO
n = n+1
End
Note: This shows a case in which one retry is attempted
Does not use the error occurrence macro in the system
YES
MB91520 Series
MN705-00010-1v0-E
2121