KBox C-102 - User Guide, Rev. 1.0
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17.2.3.
Reset Status Register RSTAT
This register is implemented to determine the cause of system reset’s or shutdown.
Table 28: Reset Status Register RSTAT
0x105
Reset Status Register RSTAT
Bit
7
6
5
4
3
2
1
0
Name
PORS
CBRS
SYSRS
MWDTS
THRMS
FPRS
SHDNS
WDRS
Access
R/W
R/W
R/W
R/W
R/W
R/W
R/W
R/W
Reset P
0
0
0
0
0
0
0
0
PORS:
Power On Reset Status – This bit distinguishes the cause of a system reset
0 = System reset generated by software (warm start)
1 = System reset generated by power on (cold start)
CBRS:
Carrier Board Reset Status – This bit if set reports COMe module caused reset by using CB_RESET# line.
0 = CB_RESET# not generated by COMe module.
1 = CB_RESET# generated by COMe module.
SYSRS: System Reset Status – This bit if set reports CPLD logic caused reset by using SYS_RESET# line.
0 = SYS_RESET# not generated by CPLD logic.
1 = SYS_RESET# generated by CPLD logic.
MWDTS: Module Watchdog Trigger Status – This bit if set reports COMe module caused reset by watchdog signal line
WDT.
0 = System reset not generated by WDT signal line.
1 = System reset generated by WDT signal line.
THRMS: Thermal Status – This bit if set reports COMe module caused reset with THRMTRIP# line asserted.
0 = THRMTRIP# not asserted by COMe module.
1 = THRMTRIP# asserted by COMe module.
FPRS:
Front Panel Reset Status – This bit if set reports reset caused by front panel button pressed longer than
four seconds.
0 = System reset not generated by front panel reset event.
1 = System reset generated by front panel reset event.
SHDNS: Shutdown Status – This bit if set reports shutdown was intentional.
0 = Unexpected shutdown occurred.
1 = Shutdown executed (intentional or because of power failure)
WDRS: Watchdog Reset Status – This bit if set reports reset was caused by CPLD watchdog implementation.
0 = System reset not generated by CPLD watchdog timeout.
1 = System reset generated by CPLD watchdog timeout.
