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In FS6500 SBC, what happens if MCU fails to service watchdog in the 1st 256ms refresh period?

Question asked by Vaibhav Sharma on Apr 1, 2019
Latest reply on Apr 9, 2019 by Dennis Zeng

As to switch from INIT_FS mode to Normal_WD mode in SBC, 1 good watchdog refresh is essential by MCU; but if the MCU fails to do so in 256msec, then RSTB, FS0B & FS1B(after Tdelay time) are asserted low. So at this time, SBC remains in INIT_FS mode only & the window of 256msec expires, then what happens next? Does it move into Deep Failsafe state? or SBC restarts?

 

 

Thanks in advance.

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