MCF5213 and Watchdog timer documentation

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MCF5213 and Watchdog timer documentation

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Nouchi
Senior Contributor II
Hello,

I want to generate RESET when the watchdog timer reaches timeout period, but the doc chap 10.5.4 says:
"If this periodic servicing action does not occur, the timer times out, resulting in a watchdog timer interrupt or a hardware reset, as programmed, by CWCR[CWRI]"
but table 10.6 says:
"Core watchdog interrupt select.
0 If a time-out occurs, the CWT generates an interrupt to the processor core. The interrupt level for the CWT is programmed in the interrupt control register 7 (ICR7) of INTC0.
1 Reserved. If a one is written undetermined behavior will result.
Note: If a core reset is required, the watchdog interrupt should set the soft reset bit in the interrupt controller."

Where is the truth?

In chapter 10.5.4, they're speaking about CRSR[CWDR], and don't find any reference about this bit in documentation.

Thanks,
Emmanuel

Message Edited by BugMan on 2006-09-12 09:39 AM

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SimonMarsden_de
Contributor II
As far as I know, some earlier ColdFire processors had the ability to RESET on Software Watchdog Timer timeout, but most of the later ones cannot do this. Sounds like the manual got fixed in one place but not the other.
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