Timeout Detection

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A control bit in the WDOG_CONTROL register is used to determine whether the watchdog timer generates a Reset or an interrupt if a counter time-out occurs. The default setting is Reset generation on time-out. When interrupt generation is selected, the WDOGTIMEOUTINT output is asserted on time-out and remains asserted until the interrupt is cleared. When Reset generation is selected, the watchdog timer does not directly generate the system Reset signal. Instead, when the counter reaches zero, the watchdog timer generates a pulse on the WDOGTIMEOUT output, and this is routed to the Reset controller to cause it to assert the necessary Reset signals.

Note: Only watchdog_0 can reset the MSS. The other watchdogs can only generate interrupts to the E51 core.