19.1. About the Watchdog module (SP805)

The Watchdog module is an Advanced Microcontroller Bus Architecture (AMBA) compliant System-on-Chip (SoC) peripheral developed, tested, and licensed by ARM Limited.

The release state of the Watchdog Module used in the ARM926PXP development chip is SP805-r1p0. The base address for the Watchdog control registers is 0x101E1000. For more information on the controller, see the ARM PrimeCell Watchdog Controller (SP805) Technical Reference Manual.

The Watchdog module is an AMBA slave module and connects to the core APB. The Watchdog module consists of a 32-bit down counter with a programmable timeout interval that has the capability to generate an interrupt and a reset signal on timing out. It is intended to be used to apply a reset to a system in the event of a software failure.

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