WATCHDOG ARRANGEMENT

摘要

A watchdog arrangement advantageously provides systems, such as television signal processing apparatus, with a reliable, cost effective means by which to maintain consistent, stable operation. According to at least one embodiment, a hardware watchdog circuit receives regular pulses from a software timer in an integrated circuit (IC) to refresh itself. In the event that the watchdog circuit is not refreshed, it provides a predetermined logic signal to a non-maskable interrupt (NMI) terminal of the IC to generate a reset similar to what is generated by an internal IC watchdog.