关键词: 国产化板卡, 看门狗, 定时器, 复位系统

Abstract: A reset circuit is designed to satisfy the requirements of the reset system when the operating system is loaded with localized boards. The architecture of timer, watchdog and buffer is adopted to meet the requirements that the system reset signal must keep a high level when the localized board is loaded into the system. After the system is loaded, the CPU outputs the dog feeding signal, and the reset system monitors the operation of the CPU. Once the crash occurs, the CPU is reset, and the system is reloaded. Through principle analysis, circuit planning and principle verification board test, the rationality and feasibility of the reset system design are verified.

Key words: localizedboard, watchdog, timer, resetsystem