Interrupt generating device with synchronization function

Abstract

The application relates to an interrupt generating device with a synchronization function, which comprises a reference timing module, a plurality of interrupt generating modules and a synchronization output module. The reference timing module performs timing of a reference period and outputs a reference pulse. Each of the interrupt generating modules outputs an interrupt signal when the number of received reference pulses reaches an interrupt number. When a synchronization signal output by the synchronization output module arrives, the reference timing module adjusts the period value of at least one reference period following the reference period according to the output information of the reference interrupt signal and the synchronization signal, so that the reference interrupt signal is synchronized with the synchronization signal at the adjusted time, and the interrupt signals output by the interrupt generating modules except the reference interrupt module maintain the initial phase relationship with the reference interrupt signal, and finally are also synchronized with the synchronization signal. Thus, only one synchronization signal is needed, and the synchronization of all the interrupt signals can be realized under the condition that the phase relationship between the interrupt signals of the interrupt generating modules is unchanged, the method is simple, and the synchronization precision is high.

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