| Summary: | In view of the disadvantages of the time series signal board,which is realized by logic combination with multiple IC chips,such as complex time series signal synchronization circuit,low synchronization accuracy,unadjustable pulse period and pulse width,and difficult circuit modification.This paper presents a design idea and implementation method of time series signal board based on CPLD,which can generate time series signals of different periods,improve the synchronization accuracy of time series signals,adjust the pulse width, send or receive multiple differential time series signals.It has the characteristics of on-line updating logic,high synchronization accuracy,flexible program control,simple circuit and high reliability.
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