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Counter for Digital input events

Mikhail Soloviev
Prodigy 10 points
Other Parts Discussed in Thread: ADS7138

The part ADS7138 has registers that keep the count of the input events (EVENT_COUNT_CHx). Do these counters contain the analog events only (passing thresholds)? Can they be configured to count the digital input transitions?  

  • +1
    TI__Mastermind 25020 points

    Hello

    The EVENT_COUNT_CHx only counts events when the channel is configured as an analog input, thus does not apply when the channel is configured as a digital input. If the value of the input is not of a concern and simply the transitions, then the ADC input can be configured as analog input, even though the input will be a digital signal and have thresholds set accordingly to count the transitions.

    Also, would the zero cross detection mode be of interest? this is a feature available in the ADS7128

    Regards

    Cynthia