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Original question:

ADS1262: Unable to capturing serial data coming DOUT/DRDY pin

ADS1262: Serial Interface waveform details

Bharat Arambhadiya
Prodigy 20 points
Part Number: ADS1262
Other Parts Discussed in Thread: TIPD188,

Hi Chris

Thank you for providing TIPD188 example code.

One thing I noticed in your conversation with Mr. Shambhu, I can't find waveform in ADS 1262 data sheet, you shown in your answer.

Since ADS 1262 is 10 channel ADC, how to get data of single channel only ?

Should I refer to some other documents ?

As I am unable to find complete waveform data of serial interface data..

Thanks & Regards

Bharat

  • 0
    TI__Mastermind 44600 points
    Hi Bharat,

    The ADS1262 is a 10-channel multiplexed ADC, meaning that the ADC only provides data for single channel at at given time. To change channels, you must write to the INPMUX register to change the MUX inputs, wait for /DRDY to go to (indicating that the conversion is complete), then you can read data from that channel (and only that channel).

    The ADS1262 datasheet shows an example SPI waveform for most SPI commands, but the one that is most relevant is Figure 108 for the "RDATA" command.

    I hope that provides some additional clarity!