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ADS7042: Number of clks

Kuramochi Tadahiko
Guru 28715 points
Part Number: ADS7042

Hi,

When reading data, is inputting not 14 clks but16 clks as below allowed?

Best Regards,

KUramochi

  • 0
    TI__Mastermind 25030 points

    Hello,

    Yes 14 SCLK pulses can be used to read the output measurements. The conversion result is available on the SDO pin with the first two bits set to 0, followed by 12 bits of the conversion result. there is no need for 16SCLk to read the conversion data. 

    the image you are referring to is about calibration after start up. when the device powers up, on the first frame to the device, if 16 sclk are provided then the device will complete an offset calibration. 

  • 0 in reply to Cynthia
    Guru 28715 points

    Cynthia-san,

    Thank you for your reply.

    ＞there is no need for 16SCLk to read the conversion data. 

    My customer can input only eight or 16 clocks by their system restriction.

    Are 16 clks allowed when reading data if /CS signal is appropriate?

    Best Regards,

    Kuramochi

  • 0 in reply to Kuramochi Tadahiko
    TI__Mastermind 25030 points

    I understand now,

    Yes the customer can use 16SCLK pulses to read the data, this is acceptable. 

    Note that the device will output zeros after the 14th SCLK pulse.

    Regards

    Cynthia