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ADS1299: Technical support, parameter confirmation for ADS1299

sunm Wang
Prodigy 60 points
Part Number: ADS1299


1 SRB1 related configuration, please confirm whether it is 4, 6 and 8 channels, or the negative end of all channels?

2 

I don't quite understand the multiple-read mode

When the data is in continuous reading mode, it is applicable to multiple reading back

2.1 Do you read back twice or many times?

2.2 When reading back, is ADC conversion continuing? If it continues, will the data that has been converted now be lost?

  • 0
    TI__Mastermind 19815 points

    Hi,

    1. is for all channels, the 4,6, 8 are referring to how many channels of the ADS1299-x has.

    2.1. if you want to use multiple readback feature, "The DAISY_EN bit in the CONFIG1 register must be set to '1' for multiple readbacks."; see page 46 9.6.1.2 CONFIG1:

    2.2. May I ask what do you mean by lost? or explain more about the lost scenario?

    Think about the case, if you repeat readback 1 data for 1 time at t0 and t1(readback the t0 signal), but the true signal in the world is still occurring/happening at t1(the true signal right after t0), t2(the true signal right after t1), and so on.

    But, at t1, one decided to readback(repeat read) the signal at t0, the there is no memory&storage to allow to read the true signal that occurred at t1.

    missed? or lost?

    Thanks