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Forum Post: RE: ADS1299: DRDY Always Pulled High and DOUT does not respond to read commands

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Hey Tom, no I am unable to read anything off the registers. I can use the oscilloscope to see the correct command being sent, but there is nothing returned on the DOUT pin. VCAP1-4 are respectively, 2.5,1.2,3.9,0.4. We have -2.5V connected to VSS as we are running a bipolar setup. The grounds are tied together so that the reference is correct.

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