In AD7190's datasheet, in the section "continuous conversion mode", p. 31:
If CS is low, the DOUT/RDY line also goes low when a conversion is completed.
If CS is high, and when a conversion done, won't the DOUT/RDY line go to low?
Actually, I want to maintain the CS pin low when ADC in conversion, only when the conversion done, pull it low to read back the data, just like ADI's another ADC AD7606. Because it seems AD7190 always monitor DIN pin when working, so maintaining CS low always makes it more sensitive to interferences.