I'm not sure how to start a conversion on e.g. the capacitive channel. I have found the CAPEN bit in the Cap Setup register, the mode settings for single conversion and the RDYCAP Bit in the Status register. But I do not understand when a new conversion is started in single mode, because when I wait until the RDYCAP indicates a complete conversion, I read the conversion result and again check the RDYCAP Bit it again indicates a complete conversion. So when does the AD7747 start a conversion (and when does it start a new conversion) in single conversion mode?