I'm using the TMS32028335 and considering software checks relating to the on-board ADC calibration.
After having read the datasheet and associated notes, such as SPRAAD8A and SPRAAS1D, I now understand the basic principles behind calibration and gain/offset correction methods, together with the expected performance of a properly configured and calibrated ADC.
However, we have a residual question, relating the range of expected values for the ADCOFFTRIM register - Is it possible to bound the range of values reasonable for a properly functional and configured device? We are considering this as part of a self-check routine, i.e. values outside the expected range being indicative of some fault, either internal to the device or the external components affecting ADC operation, but it is proving challenging to locate such information in the device literature