XMC4400: ADC: data accumulation

[jsmith678x]

Hi,

We have this figure in the reference manual. 

17.8.2 Data Alignment

How we have to interpret this in 12-bit mode? We have 16-bit result in 12-bit mode?

[Vasanth · Accepted solution]

Hi,

In order to increase the resolution or remove some noise from the input signal, the XMC4000 VADC implements three Standard Data Reduction modes. A simple built-in accumulator can sum up two, three or four consecutive conversions into one Result Register. This applies to all available result registers except the Global Result Register. This can increase the resolution without any software computation. So summing up 4 bits can increase the resolution of the final result. The result will be less than 16 bits though.

Best Regards,
Vasanth