The SRP and SRN pins are the inputs for current sense measurement from the Main ADC. The intent of this measurement path is to serve as a redundancy current measurement. The SRP/N inputs have the BCI and AAF filters in the front end. This differential current sense measurement path has an option to pass-through a post-ADC digital LPF.

The Main ADC current sense measurement is reported in the CSAUX_HI (high-byte) and CSAUX_LO (low-byte) registers. If the digital LPF is disabled, the result registers are reported with the single ADC conversion value; otherwise, the result is reported in the filtered measurement value.