Timm Did you ever find a solution to this? The technical reference manual says on page 579, under register SENS_SAR_START_FORCE_REG: SENS_SAR2_EN_TEST SAR2_EN_TEST is active only when reg_sar2_dig_force = 0. (R/W) The reg_sar2_dig_force is not defined any where, I assume they mean SENS_SAR2_DIG_FORC...