SWCU191 February 2022 CC1311P3 , CC1311R3 , CC2651P3 , CC2651R3 , CC2651R3SIPA
Several other modules in the device (such as the frequency synthesizer, RF power amplifier, and so forth) have separate internal regulators running at either 1.4 V (analog modules) or 1.28 V (digital modules). These regulators are powered up or down automatically by firmware when needed.