4.1.3.6 Power Supplies
The 32.768 kHz crystal oscillator and the slow RC oscillator are powered by VDDBU.
The main crystal oscillator, the main RC oscillator, PLLA and AUDIOPLL are powered by VDDANA.
LVDSPLL and MIPIPLL are powered by VDDOUT25 (internally or externally).
UPLL is powered by VDDUTM.