PLL0831X_PDIV_SHIFT
pdiv = (pll_con3 >> PLL0831X_PDIV_SHIFT) & PLL0831X_PDIV_MASK;
(PLL0831X_PDIV_MASK << PLL0831X_PDIV_SHIFT) |
(rate->pdiv << PLL0831X_PDIV_SHIFT) |