pub type UPSEL_W<'a> = FieldWriter<'a, u32, CALCTRL_SPEC, u8, UPSEL_A, 3, 0>;
Field UPSEL writer - Calibration Up-counter Select
UPSEL
pub struct UPSEL_W<'a> { /* private fields */ }
Select HFXO as up-counter.
Select LFXO as up-counter.
Select HFRCO as up-counter.
Select LFRCO as up-counter.
Select AUXHFRCO as up-counter.