pub type DIVA_W<'a, const O: u8> = FieldWriter<'a, u32, MR_SPEC, u8, DIVA_A, 8, O>;
Field DIVA writer - CLKA, CLKB Divide Factor
DIVA
CLKA, CLKB clock is turned off
CLKA, CLKB clock is clock selected by PREA, PREB