pub type Exs1bW<'a, REG> = FieldWriterSafe<'a, REG, 2, Exs1b>;
Field EXS1B writer - Event Source Select for B1 (ERS1)
EXS1B
struct Exs1bW<'a, REG> { /* private fields */ }
Input ERU_1B0 is selected
Input ERU_1B1 is selected
Input ERU_1B2 is selected
Input ERU_1B3 is selected