pub type SastW<'a, REG> = BitWriter<'a, REG, Sast>;
Field SAST writer - Set All START Bits (activates all channels)
SAST
pub struct SastW<'a, REG> { /* private fields */ }
Set only the TCDn_CSR[START] bit specified in the SSRT field
Set all bits in TCDn_CSR[START]