pub type RsrcW<'a, REG> = BitWriter<'a, REG, Rsrc>;
Field RSRC writer - Receiver Source Select
RSRC
pub struct RsrcW<'a, REG> { /* private fields */ }
Provided LOOPS is set, RSRC is cleared, selects internal loop back mode and the LPUART does not use the RXD pin.
Single-wire LPUART mode where the TXD pin is connected to the transmitter output and receiver input.