45.6.10.8.6 Indeterminate Time

See “comm_type”.

Like Beta1, the IDT value is different depending on what was the previous frame (transmitted or received frame).

IDTRx and IDTTx can be configured respectively through the USART LON IDT Rx register (US_LONIDTRX) and the USART LON IDT Tx register (US_LONIDTTX).