DMA, Interrupts and Events

Table 1. Module Request for SERCOM USART
Condition Request
DMA Interrupt Event
Data Register Empty (DRE) Yes

(request cleared when data is written)

Yes NA
Receive Complete (RXC) Yes

(request cleared when data is read)

Transmit Complete (TXC) NA Yes
Receive Start (RXS) NA Yes
Clear to Send Input Change (CTSIC) NA Yes
Receive Break (RXBRK) NA Yes
Error (ERROR) NA Yes