ATmega4808/4809

23.3.5 Events

The USART can generate the events described in the table below.

Table 23-7. Event Generators in USART
Generator Name		Description	Event Type	Generating Clock Domain	Length of Event
Peripheral	Event	Description	Event Type	Generating Clock Domain	Length of Event
USARTn	XCK	The clock signal in SPI Host mode and Synchronous USART Host mode	Pulse	CLK_PER	One XCK period

The table below describes the event user and its associated functionality.

Table 23-8. Event Users in USART
User Name		Description	Input Detection	Async/Sync
Peripheral	Input	Description	Input Detection	Async/Sync
USARTn	IREI	USARTn IrDA event input	Pulse	Sync

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