16.5.2 Channel n Generator Selection

Each event channel can be connected to a single event generator.

Refer to the Peripheral Overview section for the available Event System channels.

Name:	CHANNELn
Offset:	0x10 + n*0x01 [n=0..3]
Reset:	0x00
Property:	-


Bit	7	6	5	4	3	2	1	0
	CHANNEL[7:0]
Access	R/W	R/W	R/W	R/W	R/W	R/W	R/W	R/W
Reset	0	0	0	0	0	0	0	0

Bits 7:0 – CHANNEL[7:0] Channel Generator Selection

This bit field controls which event generator is connected to this event channel.

Note: Not all generators can be connected to all channels. Refer to the table below for further details.

Note:

Not all peripheral instances are available for all pin counts. Refer to the Peripherals and Architecture chapter for details.
Event from PORT pin will be zero if input driver is disabled.
The operational mode of the timer decides when the CAPT flag is raised. Refer to the TCB section for details.


GENERATOR			Async/Sync	Description	Channel Availability
Value	Name
Value	Peripheral⁽¹⁾	Output
0x01	UPDI	SYNCH	Async	Rising edge of SYNCH character detection	All channels
0x06	RTC	OVF	Async	Counter overflow	All channels
0x07		CMP		Compare match
0x08		EVGEN0		Selectable prescaled RTC event
0x09		EVGEN1		Selectable prescaled RTC event
0x10	CCL	LUT0	Async	LUT output level	All channels
0x11		LUT1
0x12		LUT2
0x13		LUT3
0x20	AC0	OUT	Async	Comparator output level	All channels
0x24	ADC0	RES	Sync	Result ready	All channels
0x25		SAMP		Sample ready
0x26		WCMP		Window comparison match
0x40	PORTA	EVGEN0	Async	Pin level⁽²⁾	All channels
0x41	PORTA	EVGEN1	Async	Pin level⁽²⁾	All channels
0x44	PORTC	EVGEN0	Async	Pin level⁽²⁾	All channels
0x45	PORTC	EVGEN1	Async	Pin level⁽²⁾	All channels
0x46	PORTD	EVGEN0	Async	Pin level⁽²⁾	All channels
0x47	PORTD	EVGEN1	Async	Pin level⁽²⁾	All channels
0x4A	PORTF	EVGEN0	Async	Pin level⁽²⁾	All channels
0x4B	PORTF	EVGEN1	Async	Pin level⁽²⁾	All channels
0x60	USART0	XCK	Sync	Clock signal in SPI Host mode and synchronous USART Host mode	All channels
0x68	SPI0	SCK	Sync	SPI Host clock signal	All channels
0x80	TCE0	OVF	Sync	Overflow/Low-byte timer underflow	All channels
0x84		CMP0	Sync	Compare channel 0 match/Low-byte timer compare channel 0 match
0x85		CMP1		Compare channel 1 match/Low-byte timer compare channel 1 match
0x86		CMP2		Compare channel 2 match/Low-byte timer compare channel 2 match
0xA0	TCB0	CAPT	Sync	CAPT Interrupt flag set⁽³⁾	All channels
0xA1	TCB0	OVF	Sync	Counter overflow	All channels
0xA2	TCB1	CAPT	Sync	CAPT Interrupt flag set⁽³⁾	All channels
0xA3	TCB1	OVF	Sync	Counter overflow	All channels