34.12.12 Event Input Control

There are up to four input event pins for each PORT group. Each byte of this register addresses one Event input pin.

Table 34-15. Register Bit Attribute Legend
Symbol	Description	Symbol	Description	Symbol	Description
R	Readable bit	HC	Cleared by Hardware	(Grey cell)	Unimplemented
W	Writable bit	HS	Set by Hardware	X	Bit is unknown at Reset
K	Write to clear	S	Software settable bit	—	—

Bits 7, 15, 23, 31 – PORTEIx PORT Event Input Enable x [x = 3..0]

Value	Description
0	The event action x (EVACTx) will not be triggered on any incoming event.
1	The event action x (EVACTx) will be triggered on any incoming event.

These bits define the event action the PORT will perform on event input x.

These bits define the I/O pin on which the event action will be performed, according to the following table.

Table 34-16. PORT Event x Action ( x = [3..0] )
Value	Name	Description
0x0	OUT	Output register of pin will be set to level of event.
0x1	SET	Set output register of pin on event.
0x2	CLR	Clear output register of pin on event.
0x3	TGL	Toggle output register of pin on event.

Table 34-17. PORT Event x Pin Identifier ( x = [3..0] )
Value	Name	Description
0x0	PIN0	Event action to be executed on PIN 0.
0x1	PIN1	Event action to be executed on PIN 1.
...	...	...
0x31	PIN31	Event action to be executed on PIN 31.