25.5.7 Event Control B


Bit	7	6	5	4	3	2	1	0
	CFG[1:0]			EDGE		ACTION		TRIGEI
Access	R/W	R/W		R/W		R/W		R/W
Reset	0	0		0		0		0

Bits 7:6 – CFG[1:0] Event Configuration

When the input capture noise canceler is activated (FILTERON), the event input is filtered. The filter function requires four successive equal valued samples of the trigger pin to change its output. Therefore, the input capture is delayed by four clock cycles when the noise canceler is enabled (FILTERON).

When the Asynchronous Event is enabled (ASYNCON), the event input will affect the output directly.

Value	Name	Description
0x0	NEITHER	Neither filter nor asynchronous event is enabled
0x1	FILTERON	Input capture noise cancellation filter enabled
0x2	ASYNCON	Asynchronous event output qualification enabled
other	-	Reserved

Bit 4 – EDGE Edge Selection

This bit is used to select the active edge or level for the event input.

Value	Name	Description
0	FALL_LOW	The falling edge or low level of the event input triggers a Capture or Fault action
1	RISE_HIGH	The rising edge or high level of the event input triggers a Capture or Fault action

Bit 2 – ACTION Event Action

This bit enables capturing on the event input. By default, the input will trigger a Fault, depending on the Input Control register’s Input mode. It is also possible to trigger a capture on the event input.

Value	Name	Description
0	FAULT	Event input triggers a Fault
1	CAPTURE	Event input triggers a Fault and a capture

Bit 0 – TRIGEI Trigger Event Input Enable

Writing this bit to ‘1’ enables the event as the trigger for input B.

Name:	EVCTRLB
Offset:	0x09
Reset:	0x00
Property:	-