40.7.6 Recoverable Fault B Configuration

Table 40-14. 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	—	—


Bit	31	30	29	28	27	26	25	24
					FILTERVAL[3:0]
Access
Reset					0	0	0	0


Bit	23	22	21	20	19	18	17	16
	BLANKVAL[7:0]
Access
Reset	0	0	0	0	0	0	0	0


Bit	15	14	13	12	11	10	9	8
	BLANKPRESC	CAPTURE[2:0]			CHSEL[1:0]		HALT[1:0]
Access
Reset	0	0	0	0	0	0	0	0


Bit	7	6	5	4	3	2	1	0
	RESTART	BLANK[1:0]		QUAL	KEEP		SRC[1:0]
Access
Reset	0	0	0	0	0		0	0

Bits 27:24 – FILTERVAL[3:0] Fault B Filter Value

These bits define the filter value applied on FAULT B (MCE1) event input line. An Input signal with pulse width shorter than (FILTERVAL) * GCLK_TCCx is filtered. An Input signal with pulse width larger than (FILTERVAL+1) * GCLK_TCCx is passed. The value must be set to zero when this event is used as synchronous event.

Bits 23:16 – BLANKVAL[7:0] Fault B Blanking Time

These bits determine the duration of the blanking of the fault input source. Activation and edge selection of the blank filtering are done by the BLANK bits (FCTRLB.BLANK(FCTRLB<6:5>)).

When enabled, the fault input source is internally disabled for BLANKVAL* prescaled GCLK_TCCx periods after the detection of the waveform edge.

Bit 15 – BLANKPRESC Fault B Blanking Prescaler

This bit enables a factor 64 prescaler factor on used as base frequency of the BLANKVAL value.

Value	Description
0	Blank time is BLANKVAL* prescaled GCLK_TCCx.
1	Blank time is BLANKVAL* 64 * prescaled GCLK_TCCx.

Bits 14:12 – CAPTURE[2:0] Fault B Capture Action

These bits select the capture and Fault B interrupt/event conditions.

Table 40-15. Fault B Capture Action
Value	Name	Description
0x0	DISABLE	Capture on valid recoverable Fault B is disabled
0x1	CAPT	On rising edge of a valid recoverable Fault B, capture counter value on channel selected by FCTRLB.CHSEL bits (FCTRLB <11:10>). INTFLAG.FAULTB (INTFLAG<13>) flag rises on each new captured value.
0x2	CAPTMIN	On rising edge of a valid recoverable Fault B, capture counter value on channel selected byFCTRLB.CHSEL bits (FCTRLB <11:10>), if COUNT value is lower than the last stored capture value (CC). INTFLAG.FAULTB (INTFLAG<13>) flag rises on each local minimum detection.
0x3	CAPTMAX	On rising edge of a valid recoverable Fault B, capture counter value on channel selected by FCTRLB.CHSEL bits (FCTRLB <11:10>), if COUNT value is higher than the last stored capture value (CC). INTFLAG.FAULTB (INTFLAG<13>) flag rises on each local maximun detection.
0x4	LOCMIN	On rising edge of a valid recoverable Fault B, capture counter value on channel selected by FCTRLB.CHSEL bits (FCTRLB <11:10>). INTFLAG.FAULTB (INTFLAG<13>) flag rises on each local minimum value detection.
0x5	LOCMAX	On rising edge of a valid recoverable Fault B, capture counter value on channel selected by FCTRLB.CHSEL bits (FCTRLB <11:10>). INTFLAG.FAULTB (INTFLAG<13>) flag rises on each local maximun detection.
0x6	DERIV0	On rising edge of a valid recoverable Fault B, capture counter value on channel selected by FCTRLB.CHSEL bits (FCTRLB <11:10>). INTFLAG.FAULTB (INTFLAG<13>) flag rises on each local maximun or minimum detection.
0x7	CAPTMARK	Capture with Ramp index as MSB value.

Value	Name	Description
0	DISABLE	No capture
1	CAPT	Capture on fault
2	CAPTMIN	Minimum capture
3	CAPTMAX	Maximum capture
4	LOCMIN	Minimum local detection
5	LOCMAX	Maximum local detection
6	DERIV0	Minimum and maximum local detection
7	CAPTMARK	Capture with ramp index as MSB value

Bits 11:10 – CHSEL[1:0] Fault B Capture Channel

These bits select the channel for capture operation triggered by recoverable Fault B.

Value	Name	Description
0	CC0	Capture value stored in channel 0
1	CC1	Capture value stored in channel 1
2	CC2	Capture value stored in channel 2
3	CC3	Capture value stored in channel 3

Bits 9:8 – HALT[1:0] Fault B Halt Mode

These bits select the halt action for recoverable Fault B.

Value	Name	Description
0	DISABLE	Halt action disabled
1	HW	Hardware halt action
2	SW	Software halt action
3	NR	Non-recoverable fault

Bit 7 – RESTART Fault B Restart

Setting this bit enables restart action for Fault B.

Value	Description
0	Fault B restart action is disabled.
1	Fault B restart action is enabled.

Bits 6:5 – BLANK[1:0] Fault B Blanking Mode

These bits, select the blanking start point for recoverable Fault B.

Value	Name	Description
0	START	Blanking applied from start of the ramp
1	RISE	Blanking applied from rising edge of the output waveform
2	FALL	Blanking applied from falling edge of the output waveform
3	BOTH	Blanking applied from each toggle of the output waveform

Bit 4 – QUAL Fault B Qualification

Setting this bit enables the recoverable Fault B input qualification.

Value	Description
0	The recoverable Fault B input is not disabled on CMPy value condition.
1	The recoverable Fault B input is disabled when output signal is at inactive level (CMPy = 0).

Bit 3 – KEEP Fault B Keeper

Setting this bit enables the Fault B keep action.

Value	Description
0	The Fault B state is released as soon as the recoverable Fault B is released.
1	The Fault B state is released at the end of TCC cycle.

Bits 1:0 – SRC[1:0] Fault B Source

These bits select the TCC Fault B mode.

Event system channel connected to Match or Capture Channel 1 (MCE1) event input, must be configured to route the event asynchronously, when used as a recoverable Fault B input.

Value	Name	Description
0	DISABLE	Fault input disabled
1	ENABLE	MCEx (x=0,1) event input
2	INVERT	Inverted MCEx (x=0,1) event input
3	ALTFAULT	Alternate fault (A or B) state at the end of the previous period

Name:	FCTRLB
Offset:	0x10
Reset:	0x00000000
Property:	RW