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ePWM Registers

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34.4.3.2 Action-Qualifier Software Force Register (AQSFRC)

Figure 34-72. Action-Qualifier Software Force Register (AQSFRC) [offset = 1A]

15 8

Reserved

R-0

7 6 5 4 3 2 1 0

RLDCSF OTSFB ACTSFB OTSFA ACTSFA

R/W-0 R/W-0 R/W-0 R/W-0 R/W-0

LEGEND: R/W = Read/Write; R = Read only; -n = value after reset

Table 34-32. Action-Qualifier Software Force Register (AQSFRC) Field Descriptions

Bit Field Value Description

15-8 Reserved 0 Reserved

7-6 RLDCSF AQCSFRC Active Register Reload From Shadow Options

0 Load on event counter equals zero

1h Load on event counter equals period

2h Load on event counter equals zero or counter equals period

3h Load immediately (the active register is directly accessed by the CPU and is not loaded from the

shadow register).

5 OTSFB One-Time Software Forced Event on Output B

0 Writing a 0 has no effect. Always reads back a 0

This bit is auto cleared once a write to this register is complete (that is, a forced event is initiated.)

This is a one-shot forced event. It can be overridden by another subsequent event on output B.

1 Initiates a single s/w forced event

4-3 ACTSFB Action when One-Time Software Force B Is invoked

0 Does nothing (action disabled)

1h Clear (low)

2h Set (high)

3h Toggle (Low -> High, High -> Low)

Note: This action is not qualified by counter direction (CNT_dir)

2 OTSFA One-Time Software Forced Event on Output A

0 Writing a 0 has no effect. Always reads back a 0.

This bit is auto cleared once a write to this register is complete (that is, a forced event is initiated).

1 Initiates a single software forced event

1-0 ACTSFA Action When One-Time Software Force A Is Invoked

0 Does nothing (action disabled)

1h Clear (low)

2h Set (high)

3h Toggle (Low → High, High → Low)

Note: This action is not qualified by counter direction (CNT_dir)

1796

Enhanced Pulse Width Modulator (ePWM) Module SPNU562–May 2014

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