Enhanced PWM (ePWM) Module
15.2.4.3.3 Action-Qualifier Software Force Register (AQSFRC)
The action-qualifier software force register (AQSFRC) is shown in
and described in
.
Figure 15-80. Action-Qualifier Software Force Register (AQSFRC)
15
8
7
6
5
4
3
2
1
0
Reserved
RLDCSF
OTSFB
ACTSFB
OTSFA
ACTSFA
R-0
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 15-72. Action-Qualifier Software Force Register (AQSFRC) Field Descriptions
Bit
Field
Value
Description
15-8
Reserved
0
Reserved
7-6
RLDCSF
0-3h
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 (zero) 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
0-3h
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 (zero) 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
0-3h
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)
1592
Pulse-Width Modulation Subsystem (PWMSS)
SPRUH73H – October 2011 – Revised April 2013
Copyright © 2011–2013, Texas Instruments Incorporated