Texas Instruments 28xxx 사용자 설명서
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Action-Qualifier Submodule Registers
Figure 4-11. Action-Qualifier Software Force Register (AQSFRC)
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 4-11. Action-Qualifier Software Force Register (AQSFRC) Field Descriptions
Bit
Field
Value
Description
15:8
Reserved
7:6
RLDCSF
AQCSFRC Active Register Reload From Shadow Options
00
Load on event counter equals zero
01
Load on event counter equals period
10
Load on event counter equals zero or counter equals period
11
Load immediately (the active register is directly accessed by the CPU and is not loaded from the
shadow register).
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, i.e., 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
00
Does nothing (action disabled)
01
Clear (low)
10
Set (high)
11
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 ( i.e., a forced event is initiated).
1
Initiates a single software forced event
1:0
ACTSFA
Action When One-Time Software Force A Is Invoked
00
Does nothing (action disabled)
01
Clear (low)
10
Set (high)
11
Toggle (Low
→
High, High
→
Low)
Note: This action is not qualified by counter direction (CNT_dir)
Figure 4-12. Action-Qualifier Continuous Software Force Register (AQCSFRC)
15
8
Reserved
R-0
7
4
3
2
1
0
Reserved
CSFB
CSFA
R-0
R/W-0
R/W-0
LEGEND: R/W = Read/Write; R = Read only; -n = value after reset
Registers
102
SPRU791D – November 2004 – Revised October 2007