Texas Instruments TMS320x28xx Network Router User Manual


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Action-QualifierSubmoduleRegisters
Figure4-10.Action-QualifierOutputBControlRegister(AQCTLB)
1512111098
ReservedCBDCBU
R-0R/W-0R/W-0
76543210
CADCAUPRDZRO
R/W-0R/W-0R/W-0R/W-0
LEGEND:R/W=Read/Write;R=Readonly;-n=valueafterreset
Table4-10.Action-QualifierOutputBControlRegister(AQCTLB)FieldDescriptions
BitsNameValueDescription
15-12Reserved
11-10CBDActionwhenthecounterequalstheactiveCMPBregisterandthecounterisdecrementing.
00Donothing(actiondisabled)
01Clear:forceEPWMxBoutputlow.
10Set:forceEPWMxBoutputhigh.
11ToggleEPWMxBoutput:lowoutputsignalwillbeforcedhigh,andahighsignalwillbeforcedlow.
9-8CBUActionwhenthecounterequalstheactiveCMPBregisterandthecounterisincrementing.
00Donothing(actiondisabled)
01Clear:forceEPWMxBoutputlow.
10Set:forceEPWMxBoutputhigh.
11ToggleEPWMxBoutput:lowoutputsignalwillbeforcedhigh,andahighsignalwillbeforcedlow.
7-6CADActionwhenthecounterequalstheactiveCMPAregisterandthecounterisdecrementing.
00Donothing(actiondisabled)
01Clear:forceEPWMxBoutputlow.
10Set:forceEPWMxBoutputhigh.
11ToggleEPWMxBoutput:lowoutputsignalwillbeforcedhigh,andahighsignalwillbeforcedlow.
5-4CAUActionwhenthecounterequalstheactiveCMPAregisterandthecounterisincrementing.
00Donothing(actiondisabled)
01Clear:forceEPWMxBoutputlow.
10Set:forceEPWMxBoutputhigh.
11ToggleEPWMxBoutput:lowoutputsignalwillbeforcedhigh,andahighsignalwillbeforcedlow.
3-2PRDActionwhenthecounterequalstheperiod.
Note:Bydefinition,incountup-downmodewhenthecounterequalsperiodthedirectionisdefined
as0orcountingdown.
00Donothing(actiondisabled)
01Clear:forceEPWMxBoutputlow.
10Set:forceEPWMxBoutputhigh.
11ToggleEPWMxBoutput:lowoutputsignalwillbeforcedhigh,andahighsignalwillbeforcedlow.
1-0ZROActionwhencounterequalszero.
Note:Bydefinition,incountup-downmodewhenthecounterequals0thedirectionisdefinedas1
orcountingup.
00Donothing(actiondisabled)
01Clear:forceEPWMxBoutputlow.
10Set:forceEPWMxBoutputhigh.
11ToggleEPWMxBoutput:lowoutputsignalwillbeforcedhigh,andahighsignalwillbeforcedlow.
SPRU791D–November2004–RevisedOctober2007Registers101
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