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TBCNT[15:0]
UP
DOWN
UP
DOWN
UP
DOWN
TBPHS (value)
TBPRD (value)
EPWMxSYNCI
CTR_dir
CTR = zero
CNT_max
CTR = PRD
2.3Counter-Compare(CC)Submodule
CTR = CMPB
CTR = CMPA
CTR_Dir
CTR = 0
CTR = PRD
Dead
Band
(DB)
Counter
Compare
(CC)
Action
Qualifier
(AQ)
EPWMxA
EPWMxB
CTR = CMPB
CTR = 0
EPWMxINT
EPWMxSOCA
EPWMxSOCB
EPWMxA
EPWMxB
TZ1
to TZ6
CTR = CMPA
Time-Base
(TB)
CTR = PRD
CTR = 0
CTR_Dir
EPWMxSYNCI
EPWMxSYNCO
EPWMxTZINT
PWM-
chopper
(PC)
Event
Trigger
and
Interrupt
(ET)
Trip
Zone
(TZ)
GPIO
MUX
ADC
PIE
PIE
Counter-Compare(CC)Submodule
Figure2-10.Time-BaseUp-DownCountWaveforms,TBCTL[PHSDIR=1]CountUpOnSynchronization
Event
Figure2-11illustratesthecounter-comparesubmodulewithintheePWM.
Figure2-11.Counter-CompareSubmodule
Figure2-12showsthebasicstructureofthecounter-comparesubmodule.
32ePWMSubmodulesSPRU791D–November2004–RevisedOctober2007
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