SM320F28335PTPMEP Datasheet, PDF (63/167 Pages) Texas Instruments – Digital Signal Controller (DSC)

SM320F28335-EP
www.ti.com
SPRS581D – JUNE 2009 – REVISED MAY 2012
Time−base (TB)
TBPRD shadow (16)
TBPRD active (16)
CTR=PRD
TBCTL[CNTLDE]
Counter
up/down
(16 bit)
TBCNT
active (16)
CTR=ZERO
CTR_Dir
16
TBPHSHR (8)
8
TBPHS active (24)
Phase
control
Counter compare (CC)
CTR=CMPA
CMPAHR (8)
16
8
CMPA active (24)
CMPA shadow (24)
Action
qualifier
(AQ)
EPWMA
CTR=ZERO
CTR=CMPB
Disabled
Sync
in/out
select
Mux
TBCTL[SYNCOSEL]
TBCTL[SWFSYNC]
(software forced sync)
CTR = PRD
CTR = ZERO
CTR = CMPA
CTR = CMPB
CTR_Dir
Event
trigger
and
interrupt
(ET)
HiRes PWM (HRPWM)
EPWMxSYNCO
EPWMxSYNCI
EPWMxINT
EPWMxSOCA
EPWMxSOCB
EPWMxAO
CTR=CMPB
16
CMPB active (16)
CMPB shadow (16)
EPWMB
Dead
band
(DB)
PWM
chopper
(PC)
CTR = ZERO
Trip
zone
(TZ)
EPWMxBO
EPWMxTZINT
TZ1 to TZ6
Figure 4-5. ePWM Submodules Showing Critical Internal Signal Interconnections
4.4 High-Resolution PWM (HRPWM)
The HRPWM module offers PWM resolution (time granularity) which is significantly better than what can be achieved using conventionally derived
digital PWM methods. The key points for the HRPWM module are:
• Significantly extends the time resolution capabilities of conventionally derived digital PWM
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Peripherals
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