Generate
interrupt
pulse when
input=1
Clear
Set
TZCLR[INT]
EPWMxTZINT
(Interrupt controller)
Latch
Clear
Set
Clear
Set
Latch
Latch
TZFLG[CBC]
TZFLG[OST]
TZEINT[CBC]
TZCLR[CBC]
CBC
trip event
TZEINT[OST]
OSHT
trip event
TZCLR[OST]
TZFLG[INT]
Latch
cyc−by-cyc
mode
(CBC)
CTR = 0
TZFRC[CBC]
TZ1
Sync
Clear
Set
Set
one-shot
Latch
(OSHT)
mode
Clear
TZSEL[CBC1 to CBCn]
TZCLR[OST]
TZFRC[OSHT]
Sync
Trip
logic
Trip
Trip
CBC
trip event
OSHT
trip event
EPWMxA
EPWMxB
EPWMxA
EPWMxB
TZCTL[TZB]
TZCTL[TZA]
Async Trip
Set
Clear
TZFLG[CBC]
TZCLR[CBC]
Set
Clear
TZFLG[OST]
TZn
TZ1
TZSEL[OSHT1 to OSHTn]
TZn
Enhanced PWM (ePWM) Module
Figure 15-42. Trip-Zone Submodule Mode Control Logic
Figure 15-43. Trip-Zone Submodule Interrupt Logic
1545
SPRUH73H – October 2011 – Revised April 2013
Pulse-Width Modulation Subsystem (PWMSS)
Copyright © 2011–2013, Texas Instruments Incorporated