TBCNT
Time
Base
(TB)
Module
16
CMPA
16
16
16
CMPA
Compare A Active Reg.
CTR = CMPA
CTR = CMPB
Action
Qualifier
Module
Digital
comparator B
CMPB
TBCNT
CTR = PRD
CTR =0
CMPCTL[LOADAMODE]
Shadow
load
CTR = PRD
CTR = 0
CMPCTL[LOADBMODE]
CMPCTL[SHDWBFULL]
CMPCTL[SHDWBMODE]
CMPCTL
[SHDWAFULL]
CMPCTL
[SHDWAMODE]
CMPA
Compare A Shadow Reg.
Digital
comparator A
CMPB
Compare B Active Reg.
CMPB
Compare B Shadow Reg.
Shadow
load
(AQ)
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
EPWMxA
EPWMxB
TZ1 to TZn
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
Interrupt
controller
Interrupt
controller
Enhanced PWM (ePWM) Module
15.2.2.4 Counter-Compare (CC) Submodule
illustrates the counter-compare submodule within the ePWM.
shows the basic
structure of the counter-compare submodule.
Figure 15-17. Counter-Compare Submodule
Figure 15-18. Counter-Compare Submodule Signals and Registers
1511
SPRUH73H – October 2011 – Revised April 2013
Pulse-Width Modulation Subsystem (PWMSS)
Copyright © 2011–2013, Texas Instruments Incorporated