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Texas Instruments TMS570LC4357

Texas Instruments TMS570LC4357
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EPWM2SYNCI
ePWM2
EPWM2SYNCO
EPWM1SYNCO
ePWM1
EPWM1SYNCI
GPIO
MUX
EPWM3SYNCO
ePWM3
EPWM3SYNCI
ePWMx
EPWMxSYNCI
SYNCI
eCAP1
EPWMxSYNCO
ePWM Submodules
www.ti.com
2006
SPNU563AMarch 2018
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Copyright © 2018, Texas Instruments Incorporated
Enhanced Pulse Width Modulator (ePWM) Module
The proper procedure for enabling ePWM clocks is as follows:
1. Enable ePWM module clocks using the IOMM control registers for each ePWM module instance
2. Set TBCLKSYNC = 0. This will stop the time-base clock within any enabled ePWM module.
3. Configure ePWM modules: prescaler values and ePWM modes.
4. Set TBCLKSYNC = 1.
35.2.2.3.3 Time-Base Counter Synchronization
A time-base synchronization scheme connects all of the ePWM modules on a device. Each ePWM
module has a synchronization input (EPWMxSYNCI) and a synchronization output (EPWMxSYNCO). The
input synchronization for the first instance (ePWM1) comes from an external pin. The synchronization
connections for the remaining ePWM modules are shown in Figure 35-6.
Figure 35-6. Time-Base Counter Synchronization Scheme

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