Datasheet

EPWM2SYNCI

ePWM2

EPWM2SYNCO

EPWM1SYNCO

ePWM1

EPWM1SYNCI

GPIO

MUX

EPWM3SYNCO

ePWM3

EPWM3SYNCI

ePWMx

EPWMxSYNCI

SYNCI

eCAP1

EPWMxSYNCO

www.ti.com

ePWM Submodules

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.

34.2.2.3.3 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 34-6.

Figure 34-6. Time-Base Counter Synchronization Scheme

1723

SPNU562–May 2014 Enhanced Pulse Width Modulator (ePWM) Module

Submit Documentation Feedback