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2.2.3.2 Time-Base Counter Synchronization
EPWM2SYNCI
ePWM2
EPWM2SYNCO
EPWM1SYNCO
ePWM1
EPWM1SYNCI
GPIO
MUX
EPWM3SYNCO
ePWM3
EPWM3SYNCI
ePWMx
EPWMxSYNCI
SYNCI
eCAP1
EPWMxSYNCO
Time-Base (TB) Submodule
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 possible
synchronization connections for the remaining ePWM modules are shown in Figure 2-4 , Figure 2-5 , and
Figure 2-6 .
Scheme 1 shown in Figure 2-4 applies to the 280x and 2801x devices. Scheme 1 also applies to the
2804x devices when the ePWM pinout is configured for 280x compatible mode (GPAMCFG[EPWMMODE]
= 0).
Figure 2-4. Time-Base Counter Synchronization Scheme 1
SPRU791D – November 2004 – Revised October 2007 ePWM Submodules 27
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