Event-Trigger Submodule; Trigxsel Trigger Options - Texas Instruments Concerto F28M35 Series Technical Reference Manual

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Operational Overview of the ePWM type 2 Event-Trigger Submodule

The following sections describe the event-trigger submodule's operational highlights.

Each ePWM module has one interrupt request line connected to the PIE and two start of conversion

signals connected to the ADC module. As shown in

modules are connected to individual ADC trigger inputs to the ADC via the Analog Common Interface Bus

(ACIB) and hence multiple modules can initiate an ADC start of conversion via the ADC trigger inputs. The

configuration options for the TRIGxSEL register is shown in the below table.The trigger source for an ADC

start of conversion is configured by a combination of the TRIGSEL field in the ADCSOCxCTL register, the

appropriate bits in the ADCINTSOCSEL1 or ADCINTSOCSEL2 register, and setting the correct bits in the

TRIGxSEL registers.

TRIGxSEL Bits

SPRUH22I – April 2012 – Revised November 2019

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Figure 7-41. Event-Trigger Submodule

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Table 7-22. TRIGxSEL Trigger Options

No Trigger Enabled (Default)

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7-42, ADC start of conversion for all ePWM

Trigger Source

C28 Enhanced Pulse Width Modulator (ePWM) Module

ePWM Submodules

C28 GPIO MUX

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