SPRUJ79 November 2024 F29H850TU , F29H859TU-Q1
Figure 30-74 illustrates where the digital compare (DC) submodule signals interface to other submodules in the ePWM system.
The eCAP input signals are sourced from the Input X-BAR signals as shown in Figure 30-75.
On this device, any of the GPIO pins can be flexibly mapped to be the trip-zone input and trip inputs to the trip-zone submodule and digital compare submodule. The Input X-BAR Input Select (INPUTxSELECT) register defines which GPIO pins gets assigned to be the trip-zone inputs / trip inputs.
The digital compare (DC) submodule compares signals external to the ePWM module (for instance, CMPSSx signals from the analog comparators) to directly generate PWM events/actions which then feed to the event-trigger, trip-zone, and time-base submodules. Additionally, blanking window functionality is supported to filter noise or unwanted pulses from the DC event signals.
Figure 30-75 GPIO MUX-to-Trip Input
Connectivity