There are six Comparator blocks enabling simultaneous comparison of multiple pairs of analog inputs, resulting in six digital comparison outputs. The external analog inputs that are being compared in the comparators come from AIO_MUX1 and AIO_MUX2 blocks. These analog inputs can be compared against each other or the outputs of 10-bit DACs (Digital-to-Analog Converters) inside individual Comparator modules. The six comparator outputs go to the GPIO_MUX2 block where they can be mapped to six out of eight available pins.
To use these comparator outputs to trip the C28x EPWMA/B outputs, they must be first routed externally from pins of the GPIO_MUX2 block to selected pins of the GPIO_MUX1 block before they can be assigned to selected 12 ePWM Trip Inputs.
See Section 5.10.2 for more information on the analog comparator + DAC.