Each CMPSS includes:
- Two analog comparators
- Two independently programmable
reference 12-bit DACs
- One decrementing ramp generator
- Two digital filters, max filter
clock prescale = 216
- Ability to synchronize submodules with EPWMSYNCPER
- Ability to extend clear signal with EPWMBLANK
- Ability to synchronize output with SYSCLK
- Ability to latch output
- Ability to invert output
- Option to use hysteresis on the input
- Option for negative input of comparator to be driven by an external signal or by the reference DAC for COMPH
- VDACREF is the DAC reference voltage
- Diode emulation support
- The system works with EPWM to support the Diode emulation feature
- Details about Diode emulation can be found in ePWM Modules Overview
- Ramp generator prescaler
CMPSSA has the above features, and the
additional support of INH and INL as a muxable input for the COMPL positive signal.
Figure 7-114 and Figure 7-115 show the differences.