The enhanced CAPture (eCAP) module provides input capture functionality for systems where accurate timing of external events is important. The eCAP module features include speed measurements of rotating machinery (for example, toothed sprockets sensed via Hall sensors), elapsed time measurements between position sensor pulses, period and duty cycle measurements of pulse train signals and decoding current or voltage amplitude derived from duty cycle encoded current/voltage sensors.

The following tests can be applied as diagnostics for this module (to provide diagnostic coverage on a specific function):

• Software Test of Function Including Error Tests
• Information Redundancy Techniques
• Monitoring of ePWM by eCAP
• Periodic Software Read Back of Static Configuration Registers
• Software Read Back of Written Configuration
• eCAP Application Level Safety Mechanism
• Hardware Redundancy