14.2.3 I/O Integrity Monitor (IOIM) Overview

The port module includes integrity monitoring circuity, as shown in Figure 14-5, to validate I/O functionality in critical applications by comparing a device output signal against a reference signal. If a mismatch is detected, an event is generated to allow software to take action as needed for the application. A programmable blanking timer is included to account for the feedback path delay. The timer is reset on a change of state in the reference signal. A counter is included to keep track of the number of mismatch events.