I'm trying to understand the interrupt functions, capabilities and timing of the F28004x uC. I'm using the "interrupt_ex1_external" example project to do this. In my efforts to understand what is going on in the program, I fail to understand what the GPIO_setQualificationPeriod() function is for. At first it looks like some sort of de-bounce type of function. I read the function description. The divider parameter description says it's the output drive strength but then it says it's the value by which the frequency of the SYSCLKOUT is divided, which sounds like it's a time delay parameter. Please clarify. What does the function do to the GPIO pins?