Tool/software: Code Composer Studio
Hello,
I am giving an input to ADC, which is 100 khz pulse signal of amplitude 3 volt and the leading edge of signal is of 100 ns (as shown in fig). I am trying to generate a pulse of approx 20 to 60 nanosecond by toggling a GPIO Pin in ISR of the ADC PPB limit detection block. I know it will give me some delay, but I am okay with it unless its alot. By changing the high and low limit, I have tried to modify ADC_PPB example (such as setting low and high limit) and added one GPIO to toggle, but minimum pulse i could get was of 500 nanosecond. The sampling frequency of ADC, is given through a epwm signal of maximum possible value, i could get was of 2.5Mhz. I am having doubt, whether is it possible to generate such low pulse width signal by toggling GPIO or not. If yes, then could you please suggest me the way ? I am keen to know the delay offered by PPB ISR and the time at which PPB ISR is called. My ADC clock at 50 Mhz. I am attaching the image explaining my application.
