Forum Post: Toggle frequency on GPIO TMS320F28335

Hi,

I've configured SYSCLKOUT of TMS320F28335 at 150MHz. I've tried to toggle a GPIO but, to my surprise, it only toggles at 4MHz (4,17 MHz i've measured)

I know that SYSCLKOUT is correctly configured because i have interruptions and PWMs running at the correct frequency.

Why is there so much difference between SYSCLKOUT frequency and the toggling frequency?

Thank you.