I need to genertae pwm signal 4 mhz using nrf54l15 .

[Sharon123]

I need to generate PWM siganl around 4 mhz frequency but i did not get proper pwm signal and i got only millivolt range voltage   this issue cuase i did not get proper audio , my bclk is 256khz mclk 8khz , actually mclk us issue like above , I have doubt in here it is when i configure 4 mhz we didnt get proper pwm shape why ?? I am change 1 mhz that time good pwm shape is got

[Sigurd]

You are on the limit on how fast the GPIO can be toggled. Therefore you will get that kind of sinus signal.