Hi, I am trying to write to the CCU6_CC60SRH/L registers: CCU6_PAGE = 0x00; // switch to page 0 CCU6_CC60SRL |= 0x00; CCU6_CC60SRH |= 0x60; These registers allows me to change the duty cycle for my PWM signal. Writing with the above sequence does nothing. Using Infineon XC866 micro, Keil u3 toolset.