RCC_MCO2SOURCE_HSE: HSE clock
selected as MCO2 source
RCC_MCO2SOURCE_PLLCLK: main PLL
clock selected as MCO2 source
__MCODIV__: specifies the MCO clock prescaler.
This parameter can be one of the following values:
RCC_MCODIV_1: no division applied to MCOx
clock
RCC_MCODIV_2: division by 2 applied to
MCOx clock
RCC_MCODIV_3: division by 3 applied to
MCOx clock
RCC_MCODIV_4: division by 4 applied to
MCOx clock
RCC_MCODIV_5: division by 5 applied to
MCOx clock