RCCEx Exported Constants

Topics
	RCC Periph Clock Selection
	RCC PLLSAI DIVR
	RCC PLLI2SP Clock Divider
	RCC PLLSAIP Clock Divider
	RCC SAI1 Clock Source
	RCC SAI2 Clock Source
	RCC I2S APB1 Clock Source
	RCC I2S APB2 Clock Source
	RCC FMPI2C1 Clock Source
	RCC CEC Clock Source
	RCC CLK48 Clock Source
	RCC SDIO Clock Source
	RCC SPDIFRX Clock Source
	RCC TIM PRescaler Selection
	RCC LSE Dual Mode Selection
	MCO2 Clock Source

Detailed Description