MSP430F5438A: MSP430F5438A

void Init_CLK(void)
{
    WDTCTL = WDTPW + WDTHOLD ; 
    //Init_Power(); //5438A需要单独设置电源项
    PMM_setVCore(PMMCOREV_3);
    //SVS Low side is turned off
    PMM_enableSvsL();   //Vcore低边 
    //Monitor low side is turned off
    PMM_enableSvmL();  //VCC低边
    //Monitor high side is turned off
    PMM_enableSvmH(); //VCC高边
    //SVS High side is turned off
    PMM_enableSvsH(); //Vcore高边

    //Enable POR on SVS Event
    PMM_enableSvsHReset();	 //低边复位
	PMM_enableSvsLReset();	

	PMM_enableSvmLInterrupt(); //高边中断
	PMM_enableSvmHInterrupt();

    //例程设置时钟
    //Port select XT1
    GPIO_setAsPeripheralModuleFunctionInputPin(
        GPIO_PORT_P7,
        GPIO_PIN0 + GPIO_PIN1
        );    
    //Initialize XT1. Returns STATUS_SUCCESS if initializes successfully
    UCS_turnOnLFXT1WithTimeout(
        UCS_XT1_DRIVE_0,
        UCS_XCAP_3,
        50000
        );    
    
    //Select XT1 as ACLK source
    UCS_initClockSignal(
        UCS_ACLK,
        UCS_XT1CLK_SELECT,
        UCS_CLOCK_DIVIDER_1
        );    
	
    //Set DCO FLL reference = ACLK
    UCS_initClockSignal(
        UCS_FLLREF,
        UCS_XT1CLK_SELECT,
        UCS_CLOCK_DIVIDER_1
        );   	
    //Set Ratio and Desired MCLK Frequency  and initialize DCO
    UCS_initFLLSettle(
        18022,
        FLL_FACTOR
        );    
}