/* The function is used to Select Low-Voltage Detect Voltage. 
The  */
void SysCtlLVDVolSet(unsigned long ulVoltage)
/* The function is used to Select Low-Voltage Detect Voltage. 
The  */
void SysCtlLVDVolSet(unsigned long ulVoltage)
{
    xASSERT((ulVoltage == SYSCTL_LVD_DET_LOW) ||
            (ulVoltage == SYSCTL_LVD_DET_HIGH));
    xHWREGB(PMC_LVDSC1) &= ~PMC_LVDSC1_LVDV_M;
    xHWREGB(PMC_LVDSC1) |= ulVoltage;
}