MSP430F5529: 库函数配置定时器 中timerClear的两个成员是什么意思？

Part Number: MSP430F5529

//! Decides if Timer_A clock divider, count direction, count need to be
//! reset.
//! \n Valid values are:
//! - \b TIMER_A_DO_CLEAR
//! - \b TIMER_A_SKIP_CLEAR [Default]
uint16_t timerClear;