TIM问题，请求解答啊

lanshh

If the pulse accumulator is disabled (PAEN = 0), the prescaler clock from the timer is always used as an
input clock to the timer counter. The change from one selected clock to the other happens immediately
after these bits are written.   
我想把TIM里面的时钟设置成最小，硬挨怎么弄啊？大家帮帮忙》是不是在PACTL里面的CKL0 和CLK1里面设置？