关于2140掉电模式(power_off)

我想让2410进入掉电模式,然后通过中断唤醒,在2410datasheet上有这么一段:<br />&quot;In&nbsp;Power_OFF&nbsp;mode,&nbsp;only&nbsp;VDDi&nbsp;and&nbsp;VDDiarm&nbsp;will&nbsp;be&nbsp;turned&nbsp;off,&nbsp;which&nbsp;is&nbsp;controlled&nbsp;by&nbsp;PWREN&nbsp;pin.<br />If&nbsp;PWREN&nbsp;signal&nbsp;is&nbsp;active(H),&nbsp;VDDi&nbsp;and&nbsp;VDDiarm&nbsp;are&nbsp;supplied&nbsp;by&nbsp;an&nbsp;external&nbsp;voltage&nbsp;regulator.&nbsp;If&nbsp;PWREN&nbsp;pin&nbsp;is<br />inactive&nbsp;(L),&nbsp;the&nbsp;VDDi&nbsp;and&nbsp;VDDiarm&nbsp;are&nbsp;turned&nbsp;off.&quot;<br /><br />还有这么一句:<br />&quot;PWREN&nbsp;O&nbsp;2.0V&nbsp;core&nbsp;power&nbsp;on-off&nbsp;control&nbsp;signal&quot;--ver:1.0<br />&quot;PWREN&nbsp;O&nbsp;1.8V&nbsp;core&nbsp;power&nbsp;on-off&nbsp;control&nbsp;signal&quot;--ver:1.2<br /><br />第一段是说:PWREN的高低可以控制2410的掉电模式;<br />第二段是说:PWREN的控制给内核供电的电压是1.8v还是2.0v;<br /><br />所以不明白在硬件上PEREN到底该怎么连了?<br /><br />请知道的指教一下!谢谢!