polling timer要怎么翻译才好啊？这个是一个无线芯片DATASHEET上面的。
附原文：
Turns off (1) or on (0) low-current internal 32KHz oscillator for polling timer functions. This oscillator is default ON (0) on startup, and should be disabled (1) if not used. At startup, the 32KHz signal can be observed on GPO2.
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