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请问下BQ76920的充放电管脚CHG和DSG一开始都是0吗?

Other Parts Discussed in Thread: BQ76920

我用BQ76920进行三节电池的管理,电路接通以后,在TS pin施加脉冲激活芯片之后,CHG和DSG管脚为什么总是0,需要配置之后才能进行充放电?还有就是,如果各节电池均为0的极限情况下,因为此芯片的充电管脚CHG一直为0,那我就不能给芯片充电了,这个芯片和电池岂不是都不能用了?进入死循环了。请各位大神帮忙解决一下问题,谢谢!