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BQ24090: CHG pin logic

Part Number: BQ24090


As for CHG pin, according to the specification, CHGpin is high level when it is not charged or fully charged, and low level when it is charged. But in fact, when the above NTC voltage is abnormal, CHG PIN outputs high level, is this logic wrong? (It should be in low level state during charging)

any advise ?thanks in advace