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您好,
同一塊PCBA有的IC可以導通SPI信號,有的則無法輸出波形
您的意思是说只要这个IC是正常的,每一路都是正常的?不正常的话,每一路都不正常?
另外,您的IC是同一批次的吗?购货渠道是什么,最终进货来源 是TI store 吗?