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两个电路板之间使用SN65LVDT41和SN65LVDT14将SPI转换成差分信号进行spi通信,两个电路之间不共地可以正常通信吗?

Other Parts Discussed in Thread: SN65LVDT41, SN65LVDT14

两个电路板之间使用SN65LVDT41和SN65LVDT14将SPI转换成差分信号进行spi通信,两个电路之间不共地可以正常通信吗?目前使用DC/DC隔离电源后将两个电路板供电系统隔离后,发现通信不正常!