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DS90UB964 I2C不能正常通信

Ti工程师,

        打扰了, 开发环境 sensor + 4X913+ ds90ub964 + MCU,

上电,964 PDB引脚1.62V, IDX引脚1.72V,根据数据手册Addres 为0x3d,  但是MCU 与 ti1005 I2C不能通信,有什么可能的原因导致不能正常通信呢

还有 MCU单独接964不连接913,I2C能正常通信吗,谢谢