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DS90UB941AS-Q1: I2C通讯问题

Part Number: DS90UB941AS-Q1

你好,我们在调试DS90UB941AS-Q1时,发现I2C接口读回941寄存器值是正确的,但写入到941中的寄存器值,读回后发现没有变化。原理图上REFCLK0和REFCLK1都是悬空,采用的是 DSI Reference Clock Mode,是否需要先输入DSI Clock才能进行941的写寄存器操作?