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DS92LX1622: I2C communication problems

Part Number: DS92LX1622
Other Parts Discussed in Thread: DS92LX1621

Hi,

One of my clients encountered an I2C communication problem when using DS92LX1621/DS92LX1622.

When writing data to remote 1622 through 1621, the first 6 CLKS are normal, and the start bus of the 7th clk cannot be pulled up. What is the possible cause of this phenomenon?

Many thanks~