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DS90UB947-Q1: Can't find I2C address

Part Number: DS90UB947-Q1

Hi Team,

Customer can't find 947 I2C address. Could you kindly give some advice?

DS90UB947-Q1: I2C NACK and could found I2C signal in I2C bus.

• DS90UB947-Q1: I2C access is NACK
• 1. The theoretical design value of 947's I2C address is 0x1A, but this address is NACK when reading and writing.
• 2. The measured 947_IDX pin power supply is 1.79V. After trying other addresses (Serial Control Bus Addresses For IDx), all are NACK.
• 3. Measured the voltage of 947 at all voltage levels and PDB and found no abnormality.