DS90UB947-Q1: DS90UB947-Q1 I2C address not found

Kexiang Fu

Part Number: DS90UB947-Q1
Other Parts Discussed in Thread: PCA9539

Tool/software:

Have DS90UB947-Q1 placed on one I2C bus with several devices. It's able to find all I2C devices （e.g. PCA9539） except DS90UB947.

I2C baud rate is 200K. Does anyone have the similar problem?

Thanks.

0 Cameron Hoholik-Carlson over 1 year ago

Hi Kexiang,

Could you send over a diagram of the system you're using as well as with any devices that are connected to the I2C network?

Best,

Cameron C.

0 Kexiang Fu over 1 year ago

Hi Cameron,

This issue was resolved after hardware team made the change of VDDIO from 3V3 to 1V8 on UB947 side.

Thanks.

Kexiang

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