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TPS65400EVM-678: i2c connection

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Part Number:TPS65400EVM-678

we have got one evm board, we were not able to communicate with it using USBANY EXPLORER although we followed the user manual.

I have starting developing the FW to communicate with I2C. I am getting acknowledge when writing and reading but the info returning when trying to read ADh command( DEVICE ID) I am getting 0xff for each byte instead of the device model characters.

I have connected scl, sda lines to J13 pin 19,20 ( same order ) and also gnd to pin 27.

Do I need to do other procedures on the board for it to work ? 

Am I doing something wrong or is it a malfunctioning board ?

attaching logic analyzer capture:


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