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BQ78350-R1: Randon NACK when accessing HostFETControl register (0x2b)

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Part Number:BQ78350-R1

Hi,

We have a custom board where the SMBus communication with the BQ78350 works fine except for the HostFETControl register. Sometimes, the device stretches the clock for approx 25ms and the generates a NACK. Sometimes, on a read, it will stretch the clock and then respond with data 0xFFFF and PEC 0xFF.

The first issue seems to be experienced by other users as well, as described here:

Was there any conclusion, or do anyone have an advice why this particular register behaves like this?

Best regards

Emanuel W


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