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BQ4050: Why Operation Status A (Low) Fuse bit is always set as 1

Part Number: BQ4050

Hi,

I am trying to incorporate the BQ4050 into my new design but have encountered some problems setting the thing up.

I would like to check what causes the Fuse bit in the operation Status A(Low) register to be asserted high other than the Permanent Fails? I have checked the Permanent Fail Register and they all register 0 and i have also replaced the mosfet to ensure that they are working.

As the fuse bit is high, i am unable to turn on or off the fets using the FET_EN or DSG_FET_TOGGLE. However using the evaluation module, the fuse bit is set low i am able to turn the fets on and off.

I have checked that the data memory is the same as the evaluation board but to no avail.

Is there any setup procedures that i need to perform to get the thing working?

I am using the BQ4050 target in the battery management studio instead of the BQ40z50as my IC is BQ4050 

I have attached the image of the Bit Registers of my battery management IC in the post.

Thanks for your time and help.

Best regards,

Louis