BQ40Z50-R1: query about SLUA734A

Hi 

I follow the application bq40zxx Manufacture, Production, and Calibration.

I have some query about 2.4 Current Calibration

how to do this  two steps

4. Poll ManufacturerData() until ZZ increments by 2 before reading data.

5. Obtain the ADC conversion readings of current from ManufacturerData(): • ADCCC = AAaa of ManufacturerData() Is ADCCC < 0x8000? If yes, use ADCCC; otherwise, ADCCC = –(0xFFFF – AAaa + 0x0001).

Thanks

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