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BQ76952: Calibration:Current Deadband - TRM

Part Number: BQ76952

Regarding TRM Manual my Customer would like to apply 255 value to avoid the necessary current accumulation, but it doesn't seem to be what I expected.
Since the shunt resistor is 0.001 Ω, my calculation is that if Calibration:current Deadband is set to 255, the range of +/-59.67 mA is not added.
However, when we look at the operation of the communication, it seems that we can only limit it to +/-30mA, approximately.
It is done in config update mode when it is configured and out of config update mode when the configuration is complete.
It is also in normal mode during operation. Are there any other factors or settings that need to be considered?

https://www.ti.com/lit/ug/sluuby2a/sluuby2a.pdf