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BQ76940: Device_XReady bit

luo neo
Prodigy 210 points
Part Number: BQ76940

Hi TI team

As the spec say, any internal fault will set Device_XReady bit. My concern is whether this bit will be set by the below internal faults, eg

  • ADC convertor stop working,
  • ADC reference voltage unstable,
  • RAM,
  • Register 
  • Clock

  • 0
    TI__Guru 54715 points

    Hi Iuo,

    No, XREADY only checks for communication faults internal.  See figure 10 of the application note https://www.ti.com/lit/pdf/slua775 for internal communication paths.  There may be limited checks of some clocks by default of the normal operation, for example if the clock on the middle group stopped the interface could not respond and XREADY would be set.  The registers will not update in this condition without other indication.