BQ2063_15 Datasheet, PDF (27/60 Pages) Texas Instruments – SBS v1.1-COMPLIANT Li-ION GAS-GAUGE IC

Not Recommended For New Designs
bq2063
SBS v1.1ĆCOMPLIANT LiĆION GASĆGAUGE IC
WITH PROTECTOR INTERFACE
SLUS468E− MAY 2001 − REVISED APRIL 2002
command codes (continued)
ALARM_MODE bit is set to disable the bq2063’s ability to master the SMBus and send AlarmWarning( )
messages to the SMBus Host and the Smart Battery Charger. When set, the bq2063 does not master the
SMBus, and AlarmWarning( ) messages are not sent to the SMBus Host and the Smart Battery Charger for a
period of no more than 65 seconds and no less than 45 seconds. When cleared (default), the Smart Battery
sends the AlarmWarning( ) messages to the SMBus Host and the Smart Battery Charger any time an alarm
condition is detected.
D The bq2063 polls the ALARM_MODE bit at least every 150 ms. Whenever the ALARM_MODE bit is set,
the bq2063 resets the bit and starts or restarts a 55 seconds (nominal) timer. After the timer expires, the
bq2063 automatically enables alarm broadcasts to ensure that the accidental deactivation of broadcasts
does not persist. An SMBus host that does not want the bq2063 to be a master on the SMBus must therefore
continually set this bit at least once per 50 seconds to keep the bq2063 from broadcasting alarms.
D The ALARM_MODE bit defaults to a cleared state within 130 ms after the bq2063 detects the SMBus
Off-State.
D The condition of the ALARM-MODE bit does not affect the operation or state of the CHARGER_MODE bit
which is used to prevent broadcasts of ChargingCurrent( ) and ChargingVoltage( ) to the Smart Battery
Charger.
CHARGER_MODE bit enables or disables the bq2063’s transmission of ChargingCurrent( ) and
ChargingVoltage( ) messages to the Smart Battery Charger. When set, the bq2063 does not transmit
ChargingCurrent( ) and ChargingVoltage( ) values to the Smart Battery Charger. When cleared, the bq2063
transmits the ChargingCurrent( ) and ChargingVoltage( ) values to the Smart Battery Charger. The
CHARGER_MODE bit defaults to a cleared state within 130 ms after the bq2063 detects the SMBus Off-State.
CAPACITY_MODE bit indicates if capacity information is reported in mA/mAh or 10mW/10 mWh. When set,
the bq2063 reports capacity information in 10 mW/10 mWh as appropriate. When cleared, the bq2063 reports
capacity information in mA/mAh as appropriate. The CAPACITY_MODE bit defaults to a cleared state within
130 ms after the bq2063 detects the SMBus Off-State.
The following functions are changed to accept or return values in mA/mAh or 10 mW/10 mWh depending on
the CAPACITY_MODE bit:
D RemainingCapacityAlarm( )
D AtRate( )
D RemainingCapacity( )
D FullChargeCapacity( )
D DesignCapacity( )
The following functions are calculated on the basis of capacity and may be calculated differently depending on
the CAPACITY_MODE bit:
D AtRateOK( )
D AtRateTimeToEmpty( )
D AtRateTimeToFull( )
D RunTimeToEmpty( )
D AverageTimeToEmpty( )
D AverageTimeToFull( )
D Remaining Time Alarm( )
D BatteryStatus( )
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