BQ2083-V1P3 Datasheet, PDF (32/56 Pages) Texas Instruments – SBS-COMPLIANT GAS GAUGE IC FOR USE WITH THE bq29311

bq2083-V1P3
SLVS508 − OCTOBER 2003
www.ti.com
BatteryStatus( ) (0x16)
Description: Returns the bq2083−V1P3 status word (flags). Some of the BatteryStatus( ) flags
(REMAINING_CAPACITY_ALARM and REMAINING_TIME_ALARM) are calculated on the basis of either
current or power depending on the setting of the BatteryMode( ) CAPACITY_MODE bit. This is important because
use of the wrong calculation mode may result in an inaccurate alarm.
Purpose: The BatteryStatus( ) function is used by the power-management system to get alarm and status bits,
as well as error codes from the bq2083−V1P3. This is basically the same information broadcast to both the SMBus
host and the smart battery charger by the AlarmWarning( ) function except that the AlarmWarning( ) function sets
the error code bits all high before sending the data.
SMBus protocol: Read word
Output: Unsigned Integer-Status Register with Alarm Conditions Bit Mapped as follows:
ALARM BITS
0x8000 OVER_CHARGED_ALARM
0x4000 TERMINATE_CHARGE_ALARM
0x2000 Reserved
0x1000 OVER_TEMP_ALARM
0x0800 TERMINATE_DISCHARGE_ALARM
0x0400 Reserved
0x0200 REMAINING_CAPACITY_ALARM
0x0100 REMAINING_TIME_ALARM
STATUS BITS
0x0080 Initialized
0x0040 DISCHARGING
0x0020 FULLY_CHARGED
0x0010 FULLY_DISCHARGED
ERROR CODES
0x0007 Unknown Error
0x0006 BadSize
0x0005 Overflow/Underflow
0x0004 AccessDenied
0x0003 UnsupportedCommand
0x0002 ReservedCommand
0x0001 Busy
0x0000 OK
Alarm Bits
OVER_CHARGED_ALARM bit is set whenever the bq2083−V1P3 detects that the battery is being charged
beyond the maximum overcharge limit. This bit is cleared when the bq2083−V1P3 detects that the battery is no
longer being charged and there are 2 mAh of continuous discharge (i.e., the bq2083−V1P3 detects discharge
activity or no activity above the digital filter).
TERMINATE_CHARGE_ALARM bit is set when the bq2083−V1P3 detects that one or more of the battery
charging parameters are out of range (e.g., its voltage, current, or temperature is too high) or when the
bq2083−V1P3 detects a primary charge termination. This bit is cleared when the parameter falls back into the
allowable range, the termination condition ceases, or when the bq2083−V1P3 detects that the battery is no longer
being charged.
OVER_TEMP_ALARM bit is set when the bq2083−V1P3 detects that the internal battery temperature is greater
than or equal to the Max Temperature threshold. This bit is cleared when the internal temperature falls back into
the acceptable range.
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