BQ2084-V133 Datasheet, PDF (55/64 Pages) Texas Instruments – SBS v1.1-COMPLIANT GAS GAUGE FOR USE WITH THE bq29312

bq2084-V133
www.ti.com
SLUS640A – JUNE 2005 – REVISED JUNE 2005
1 bq2084-V133 uses its internal temperature sensor.
AFEDET
The AFEDET bit programs the bq2084-V133 to look for errors with I²C communications and the AFE and
enables the detection of the AFE permanent failure if bit 3 of PF Config 0x11f is set.
0 Does not verify AFE communications.
1 Does verify AFE communications.
DS
The DS bit programs the bq2084-V133 to enter sleep mode on SMBus inactivity.
0 bq2084-V133 enters sleep mode when the SMBus is low for 2 s.
1 bq2084-V133 does not enter sleep mode.
OT
The OT bit programs the bq2084-V133 to turn off the discharge FET when the bq2084-V133 detects an
overtemperature condition. Charge FET is always turned off in overtemperature conditions.
0 bq2084-V133 does not turn off the discharge FET on overtemperature.
1 bq2084-V133 turns off the discharge FET on overtemperature.
ECLED
The ECLED bit programs the LED activity during charging (DSG bit = 0).
0 The LEDs are not enabled during charging.
1 The LEDs are enabled during charging.
VOD
The VOD bit enables a 1-s time delay in the setting of the CVOV and CVUV bits in PackStatus.
0 No delay
1 1-s delay
Misc Configuration (DF 0x2b, low)
b7
LEDRCA
b6
PFET1
b5
PFET0
b4
b3
b2
NR
CHGFET
0
b1
b0
0
0
LEDRCA
The LEDRCA bit programs the LED to blink when there is a RemainingCapacityAlarm.
0 The LEDs blink when there is a RemainingCapacityAlarm.
1 The LEDs are off when there is a RemainingCapacityAlarm.
PFET1, PFET0
The PFETx bits define the precharge FET operation. See the bq29312 data sheet for more detail.
0,0 The bq29312 ZVCHG FET is turned on for precharge. Assumes charger has precharge function.
0,1 The charge FET is turned on for precharge. Assumes charger has precharge function.
1,0 The bq29312 OD FET is turned on for precharge. Assumes charger does not have precharge function.
1,1 Not defined, unpredictable operation
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