BQ77PL900 Datasheet, PDF (41/57 Pages) Texas Instruments – Five to Ten Series Cell Lithium-Ion or Lithium-Polymer Battery Protector and Analog Front End

bq77PL900
www.ti.com ...................................................................................................................................................................................................... SLUS844 – JUNE 2008
Register Control
0x01 to 0x05 should be controlled during host-control mode.
STATUS: Status Register
7
CHG
STATUS REGISTER (0x00)
6
5
4
3
2
DSG
VGOOD
OVTEMP
UV
OV
1
OCD
0
SCD
The STATUS register provides information about the current state of the bq77PL900.
STATUS b0 (SCD): This bit indicates a short-circuit in discharge condition.
0 = Current is below the short-circuit in discharge threshold (default).
1 = Current is greater than or equal to the short-circuit in discharge threshold.
STATUS b1 (OCD): This bit indicates an overload condition.
0 = Current is less than or equal to the overload threshold (default).
1 = Current is greater than the overload threshold.
STATUS b2 (OV): This bit indicates an overvoltage condition.
0 = Voltage is less than or equal to the overvoltage threshold (default).
1 = Voltage is greater than the overvoltage threshold.
STATUS b3 (UV): This bit indicates an undervoltage condition.
0 = Voltage is greater than or equal to the undervoltage threshold (default).
1 = Voltage is less than the undervoltage threshold.
STATUS b4 (OVTEMP): This bit indicates an overtemperature condition.
0 = Temperature is lower than or equal to the overtemperature threshold (default).
1 = Temperature is higher than the overtemperature threshold.
STATUS b5 (VGOOD): This bit indicates a valid EEPROM power-supply voltage condition.
0 = Voltage is smaller than specified EEPROM power-supply voltage (default).
1 = Voltage is greater than or equal to the specified EEPROM power-supply voltage.
STATUS b6 (DSG): This bit reports the external discharge FET state.
0 = Discharge FET is off.
1 = Discharge FET is on.
STATUS b7 (CHG): This bit reports the external charge FET state.
0 = Charge FET is off.
1 = Charge FET is on.
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