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relativestate-的-承担(rsoc)—address0x0b
nominalavailablecapacityregisters(nacl/nach)—address0x0c/0x0d
dischargeratecompensatedavailablecapacityregisters(cacdl/cacdh)—address
temperaturecompensatedcacdregisters(cactl/cacth)—address0x10/0x11
bq27000,bq27200
SLUS556B–SEPTEMBER2004–REVISEDNOVEMBER2004
detectionconditionsmustbemaintainedfor4successiveaveragecurrentmeasurements(20-25s)
toqualifyasavalidtapercurrentdetection.thisbitisclearedto
0
onallresets.
CI
capacityinaccurateflag.一个
1
indicatesthatthefirmwarehasnotbeenthroughavalidlearningcycle
andisbasingallcalculationsoninitialdesignvaluesprogrammedintoEEPROMorthattherehave
beenatleast32cycle-countincrementssincethelastlearningcycle.thisbitisclearedonlyona
lmdupdatefollowingalearningcycle.thisbitissetto
1
onafullreset.thepreviousvalueis
retainedifnoramcorruptionisdetectedafterareset.
CALIP
校准-在-progressflag.thisflagissetwheneveranautomaticorcommandedoffset
calibrationmeasurementisbeingmade.thisbitissetto
0
onallresets.
VDQ
validdischargeflag.一个
1
indicatesthatthebqJUNIORhasmetallnecessaryrequirementsforthe
firmwaretolearnthebatterycapacity.thisbitclearsto
0
onaLMDupdateorconditionthat
disqualifiesalearningcycle.thisbitisclearedto
0
onallresets.
EDV1
firstend-的-释放-voltageflag.一个
1
indicatesthatvoltageontheBATpinislessthanorequal
totheedv1voltageprogrammedineepromandthebatteryhaslessthanorequalto6.25%of
naccapacityremaining.lmdupdatesimmediatelyifthevdqbitissetwhenthisbittransitions
从
0
to1.thisbitisclearedto
0
onallresets.
EDVF
finalend-的-释放-voltageflag.一个
1
indicatesthatthebatteryhasdischargedtotheempty
capacitythreshold.thisbitisclearedto
0
onallresets.
thehostsystemhasread-onlyaccesstothisregister.
rsocreportsthenominalavailablecapacityasapercentageofthelastmeasureddischargevalue(lmd).这
equationis:
rsoc(%)=100*nac/lmd
thehostsystemhasread-onlyaccesstothisregister.
thisregisterpairincrementsduringcharge(v
SRP
>v
SRN
)ifvoltage>edvfthresholdanddecrementsduring
释放(v
SRP
<v
SRN
).thenacregistersareclearedbyaresetiframcorruptionisdetected.theregister
valueisretainedafteraresetiframcorruptionisnotdetected.thehostsystemhasread-onlyaccesstothis
registerpair.nacisreportedinunitsof3.57µvhpercount.
0x0e/0x0f
thisregisterpairreportsavailablecapacityinthebattery,compensatedfordischargerate.thisregisterpair
followsNACduringchargeandisreducedfromNACduringdischargebyanamountcomputedfromAIandthe
dischargeratecompensationvalueprogrammedintoeeprom.cacdisnotallowedtoincreasewhile
discharging,sothatifthedischargeratedecreases,theavailablecapacitydoesnotincrease.cacdequalsnac
ifthechgsbitis1.ifchgsis0,cacdisthesmallerofthepreviousandnewcomputedvalues.thehost
systemhasread-onlyaccesstothisregisterpair.cacdisreportedinunitsof3.57µvhpercount.
thisregisterpairreportsavailablecapacityinthebattery,compensatedforbothdischargerateandtemperature.
ThisregisterpairfollowsCACDduringbothchargeanddischargeunlessthetemperaturehasfallenbelowthe
thresholdprogrammedintoeeprom.oncethetemperaturefallsbelowtheprogrammedthreshold,thecact
valueisreducedfromCACDbyanamountcomputedfromILMDandthetemperaturecompensationconstants
programmedintoeeprom.thisisthebasecapacityvalueusedtocalculatetime-至-emptyandcompensated
状态-的-承担.thehostsystemhasread-onlyaccesstothisregisterpair.cactisreportedinunitsof3.57µvh
percount.
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