K_SNOTEPowerStudyNDK100/PEJimmy

1.(1)DOCK_PWR19_FVREGIN19VCC3SWPowergenerateprocesswithadapterF10AdapterInDock_PWR19_FU12F14CV19VREGIN19

InputoutputVREGIN19VCC3SWU74VCC3SW因此只要powerVREGIN19supplytoU74,無須控制信號U74產生VCC3SW

DOCK_PWR19_FVREGIN19VCC3SWPowerSequenceCV19U13VINT19WhenDCIN_DRV=H,打開U13andgenerateVINT19VINT19

1.(2)VREGIN19VINT19PowergenerateprocesswithbatteryBatteryinsertF8M-BAT-PWRF12U41/U45VREGIN19VINT19BAT-PWR-17U48

2.PoweronEnablesignalgenerateDOCK_PWR19VINT19whenadapterinsertandU64detectACpowerOK,thengenerateEXTPWR.

EXTPWR信號besenttoQ50產生EXTPWR_PMH.Ofcourse,systemneedPowerVL5來打開Q50.VL5generateprocessasnextpage:EXTPWR_PMHgenerateprocessandPowerSequence

VL5WhenU58detectVINT19OK,產生MAX1977_LCDO5,再通過R189產生VL5VINT19U58MAX1977_LOD5R189Vl5

M1_ONM2_ONAUX_ONEXTPWR_PMHEXTPWR_PMHU72M1_ONM2_ONAUXONControlSignalbesenttoU72,然后產生ControlSignalM1_ON/M2_ON/AUX_ONPWH7

M1_ONM2_ONAUX_ONSequence

PWHControlSignalSequence這里順便了解一下PWHControlSignalSequenceSystemdetectEXTPWROKthengenerateM_ONAUX_ONSystemdetectPWRSTWITCHOKthengenerateA_ONB_ON,也就是說﹕SystemgenerateM_ONAUX_ONbeforepressingpowerbuttonSystemgenerateA_ONB_ONafterpressingpowerbutton

VCC3M_ONVCC5M_ONVCC1R5M_ONVCC1R2AUX_ONVCC3AUX_ON

VCC3MVCC5MOutputVCC3MOutputVCC5MEnableSignal:VCC5M_ONVCC5M_ONVINT19U72Max1977VCC3MVCC5M

VCC3MVCC5MSequence

MPWRGVCC5MVCC3MWhenU74detectVCC3MVCC5MallOK,thenitsendMPWRGBD4175KVTU74VCC3MVCC5MVREGIN19MPWRG

MPWRGSequence

MPWRGSignalAND5M_ON3M_ONVCC3MVCC5MM_PGSgeneratehighsignalwhenthefollowingconditionaresatisfied.(1)VCC3M_ONVCC5M_ONHigh(2)VCC5MVoltageSPEC:4.311V~4.461VVCC3MVoltageSPEC:2.793V~2.943Vshutdownwhenthefollowingconditionaresatisfied(3)VCC5M4.311VorVCC5M4.461V,M_PGSshutdow