ADC 6021 Dokumentacja Pobierz pdf (Strona 75)

MYXPM6021*

Revision 1.1 - 10/21/14

*Advanced information. Subject to change without notice.

MYXPM6021*

Form #: CSI-D-685 Document 011

the full 100ms de-bounce time beforethe SVBUSDET bitin the SPWRSRCIRQ register is cleared,indicating charger

disconnection.IfVBUSDBENiscleared,SVBUSDETisclearedimmediatelyuponVBUSbecominginvalid.

On any change in the SVBUSDET bit in the SPWRSRCIRQ register (set or clear), the corresponding interrupt ag,

VBUSDET,issetinthePWRSRCIRQ2nd-levelinterruptregister.ThisautomaticallysetsthePWRSRCinterruptaginthe

IRQLVL1interruptregister,andalertstheSOC.TheSOCisexpectedtoquerytheSVBUSDETbitinSPWRSRCIRQto

determineiftheeventwasaconnectionordisconnection.

Table 47: VBUS Detection, Analog Electrical Parameters

Parameter Symbol Condition Min Typ Max Unit

Static Parameters

Rising Threshold 895 940 990 mV

Falling Threshold 810 860 900 mV

Hysteresis 65 80 90 mV

Dynamic Parameters

Rising Delay 1 10 20 us

Falling Delay 1 10 20 us

12.4 VDCIN Power Source Detection Comparators

TheVDCIN Power SourceDetector is usedto indicate when thevoltagelevel on the VDCINpin has settled above~

940mV.

Figure 35: VDCIN Detection

ThesamesequenceofoperationaswithVBUSisfollowedforboot-up.Aninterruptisgeneratedbaseduponthedetection

ofpowerappliedorremovedfromtheVDCINpin.

VDCINRising(ConnectionEvent)

WhentheVDCINlevelatthecomparatorbecomeshigherthanthereferencevoltage(includingrisingedgehysteresis),

VDCINisconsideredvalid.IftheVDCINDBENbitissetintheVDCINDETCTRLregister,VDCINmustbesensedasvalid

for the full 100ms de-bounce time before the SDCINDET bit in the SPWRSRCIRQ register is set, indicating adapter

connection.IfVDCINDBENiscleared,SDCINDETissetimmediatelyuponVDCINbecomingvalid.

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ADC 6021 Dokumentacja Strona 75