ADC 6021 Especificaciones descargar pdf (Pagina 74)

MYXPM6021*

Revision 1.1 - 10/21/14

*Advanced information. Subject to change without notice.

MYXPM6021*

Form #: CSI-D-685 Document 011

Figure 33: VSYS Valid Input Power Detection

Table 46: VSYSREF Denition

Parameter Description Min Typ Max Unit

VSYSREFH VSYS Rising Threshold (VSYS: L->H) 2.975 3.0 3.035 V

VSYSREFL VSYS Falling Threshold (VSYS: H->L) 2.675 2.70 2.725 V

tDEBOUNCE VSYS comparator debouncing time 90 100 110 ms

12.3 VBUS Power Source Detection

TheVBUSPowerSourceDetectorisusedtoindicatewhenthevoltagelevelontheVBUSpinhassettledabove~940mV.

Figure 34: USB Detection

VBUSRising(ConnectionEvent)

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

VBUSis consideredvalid.If theVBUSDBEN bitis setinthe VBUSDETCTRLregister,VBUS mustbe sensedas valid

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

connection.IfVBUSDBENiscleared,SVBUSDETissetimmediatelyuponVBUSbecomingvalid.

VBUSFalling(DisconnectionEvent)

WhentheVBUSlevelatthecomparatorbecomeslowerthanreferencevoltage(includingfallingedgehysteresis),VBUS

isconsideredinvalid. Ifthe VBUSDBEN bitis set inthe VBUSDETCTRLregister, VBUSmust besensedas invalidfor

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ADC 6021 Especificaciones Pagina 74