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LGElectronicsConfidential
2.3.3Control SignalInterface
PowerisprovidedtotheLUM850T/LUM900TthroughPowerpins
thatrangefrom3.0Vto3.6V.
Notes:
1.AppliestoPERST#andW_DISABLE#.
2.Asmeasuredatthecardconnectorpad.
Symbol Parameter Conditions Min Max Units Notes
+3.3Vaux Supply Voltage 3.3‐9% V 2
VIH InputHighVoltage 2.0 3.6 V 1
VIL InputLowVoltage ‐0.5 0.8 V 1
IIN InputLeakageCurrent 0Vto3.3V ‐10 +10 μA1
ILKG OutputLeakageCurrent 0Vto3.3V ‐50 +50 μA1
2.3.4USIM Interface
TheUSIMinterfacepinsprovidetheconnectionsnecessaryto
interfacetoaUSIMsocketlocatedonhostsystem.
Voltagelevelsoverthisinterfacecomplywith3GPPstandards.
2.3.5Antenna Interface
Themodemhastwoconnectersforantennainterface.Theoneisfor
MainantennaandtheotherisforDiversityantenna(AUX).
TheconnectortypeisUF.Landthepathisassumedtobe50ohms.