Nokia N96 Service Manual

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Nokia N96 Service Manual Manual pdf 186 page image

Absolute maximum ratingsSignal Min Nom Max Unit NotesBattery voltage (idle) -0.3 +4.5 V Battery voltage maximum value isspecified during active chargingBattery voltage (Call) +3.2 +4.3 V Battery voltage maximum value isspecified during active charging,defined by SWCharger input voltage -0.3 +20 VBack-Up supply voltage 0 2.5 2.6 V Maximum capacity of the backuppower supply assumed to be 4 μAh.Phone modes of operationMode DescriptionNO_SUPPLY (Dead) mode means that the main battery is not present or its voltage is too low (belowEM ASIC N2200 master reset threshold) and that the back-up battery voltage is too low.BACK_UP The main battery is not present or its voltage is too low, but back-up battery voltageis adequate and the 32kHz oscillator is running (RTC is on).PWR_OFF In this mode (warm), the main battery is present and its voltage is over EM ASIC N2200master threshold. All regulators are disabled, PurX is on low state, the RTC is on andthe oscillator is on. PWR_OFF (cold) is almost the same as PWR_OFF (warm), but the RTCand the oscillator are off.RESET RESET mode is a synonym for start-up sequence. In this mode certain regulators areenabled and after they and RFClk have stabilized, the system reset (PurX) is releasedand PWR_ON mode entered. RESET mode uses 32kHz clock to count the REST mode delay(typically 16ms).SLEEP SLEEP mode is entered only from PWR_ON mode with the aid of SW when the systemactivity is low. There are in principle three different sleep modes:• Application processor sleep• RAPIDO sleep• Application processor and RAPIDO sleep (deep sleep)In sleep mode N2200’s regulators VIO, VDRAM, VSIM1 and VANA are in low quiescentcurrent mode (output voltages still present but regulators will not give as much currentout). VSIM2 is permanently off, and VAUX is always in the power on mode. Otherregulators including VR1 supplying system clock oscillator are disabled.In SLEEP mode, N2390 VCore SMPS regulator is in low quiescent current mode.In SLEEP mode, N2300 EM ASIC linear regulator VOUT state depends on the accessoryconnected to the AV connector, if there is any.FLASHING FLASHING mode is for SW downloading.RM-247System ModulePage 7 –6 COMPANY CONFIDENTIAL Issue 1Copyright © 2008 Nokia. All rights reserved.