Nokia Customer Care TF5 Technical Information
Company Confidential TFE-4/RV-1
Issue 2.0 Mar/2005 Copyright © 2005 Nokia Corporation. Page 8a-11
Company Confidential
Ignition-Off Mode
The ignition-off power mode is same as active mode and active locked power mode, but
the power supplies are kept alive because the PowerOffx line is held high by the UPP.
This is to enable log-off from GSM network and to enable to continue active phone call
when car is switched off. When those tasks are finished, UPP will set Poweroffx line low
and the RU will switch to standby mode.
Carbatt-Fail Mode
This mode is reached, when the Carbattery is out of the ‘normal’ operating range. Like in
standby mode all main power supplies are switched off, only power supply for wakeup
logic is active.
RF
Baseb
and
Regu-
lators
6
VR2-7
VR1A
VIO
VSIM
VCORE
VAN
VFLASH1
RTC
PA
Supply
SIM
UPP
FLASH
Baseband
UEM
Blue
tooth
VBA
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