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TX
Radio transmitter
UEME
Universal energy management chip (enhanced version)
UEMEK
See UEME
UI
User interface
UPP
Universal phone processor
UPP_WD2
Communicator version of DCT-4 system ASIC
USB
Universal serial bus
VBAT
Battery voltage
VCHAR
Charger voltage
VCO
Voltage controlled oscillator
VCTCXO
Voltage controlled temperature compensated crystal oscillator
VCXO
Voltage controlled crystal oscillator
VSIM
SIM voltage
WD
Watchdog
Zocus
Current sensor (used to monitor the current flow to and from the battery)
RM-25
Nokia Customer Care
Glossary of terms
Page Glossary–6
Company Confidential
9235618 (Issue 2)
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