RH-18/36/38 Company confidential
Engine module CCS Technical Documentation
Page 30 Nokia Corporation. Issue 1 10/03
Power Supply
All power supplies for the RF Unit are generated in the UEM IC (D200). All power outputs
from this IC has a decoupling capacitor at which the supply voltage can be checked.
The power supply configuration is described in the block diagram below:
Figure 16: Power supply configuration
The names in bold are signal names used on the RF schematic pages. Names in the boxes
within the Mjoelner and the VCO refers to pin names on the respective ICs (N600, G600).
Table 19: Power supply signals
Supply name RF Supply name UEM Min Typ Max Unit
VTX VR2 2.64 2.78 2.86 V
VXO VR3 2.64 2.78 2.86 V
VCP VR1A 4.75 V
VPLL VR5 2.64 2.78 2.86 V
VRX VR6 2.64 2.78 2.86 V
VVCO VR7 2.64 2.78 2.86 V
VBB VIO 1.72 1.8 1.88 V
VREF2 VrefRF01 1.334 1.35 1.366 V
VBATT BATTERY 3.1 3.6 5.2 V
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