Circuit Descriptions; Power Distribution - Nokia 9000i Service Manual

After Sales
Technical Documentation
Signal Name
VREF
VBATT
GND

Circuit Descriptions

Power Distribution

PSL+
VBATT
VCHAR
VL2
32Kx1
6
SRAM
VA1
PCM
CO-
DEC
VF
Original, 08/96
Table 22. Signals Between RF and PWRU
Supply voltage for VCXO
Battery voltage
Ground
VL1
VL2
VA3
VA1
VA2
VREF
VL2
DSP
HF power
amplifier
Figure 2. Power Distribution Diagram
Function
VA2 VL1
RFI
VL1 VCHAR
ASIC
VL1
VREF VL1 VL1
2
E PR
MCU
OM
8Kx8
RAE/RAK–1N
Baseband
Notes
From PWRU to RF
From PWRU to RF
Common ground
VBATT VREF
RF
PDA/UIF module
VBATT
LCD Driver LCD LCD
PDA
pro-
cessor
VL1 VL1
FLAS SRA
H M
512Kx 64Kx
16 16
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