Nokia 9000i - Circuit Descriptions; Power Distribution

After Sales
Technical Documentation
RAE/RAK–1N
Baseband
Page 2–17
Original, 08/96
Table 22. Signals Between RF and PWRU
Signal Name Function Notes
VREF Supply voltage for VCXO From PWRU to RF
VBATT Battery voltage From PWRU to RF
GND Ground Common ground
Circuit Descriptions
Power Distribution
PCM
CO-
DEC
FLAS
H
512Kx
16
SRA
M
64Kx
16
LCD
E
2
PR
OM
8Kx8
PDA/UIF module
ASIC
MCU
RFI
LCD
RF
PSL+
VBATT
VCHAR
VL1
VL2
VA1
VA2
VREF
VA1
VL2 VL1
VA2 VL1
VBATT VREF
VREF VL1 VL1 VL1 VL1
VL2
DSP
32Kx1
6
SRAM
VBATT
VL1
HF power
amplifier
VA3
PDA
pro-
cessor
LCD Driver
VCHAR
VF
Figure 2. Power Distribution Diagram