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10
Power Supply
Fig. 2-3 Generated power voltages
DC-DC
CONVERTER
POWER
CONTROL
+3.3 [V]
REG
+3.3 [V]
REG
+3.5 [V]
REG
+3.3 [V]
REG
+3.3 [V]
REG
REG
UM-4×2
D1
IC561
IC562
IC563
IC564
IC523
Q522 / IC522
UN REG 2.5[V]
VCC 4.0
[V]
VCC 3.5
[V]
PCM_VCC 3.3[V]
MIC_VCC 3.3[V]
DIVID_VCC 3.5[V]
SYS_VCC 3.3[V]
MS_VCC 3.3[V]
DC IN 3.0V
IC168 POWER AMP
IC164 ADPCM
IC165 DIVIDER
IC161 AGC
IC162 MIC AMP
IC163 VOR DETECTOR
IC162 MIC AMP
IC163 VOR DETECTOR
IC721 REAL TIME CLOCK
IC722 SYSTEM CONTROLLER
IC723 EEP ROM
IC727 S-RAM
IC722 SYSTEM CONTROLLER
IC723 EEP ROM
IC727 S-RAM
MEMORY STICK
+3.0 [V]
REG
J1
LCD720 LCD UNIT ( VCC / VC1 )
IC728
e
IC524
c
d
h
i
j
f
g
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