14
14
D-EJ2000
5-3. Block Diagram – Power Supply Section –
VOL
DET
DELAY
LINEAR
CONSTANT CURRENT,
CONSTANT VOLTAGE
CHARGING BATTERY
CHARGE CIRCUIT
CHARGING BATTERY
VOLTAGE DETECTOR
CIRCUIT
PRE-DRIVER
SWITCHING
POWER
CIRCUIT
Q401
CHARGE
SWITCH
Q402
B+
SWITCH
Q406
STAND ON
DETECT
Q405
EXTERNAL BATTERY
DETECT
SWITCHING
POWER
CIRCUIT
INTERFACE
VG
POWER
CIRCUIT
CLK
OR OSC
55
65
82
66
CHGSW
VOUT
INP1
RF41
RF41
RF4
RF4
VCC2
VCPU
INP3
VCC2
VCPU
VCC1
INM4
INM4
APCREF
PAPC
PA PC
WAKE
LATCH
DATA
CLOCK
DATA
CLOCK
VLGO4
SYNC
8
7
78
LDOUT
76
LDIN
77
100
99
97
6
10
61
9
96
70
86
60
90
72
5
MSDTO
MSCK
PD
66
LD
C
E
D
B
A
SYNC
DELAY
INP2
INP2
RS1
DCIN
VIN
INP3
VCC1
VCC3
L2L
RS1
64
VOUT
CHGSW
VIN
56
17
18
INP1
RF7
DTC7
DCIN
L2L
85
VDSW20
20
VCC3
DELAY
62
LATCH
WAKE
VLGO2
BATM1
CHGMNT
CHGMNT
VLGO4
VLGO2
VG
L5
3
2
VG
L5
BATM1
RSTB
XWAKE
8
RESET
75
XPOWLT
21
AD CHGMNT
74
VDSEL
27
AD DCINMNT
33
EXTBATT
37
XSTAND ON
22
AD BATMNT
80
LEDDISP
IC801 (3/3)
SYSTEM CONTROLLER
VCC1 1.9V
59 VDRAM
VCPU 1.9V
VCC2
VIN
VIN
VIN
VD
VIN/VD
IC601
IC602
D801
CHARGE
91
VCC3
D408
D404
L412
D402
RECHARGEABLE
BATTERY
NH-14WM
1PC. 1.2V
VIN
DC IN 3V
–
+
J402 (1/2)
J402 (2/2)
EXT BATT
IC402 (3/3)
POWER CONTROL
RV401
VCPU
92
SAW
GEN.
Q412
SWITCH
Q410
SWITCH
Q404
SWITCH
Q407
SWITCH
Q403, 409
DELAY
Q411
VIN
DETECT
74
D401
J401
(CHARGING STAND)
CHARGE
TH401
D407
IC405
4
3
IC404
4
1
3
6
5
3
IC403 (2/2)
SWITCH
VDSW19
19
INP7
15
UPCKB7
13
Q408
SWITCH
UPCK7
11
VLG07
14
Содержание CD Walkman D-EJ2000
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