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1
2
KEY
POWERKEY
A
R310
KEY_ROW0
680
VA311
AVLC14S02050
1
R317
KEY_ROW1
680
VA302
AVLC14S02050
4
R324
KEY_ROW2
680
VA303
7
AVLC14S02050
B
R330
KEY_ROW3
680
VA330
VA304
STAR
AVLC14S02050
AVLC14S02050
R335
KEY_ROW4
680
VA305
AVLC14S02050
R339
680
VA306
KEY_COL0
AVLC14S02050
R340
680
KEY_COL1
R341
680
KEY_COL2
R342
680
KEY_COL3
R343
680
KEY_COL4
C
VA331
AVLC14S02050
G1
ADD01
A0
F1
MEMORY
ADD02
A1
E1
ADD03
A2
(128 + 32PSRAM)
D1
ADD04
A3
B1
ADD05
A4
C1
ADD06
A5
F2
ADD07
A6
EUSY0250201
E2
ADD08
A7
F6
(M36L0T7050T0)
ADD09
A8
D7
ADD10
A9
E7
ADD11
A10
B8
ADD12
A11
C8
ADD13
A12
D8
ADD14
A13
F7
ADD15
A14
E8
ADD16
A15
F8
ADD17
A16
D2
ADD18
A17
D
B2
ADD19
A18
B3
ADD20
A19
E6
ADD21
A20
2V8_VMEM
1V8_VCORE
B7
ADD22
A21
C7
ADD23
A22
C3
A23
D3
A24
E3
A25
B5
VCC11
L4
VCC12
B6
VCC21
K6
VCC22
J8
VCCQ1
K7
VCCQ2
L3
VCCQ3
D4
VPP
K5
P_VCC
K4
S_VCC
B4
VSS1
C4
VSS2
L1
VSS3
L2
E
VSS4
C326
L5
VSS5
1u
L6
C327
C328
C329
C330
VSS6
L7
0.1u
1u
10u
1u
VSS7
L8
VSS8
1
2
LGIC(42)-A-5505-10:01
3
4
VBAT
R301
END
10K
R309
680
CLR
2
3
LEFT
MENU
MIDI_VIBRATOR
5
6
UP
SEL
8
9
RIGHT
SEND
0
SHARP
DOWN
SIM_DATA
VA307
VA308
VA309
VA310
AVLC14S02050
AVLC14S02050
AVLC14S02050
AVLC14S02050
U300
KEY BACKLIGHT
RD38F3050L0ZBQ0
H2
D0
DATA00
H3
D1
DATA01
G3
D2
DATA02
H4
D3
DATA03
J5
C318
D4
DATA04
G5
1u
D5
DATA05
J6
D6
DATA06
H7
D7
DATA07
G2
D8
DATA08
J3
D9
DATA09
G4
D10
DATA10
J4
D11
DATA11
H5
D12
DATA12
G6
D13
DATA13
H6
D14
DATA14
J7
D15
DATA15
MIDI_KEY_BL1
J1
_S_CS1
C5
S_CS2
MIDI_KEY_BL2
D6
_P1_CS
_RAM_CS
K2
_P2_CS
R370
K8
P_MODE
_RESET
100
C2
_R_LB
_LBS
C350
D5
_R_WE
_WR
1000p
H1
_R_OE
_RD
F3
_R_UB
_UBS
K1
_CE1
_ROM_CS1
G8
_CE2
_ROM_CS2
K3
_CE3
E4
_WP
_F_WP
E5
_ADV
_ADV
F5
_WE
_WR
J2
_OE1
_RD
H8
_OE2
F4
_RST
G7
WAIT
_WAIT
C6
CLK
BURSTCLK
3
4
5
6
7
VIBRATOR
VBAT
C300
4.7u
U401
CN301
MIC5255-2.85BM5
1
5
1
IN
OUT
2
R315
GND
3
4
2
EN
BYP
1.5K
C302
C303
0.01u
1u
C304
27p
2V8_VMEM
SIM CONNECTOR
2V85_VSIM
2V85_VSIM
R336
20K
J300
4
1
GND1
VCC
5
2
VPP
RST
SIM_RST
R337
6
3
R338
0
IO
CLK
SIM_CLK
10
7
0
GND5
GND2
9
8
GND4
GND3
C314
C315
C316
C317
NA
220n
1000p
NA
VBAT
C319
C320
1u
1u
R344
R345
R346
R347
R348
R349
C321
C322
47
47
47
47
47
47
C323
1u
1u
1u
LEBB-S14H
LD300
LD301
LD302
LD303
LD304
LD305
LEBB-S14H
LEBB-S14H
LEBB-S14H
LEBB-S14H
LEBB-S14H
Iss.
Notice No.
Date
Name
5
- 103 -
8
9
2V8_VMEM
I/O CONNECTOR
R304
R305
R306
R307
R308
100K
100K
100K
100K
100K
R311
JTAGEN
R312
_RESET
R313
DSR
R314
TCK
R316
100
C301
RPWRON
R318
NA
1u
TMS
R319
47
USC0
R320
47
USC6
R321
DEBUG_RX
R322
TDI
R323
47
USC1
R325
47
USC2
R326
47
DEBUG_TX
R327
47
USC3
R328
TDO_1
R329
47
USC5
R331
USC4
R332
R333
BATT_EPROM
R334
BATT_TEMP
NA
1K
PIN
DAI
UART
VA300
C308
C309
C310
C311
C312
1u
USC0
CLOCK
-
0.1u
27p
1u
27p
1u
USC1
RX
RXD
TX
TXD
USC2
-
RTS/CTS(PC)
USC4
-
CTS/RTS(PC)
USC5
USC6
RESET
-
PRECHARGE CIRCUIT
VCHARGE
C325
0.1u
R355
PRECHARGE
1.5K
IMX9T110
Q301
Section
Date
Sign & Name
MODEL
2005
KIM H.J.
Designer
03.20
Checked
2005
LEE S.Y.
03.20
DRAWING
NAME
2005
Approved
KIM B.Y.
03.20
DRAWING
LG Electronics Inc.
NO.
7. CIRCUIT DIAGRAM
10
A
A
VCHARGE
VBAT
CN300
25
26
29
NA
1
NA
2
47
3
4
NA
5
6
7
8
9
47
10
NA
11
12
13
14
15
16
17
NA
18
19
20
21
22
47
23
NA
24
30
27
28
C305
C306
C307
39p
10p
3p
C313
10u
2012
C
VBAT
VBAT
C324
0.1u
LD306
2012,1%
R352
15
R353
D
1K
3
R356
Q401
2
2SC5585
47K
1
Sheet/Sheets
B2070
3/5
MEMORY, MMI, I/O
Ver.1.1
LG Electronics Inc.
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