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8. CIRCUIT DIAGRAM
1
2V8_VMEM
A
B
C
R213
AUXIN
0
C223
C251
C224
10u
10u
39p
D
AUXIP
E
1
LGIC(42)-A-5505-10:01
2
3
4
U200
YMU759B
R230
1
11
13MHZ
CLK1
HPOUT_R
4
10
MIDI_RST
0
_RST
30
HPOUT_L
ADD0
A0
R231
31
12
EQ1
RD
_RD
29
MIDI_CS
_CS
33K
R232
5
13
EQ2
IFSEL
10K
28
WR
_WR
C232
3
MIDI_INT
_IRQ
390p
27
14
EQ3
DATA8
D0
26
2
DATA9
D1
EXT1
25
19
DATA10
D2
EXT2
24
DATA11
D3
23
DATA12
D4
22
17
DATA13
D5
SPOUT1
21
DATA14
D6
20
DATA15
D7
R235
PLLC
SPOUT2
6
0.1u
18
3.3K
C234
VREF
9
R238
SPVDD
15
32 SDOUT
10K
C235
C236
C237
R239
VDD
0.1u
47p
47p
7
C238
0
16
0.1u
VSS
SPVSS
8
U202
LP3981ILD-3.3
1
6
VOUT
VEN
2
5
VIN
BYPASS
C239
C240
3
4
2.2u
VOUT_SE
GND1
0.1u
(2012)
4.7u
GND2
C241
C225
39p
C226
39p
U203 MAX9075EXK-T
U204 MAX9075EXK-T
5
VIN-
4
VCC
1
5
VIN-
4
HOOK_DETECT
0
VIN+
3
OUT
VCC
1
GND
2
VIN+
3
OUT
GND
R220
2
R225
HEADSET_MIC_P
0
2
3
4
5
6
7
C200
39p
R234
0
U201
NLAS4684MR2
1
10
V+
NO2
R236
2
9
NO1
COM2
0
3
8
COM1
IN2
4
7
IN1
NC2
R206
5
6
RCVP
NC1
GND
4.7
C207
39p
R207
RCVN
4.7
VMIDI_CTL
C210
39p
SPK_RCV_EN
R211
VINNORP
100
R214
VINNORN
100
JACK_DETECT
C244
NA
(1608)
C227
10u
R224
4.7
HEADSET_SPK_P
R226
4.7
HEADSET_MIC_P
C229
C243
C230
C242
47p
NA
47p
NA
Section
Designer
Checked
Approved
Iss.
Notice No.
Date
Name
5
- 84 -
8
9
10
CN200
C208
1
47p
2
C211
C212
39p
39p
C216
C250
C217
10u
10u
39p
(1608)
R240
0
MIC200
1
C219
2
39p
OB4-15L42-C33L
CLOSE TO MIC
Headset jack
5
1
3
4
2
J200
Date
Sign & Name
MODEL
C3100
DRAWING
AUDIO/MIDI
NAME
DRAWING
LG Electronics Inc.
VER 1.0
NO.
LG Electronics Inc.
A
B
C
D
Sheet/
Sheets
2/6
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