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7. CIRCUIT DIAGRAM
1
2
R301
HSMICBIAS
330
C301
10u
VRIO
A
2K
R305
C302
10u
L301
C303
0.1u
R309
HSMICIP
100nH
100
C304
27p
L304
HSOR
100nH
C311
C312
NA
NA
C315
NA
B
L305
HSOL
100nH
C318
C319
NA
NA
R318
MICBIAS
1K
C
MICIP
27p
C329
MICIN
R324
R323
27p
C333
220K
C332
220K
27p
AUDIO AMP
D
1K
U303
R329
C335
0.1u
R330
51K
A1
SPKNA
IN+
1K
R331
C336
0.1u
R332
51K
C1
SPKPA
IN-
C2
SPK_EN
_SHDN
C339
C340
A2
GND1
B3
33nF
33nF
GND2
E
1
2
3
4
EAR JACK
VRIO
R302
200K
LMV7291MGX-NOPB
5
VIN-
4
R304
0
VCC
1
HOOKDET
VIN+
3
OUT
GND
2
U301
R306
10K
J301
C305
27p
VA301
VA302
VA303
Close to Ear-Jack
C309
NA
L302
100nH
C313
C314
82p
47p
C316
NA
HSDET
R312
0
L303
100nH
C317
R314
100p
200K
C320
C321
82p
47p
MIC
Close to MIC
C327
C328
R319
NA
10u
1K
R320
0
MIC301
1
27p
2
C330
R322
0
OSF211-42D
VA304
VA305
R325
1K
VBAT
LM4670ITL
B1
CLOSE TO CONNECTOR
VDD
C337
C338
B2
PVDD
1u
10u
A3
VO1
SPK_P
C341
C3
VO2
47p
SPK_N
C342
C343
47p
47p
3
4
5
6
7
BLUETOOTH (Shielding Block)
VBAT
R310
0
C307
0.1u
R313
0
D7
BT_CLK_REQ
IO0_EXT_CLK_REQ_OUT
C6
IO1_EXT_CLK_REQ_IN
B7
IO2_SCL
ANA_OUT
KA_OUT
RFIO_OUT
D5
IO3_SDA
A6
IO4
C4
IO5
C8
IO7
R316
B4
SYSCLKEN
IO14
F7
NA
IO15
F2
RFIO_LDO_OUT
G3
OSC_LDO_OUT
G4
TL_LDO_OUT
D2
ANA_LDO_OUT
A4
BB_LDO_OUT1
H5
BB_LDO_OUT2
F8
BB_LDO_OUT3
C323
C324
C325
C326
0.1u
4.7u
0.1u
1u
Connect the digital and analog ground in the 4 layer, do not connect on the top layer
DBF81H903
FB301
RF_P
6
GND1
5
BL2
4
BL1
RF_M
Section
Designer
Checked
Approved
Iss.
Notice No.
Date
Name
LG Electronics Inc.
5
- 101 -
8
9
VRIO
R307
KA_OUT
VLDO_OUT
0
10K
R308
C306
VLDO_OUT
C308
0.1u
4.7u
C310
CLK_32K
47p
ANA_OUT
H1
RFP
RF_P
H2
RFM
RF_M
C3
JTAG_TDI
E6
JTAG_TDO
B5
JTAG_TMS
D4
JTAG_TCK
E5
HCI_TX
BT_RX
E4
U302
HCI_RX
BT_TX
E8
HCI_CTS
BT_RTS
E7
BRF6150EZSL
HCI_RTS
BT_CTS
E2
R317
820
C322
0.1u
XTALP_FAST_CLK_IN
BT_CLK
E1
XTALM
C5
AUD_IN
MCSI1_DOUT
A7
AUD_FSYNC
MCSI1_SYNC
C7
AUD_OUT
MCSI1_DIN
B6
AUD_CLK
MCSI1_BCLK
C331
1u
UART_LV_TX
RFIO_OUT
1
NC
2
R326
0
DC
3
UNBL
ANT301
R327
R328
C334
NA
ANT302
NA
100p
Date
Sign & Name
MODEL
LG240
06/30
DH KIM
2006
DRAWING
AUDIO/BLUETOOTH
NAME
DRAWING
Rev 1.1
NO.
10
A
B
C
D
Sheet/
Sheets
3/7
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Troubleshooting
