LG KG271 - FM Radio Interface

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3. TECHNICAL BRIEF
3.15 FM Radio Interface
RADIO
(FOR FM RADIO)
(10V,K,X5R)
NO RADIO
FOR RADIO
2.7K
RADIO
RADIO_DETECT
27K
2V8_VIO
FOR RADIO
C339 0.1u
0R327
VBAT
R342
NA
47
R338
2V8_RADIO
R331 0
0.1uC333
100K
R343
R334
10K
NA
R340
330K R341
R329 20K
8
16
VA
11
VD
VIO
10
5
_RST
6
_SEN
2
FMIP
4
GND1 GND2
12
GND3
15
GPIO1
19
18
GPIO2
GPIO3
17
14
LOUT
NC1
1
20
NC2
PGND
21
9
RCLK
3
RFGND
13
ROUT
SCLK
7
SDIO
U302
SI4702-B16
R336
4.7K
FM_RST
NLAS5223BMNR2G U305
COM1
3
COM2
9
GND
6
4
IN1
8
IN2
NC1
5
7
NC2
2
NO1
10
NO2
1
VCC
0R328
20KR330
C330 1u
9
BGND
BYPASS
23
GND
7
VDD
VIN1
1
VIN2
5
8
VOUT1
6
VOUT2
_SHDN
4
U303 LM4809LD
R333 39K
R337
4.7K
6
BGND
2
GND
NC
5
STBY
1 3
VIN VOUT
4
1u C329
BH28FB1WHFVU304
2V8_RADIO
R344 240K
2V8_RADIO
R335
100K
TP301
RADIO_AMP_SHDN
100pC331
C342 1u
C341 1u
R339
27K
2V8_RADIO
C332 0.1u
FM_INT
0.1u C338
22n C335
100K R345
NAC334
2V8_RADIO
NAR325
2V8_RADIO
2V8_VIO
2V8_VIO
39KR326
0.1u
C340
FM_ANT
FM_32K
EPPA1
FM_INT
RADIO_AMP_SHDN
RADIO_DETECT
RADIO_AMP_SHDN
RADIO_EN
RADIO_SPK_R
RADIO_SPK_L
FM_SCL
FM_SDA
RADIO_SPK_R RADIO_SPK_L
FM_RST
AUXOP_FMR
AUXOP_FML
HEADSET_RADIO_SEL
EPPA1