LG KP105 - FM Radio Interface

LGE Internal Use Only Copyright © 2008 LG Electronics. Inc. All right reserved.
Only for training and service purposes
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3. TECHNICAL BRIEF
3.15 FM Radio Interface
RADIO
2V8_VBUF
VOUT2
_SHDN
4
22n C207
U203 LM4809LD
9
BGND
BYPASS
23
GND
7
VDD
VIN1
1
VIN2
5
8
VOUT1
6
C209
0.1u
0.1u C208
R214
10K
47R217
C206
FM_RST
0.1u
C205 0.1u
TP201
R212 100K
2V8_VBUF
2V8_VBUF
2V8_VBUF
20KR207
39KR201
4.7K
R216
100pC204
2V8_VBUF
0R204
RADIO_AMP_SHDN
R206 20K
FM_INT
R215
4.7K
0R208
1u
C202
1u C203
_SEN
19
18
GPIO2
GPIO3
17
14
LOUT
NC1
1
20
NC2
PGND
21
9
RCLK
3
RFGND
13
ROUT
SCLK
7
SDIO
8
16
VA
11
VD
VIO
10
5
_RST
6
U202
SI4702-B16
2
FMIP
4
GND1 GND2
12
GND3
15
GPIO1
R211 39K
FM_32K
FM_SDA
FM_SCL
RADIO_SPK_R RADIO_SPK_L
FM_ANT
RADIO_AMP_SHDN
FM_INT
RADIO_AMP_SHDN
FM_RST