LG KE520 Service Manual page 132

FM Radio Block Diagram
Headphone
Cable
FMI P
RFGND
32.768 kHz
RCLK
2.7V ~ 5.5V VA
VD
Copyright © 2007 LG Electronics. Inc. All right reserved.
Only for training and service purposes
LNA
PGA
AGC 0 / 90
TUNE AFC
XTAL
REG
OSC
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6. Block Diagram
SI4703
DSP LOUT
I
DAC
ADC
FILTER
DEMOD
ROUT
MPX
Q
DAC
AUDIO
ADC
GPIO
LOW-IF GPIO
VIO
RDS
RST
SI4703
SDIO
SCLK
RSSI
SEN
LGE Internal Use Only