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Block Diagrams
7-5
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FM Radio Block diagram
VIO
RE
LL
O
RT
N
O
C
I
ADC
Q
ADC
Si470 8/ 09
DSP
FILTER
DEMOD
MPX
AUDIO
SCLK
SDIO
L
O
RT
N
O
C
E
C
AF
RE
T
NI
SEN
DAC
DAC
ROUT
LOUT
0 / 90
LOW- IF
RSSI
TUNE
GPIO
REI
FI
LP
M
A
GPIO
RST
RFGND
LNA
FMIP
AFC
AGC
PGA
RCLK
REG
VA
VD
32.768 kHz
Headphon e
Cable
RDS
(Si470 9)