Samsung SGH-S300 Service Manual page 14

4. SGH-S300 Block Diagrams
1. RF Solution Block Diagram
GSM:925MHz~960MHz
Antenna
DCS:1805MHz~1880MHz
RF
FILTER
PCS:1930MHz~1990MHz
FEM
GSM:890MHz~915MHz
PAM
DCS:1710MHz~1785MHz
PCS:1850MHz~1910MHz
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L
PGA
N
PGA
A
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SI4200
DET
TX VCO
RF
PLL
SI4133T
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ADC
CHANNEL
FILTER
ADC
100KHz
SI4201
CLK
IF
PLL
4-1
CSP1093
I
PGA
DAC
Q
PGA
DAC
SERIAL DATA
BASE
INTERFACE BAND
I
Q
TCVCXO
13MHz
AFC
TXPOWER
UI
AUDIO
TRIDENT
DSP16000
ARM7TDMI