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4. Block Diagrams
4-1 Main Baseband
Block Diagrams 4-1
Battery
Type
Battery
Voltage
Battery
Temperature
3VTX
XVCC
RTC_3V3
Serial Data
Interface
I/O
Interface
A/D
Interface
AGC,AFC
PLL
LOAD
SWITCH
Charging
Circuit
Li-Ion Battery
ONE C
VIBRATOR
SYSTEM CLOCK
(13MHz)
SRAM
FLASH
EEPROM
RTC_CLOCK
(32.768KHz)
KEYPAD
SIM CARD
SPEAKER
MIC
LCD
BB INTERFACE
RF INTERFACE
AVCC
SIMVCC
ALERT_VCC
3VRF
VCC
Base Band Block Diagram of SGH-R200
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4-2 Block Diagrams
4-2 Main RF
IF SAW
Filter
(225MHz)
LC
Filter
(45MHz)
Dual Power AMP Module
SI4133G-XM2
VCTCXO
13MHz
HD155128TF
IF VCO
1080MHz
925~960MHz
Ant. S/W
VC1(GSM)
VC2(DCS)
LPF LPF
Dip.
TX
Rx Dual
SAW
filter
1805~1880MHz
Rx
Dual
SAW
filter
LNA
LNA
PLL1
PLL2
PGA
90 °
Shift
÷ 2
90MHz
÷ 6
90 °
Shift
÷ 2
DCS : 270MHz
GSM : 540MHz
I&Q
Mod.
GSM : 270MHz
DCS : 135MHz
Phase
Detector
Loop
filter
GSM : 270MHz
DCS : 135MHz
Baseband
Block
880 ~ 915MHz
1710 ~ 1785 MHz
Tx Dual
VCO
APCIC
Mixer 2
Serial data
interface
45MHz
270MHz
÷ 2
GSM : 1150~1185MHz
DCS : 1580~1655MHz
I
-I
Q
-Q
I&Q Demo.
I
-I
Q
-Q
CLK
SDATA
LE
bias circuit
Mixer 1
RF VCO
÷ 2
540MHz
Dual Directional
Coupler
GSM : 1150~1185MHz
DCS : 1575~1650MHz
(CH 62 : 947.4MHz)
(CH 698 : 1842.4MHz)
(CH 62 : 902.4MHz)
(CH 698 : 1747.4MHz)
CH 62 : 1172.4MHz
CH 698 : 1617.4MHz
RF Block Diagram of SGH-R200