3. Block Diagram
3-1 RF Block Diagram
225 MHz 45 MHz
I
RX IF
935 ~ 960 MHz
LC I & Q
LNA SAW SAW AGC
filter Demo.
O
filter filter
270 MHz 45 MHz
bias
RX
circuit
SAW
HD 155101BF
90 deg
/2
1160 ~ 1185 MHz RF VCO
Shift /2
LMX2336L
VCTCXO
13MHz
B.B.
Dual
PLL1 PLL2 /6
Block
Ant S/W
synth.
540 MHz
TCO-999
90 deg
Shift /2
LPF
270 MHz
890 ~ 915 MHz
270 MHz
P.A.
270 MHz
I
TX Loop
Phase I & Q
SAW filter
Detector Mod
O
TX VCO
Samsung Electronics 3-1
3-2 Baseband Block Diagram
System
+3V SIM Card
SIM Card
Clock
Serial Data
GSM/DCS
Interface
VOCODER
Memory
+5V SIM Card
I/O Interface
System
RAM 4M
B.B Interface Battery Voltage
A/D Interface
System
memory Battery
Temperature
Flash
RF
I/O BB Filter
ROM 16M
GSM/DCS
3V Tx
KERNEL 5
AGC, AFC
RF Interface
3.0V
3V SYNTH
EEPROM 128K
PLL
3V BRIGHT
8M ROM (Voice
Recognition)
Charging Circuit
KeyPad DC/DC
Converter
LDO 3.0V
3.6V
AVCC
Regulators
Li_lon Battery (3.6V)
3.6V
Graphic LCD
Ni_MH Battery (3.6V)
VCC
BB
LDO
RTC VCC
3.3V
Regulator
3-2 Samsung Electronics
CHOKE COIL 2nd Regulator Filter FET Switch
INPUT FRT 4.1V
9V DC
Reference
LED
Voltage
Switching TR
Circuit
UVLO
Overcurrent Protector
Battery Type Detector
Overheat
Charge Voltage Detector
Protector MPU
Charge Voltage Selector
Static Current Circuit
Feed Back FET Switch
Static Voltage Circuit
REAR 4.1V
Samsung Electronics
3-3 DTC Block Diagram
3-3
5V
Regulator
Power
Power DC/DC
Current
Stabilizer
(12V-28V)
Control Regulator
Detector
Voltage/Current
Ignition
Feed Back
MICOM
Data
Communication
EEPROM
DSP
TX
Amp
Calibration
RX
CODEC
Amp
Microphone
Volume Audio
Speaker
Control Amp
3-4
3-4 HFK Block Diagram
Cradle
Samsung Electronics