SAMSUNG SGH-800C
Manual de Servicio

3-2 Baseband Block Diagram

System Clock
GSM/DCS Memory VOCODER

+3V SIM Card SIM Card Serial Data Interface +5V SIM Card I/O Interface

System RAM 4M

B.B Interface A/D Interface

Battery Voltage

System memory

Battery Temperature

Flash ROM 16M

GSM/DCS KERNEL 5

I/O BB Filter

RF 3V Tx

RF Interface

AGC, AFC 3.0V PLL 3V BRIGHT 3V SYNTH

EEPROM 128K

8M ROM (Voice Recognition) Charging Circuit

KeyPad 3.6V Li_lon Battery (3.6V) Graphic LCD Ni_MH Battery (3.6V) 3.6V

DC/DC Converter

LDO Regulators

3.0V AVCC

VCC BB LDO Regulator

3.3V

RTC VCC

3-2

Samsung Electronics