Samsung SCH-3500 series Service Manual page 21

Circuit Description
ANTENNA
RF
RF Control Signals
and
IF
Circuits
Offset Controls
Receive Data
and Status
IFR3000
Transmit I and Q Data
Receive Data
and Status
IFT3000
Receive Data
and Status
MSM3000
Mobile Station Modem
RF
Interface
CDMA
Processor
DFM
PROCESSING
General Purpose
ADC Interface
MODE Select Interface
ANSI/IEEE 1149.1-1990
JTAG Interface
Figure 6-1 Baseband Block Diagram
SAMSUNG Proprietary-Contents may change without notice
UART
Microprocessor Bus
ARM7TDMI
Microprocessor
Subsystem
General-Purpose Interface Bus
GENERAL
PURPOSE
INTERFACE
RINGER
PCM Data
VOCODER
PCM Data
Extemal Mode Selection
Digital Test Bus
6-3
External
Test/Debug
System
Peripheral
Circuits
Address/Data
(RAM, ROM,
EEPROM,
Display, etc.)
Keypad
1 2 3
4 5 6
7 8 9
0
CODEC
Aux.
CODEC
SPK
MIC