Baseband Processor (Ad6724, U104); Only For Training And Service Purposes - LG KP235 Service Manual

3. TECHNICAL BRIEF

3.5 Baseband Processor (AD6724, U104)

• AD6724 is an ADI designed processor
• AD6724 consists of
FEATURES-DIGITAL
Complete Integrated Programmable Digital
Baseband Processor divided into three main
subsystems:
Control Processor Subsystem including:
• 32-bit MCU ARM7TDMI® Control Processor
• 39 MHz operation at 1.8V
• 1Mb of on-chip System SRAM Memory
DSP Subsystem including:
• 16-bit Fixed Point DSP Processor
• 91 MIPS[1] at 1.8V
• Data and Program SRAM
• Program Instruction Cache
• Full Rate, Enhanced Full Rate and Half Rate
Speech Encoding/Decoding
• Capable of Supporting AMR & PDC Speech
Algorithms
Peripheral Subsystem including:
• Shared Peripheral Bus and Interface
Peripherals
Peripheral Functions
• Parallel and Serial Display Interface
• Keypad Interface
• Flash Memory Interface
• Page-Mode Flash Support
• 1.8V and 3.0V, 64 kbps SIM Interface
• Universal System Connector Interface
• Data Services Interface
• Battery Interface (e.g. Dallas)
Control of Radio Subsystem
Three independent programmable backlight
outputs
Real Time Clock with Alarm
Programmable Power Management and Clock
Management Supports 13 MHz and 26 MHz
Input Clocks
Slow Clocking Scheme for Low Idle Mode
Current Power Down modes
On-chip support for GSM Data Services up to
14.4Kbits/sec, GPRS, HSCSD and IrDA
JTAG Interface for Test and In-Circuit Emulation
LGE Internal Use Only
FEATURES-ANALOG
Baseband Transmit Section
• GMSK Modulator
• I-channel & Q-channel Transmit DACs and
Filters
• Power Ramping DAC
Baseband Receive Section
• I-channel and Q-channel Receive ADCs and
Filters
Auxiliary Section
• Voltage Reference
• Automatic Frequency Control DAC
• Auxiliary ADC
• Light Controllers
Audio Section
• 8 kHz & 16 kHz Voiceband Codec
• 48 kHz Monophonic DAC
• Power Amplifiers
Poer Management Section
• Voltage Regulators
• Battery Charger
• Battery Protection
264-Ball package (17x17 grid), 12x12mm,
0.65mm ball pitch
APPLICATIONS
GSM850/GSM900/DCS1800/PCS1900 Wireless
Terminals GSM Phase 2 Compliant
Copyright © 2008 LG Electronics. Inc. All right reserved.
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Only for training and service purposes