GSM/GPRS Digital Baseband Processor
For Smartphone and Wireless Handheld Devices
Preliminary Technical Data
AD6528
FEATURES
Complete Single Chip Programmable Digital
Baseband Processor divided into three main
subsystems:
Control Processor Subsystem including:
VOICEBAND /
BASEBAND
CODEC
UNIVERSAL
SYSTEM CONN.
INTERFACE
DSP
32-bit MCU ARM7TDMI® Control Processor
On-chip System SRAM Memory
DSP Subsystem including
CHANNEL
CODEC
INTERFACE
TEST
INTERFACE
16-bit Fixed Point DSP Processor
Expanded Data and Program SRAM
Program Instruction Cache
Full Rate, Enhanced Full Rate and Half Rate
Speech Encoding/Decoding
CHANNEL
EQUALIZER
DISPLAY
INTERFACE
SPEECH
CODEC
SIM
INTERFACE
RADIO
INTERFACE
DMA Subsystem including
16/32 channel chaining DMA
Peripheral Functions
SYSTEM
SRAM
DATA
INTERFACE
ACCESSORY
INTERFACE
Parallel and Serial Display Interface
Fast USB slave interface/ Fast IrDA
SPI slave/master
MCU
KEYPAD /
BACKLIGHT
INTERFACE
MEMORY
INTERFACE
CONTROL
PROCESSOR
MMC/SD-Card support
Keypad Interface
FLASH Memory Interface
Pseudo SRAM support
13/26 MHz clock detection
FIGURE 1. AD6528 FUNCTIONAL BLOCK DIAGRAM
1.8V and 3.0V, 64 kbps SIM Interface
Universal System Connector Interface
Baseband Converter Interface
Data Services Interface
GENERAL DESCRIPTION
The AD6528 is the third device in the Analog Devices
AD20msp430 series of SoftFone® GSM Baseband Processors.
The AD6528 is intended for use in feature-rich Smartphone and
Wireless PDA/handheld computer applications with
GSM/GPRS connectivity. It is designed to interface easily to an
application processor in such systems.
Control of Radio Subsystem
Three independent programmable backlight outputs
Real Time Clock with Alarm
Programmable Power and Clock Management
Slow Clocking Scheme for Low Idle Mode Current
Power Down modes
On-chip support for GSM Data Services up to
14.4kbits/sec, Class 12 GPRS, HSCSD
JTAG Interface for Test and In-Circuit Emulation
1.8V Typical Operating Voltage
Operating Voltage Range 1.7V - 1.9V
Independent I/O and Memory Voltages
160-Ball LFBGA (mini-BGA) package
The AD6528 integrates full rate, enhanced full rate and half rate
speech codecs as well as a full range of data services including
circuit-switched 14.4kb/s, GPRS to Class 12, and HSCSD. In
addition, it supports A5/1 and A5/2 encryption algorithms as
well as operation in non-encrypted mode.
The highly programmable architecture and sophisticated internal
communication channels of the AD6528 offer maximum
flexibility to system designers. It can adapt to tighter
requirements led by changes in standards and multi-standard
handset implementation.
APPLICATIONS
GSM850/900/DCS1800/PCS1900 Smartphone and
Wireless PDA/Handheld Computers
GSM Phase 2 & GPRS Compliant
Full support for Java™, M-Services, and Multimedia
Messaging Services (MMS)
A complete data sheet is available under Non-Disclosure
Agreement to pre-qualified developers of GSM/GPRS terminal
equipment. Contact your local Analog Devices Sales Office.
ARM® and ARM7TDMI® are registered trademarks of ARM Limited
SoftFone® is a trademark of Analog Devices, Inc.Java™ is a trademark
of Sun Microsystems, Inc.
Rev. PrA
This Information applies to a product under development. Its characteristics and specifications are subject to change without notice. Analog Devices
assumes no obligation regarding future manufacture unless otherwise agreed to in writing. No responsibility is assumed by Analog Devices for its use;
nor for any infringements of patents or other rights of third parties that may result from its use. No license is granted by implication or otherwise under
any patent or patent rights of Analog Devices.
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