Analog Devices AD6528 pra Datasheet

GSM/GPRS Digital Baseband Processor

CHANNEL

CODEC

UNIVERSAL

DATA

CODEC

DISPLAY

MCU

SYSTEM

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:

32-bit MCU ARM7TDMI

®

Control Processor

On-chip System SRAM Memory

DSP Subsystem including

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

DMA Subsystem including

16/32 channel chaining DMA

Peripheral Functions

Parallel and Serial Display Interface
Fast USB slave interface/ Fast IrDA
SPI slave/master
MMC/SD-Card support
Keypad Interface
FLASH Memory Interface
Pseudo SRAM support
13/26 MHz clock detection

1.8V and 3.0V, 64 kbps SIM Interface
Universal System Connector Interface
Baseband Converter Interface

Data Services Interface
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

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)

SYSTEM CONN.

INTERFACE

TEST

INTERFACE

SIM

INTERFACE

INTERFACE

MEMORY

INTERFACE

DSP

CHANNEL

EQUALIZER

SPEECH

CODEC

SRAM

CONTROL

PROCESSOR

VOICEBAND /

BASEBAND

INTERFACE

INTERFACE

RADIO

INTERFACE

ACCESSORY

INTERFACE

KEYPAD /
BACKLIGHT
INTERFACE

FIGURE 1. AD6528 FUNCTIONAL BLOCK DIAGRAM

GENERAL DESCRIPTION

The AD6528 is the third device in the Analog Devices
AD20msp430 series of SoftFone
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.

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.

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.

®

GSM Baseband Processors.

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.