GENERAL DESCRIPTION
The AD6526 is the second device, after the AD6522, of the Analog Devices AD20msp430 series of SoftFone® GSM Baseband Processors. The AD6526 provides a competitive solution for GSM/GPRS terminal designs. It is designed to be fully integrated, easy to use, and compatible with GSM900, DCS1800 and PCS1900 handsets as well as direct PC data interface. No external SRAM is needed in most applications.

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 Zero-wait-state System SRAM
      DSP Subsystem including
         16-bit Fixed Point DSP Processor
         Data and Program SRAM
         Program Instruction Cache
         Full Rate, Enhanced Full Rate and Half Rate
            Speech Encoding/Decoding
      Peripheral Subsystem including
         Shared Peripheral Bus and Interface
            Peripherals
   Peripheral Functions
      Parallel and Serial Display Interface
      Keypad Interface
      FLASH Memory Interface
      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 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
      14.4 kbits/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 Wireless Terminals
   GSM Phase 2 & GPRS Compliant