GENERAL DESCRIPTION
TheAD6426 Enhanced GSM Processor (EGSMP) is the central component of the highly integrated AD20msp425 GSM Chipset. Offering a low total chip count, low bill of materials cost and long talk and standby times, the chipset offers designers a straightforward route to a highly competitive
product in the GSM/DCS1800 market. The EGSMP performs all the baseband functions of the Layer 1 processing of the GSM air interface. This includes all data encoding and decoding processes as well as timing and radio sub-system control functions.

FEATURES
Complete Single Chip GSM Processor
Channel Codec Subsystem including
 Channel Coder/Decoder
 Interleaver/De-interleaver
 Encryption/Decryption
Control Processor Subsystem including
 16-bit Control Processor (H8/300H)
 Parallel and Serial Display Interface
 Keypad Interface
 EEPROM Interface
 SIM-Interface
 Universal System Connector Interface
 Interface to AD6425
 Control of Radio Subsystem
 Programmable backlight duty cycle
 Real Time Clock with Alarm
 Battery ID Chip Interface
DSP Subsystem including
 16-bit DSP with ROM coded firmware for
 Full rate Speech Encoding/Decoding (GSM 06.10)
 Enhanced Full Rate Speech
  Encoding/Decoding (GSM 06.60)
 Equalization with 16-state Viterbi (Soft Decision)
 DTMF and Call Progress Tone Generation
Power Management of Mobile Radio
Slow Clocking scheme for low Idle Mode current
Ultra Low Power Design
On-chip GSM Data Services up to 14.4 kbit/s
JTAG Test Interface
2.4V to 3.3V Operating Voltage
144-Lead LQFP and 144-Lead PBGA packages

APPLICATIONS
GSM 900 / DCS1800 / PCS1900 Mobile Stations (MS) Compliant to Phase 1 and Phase 2 specifications