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