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