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AD6426XST Folha de dados(PDF) 1 Page - Analog Devices |
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AD6426XST Folha de dados(HTML) 1 Page - Analog Devices |
1 / 50 page a Enhanced GSM Processor Preliminary Technical Information AD6426 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 which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Revision Preliminary 2.3 (June 9, ´98) - 1 - Confidential Information 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 GENERAL DESCRIPTION The AD6426 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. The EGSMP supports full rate and enhanced full rate speech traffic as well as a full range of data services including F14.4. CONTROL PROCESSOR DSP CHANNEL EQUALIZER SPEECH CODEC CHANNEL CODEC KEYPAD / BACKLIGHT INTERFACE ACCESSORY INTERFACE RADIO INTERFACE SIM INTERFACE MEMORY INTERFACE UNIVERSAL SYSTEM CONN. INTERFACE EEPROM INTERFACE TEST INTERFACE VOICEBAND / BASEBAND CODEC INTERFACE DISPLAY INTERFACE Figure 1. Functional Block Diagram In addition, the EGSMP supports both A5/1 and A5/2 encryption algorithms as well as operation in non-encrypted mode. The EGSMP integrates a high performance 16-bit microprocessor (Hitachi H8/300H), that supports all the GSM terminal software, including Layer 1, 2 and 3 of the GSM protocol stack, the MMI and applications software such as data services, test and maintenance. The use of the standard H8 processor allows the use of HIOS, the Hitachi real time kernel, as well as a full range of software development tools including C compilers, debuggers and in- circuit emulators. The EGSMP also integrates a high performance 16-bit Digital Signal Processor (DSP), which provides speech transcoding and supports all audio functions in both transmit and receive. In receive it equalizes the received signal using a 16-state (Viterbi) soft decision equalizer. The EGSMP interfaces with all the peripheral sub-systems of the terminal, including the keypad, memories, display driver, SIM, DTE and DTA data services interface and radio. It also has a general purpose interface that can be used to support an external connection to a car kit or battery charger. The EGSMP interfaces with the AD6425 or the AD6421 Voiceband/Baseband Codec through a dedicated serial port. ORDERING GUIDE Model Temperature Range Package AD6426XST -25°C to +85°C 144-Lead LQFP AD6426XB -25°C to +85°C 144-Lead PBGA |
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