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AD20MSP415 Dataheets PDF



Part Number AD20MSP415
Manufacturers Analog Devices
Logo Analog Devices
Description GSM/DCS1800/PCS1900 Baseband Processing Chipset
Datasheet AD20MSP415 DatasheetAD20MSP415 Datasheet (PDF)

a FEATURES Complete Baseband Processing Chipset Performs: Speech Coding/Decoding (GSM 06.XX) Channel Coding/Decoding (GSM 05.03) Equalization with 16-State Viterbi, Soft Decision All ADC and DAC Interface Functions Includes All Radio, Auxiliary and Voice Interfaces Support for GSM Data Services Embedded 16-Bit Microcontroller Embedded 16-Bit DSP Integrated SIM and Keyboard Interface Interface to AD6430 GSM RF Chipset Interface to EFR Coprocessor JTAG Boundary Scan Layer 1 Software Provided with .

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a FEATURES Complete Baseband Processing Chipset Performs: Speech Coding/Decoding (GSM 06.XX) Channel Coding/Decoding (GSM 05.03) Equalization with 16-State Viterbi, Soft Decision All ADC and DAC Interface Functions Includes All Radio, Auxiliary and Voice Interfaces Support for GSM Data Services Embedded 16-Bit Microcontroller Embedded 16-Bit DSP Integrated SIM and Keyboard Interface Interface to AD6430 GSM RF Chipset Interface to EFR Coprocessor JTAG Boundary Scan Layer 1 Software Provided with Chipset Software Compatible with AD20msp410 Full Phase 2 Protocol Stack Software Available Full Reference Design Available for Baseband Section and Radio Section Ultralow Power Design 2.7 V to 3.3 V Operating Voltage Intelligent Power Management Features XXX mW Power Dissipation in Talk Mode XX mW Power Dissipation in Standby Mode Two TQFP Devices, Occupying Less than 7.5 cm2 APPLICATIONS GSM/DCS1800/PCS1900 Mobile Radios GSM/DCS1800/PCS1900 Baseband Processing Chipset AD20msp415 SYSTEM ARCHITECTURE AD20msp415 VOICEBAND/ BASEBAND CODEC 256K 16 ROM 128K 8 RAM DISPLAY 2K 8 EEPROM KEYPAD GSM PROCESSOR AD6422 AD6421 RADIO SIM DATA TERMINAL ADAPTER CHIPSET COMPONENTS GSM Processor (GSMP) GENERAL DESCRIPTION The Analog Devices GSM Baseband Processing Chipset provides a competitive solution for GSM based Mobile Radio Systems. It is designed to be fully integrated, easy to use, and compatible with a wide range of product solutions. Examples are GSM900, DCS1800, PCS1900 handsets and PCMCIA data cards. The AD20msp415 is the higher integrated successor of the AD20msp410 chipset, which passed European GSM Type Approval in June, 1996. The chipset consists of two highly integrated, sub-micron, low power CMOS components that perform the entire baseband signal processing of the GSM handset. The system architecture is designed to be easily integrated into current designs and form the basis for next generation designs. The chipset uses an operating supply voltage of 2.7 V to 3.3 V which, coupled with the extensive power management features, significantly reduces the drain on battery power and extends the handsets talk time and standby time. REV. 0 Information furnished by Analog Devices is believed to be accurate and reliable. However, 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. The AD6422 combines application specific hardware, an embedded 16-bit DSP and an embedded 16-bit microcontroller (Hitachi H8/300H). It performs channel coding and decoding and executes the protocol stack and user software. The DSP implements full rate speech transcoding according to GSM specifications, including Discontinuous Transmission (DTX) and Comfort Noise Insertion (CNI). A high performance softdecision Viterbi equalizer is also implemented in software embedded in the DSP. The embedded microcontroller executes the Layer 1, 2, 3 and user MMI software. The required Layer 1 software is supplied with the chipset. To ensure minimum power consumption, the GSMP has been designed to control all the power-down functions of the other components in the handset. Voiceband/Baseband Converter (VBC) The AD6421 performs the voiceband and baseband analog-todigital and digital-to-analog conversions, interfacing the digital sections of the chipset to the microphone, loudspeaker and radio section. In addition, the VBC contains all the auxiliary converters for burst-ramping, AFC, AGC, battery and temperature monitoring. The chipset interfaces directly with the radio and supplies all the synthesizer and timing control signals required to support two synthesizers and a variety of radio architectures including the AD6450 GSM RF-Chipset. Software The required Layer 1 software is supplied with the chipset. In addition, an object code license is available for Layers 2 and 3 of the protocol stack. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781/329-4700 World Wide Web Site: http://www.analog.com Fax: 781/326-8703 © Analog Devices, Inc., 1997 AD20msp415 ARCHITECTURE OVERVIEW Analog Devices and The Technology Partnership (TTP) provide a cost effective and proven method of attaining the baseband processing subsystem and protocol stack software. This data sheet includes functional descriptions of the baseband processing subsystem and the Protocol Stack Layer 1. The Technology Partnership can provide licenses to software and reference designs in all areas of a GSM handportable terminal. For detailed information about the individual chipset components, please refer to the AD6421 (VBC) and AD6422 (GSMP) data sheets for electrical characteristics and timing information. FUNCTIONAL DESCRIPTION channel coding function also supports data transmission at full rate and half rate. After the interleave process (if necessary) the data is enc.


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