Global System for Mobile Communications (GSM)


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Global System for Mobile Communications (GSM)

  1. 1. Global System for Mobile Communications (GSM) National Semico nductor miconductor The Sight & Sound of Information
  2. 2. National Semiconductor’s Highly Integrated GSM Total System Solution National Semiconductor’s highly integrated GSM chipset provides a complete system solution for a Tri-Band GSM world phone. The chipset reduces the total system cost, number of ICs, component count, PCB area, and power consumption for the next generation of GSM cellular phones, while maximizing features, battery life, and performance. While the chipset’s architecture is designed for the requirements of GSM mobile phones, it has the flexibility to migrate into GPRS applications and beyond. Today National’s chipset powers one of the smallest, lightest, and most advanced mobile phones on the market. In addition, National Key Benefits of National’s GSM Chipset plans to offer FTA-capable reference designs • Complete GSM Phase 2+ system solution which provide turnkey solutions that reduce including radio transceiver, analog our customers’ time-to-market. Our world- baseband, digital baseband, and power class application centers in Europe, Asia, and management unit the United States will be available to provide support, enabling you to succeed in reaching • Quick time-to-market using FTA approved reference design from the market ahead of the competition. National Semiconductor and partners T66 Key Facts • National’s partners offer a complete handset solution Dimensions 92 x 41 x 18.5 mm • System architecture optimized for low Weight cost bill of materials 59g • Advanced power management extends Talk Time talk/standby time and battery life 1.5 – 5 hours Standby Time • Distributed DSP architecture in the 80 – 150 hours baseband reduces the processor power Tri-band requirements GSM900/1800/1900 • Voltage and frequency scaling allows Core Features power consumption to be optimized for WAP 1.2.1 Ericsson T66 the task the phone is performing EMS Mobile chat • Dual clock architecture minimizes power T9 Predictive text input consumption Calendar 2
  3. 3. System Diagram LMX3405 National’s GSM Chipset Micro 16 Mbit FLASH Controller DSP LMX3406 Core LCD ROM RAM Display LDO LDO LDO ROM RAM I RTC I2C Keypad LDO LDO CO- C Timers GPIO Charger PROCESSORS Battery C Charge Power UARTs SIM on CTRL EDAI RX U SIM Monitor Interface Battery DMA LED and µ-Wire MOD µ- LMX3403 Vibrator Control IF WIRE Interface Drivers Interface TDMA System Timer 32 kHz M 26 MHz Crystal Crystal Ramp 26 MHz Speaker PAs - LNAs CTRL REF OSC LMX3405 Interface with AFC Image RX ADC/ Aux Out DAC Rejection ∑-∆ SPEECH Mixer DAC Antenna RF Switch GMSK ADCs/ SPEECH TX DACs Mic TX MOD DAC RF, IF & Wide Band DAC Quadrature PLLs Modulator Aux In LMX3403 µ-Wire Interface & Control Keypad Light > <Temperature Sensor LCD Contrast> <General Purpose Block LMX3401 Buzzer> <Battery Type <Battery Control Chipset Features LMX3405 Digital Baseband The LMX3405 digital baseband processor is • GMSK modulator interface a highly integrated mixed signal solution • Autonomous TDMA system sequencer optimized for use in advanced handsets core with 9 programmable pins supporting the GSM900/1800/1900 versions • Digital audio interface of the GSM world standard. • Power saving dual clock architecture • GSM Phase 2+ compliant, 14.4 Kbps CSD with internal 32 kHz Real Time Clock and group III Fax support • State-of-the-art dual core JTAG debugging • RISC microcontroller with on-chip RAM capability • TeakLite DSP core with integrated • Peripheral interfaces for SIM, keypad, display, memory 2 UARTs, I2C, MICROWIRE, and SPI • On-chip programmable DSP PLL • Dedicated serial interface for RF deck control • Low power Viterbi and Fire/Cipher • Multi-band and multi-slot ready co-processors architecture • Supports Enhanced Full Rate, Full Rate, • Low power, low voltage operation and Half Rate vocoding • Space saving 192-pin, 14 x 14 mm • CPU and DSP message based semaphore FBGA package controlled shared memory interface 3
  4. 4. LMX3401 Radio Transceiver LMX3406 Power Management Unit The LMX3401 is a monolithic, integrated The LMX3406 is a programmable multi- radio transceiver optimized for use in the function Power Management Unit for power GSM900, GSM1800, and GSM1900 versions control in cell phones and other portable of the GSM world standard. It incorporates devices. all transmit and receive functions except for the LNA, PA, and RF VCOs. • Four programmable Low Dropout (LDO) • Highly integrated radio transceiver regulators • Low current consumption • Additional micro power LDO for powering the Real Time Clock • Triple band operation • Battery chargers for main and backup • Low IF output at 6.5 MHz Li-Ion cells • Integrated low noise PLLs and IF VCO • MICROWIRE serial interface control • Power efficient modulation synthesizer • Power on/off logic transmit architecture • Backlight LED driver with PWM brightness • Single BiCMOS chip in a 81-pin, control 9 x 9 mm FBGA package • Vibrator driver • Miniature 28-pad, 5 x 5 mm LLP package LMX3403 Analog Baseband The LMX3403 integrates all required analog Wireless And National Semiconductor: interface circuits that connect the LMX3401 A Natural Fit to the LMX3405 as well as an audio codec and GMSK modulator. National has all the technologies for your wireless needs and we are pioneering wireless • Highly integrated mixed signal solution solutions across the board. Our competencies • Integrated I,Q transmitter including span a wide range of technologies including GMSK modulator, 10-bit D/A conversion DCT, Bluetooth™ wireless solutions, Home RF, and all required reconstruction filtering 802.11, GSM/GPRS and 3G/UMTS. This rich • Low IF 6.5 MHz receiver including 12-bit portfolio of intellectual property combined with A/D converter, digital down conversion, our system level expertise will help you and digital channel select filter seamlessly create the products that your • High performance audio codec with customers demand. integrated low noise microphone We understand the challenges that our amplifier, speaker driver, and auxiliary customers face, and are committed to help interface you compete on performance, time-to-market, • Four general purpose 10-bit A/D and cost. Come join us as we make converters tomorrow’s technology a reality today. • Two general purpose 10-bit D/A converters 3G • Accurate 26 MHz crystal oscillator with 13-bit DAC for Automatic Frequency UMTS National Semiconductor Control 2.5G WCDMA GPS 2900 Semiconductor Drive • Integrated power amplifier ramp control EDGE PO Box 58090 circuitry and 10-bit DAC 2G GPRS Video Santa Clara, CA 95052 • Compact CMOS chip in a 100-pin, Bluetooth Data DECT 1 408 721 5000 10 x 10 mm FBGA package GSM Voice Visit our web site at: National is positioned for the For more information, Future of Wireless send email to: National Semiconductor The Sight & Sound of Information © National Semiconductor Corporation, February 2002. National Semiconductor and are registered trademarks of National Semiconductor Corporation. Bluetooth is a trademark of Bluetooth SIG, Inc. and is used under license by National Semiconductor. All other brands or product names are trademarks or registered trademarks of their respective holders. All rights reserved. 550249-001