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| The AMD AlchemyTM Solutions Am1772TM Wireless LAN Chipset AMD's next generation of wireless LAN solutions A cost-effective wireless LAN solution optimized to deliver high performance for low power, small formfactor applications. Overview The AMD AlchemyTM Solutions Am1772TM wireless LAN chipset is the first offering from AMD's next generation of wireless LAN solutions. An optimized IEEE 802.11b Wi-FiTM based wireless LAN solution that combines low-power consumption with a small form factor, the Am1772 wireless chipset is the first building block in a longterm wireless strategy from AMD. By listening to the needs of wireless LAN solution providers, we've created a compact design that enables highly cost-effective, small form factor solutions. The two-chip, direct-down conversion design also allows the Am1772 chipset to be used in conjunction with other wired and wireless technologies to create innovative system solutions. Highlights The Am1772 chipset has been designed to help: Preserve board space The Am1772 requires a minimal number of additional components. The AMD AlchemyTM Solutions Am1770TM wireless product is a world-class, Zero-IF, 2.4GHz DSSS transceiver that features a highly integrated design. By eliminating the need for external VCOs and an Rx/Tx filter--and requiring a single external 44MHz oscillator-- the Am1770 transceiver conserves precious board space and reduces the Bill of Materials. Lower power consumption The Am1772 chipset is optimized for low-power consumption solutions, combining a CMOS RF transceiver and medium access controller baseband processor. Improve performance The AMD AlchemyTM Solutions Am1771TM wireless product incorporates a pioneering low-noise digital interface to the Am1770 transceiver, which allows the development of high performance and low component count WLAN solutions. It also features on-chip MAC hardware acceleration to help minimize CPU utilization compared to today's technology. The descriptor-based DMA architecture also eliminates the need for external SRAM and Flash memory, and is designed to improve system efficiency while providing an easy path for host CPU software enhancements to support future WLAN security and QoS requirements. At a Glance Am1770TM Zero-IF Transceiver * No external VCO, tank circuitry, loop and SAW filter * Digital interface to Am1771 BB/MAC * Automatic calibration of filter cut-off frequencies * Self-contained AGC requires no BB intervention * Automatic Tx Power Level Control (APLC), including level adjustment * High receiver sensitivity designed to increase performance and range Am1771TM Integrated Baseband/MAC * Eliminates external SRAM and Flash memory * PCI and CardBus host bus interface * On-chip MAC hardware acceleration resulting in low CPU utilization * Advanced low-power CMOS process lowers operating current * Full support of all 802.11b long and short header modes * State-of-the-art channel equalizer provides robust and stable performance in a variety of environments P R E L I M I N A RY AMD AlchemyTM Solutions Am1772 Wireless LAN Chipset POWER SUPPLY 2.5 V EEPROM 2.5 V I/O 1.8 V Core 3.3 V I/O AGC ADC LNA ADC Rx_Q Rx_I Media Independent Proprietary Interface BIRX BORX PCI/ CardBus Host I/F PCI/CardBus CLK Package Am1770 Zero-IF Transceiver (7x7)mm 48-pin LQFP PA VCO PLL DAC Tx_I BTX Tx_Q DAC SDATA Am1770TM RF Trancseiver CTRL TXRX PA_CTRL Am1771 BB/MAC Controller (13x13)mm 176-ball LFBGA XTAL OSC TXRX_SW ANT_SW LED Control Logic Baseband MAC LEDs Am1771TM Baseband/MAC Specifications IEEE standard support Variable data rates Frequency band Receive sensitivity (8% PER) 802.11b compliant 11, 5.5, 2, and 1 Mbps (short and long header modes) ISM-band (2400MHz--2484MHz) -87dBm (@11Mbps) -90dBm (@5.5Mbps) -92dBm(@2.0Mbps) -95dBm(@1.0Mbps) Security WEP Operating temperature Power supply * Power consumption in (mW) Am1770 Transceiver Tx mode Rx mode Listen mode Sleep mode 175mW 210mW N/A 7.5mW Am1771 MAC/BB 40mW 85mW 45mW 30mW Operating system support * Windows(R) 98 * Windows ME * Windows 2000 * Windows XP * Windows NT(R) * Linux WEP 40- and 128-bit, TKIP + WPA* -40C to +85C for Am1771 -20C to +80C for Am1770 Am1770: 2.5V Am1771: 1.8V, 2.5V, 3.3V System documentation * User guide * Data sheets * Application notes * Complementary drivers and utilities Reference design kits (RDKs) * Mini PCI type IIIb * PC card (CardBus) Software enhancements planned for TKIP + WPA in the future About AMD AMD is a global supplier of integrated circuits for the personal and networked computer and communications markets with manufacturing facilities in the United States, Europe, Japan, and Asia. AMD, a Fortune 500 and Standard & Poor's 500 company, produces microprocessors, flash memory devices, and support circuitry for communications and networking applications. Technical Support USA & Canada: 800-222-9323 or 408-749-5703 USA & Canada PC Microprocessor: 408-749-3060 USA & Canada Email: hw.support@amd.com Latin America Email: latinamerica.support@amd.com Europe & UK: +44-0-1276-803299 Fax: +44-0-1276-803298 France: 0800-908-621 Germany: 089-450-53199 Italy: 800-877224 Europe Email: euro.tech@amd.com Far East Fax: 852-2956-0588 Japan Fax: 81-3-3346-7848 Founded in 1969 and based in Sunnyvale, California, AMD had revenues of $3.9 billion in 2001. (NYSE: AMD) Literature Ordering On the Web: www.amd.com/support/literature.html USA & Canada: 800-222-9323 Europe Email: euro.lit@amd.com Far East Fax: 852-2956-0588 Japan Fax: 03-3346-9628 www.amd.com One AMD Place P.O. Box 3453, Sunnyvale, CA 94088-3453, USA Tel: 408-732-2400 or 800-538-8450 TWX: 910-339-9280 TELEX: 34-6306 (c) 2002 Advanced Micro Devices, Inc. All rights reserved. AMD, the AMD Arrow Logo, AMD Alchemy and combinations thereof, and Am1770, Am1771, and Am1772 are trademarks of Advanced Micro Devices, Inc. Windows and Windows NT are registered trademarks of Microsoft Corporation. Other names used herein may be trademarks of their respective companies. RECYCLED & RECYCLABLE Printed in the USA 26875A-US PCI/CardBus Host Interface FRAME COMPOSER TIMER |
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