product brief Intel LXT9761/81, LXT9762/82 and LXT9763 ® 10/100BASE Hex/Octal Ethernet Transceivers Product Overview www.intel.com/ design/network The Intel family of 10/100BASE Hex/Octal Ethernet transceivers can provide significant savings for high-density switch and router applications. With one of the broadest Ethernet product lines in the industry, Intel stands ready to deliver the 10Mbps, 100Mbps and 1000Mbps devices OEMs require to meet their customers’ needs. LXT976x/8x Family of Advanced Multi-Port Fast Ethernet Transceivers Product Ports LXT9761 6 LXT9781 8 Interface RMII (3.3/2.5V) RMII (3.3/2.5V) LXT9762 LXT9782 6 8 SMII (3.3/2.5V) SMII (3.3/2.5V) LXT9763 6 MII (3.3/2.5V) Package 208 PQFP 208 PQFP & 272 PBGA 208 PQFP 208 PQFP & 272 PBGA 208 PQFP LXT9761/81 LXT9762/82 and LXT9763 Block Diagram RMII/SMII Contr ADD_<4.0> MDIO MDC MDINT 8 Port Global Functions Management/ Management/ Mode Mode Select Select Logic Logic && LED LED Drivers Drivers 2 2 2 RESET PWRDN TXDn REFCLK SYNC (SMII only) Clock Generator Geerator Register Set TX PCS ® + Parallel/ Serial Converter Manchester Decoder 10 Decoder & Descrambler 100 TP TP Driver Driver – Pulse Shaper TP/ Fiber Out + TPFOPn TPFONn ECL Driver – Auto Negotiation Management Counters CIM Register Set Fiber Select n + LEDn_<2:0> 3 Media Select Clock Generator Port LED Drivers Adaptive EQ with BL Wander Cancellation 100TX 100TX – + 100FX RXDn RX PCS Intel Internet Exchange Architecture With the proliferation of PCs and other Internet appliances, the need for faster data transmission is becoming more and more of a necessity. Intel, a leader in Fast Ethernet technology, offers low-power, single-chip Hex/Octal 10BASE-T and 100BASE-TX/FX PHY products, bringing robust Cable Discharge Event (CDE) performance to networking systems such as switches and multi-port Network Interface Cards (NICs). The five transceivers in this product family, LXT9761, LXT9781, LXT9762, LXT9782, and LXT9763, are advanced 6-port and 8-port PHY transceivers incorporating Intel’s Optimal Signal Processing (OSP) architecture. OSP is an ideal combination of digital signal processing and analog design techniques developed to improve die size, power consumption, performance, reliability, and testability. Through this architecture, an Intel Hex/Octal 10/100BASE PHY provides low-power copper and fiber optic Ethernet connectivity. Interfaces available in this product family include the standard Media Independent Interface (MII), Serial MII (SMII), and Reduced MII (RMII), allowing switch ASIC designs to take advantage of low pin-count PHY interfaces. Carrier Sense Data Valid Error Detect Serial-toParallel Converter 10 Manchester Decoder – Slicer TP/ Fiber In + 100 Decoder & Descrambler 10BT – Per-Port Functions PORT 0 PORTS 1–7 TPFIPn TPFINn Features Benefits ■ 6 or 8 independent 10/100 ports ■ Helps simplify designs – Reduces board space – Reduces system cost ■ Low-cost standard PQFP Package ■ Helps reduce manufacturing and system costs ■ Very low power – 3.3V operation – 2.5V interface option ■ Helps reduce system cost and power – System design using only 3.3V – 3.3 and 2.5V interfaces available ■ Multiple interfaces – Media Independent Interface (MII) – Reduced MII – Serial MII ■ Provides system design flexibility – Legacy compliance – Lower pin count interface – Lowest pin count interface ■ Baseline wander correction ■ Offers consistent error-free performance ■ Auto negotiation/parallel detection ■ Helps maximize line-operating conditions ■ PECL interface ■ Utilizes 100BASE-FX fiber optic cable ■ Extended register capability ■ Provides added functionality ■ Configurable LED drivers ■ Provides for per-port activity/collision indicator ■ 10/100Mbps full duplex operation ■ Enables simultaneous data transmit/receive Intel® Internet Exchange Architecture Intel® Internet Exchange Architecture (IXA) is an end-to-end family of high-performance, flexible and scalable hardware and software development building blocks designed to meet the growing performance requirements of today’s networks. Based on programmable silicon and software building blocks, Intel® IXA solutions enable faster development, more cost-effective deployment, and future upgradability of network and communications systems. Additional information can be found at www.intel.com/IXA. Intel Access Developer’s Site developer.intel.com Intel Internet Exchange Architecture Home Page www.intel.com/IXA Networking Components Home Page developer.intel.com/design/network Other Intel Support: Intel Literature Center developer.intel.com/design/litcentr (800) 548-4725 7 a.m. to 7 p.m. CST (U.S. and Canada) International locations please contact your local sales office. General Information Hotline (800) 628-8686 or (916) 356-3104 5 a.m. to 5 p.m. PST Intel Corporation assumes no responsibility for the use of any circuitry other than circuitry embodied in an Intel product. No other circuit patent licenses are implied. Information contained herein supersedes previously published specifications on these devices from Intel. *Other brands and names are the property of their respective owners. For more information, visit the Intel Web site at: developer.intel.com UNITED STATES AND CANADA Intel Corporation Robert Noyce Bldg. 2200 Mission College Blvd. P.O. Box 58119 Santa Clara, CA 95052-8119 USA Copyright © 2001 Intel Corporation EUROPE Intel Corporation (UK) Ltd. Pipers Way Swindon Wiltshire SN3 1RJ UK ASIA-PACIFIC Intel Semiconductor Ltd. 32/F Two Pacific Place 88 Queensway, Central Hong Kong, SAR JAPAN Intel Japan (Tsukuba HQ) 5-6 Tokodai Tsukuba-shi 300-2635 Ibaraki-ken Japan SOUTH AMERICA Intel Semicondutores do Brazil LTDA Rue Florida, 1703-2 and CJ22 04565-001 Sao Paulo-SP Brazil Order Number: 248915-001 Printed in USA/0101/1K/ASI/CR