product brief Intel LXT971A ® Dual-speed 3.3V 10/100 Ethernet Transceiver With Intel® Carrier Class Ethernet Support Product Description High-performance network applications that demand lower power are growing rapidly in today’s marketplace. Intel, a leading provider of Ethernet silicon solutions, has enhanced the commitment to its Ethernet product family with its latest 10/100 Fast Ethernet transceiver. The Intel® LXT971A is a next-generation low-power, single-port PHY with significantly expanded Cable Discharge Event (CDE) protection. Revolutionary design techniques incorporate Intel’s Optimal Signal Processing (OSP) architecture, an ideal combination of digital signal processing and analog design techniques designed for die size, power consumption, performance, reliability, and testability. Applications Low-power, dual-speed network applications for the LXT971A transceiver include: network interface cards (NICs), PCMCIA cards, cable modems, set-top boxes and IP phones. The LXT971A includes an MII with extended register capability and an optional 2.5V power supply interface for additional power savings. For 100BASE-FX fiber networks, the LXT971A is designed with a pseudo-ECL (PECL) interface for seamless integration with common industrystandard fiber modules. Innovative Packaging Intel delivers the LXT971A in a 7mm x 7mm plastic ball grid array (PBGA) packaging. This revolutionary package helps save board space and is available in the popular industrial temperature range that is ideal for network applications in extreme thermal environments. For flexibility in very low-power applications, the Intel Carrier Class Ethernet Many networking and telecom applications require high-performance Ethernet components capable of operating under harsh environmental conditions. Intel® Carrier Class Ethernet products support operation over the entire extended temperature range while providing features that increase reliability. Each device has an operation lifetime of at least 10 years with less than 100 failures per billion hours. All Intel Carrier Class Ethernet devices will be available a minimum of 5 years from product introduction. The Intel Carrier Class Ethernet product portfolio includes solutions for Ethernet physical layer, switching and repeater technologies at a variety of speeds. Intel Carrier Class Ethernet products are ideal for applications where equipment must function reliably in uncontrolled environmental conditions such as base stations, telecom/network switches, factory floor equipment, and industrial computers. LXT971A Block Diagram RESET ADDR<4:0> MDIO MDC MDINT MDDIS VGC GND PWRDWN Power Supply Management/ Mode Select Logic Clock Generator Register Set REFCLK TxSLEW<1:0> Manchester Encoder 10 Scrambler & Encoder 100 TX PCS TX_EN TXD<4:0> TX_ER TX_CLK Parallel/Serial Converter OSP Pulse Shaper TP Driver + – TP/ Fiber Out + ECL Driver COL OSP Slicer Clock Generator Collision Detect RX_CLK RDX<4:0> RXDV CRS RX_ER JTAG Register Set LED/CFG<3:1> Serial to Parallel Converter Carrier Sense Data Valid Error Detect Media Select 100 Manchester Dencoder Decoder & Unscrambler OSP Slicer TPFON + TDI TDO TMS TCK TRST 100TX – + 10 TPFOP – Auto Negotiation RX PCS Intel Internet Exchange Architecture ® LXT971A offers a Sleep mode in addition to two Power Down modes. When the LXT971A detects an absence of energy on the twistedpair input, it minimizes power consumption by shutting down the transmitter and placing the receiver in low-power mode. 100FX – + 10BT – TP/ Fiber In TPFIP TPFIN SD/TP Features Benefits ■ 3.3V power supply ■ Helps lower power consumption ■ 64-pin, 7mm x 7mm PBGA package ■ Provides small-profile packaging ■ - 40ºC to +85ºC temperature testing ■ Enables industrial applications ■ Sleep mode ■ Helps minimize power consumption ■ MII interface – 2.5V MII interface option ■ Complies with industry standards – Additional power savings ■ Optimal Signal Processing ■ Helps improve data recovery and EMI performance ■ Baseline Wander Correction ■ Provides consistent, error-free performance ■ Next Page Exchange ■ Enables transfer of additional information during auto-negotiation ■ PECL interface ■ Provides 100BASE-FX fiber-optic capability ■ Programmable LED drivers ■ Enables flexible network monitoring ■ 10/100Mbps full-duplex operation ■ Allows simultaneous transmit and receive ■ Boundary scan (JTAG) test port ■ Enables board-level testing of the LXT971A LXT971A Product Family Intel® Internet Exchange Architecture Product Identifier LXT971ABC Package 64-pin PBGA LXT971ABE 64-pin PBGA LXT971ALC 64-pin LQFP LXT971ALE 64-pin LQFP Temperature Range Commercial 0°C to +70°C Extended -40°C to +85°C Commercial 0°C to +70°C Extended -40°C to +85°C 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 ww.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 Information in this document is provided in connection with Intel products. No license, express or implied, by estoppel or otherwise, to any intellectual property rights is granted by this document. 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