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LXT971A Dual-Speed 3.3 V 10/100 Ethernet Transceiver Product Description Demand for high-performance network applications requiring lower power is growing rapidly in today’s marketplace. The LXT971A Dual-Speed 3.3 V 10/100 Ethernet Transceiver with Carrier Class Ethernet Support (LXT971A Transceiver) is a lowpower, single-port Fast Ethernet transceiver with significantly expanded Cable Discharge Event (CDE) protection. The LXT971A transceiver includes an MII with extended register capability and an optional 2.5 V power supply interface for additional power savings. For 100BASE-FX fiber networks, the LXT971A Transceiver is designed with a pseudo-ECL (PECL) interface for seamless integration with common industry standard fiber modules. Revolutionary design techniques incorporate our 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. Innovative Packaging The LXT971A Transceiver is delivered in a 7 mm × 7 mm plastic ball grid array (PBGA) package. 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 LXT971A Transceiver offers a Sleep mode in addition to two Power Down modes. When the LXT971A Transceiver detects an absence of energy on the twisted pair input, it minimizes power consumption by shutting down the transmitter and placing the receiver in low-power mode. Carrier Class Ethernet Many networking and telecom applications require high-performance Ethernet components capable of operating under harsh environmental conditions. Our 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. Our Carrier Class Ethernet product portfolio includes solutions for the Ethernet physical layer, as well as repeater technologies at a variety of speeds. Our 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 Transceiver Block Diagram RESET ADDR<4:0> MDIO MDC MDINT MDDIS Management/ Mode Select Logic Clock Generator Register Set REFCLK TxSLEW<1:0> TX PCS TX_EN TXD<4:0> TX_ER TX_CLK VGC GND PWRDWN Power Supply Parallel/Serial Converter Manchester Encoder 10 Scrambler & Encoder 100 OSP Pulse Shaper TP Driver + – TP/ Fiber Out + ECL Driver COL Clock Generator Collision Detect RX PCS RX_CLK RDX<4:0> RXDV CRS RX_ER JTAG OSP Slicer Register Set Serial to Parallel Converter Carrier Sense Data Valid Error Detect Media Select + 100 Manchester Dencoder Decoder & Unscrambler OSP Slicer TDI TDO TMS TCK TRST 100TX – + 10 TPFON – Auto Negotiation LED/CFG<3:1> TPFOP 100FX – + TP/ Fiber In TPFIP TPFIN SD/TP 10BT – – 2953 Bunker Hill Lane, Suite 300, Santa Clara, CA 95054, Phone: (408) 217-7300 Fax: (408) 217-7350, [email protected] Copyright © 2014 Inphi Corporation. All rights reserved. Inphi is a registered trademark of Inphi Corporation. Document Number: 248913 – 5.0 Functional Description Features Benefits Applications 3.3 V power supply 64-pin, 7 mm x 7 mm PBGA package -40 ºC to +85 ºC temperature testing Sleep mode MII interface • 2.5 V MII interface option Optimal Signal Processing Baseline Wander Correction Next Page Exchange PECL interface Programmable LED drivers 10/100 Mbps full-duplex operation Boundary scan (JTAG) test port Helps lower power consumption Provides small-profile packaging Enables industrial applications Helps minimize power consumption Complies with industry standards • Additional power savings Helps improve data recovery and EMI performance Provides consistent, error-free performance Enables transfer of additional information during auto-negotiation Provides 100BASE-FX fiber-optic capability Enables flexible network monitoring Allows simultaneous transmit and receive Enables board-level testing of the LXT971A Transceiver Network interface cards (NICs) PCMCIA cards Cable modems Set-top boxes IP phones LXT971A Product Family Product Identifier Package Temperature Range LXT971ABC 64-pin PBGA Commercial (0 oC to +70 oC) LXT971ABE 64-pin PBGA Extended (-40 oC to +85 oC) LXT971ALC 64-pin LQFP Commercial (0 oC to +70 oC) LXT971ALE 64-pin LQFP Extended (-40 oC to +85 oC) 2953 Bunker Hill Lane, Suite 300, Santa Clara, CA 95054, Phone: (408) 217-7300 Fax: (408) 217-7350, [email protected] Copyright © 2014 Inphi Corporation. All rights reserved. Inphi is a registered trademark of Inphi Corporation. Document Number: 248913 – 5.0