product brief may 1998 LU3X51FT-J80 single-port 10/100 ethernet transceiver tx/fx overview the LU3X51FT-J80 is a fully integrated 10/100 mbit physical layer device with transceiver. this part was designed for 10/100 mbit applications where board space, cost, and power are at a premium and strin- gent functional interoperability is a necessity. the LU3X51FT-J80 is a powerful device for the forward migration of legacy 10 mbit products and non compli- ant 100 mbit devices. the LU3X51FT-J80 was designed from the beginning to conform fully with all pertinent specifications, from the iso/iec 11801 and eia/tia 568 cabling guidelines to ansi x3.263 tp- pmd to ieee* 802.3 ethernet specifications. features n single-chip integrated physical layer and trans- ceiver for 10base-t and/or 100base-t functions n ieee* 802.3 compatible 10base-t and 100base-t physical layer interface and ansi x3.263 tp-pmd compatible transceiver n pecl interface for external fx transceiver n built-in analog 10 mbit receive filter, removing the need for external filters n built-in 10 mbit transmit filter * ieee is a registered trademark of the institute of electrical and electronics engineers, inc. n 10 mbit pll exceeding tolerances for both pream- ble and data jitter n 100 mbit pll, combined with the digital adaptive equalizer, robustly handles variations in rise-fall time, excessive attenuation due to channel loss, duty-cycle distortion, cross talk, and baseline wan- der n transmit rise-fall time manipulated to provide lower emissions, amplitude fully compatible for proper interoperability n programmable scrambler seed for better fcc compliancy n selectable cim, class ii support, and powerful mii drivers for repeater applications n ieee* 802.3u clause 28 compliant auto negotia- tion for full 10m and 100m control n fully configurable via pins and management accesses n extended management support with interrupt capabilities n phy mib support n symbol mode option n full led support n low-power cmos implementation n 80-pin qfp package
LU3X51FT-J80 product brief single-port 10/100 ethernet transceiver tx/fx may 1998 lucent technologies inc. reserves the right to make changes to the product(s) or information contained herein without notice. n o liability is assumed as a result of their use or application. no rights under any patent accompany the sale of any such product(s) or information. copyright ? 1998 lucent technologies inc. all rights reserved printed in u.s.a. may 1998 pn98-149lan for additional information, contact your microelectronics group account manager or the following: internet: http://www.lucent.com/micro e-mail: docmaster@micro.lucent.com n. america: microelectronics group, lucent technologies inc., 555 union boulevard, room 30l-15p-ba, allentown, pa 18103 1-800-372-2447 , fax 610-712-4106 (in canada: 1-800-553-2448 , fax 610-712-4106) asia pacific: microelectronics group, lucent technologies singapore pte. ltd., 77 science park drive, #03-18 cintech iii, singap ore 118256 tel. (65) 778 8833 , fax (65) 777 7495 china: microelectronics group, lucent technologies (china) co., ltd., a-f2, 23/f, zao fong universe building, 1800 zhong shan xi road, shanghai 200233 p. r. china tel. (86) 21 6440 0468 , ext. 316 , fax (86) 21 6440 0652 japan: microelectronics group, lucent technologies japan ltd., 7-18, higashi-gotanda 2-chome, shinagawa-ku, tokyo 141, japan tel. (81) 3 5421 1600 , fax (81) 3 5421 1700 europe: data requests: microelectronics group dataline: tel. (44) 1189 324 299 , fax (44) 1189 328 148 technical inquiries: germany: (49) 89 95086 0 (munich), united kingdom: (44) 1344 865 900 (bracknell), france: (33) 1 41 45 77 00 (paris), sweden: (46) 8 600 7070 (stockholm), finland: (358) 9 4354 2800 (helsinki), italy: (39) 2 6601 1800 (milan), spain: (34) 1 807 1441 (madrid) LU3X51FT-J80 block diagram tptx+/- fotx+/- tprx+/- forx+/- 10/100-tx pcs clock synthesis 10/100-tx drivers autoneg rx10 squelch adaptive equalizer baseline wander correction leds management interface register/ config/ control txd txen txer txclk miiena rxd rxdv mdio mdc mdioint rxer rxclk col/fcrs crs mii interface logic 10/100-rx pcs and recovery leds fosd+/-
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