LU3X31T-T64

Preliminary Data Sheet July 2000 LU3X31T-T64 Single-Port 3 V 10/100 Ethernet Transceiver TX Overview The LU3X31T-T64 is a fully integrated 10/100 Mbits/s physical layer device with an integrated transceiver. It is provided in a 64-pin TQFP package with low-power operation and powerdown modes. Typical applications for this part are CardBus and PCMCIA Ethernet products. Operating at 3.3 V, the LU3X31T-T64 is a powerful device for the forward migration of legacy 10 Mbits/s products and noncompliant (does not have autonegotiation) 100 Mbits/s devices. The LU3X31T-T64 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. s 100 Mbits/s PLL, combined with the digital adaptive equalizer, robustly handles variations in risefall time, excessive attenuation due to channel loss, duty-cycle distortion, crosstalk, and baseline wander Transmit rise-fall time can be manipulated to provide lower emissions, amplitude fully compatible for proper interoperability Programmable scrambler seed for better FCC compliancy s s s IEEE 802.3u Clause 28 compliant autonegotiation for full 10 Mbits/s and 100 Mbits/s control Fully configurable via pins and management accesses Extended management support with interrupt capabilities PHY MIB support Symbol mode option Low-power operation: <150 mA max Low autonegotiation power: <30 mA Very low powerdown m...