LU3X34FTR

Preliminary Data Sheet July 2000 LU3X34FTR Quad 3 V 10/100 Ethernet Transceiver TX/FX Overview The LU3X34FTR is a fully integrated, 4-port 10/100 Mbits/s physical layer device with an integrated transceiver. This part was designed specifically for 10/100 Mbits/s switches. These applications typically require stringent functionality in addition to very tight board space, power, and cost requirements. The LU3X34FTR supports RMII and SMII interfaces, offering the designer multiple reduced pin count interfaces to save both real estate and cost in system design. The LU3X34FTR was designed from the beginning to conform fully with all pertinent specifications, from the ISO 1/ IEC 2 11801 and EIA 3/TIA 568 cabling guidelines to ANSI 4 X3.263TP-PMD to IEEE 5 802.3 Ethernet specifications. s s FX mode configurable on a per-port basis. Built-in analog 10 Mbit receive filter, removing the need for external filters. Built-in 10 bit transmit filter. 10 Mbit PLL, exceeding tolerances for both preamble and data jitter. 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, crosstalk, and baseline wander. Transmit rise-fall time manipulated to provide lower emissions, amplitude fully compatible for proper interoperability. Programmable scrambler seed for better FCC compliancy. s s s s s Features s s 4-port, single-chip, integrated physical layer and transceivers for 10...