KSZ8081MLX 10Base-T/100Base-TX Physical Layer Transceiver Description Micrel Inc., is a leading global manufacturer The KSZ8081MLX is a single-supply 10Base-T/ 100Base TX Ethernet physical-layer transceiver for transmission and reception of data over standard CAT-5 unshielded twisted pair (UTP) cable. The KSZ8081MLX is a highly-integrated, compact solution. It reduces board cost and simplifies board layout by using on-chip termination resistors for the differential pairs, by integrating a low-noise regulator to supply the 1.2V core, and by offering 1.8/2.5/3.3V digital I/O interface support. The KSZ8081MLX offers the Media Independent Interface (MII) for direct connection with MII-compliant Ethernet MAC processors and switches. of IC solutions for the worldwide analog, Applications • • • • • • Ethernet and high bandwidth markets. Game console IP phone IP set-top box IP TV LOM Printer The Company’s advanced products mixed-signal, include analog and power semiconductors; high performance communication, clock management, Ethernet switch and physical layer transceiver For more information, contact your local Micrel sales representative, or visit Micrel at: ICs. Company customers include leading www.micrel.com industrial, manufacturers of enterprise, consumer, automotive, The KSZ8081MLX provides diagnostic features to facilitate system bring-up and debugging in production testing and in product deployment. Parametric NAND tree support enables fault detection between KSZ8081MLX I/Os and the board. Micrel LinkMD® TDR-based cable diagnostics identify faulty copper cabling. mobile, and telecommunications, computer products. Corporation headquarters and state-ofthe-art wafer fabrication facilities are located in San Jose, CA with regional sales and support offices and advanced technology design centers situated throughout the The KSZ8081MLX is available in the 48-pin, lead-free LQFP package. Americas, Europe and Asia. In addition, the Company maintains an extensive network of distributors and reps worldwide. www.micrel.com 10/100Mbps MII MAC MII ON-CHIP TERMINATION RESISTORS MDC/MDIO MANAGEMENT KSZ8081MLX XI XO 25MHz XTAL 22pF 22pF MAGNETICS Functional Diagram RJ-45 CONNECTOR MEDIA TYPES: 10BASE-T 100BASE-TX KSZ8081RNA/KSZ8081RND - 10Base-T/100Base-TX PHY WITH RMII SUPPORT Key Features Benefits Single-chip 10Base-T/100Base-TX IEEE 802.3-compliant Ethernet transceiver Standard compliance ensures that the device will work with other standardcompliant, already deployed devices MII interface support Provides flexible options for the 50MHz RMII reference clock as the input or output Back-to-back mode supportt Allows creation of low-cost 100Mbps copper repeater using only two KSZ8081 PHY MDC/MDIO management interface for PHY register configuration Allows the MAC processor complete access to the KSZ8081 control and status registers On-chip termination resistors for the differential pairs On-chip termination (eliminating four external resistors) simplifies PCB design, reduces system BOM, and improves overall signal integrity and EMI emission On-chip regulator Reduces BOM cost by eliminating external regulator for 1.2V core HP Auto MDI/MDI-X to reliably detect and correct straight-through and crossover cable connections with disable and enable option Easy-to-use feature eliminates the need for crossover cable, which reduces installation costs Multiple loopback options Allows diagnostic testing for RMII and line side data paths Single 3.3V power supply with VDD I/O options for 1.8V, 2.5V, or 3.3V Enables low-power and flexible I/O design Power-down and power-saving modes Optimizes power consumption based on the status of the link or the device LinkMD TDR-based cable diagnostics Identifies common cable faults in production testing and in deployment Contact Micrel, Inc. Location Address Telephone Fax Corporate HQ 2180 Fortune Drive San Jose, CA 95131 USA +1 408 944 0800 +1 408 944 0970 Western USA 2180 Fortune Drive San Jose, CA 95131 USA +1 408 944 0800 +1 408 944 0970 Central USA 2425 N. Central Express Way, Suite 351 Richardson, TX 75080 USA +1 972 393 2533 +1 972 393 2370 Eastern USA 93 Branch Street Medford, NJ 08055 USA +1 609 654 0078 +1 609 654 0989 Latin America 2425 N. Central Express Way, Suite 351 Richardson, TX 75080 USA +1 972 393 2533 +1 972 393 2370 Hong Kong Unit 213-215, Photonics Centre, #2 Science Park East Ave., Hong Kong Science Park Shatin, N.T., Hong Kong +852 2886 8839 +852 2886 8851 China Rm 601, Bldg B, Int’l Chamber of Commerce Mansion, Fuhua Rd 1 Futian Dist Shenzhen, P.R. China 518048 +86 755 8302 7618 +86 755 8302 7637 Japan Queens Tower 14F, 2-3-1, Minatomirai, Nishi-ku, Yokohama-shi Kanagawa 220-6014, Japan +81 45 224 6616 +81 45 224 6716 Korea 4F Manzo 2 Building, 198-47, Gungnae-dong, Bundang-ku, Seongnam-City Kyungki-do, 463-470, Korea +82 2 538 2380 +82 2 538 2381 Singapore/India 7500A Beach Road, #07-324 The Plaza Singapore 199591 +65 6291 1318 +65 6291 1332 Taiwan 4F, No. 43 Lane 188, Rueiguang Road, Nei-Hu District Taipei 11491 Taiwan, R.O.C +886 2 8751 0600 +886 2 8751 0746 UK/EMEA 1st Floor, 3 Lockside Place, Mill Lane, Newbury, Berks United Kingdom RG14 5QS +44 1635 524455 +44 1635 524466 France/Southern Europe Les Laurentides - Batiment Ontario, 3 Avenue du Quebec 91140 Villebon sur Yvette, France +33 0 1 6092 4190 +33 0 1 6092 4189 1.800.944.0800 Tel 1.408.474.1000 Fax www.micrel.com © 2013 Micrel, Inc. All rights reserved. Micrel and LinkMD are registered trademarks of Micrel, Inc. 01/11/2013