KSZ8091MNX/KSZ8091RNB 10Base-T/100Base-TX Physical Layer Transceiver Description Micrel Inc., is a leading global manufacturer The KSZ8091 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 KSZ8091 is a highly-integrated PHY 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 a flexible 1.8/2.5/3.3V digital I/O interface. The KSZ8091MNX offers the Media Independent Interface (MII) and the KSZ8091RNB offers the Reduced Media Independent Interface (RMII) for direct connection with MII/ RMII-compliant Ethernet MAC processors and switches. Applications of IC solutions for the worldwide analog, * * * * * * Ethernet and high bandwidth markets. Game console IP phone IP set-top box IP TV LOM Printer The For more information, contact your local Micrel sales representative, or visit Micrel at: www.micrel.com REF_CLK PME_N (SYSTEM POWER CIRCUIT) XI XO 25MHz XTAL 22pF 22pF manufacturers of enterprise, consumer, 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 Americas, Europe and Asia. In addition, the Company maintains an extensive network of distributors and reps worldwide. www.micrel.com MAGNETICS ON-CHIP TERMINATION RESISTORS 50MHz (KSZ8091RNB) ICs. Company customers include leading automotive, Functional Diagram KSZ8091MNX/ KSZ8091RNB and switch and physical layer transceiver industrial, The KSZ8091MNX and KSZ8091RNB are available in 32pin, lead-free QFN packages. MII/RMII include analog communication, clock management, Ethernet The KSZ8091 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 KSZ8091 I/Os and the board. Micrel LinkMD(R) TDR-based cable diagnostics identify faulty copper cabling. 10/100Mbps MII/RMII MAC products mixed-signal, power semiconductors; high performance Energy Efficient Ethernet (EEE) provides further power saving during idle traffic periods and Wake-on-LAN (WOL) provides a mechanism for the KSZ8091 to wake up a system that is in standby power mode. MDC/MDIO MANAGEMENT Company's advanced RJ-45 CONNECTOR MEDIA TYPES: 10BASE-T 100BASE-TX KSZ8091MNX/KSZ8091RNB - 10Base-T/100Base-TX Physical Layer Transceiver 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 (KSZ8081MNX) and RMII v1.2 Interface support with a 50MHz Provides flexible options for the 50MHz RMII reference clock as the input reference clock output to MAC, and an option to input a 50MHz reference or output clock (KSZ8081RNB) Back-to-back mode support Allows creation of low-cost 100Mbps copper repeater using only two KSZ8091 PHYs MDC/MDIO management interface for PHY register configuration Allows the MAC processor complete access to the KSZ8091 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 Energy Efficient Ethernet (EEE) support with low-power idle (LPI) mode and clock stoppage (MII version only) for 100Base TX and transmit amplitude Saves greater than 50% power in idle mode reduction with 10Base-Te option Wake-on-LAN (WOL) support with either magic packet, link status change, or robust custom-packet detection Provides a mechanism to wake up a system that is in standby power mode, saving total system power consumption 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 Hong Kong Unit 213-215, Photonics Centre, #2 Science Park East Ave., Hong Kong Science Park Shatin, N.T., Hong Kong +1 972 393 2533 +1 972 393 2370 +852 2886 8839 +852 2886 8851 China No. 2001 & 2002, 20/F, Excellence Times Plaza, 4068 Yitian Road, Futian Dist Shenzhen, P.R. 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Micrel and LinkMD are registered trademarks of Micrel, Inc. 09/03/2013 Mouser Electronics Authorized Distributor Click to View Pricing, Inventory, Delivery & Lifecycle Information: Micrel: KSZ8091RNBCA