KSZ9031MNX Gigabit Ethernet Transceiver with GMII/MII Support Micrel Inc., is a leading global manufacturer Description The KSZ9031MNX is a completely integrated triple-speed (10Base-T/100Base-TX/1000Base-T) Ethernet physicallayer transceiver for transmission and reception of data on standard CAT-5 unshielded twisted pair (UTP) cable. The KSZ9031MNX offers the industry-standard GMII/MII (Gigabit Media Independent Interface / Media Independent Interface) for connection to GMII/MII MACs in Gigabit Ethernet processors and switches for data transfer at 1000Mbps or 10/100Mbps. The KSZ9031MNX reduces board cost and simplifies board layout by using on-chip termination resistors for the four differential pairs and by integrating an LDO controller to drive a low-cost MOSFET to supply the 1.2V core. The KSZ9031MNX offers diagnostic features to facilitate system bring-up and debugging in production testing and in product deployment. Parametric NAND tree support enables fault detection between KSZ9031MNX I/Os and the board. The LinkMD® TDR-based cable diagnostic identifies faulty copper cabling. Remote and local loopback functions verify analog and digital data paths. Applications • • • • • • GEON ONU router SOHO media center Voice-over-Internet Protocol (VoIP) gateway Network attached storage Laser printers and projectors Wired/wireless Gigabit SOHO/SMB router media converter • VPN/firewall-based SMB/SME router • Gigabit Ethernet LAN on motherboard • Integrated broadband CPE (ADSL/VDSL/ FTTH) router For more information, contact your local Micrel sales representative, or visit Micrel at: www.micrel.com of IC solutions for the worldwide analog, Ethernet and high bandwidth markets. The Company’s advanced power semiconductors; high performance communication, clock management, Ethernet switch and physical layer transceiver ICs. Company customers include leading manufacturers of enterprise, consumer, industrial, automotive, mobile, and CONFIGURATIONS PMA RX1000 PCS1000 PMA RX10 GMII/MII INTERFACE PCS10 AUTONEGOTIATION computer products. the-art wafer fabrication facilities are located in San Jose, CA with regional sales and support offices and advanced technology design centers situated throughout the distributors and reps worldwide. PMA TX10/100/1000 PCS100 telecommunications, Corporation headquarters and state-of- www.micrel.com PMA RX100 and Company maintains an extensive network of Block Diagram MEDIA INTERFACE include analog Americas, Europe and Asia. In addition, the The KSZ9031MNX is available in a 64-pin, lead-free QFN package. CLOCK RESET products mixed-signal, LED DRIVERS KSZ9031MNX - Gigabit Ethernet Transceiver with GMII/MII Support Key Features Benefits GMII/MII standard interface with 3.3V/2.5V/1.8V tolerant I/Os Standard compliant MAC interface supports direct connection to MACs in Ethernet processors and switches at 10/100/1000Mbps data speeds. Energy Efficient Ethernet (EEE) support with low-power idle (LPI) mode and clock stoppage for 100Base TX/ 1000Base-T and transmit amplitude reduction with 10Base-Te option EEE saves power by keeping the voltage on the Ethernet cable at approximately 0V during periods of no traffic. The traffic can resume without any packet loss within 30µs at 100BT and 16µs at 1000BT. Energy-detect power-down mode for reduced power consumption when the EDPD mode is used to reduce the transceiver power consumption when cable is not attached the cable is unplugged. Wake-on-LAN (WOL) support with robust custom-packet detection WOL mechanism allows many devices in a system to be in sleep until a magic packet from the system awakens them, thus keeping the total systems power level at a reduced level. On-chip termination resistors for the differential pairs On-chip termination (eliminating 8 external resistors) not only simplifies PCB design and reduces system BOM, but also improves overall signal integrity and EMI emission. On-chip LDO controller to support single 3.3V supply operation – requires only one external FET to generate 1.2V for the core Integration of a LDO controller permits a low-cost MOSFET to supply the 1.2V core, which reduces board cost and simplifies board layout. LinkMD TDR-based cable diagnostic to identify faulty copper cabling Built-in LinkMD diagnostics helps identification of common cabling problems, including those not addressed by IEEE. It simplifies network deployment and reduces network downtime. Automatic MDI/MDI-X crossover to detect and correct pair swap at all speeds of operation Auto-MDI/MDIX eliminates the need for cross-over cable, thus reduces installation costs. Easy to use. 125MHz reference clock output 125MHz clock output to the MAC eliminates external 125MHz oscillator and lowers the BOM cost. MDC/MDIO MANAGEMENT KSZ9031MNX MAGNETICS GMII/MII 10/100/1000Mbps GMII/MII ETHERNET MAC ON-CHIP TERMINATION RESISTORS Functional Diagram RJ-45 CONNECTOR MEDIA TYPES 10Base-T 100Base-TX 1000Base-T LDO CONTROLLER VIN 3.3VA VOUT 1.2V (FOR CORE VOLTAGES) 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. 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