KSZ8091MNX/KSZ8091RNB 10Base-T/100Base-TX Physical Layer Transceiver Data Sheet Rev. 1.0 General Description Features The KSZ8091 is a single-supply 10Base-T/100Base-TX Single-chip 10Base-T/100Base-TX IEEE 802.3 Ethernet physical-layer transceiver for transmission and compliant Ethernet transceiver reception of data over standard CAT-5 unshielded twisted MII interface support (KSZ8091MNX) pair (UTP) cable. RMII v1.2 Interface support with a 50MHz reference The KSZ8091 is a highly-integrated PHY solution. It reduces clock output to MAC, and an option to input a 50MHz board cost and simplifies board layout by using on-chip reference clock (KSZ8091RNB) termination resistors for the differential pairs, by integrating a Back-to-back mode support for a 100Mbps copper low-noise regulator to supply the 1.2V core, and by offering a repeater flexible 1.8/2.5/3.3V digital I/O interface. MDC/MDIO management interface for PHY register The KSZ8091MNX offers the Media Independent Interface configuration (MII) and the KSZ8091RNB offers the Reduced Media Programmable interrupt output Independent Interface (RMII) for direct connection with LED outputs for link and activity status indication, plus MII/RMII-compliant Ethernet MAC processors and switches. speed indication for KSZ8091RNB Energy Efficient Ethernet (EEE) provides further power On-chip termination resistors for the differential pairs saving during idle traffic periods and Wake-on-LAN (WOL) provides a mechanism for the KSZ8091 to wake up a Baseline wander correction system that is in standby power mode. HP Auto MDI/MDI-X to reliably detect and correct The KSZ8091 provides diagnostic features to facilitate straight-through and crossover cable connections with system bring-up and debugging in production testing and disable and enable option in product deployment. Parametric NAND tree support Auto-negotiation to automatically select the highest link- enables fault detection between KSZ8091 I/Os and the up speed (10/100Mbps) and duplex (half/full) board. Micrel LinkMD TDR-based cable diagnostics Energy Efficient Ethernet (EEE) support with low-power identify faulty copper cabling. idle (LPI) mode and clock stoppage (MII version only) The KSZ8091MNX and KSZ8091RNB are available in 32- for 100Base-TX and transmit amplitude reduction with pin, lead-free QFN packages (see Ordering Information). 10Base-Te option Wake-on-LAN (WOL) support with either magic packet, link status change, or robust custom-packet detection Functional Diagram LinkMD is a registered trademark of Micrel, Inc. Micrel Inc. 2180 Fortune Drive San Jose, CA 95131 USA tel +1 (408) 944-0800 fax + 1 (408) 474-1000 Micrel, Inc. KSZ8091MNX/KSZ8091RNB Features (Continued) Applications Power-down and power-saving modes Game console LinkMD TDR-based cable diagnostics to identify faulty IP phone copper cabling IP set-top box Parametric NAND Tree support for fault detection IP TV between chip I/Os and the board LOM Loopback modes for diagnostics Printer Single 3.3V power supply with VDD I/O options for 1.8V, 2.5V, or 3.3V Built-in 1.2V regulator for core Available in 32-pin (5mm x 5mm) QFN package Ordering Information Temperature Lead Wire Part Number Package Description Range Finish Bonding MII, EEE and WOL Support, Commercial KSZ8091MNXCA 0C to 70C 32-Pin QFN Pb-Free Gold Temperature, Gold Wire Bonding MII, EEE and WOL Support, Industrial (1) KSZ8091MNXIA 32-Pin QFN Pb-Free Gold 40C to 85C Temperature, Gold Wire Bonding RMII with 25MHz crystal/clock input and 50MHz RMII REF CLK output (power-up default), KSZ8091RNBCA 0C to 70C 32-Pin QFN Pb-Free Gold EEE and WOL Support, Commercial Temperature, Gold Wire Bonding RMII with 25MHz crystal/clock input and 50MHz RMII REF CLK output (power-up default), (1) KSZ8091RNBIA 40C to 85C 32-Pin QFN Pb-Free Gold EEE and WOL Support, Industrial Temperature, Gold Wire Bonding KSZ8091MNX Evaluation Board KSZ8091MNX-EVAL 0C to 70C 32-Pin QFN Pb-Free (Mounted with KSZ8091MNX device in commercial temperature) KSZ8091RNB Evaluation Board KSZ8091RNB-EVAL 0C to 70C 32-Pin QFN Pb-Free (Mounted with KSZ8091RNB device in commercial temperature) Note: 1. Contact factory for lead time. February 2013 2 M9999-021513-1.0