KSZ8091RNBCA

KSZ8091MNX/KSZ8091RNB 10Base-T/100Base-TX Physical Layer Transceiver Revision 1.2 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 speed indication for KSZ8091RNB switches. On-chip termination resistors for the differential pairs Energy Efficient Ethernet (EEE) provides further power Baseline wander correction saving during idle traffic periods and Wake-on-LAN (WOL) HP Auto MDI/MDI-X to reliably detect and correct provides a mechanism for the KSZ8091 to wake up a straight-through and crossover cable connections with system that is in standby power mode. disable and enable option The KSZ8091 provides diagnostic features to facilitate Auto-negotiation to automatically select the highest link- system bring-up and debugging in production testing and up speed (10/100Mbps) and duplex (half/full) in product deployment. Parametric NAND tree support Energy Efficient Ethernet (EEE) support with low-power enables fault detection between KSZ8091 I/Os and the idle (LPI) mode and clock stoppage (MII version only) board. Micrel LinkMD TDR-based cable diagnostics for 100Base-TX and transmit amplitude reduction with identify faulty copper cabling. 10Base-Te option The KSZ8091MNX and KSZ8091RNB are available in 32- Wake-on-LAN (WOL) support with either magic packet, pin, lead-free QFN packages (see Ordering Information). link status change, or robust custom-packet detection HBM ESD rating (6kV) Datasheets and support documentation are available on website at: www.micrel.com. 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 5mm) QFN package Ordering Information Temperature Lead Part Number Package Description Range Finish MII, EEE and WoL Support, Commercial KSZ8091MNXCA 0C to +70C 32-Pin QFN Pb-Free Temperature. (1) KSZ8091MNXIA 40C to +85C 32-Pin QFN Pb-Free MII, EEE and WoL Support, Industrial Temperature. RMII with 25MHz crystal/clock input and 50MHz KSZ8091RNBCA 0C to +70C 32-Pin QFN Pb-Free RMII REF CLK output (power-up default), EEE and WoL Support, Commercial Temperature. RMII with 25MHz crystal/clock input and 50MHz (1) KSZ8091RNBIA 40C to +85C 32-Pin QFN Pb-Free RMII REF CLK output (power-up default), EEE and WoL Support, Industrial Temperature. KSZ8091MNX Evaluation Board KSZ8091MNX-EVAL (Mounted with KSZ8091MNX device in commercial temperature) KSZ8091RNB Evaluation Board KSZ8091RNB-EVAL (Mounted with KSZ8091RNB device in commercial temperature) Note: 1. Contact factory for lead time. Revision 1.2 August 31, 2015 2