LAN89303 High-Performance, Three Port, 10/100 Managed Ethernet Switch with MII/RMII for Automotive Applications Summary The LAN89303 is a full-featured, three-port, 10/100 managed Ethernet switch designed for embedded applications where performance, flexibility, ease of integration and system cost control are required. It combines all the functions of a 10/100 switch system, including the switch fabric, packet buffers, buffer manager, Media Access Controllers (MACs), PHY transceivers and serial management. The LAN89303 complies with the IEEE 802.3 (full/half-duplex 10Base-T and 100Base-TX) Ethernet protocol specification and 802.1D/802.1Q network management protocol specifications, enabling compatibility with industry-standard Ethernet and Fast Ethernet applications. The LAN89303s performance, features and small size make it well-suited for a wide variety of automotive applications including diagnostics, gateway services and in-vehicle engineering development. TrueAuto TrueAuto is Microchips automotive quality process. It has proven its ability to deliver leading-edge quality and services for IC device products to fulfill the needs of the most demanding automotive customers. TrueAuto is a proven total automotive-grade quality approach. TrueAuto Highlights IC device robustness begins with Microchips design for Designed, fabricated, tested, characterized and reliability techniques within the silicon IC itself: automotive- qualified for automotive applications grade robustness and testability are designed into the TrueAuto design, service and support IC. Once available in silicon, the IC is fully-characterized Three-port switch provides VLAN, QoS packet and qualified over a multitude of operating parameters prioritization, rate limiting, IGMP monitoring and to prove quality under the harshest conditions. In this, management functions Microchips TrueAuto approach significantly exceeds the usual automotive reliability standards and customer- IEEE 802.3 and 802.1D/802.1Q-compliant specific requirements and goes far beyond the stress tests 10Base-T/100Base-TX and HP Auto-MDIX support prescribed by the AEC-Q100 specifications. During the Up to 200 Mbit/s via Turbo MII fabrication of TrueAuto products, extensive technologies Serial management and processes, such as enhanced monitors are used in 2 I C (slave) access to all internal registers order to continuously drive improvements in accordance MIIM (MDIO) access to PHY-related registers with Microchips zero defects per million (DPM) goals. SMI (extended MIIM) access to all internal registers Unique virtual PHY feature simplifies software Applications development by mimicking the multiple switch ports as Diagnostic interface for dealership service bay single port PHY Fast software download interface with an On-board Single 3.3V power supply Diagnostic (OBD) connector 56-pin (8 8 mm) QFN, RoHS-compliant package Gateway service interface for dealership, aftermarket Temperature range: 40 to +85C and repair shop In-vehicle engineering development interface Vehicle manufacturing test interface for production plant assembly line Legislated emissions check and/or safety inspectionsPort 0 Dynamic QoS 4 Queues Dynamic Dynamic QoS QoS 4 Queues 4 Queues Port 1 Port 2 Internal Block Overview MII/Turbo MII to PHY or MII/RMII/Turbo MII to MAC MDIO Virtual MDIO PHY Registers Ethernet 10/100 MII Data 10/100 10/100 MDIO MII To Optional PHY Path Registers MAC MAC SMI Master PHY Management MII Mode MDIO Interface (PMI) MUX Mode Configuation Search Straps Switch Engine Mode Engine Configuration MDIO SMI (Slave) Frame Straps Controller Buffer Manager Buffers MII 10/100 Switch Register 2 Ethernet I C Slave PHY Registers 10/100 Registers Access Controller (CSRs) MUX MAC MDIO Switch Fabric Switch EEPROM Loader Registers (CSRs) GP Timer To Optional EEPROM System System Clocks/ GPIO/LED 2 2 (via I C Master) Interrupt Reset/PME I C EEPROM Controller Free-Run Controller 2 Controller Controller I C (Master) To Optional CPU Clk LAN89303 Serial Management 2 (via I C Slave) To optional IRQ GPIOs/LEDs External 25 MHz Crystal Ordering Information The LAN89303 is available as: Order Number LAN89303AM Tray B10281 LAN89303AMR Tape and Reel B10280 www.microchip.com/ethernet Visit our web site for additional product information and to locate your local sales office. MicrochipTechnolog yInc.2355W.ChandlerBlvd.Chandler,AZ85224-6199 Information subject to change. The Microchip name and logo and the Microchip logo are registered trademarks of Microchip Technology Incorporated in the U.S.A. and other countries. All other trademarks mentioned herein are property of their respective companies. 2013, Microchip Technology Incorporated. All Rights Reserved. Printed in the U.S.A. 12/13 DS00001649A