Microchip's LAN9355/LAN9355i is a high-performance, small-footprint, full-featured 3-port managed Ethernet switch. This device is application-optimized for consumer, embedded and Industrial electronic designs which require a highly integrated, cost effective device with switching functionality, flexibility and ease of integration.
Featuring the industry's smallest form factor 3-port switch, the LAN9355/9355i supports compact PCB design and MII/RMII/Turbo MII (Media Independent, Reduced Media Independent and Turbo Media Independent Interfaces). This device supports Turbo MII mode to accomplish network speeds up to 200 Mbps. The virtual PHY feature mimics a single PHY connection through the MII/RMII/Turbo MII interface to the host SoC, which can reduce software development time. This feature also allows system designers to swap the single PHY and Ethernet switch to create multiple SKUs from the same software driver.

IEEE 1588v2 is supported via the integrated IEEE 1588v2 hardware time stamp unit, which supports end-to-end and peer-to-peer transparent  clocks. The LAN9354 complies with the IEEE 802.3 (full/half-duplex 10BASE-T and 100BASE-TX) Ethernet protocol, IEEE 802.3az Energy Efficient Ethernet (EEE) (100Mbps only), and 802.1D/802.1Q network management protocol specifications, enabling compatibility with industry standard Ethernet and Fast Ethernet applications. 100BASE-FX is
supported via an external fiber transceiver.

The LAN9355/9355i switch combines all of the functions of a 10/100 system, including the switch fabric, packet buffers, buffer management, MACs, PHY transceivers and optional serial management functions. Both devices comply with IEEE 802.3 10BASE-T and 100BASE-TX Ethernet protocol specifications, enabling compatibility with industry standard Ethernet and Fast Ethernet applications. Supports Fiber Interface through SFP and SFF Physical medium

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Highlights

  IEEE 1588-2008 hardware time stamping unit

  IEEE 802.3az Energy Efficient Ethernet

  Wake On LAN

  Cable Diagnostics

  High-performance, full-featured 3-port switches with per-port IEEE 802.1Q VLAN support (up to 16 VLAN groups) test

  IGMP v1/v2 monitoring for multicast packet filtering

  Up to 200 Mbps network speed via a Turbo MII interface

  Optional EEPROM or external CPU serial management support via an I2C™ interface

   Virtual PHY feature simplifies softwar development by mimicking multiple switch ports as a single-port PHY

  Integrated regulators require a single 3.3V supply

  42 per-port MIB counters for efficient network management

  Supports Fiber Interface through SFP and SFF Physical medium

  Industrial temperature (-40° to 85°C) options available (LAN9353i)

       Package options:

  LAN9355: 12x12mm, 88-pin QFN package for dual MII/RMII/Turbo MII

  LAN9355: 12x12mm, 80-pin VTQFP-EP package for dual MII/RMII/Turbo MII

Target Applications

  Cable, Satellite, and IP Set-top Boxes (STBs)

  Digital Televisions (DTVs)

  Digital/Personal Video Recorders (DVRs/PVRs)

  VoIP/Video Phone Systems

  Home Gateways/Consumer Audio/Video

  Security and Surveillance

  Building Automation      

  Test/Measurement Equipment

   Industrial Automation and Control