LAN9217-MT

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The LAN9217-MT is an Ethernet controller designed by SMSC and integrates high-speed integrated Ethernet Controller along with a Media Access Controller in a single chip. It provides a cost-effective solution for small and medium enterprises to set up Ethernet connections in their networks. It supports access power capabilities and enables a variety of peripheral connection options.

The LAN9217-MT is categorized under Interface-Controllers and enables the communication, management and control of individual equipment and devices within a larger network. This Ethernet controller operates through a hardware protocol and follows the Media Access Control (MAC) Layer standards set by IEEE 802.3 for Ethernet networks. This chip is ideal for medium and large home network applications as it supports data transfer speeds of up to 10 /100 Mbps.

The LAN9217-MT includes the following components which are the Media Access Controller (MAC) unit and the Integrated High-Speed Ethernet Controller (HSE). The MAC unit is responsible for handling the frame traffic on the Ethernet networks and translating the data frames from the layer 2 protocol into physical bitstreams for transmission. The HSE controls numerous aspects including buffer management, auto-negotiation, and configure/monitor the network ports. It also provides the interface between the chip and the Physical Layer devices.

The LAN9217-MT supports several features that are configurable to a variety of application fields.The device supports four port Ethernet, allowing the connection of multiple devices to a single LAN. It also supports Wake-on-LAN, allowing users to remotely wake up the connected ports from any location on the network. Additionally, the chip supports auto-negotiation, allowing for the connection of devices running at different speeds and different Ethernet protocols.

The working principle of the LAN9217-MT revolves around two external PHYs which is responsible for the physical layer of communication, and the internal MAC which is responsible for the MAC layer. The MAC unit handles the signaling and data frames and provides the interface between the upper and lower layers. It translates the data frames from the upper layers into physical bit-streams and performs the MAC functions.

The PHYs receive the data frames from the MAC and convert them into signals that can be sent over a network. It also checks for signal integrity and signal quality and can detect errors or losses in transmission. Once the signal reaches the other end, the PHYs convert it back into a data frame for the MAC to process.

Overall, the LAN9217-MT is an affordable and efficient Ethernet controller, suitable for medium and large home network applications. It provides support for multiple ports and also supports Wake-on-LAN and auto-negotiation for various speeds and protocols. The combination of the PHYs and the internal MAC unit allows for the successful transfer of data frames across multiple networks. With more functionality and dependability, the LAN9217-MT is the ideal choice for any enterprise looking to set up Ethernet connections in their networks.

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