LAN9221-ABZJ

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The LAN9221-ABZJ is an IC (Integrated Circuit) controller under the category of Interfaces. It is developed by Microchip Technology Inc and is specifically designed for small form factor applications and offers industry-leading power efficiency. The LAN9221-ABZJ offers several features for networking applications, including a Built-in 10/100 Ethernet PHY, a 10/100 Mii/RMII Ethernet MAC, a 4Kbyte Tx FIFO buffer and an 8Kbyte Rx FIFO buffer. In addition, the LAN9221-ABZJ has integrated physical layer device support for both 10BaseT and 100BaseT(X) Ethernet technologies, allowing for dual speed connection.

The basic application fields of the LAN9221-ABZJ are on automotive infotainment systems, industrial automation systems and medical equipment. For example, its integration of 10/100 Ethernet PHY and 10/100 Mii/RMII Ethernet MAC makes it ideal for use in in-vehicle-infotainment, content delivery and remote diagnostics applications. In industrial applications, the controller is used for communication systems, industrial automation and commercial security. And the richness of features makes the LAN9221-ABZJ are also suitable for medical instruments, allowing for fast data synchronization with hospital’s electronic health records (EHR). Moreover, the LAN9221-ABZJ also has the ability to monitor temperature, power and voltage values.

The working principle of the LAN9221-ABZJ is based on the 10/100 Ethernet protocol. It follows the IEEE standard 802.3, which defines the specifics of how two or more Ethernet devices will communicate with each other, so as to guarantee two or more stations can send and receive data correctly. The Ethernet PHY integrated in the controller handles physical layer data conversion, while the 10/100 Ethernet MAC is responsible for data framing, addressing and CRC checks. Furthermore, the LAN9221-ABZJ also supports 4-level cell and fixed rate operation compliant with 802.3/802.3u/802.3ab for full 10/100Mbps bandwidth usage.

The controller offers extremely low power consumption. When compared with any similar products in the market, it has less than 1uA of low power sleep mode, allowing for greater flexibility in the design of mobile and battery powered applications. It also benefits from a very low on-chip power management scheme, reducing power consumption by up to 75%, compared to similar controller products. Another great feature of the controller is its high level of integration. With built-in functions like 32-bit CRC checksum, FCS auto-generation and auto-negotiation, the controller eliminates the need of external components, reducing the overall product cost.

The LAN9221-ABZJ is especially designed for Ethernet applications that require low-power, low-cost, and compactness. Its integration of 10/100 Ethernet PHY, Ethernet MAC and 4Kbyte Tx FIFO buffer, 8Kbyte Rx FIFO buffer can handle applications of most systems. It can be used in automotive infotainment systems, industrial automation systems and medical equipment, monitoring temperature, power and voltage values. The working principle of the controller is based on IEEE standard 802.3 and effectively reduce power consumption, making it a great choice for applications with stringent power specifications.

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