DP83846AVHG

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The DP83846AVHG is a physical layer integrated circuit (IC) developed by National Semiconductor Corporation. It is a popular choice for various networking applications from Ethernet to Wi-Fi due to its highly integrated architecture and low power consumption. This article will explore the application fields of the DP83846AVHG and analyze its working principle.

Application Fields

The DP83846AVHG is a single-port, low-power physical layer device designed to meet the requirements of high-speed data communication networks. It is designed for use with 10/100 Mb/s Ethernet and can also be used for 802.11a/b/g/n. It provides excellent impedance matching and cable loss characteristics, which helps reduce cost and ensure reliable data transmission. The DP83846AVHG is used in a variety of applications such as home and office networks, surveillance systems, and industrial automation systems.

The device is also used in consumer electronics devices such as smart TVs, media players, and streaming devices. This is due to its low power consumption and high reliability. Additionally, the device supports multiple protocols such as Ethernet, USB, Wi-Fi, Bluetooth, and ZigBee, making it suitable for a variety of applications.

Working Principle

The DP83846AVHG is an Ethernet transceiver and supports triple speed data rates up to 200Mbps (100Mbps full duplex). It is designed to provide a highly integrated solution for 10Base-T and 100Base-TX Ethernet applications and is implemented using an advanced CMOS process technology. The device enables the controller to perform the physical layer operations such as Ethernet packet processing, error detection, and bit manipulation.

The transceiver contains a physical coding sub-layer (PCS) and an encapsulator/decapsulator (ENCAP/DECAP). The PCS is used to perform basic operations such as encoding and decoding of packets, error detection, and bit manipulation. The ENCAP/DECAP is used to frame and deframe Ethernet packets and extract information from them. The device also contains a packet receive function to process received packets and a transmit FIFO for buffering transmissions. Additionally, the device contains an embedded SPI (Serial Peripheral Interface) for communication with a microcontroller.

The device supports two operating modes, the ‘MDIO’ and the ‘MDI’ mode. The MDIO mode allows the device to be managed by an external management entity. The MDI mode allows the device to be accessed directly by the external controller. The device supports Ethernet half-duplex and full-duplex modes and allows for flow control and error correction.

The DP83846AVHG is a highly integrated single-port transceiver and is an ideal choice for low-power Ethernet physical layer applications. It supports 10/100 Ethernet and 802.11a/b/g/n and is used in a variety of automotive, industrial, and consumer electronics applications.

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