DP83846AVHG/NOPB

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Introduction

DP83846AVHG/NOPB is a type of network interface controller which supports 10/100Mbps Ethernet over high-speed fibre and copper links. It is a single-chip transceiver solution, including a media access controller (MAC), physical layer device (PHY) and a bus interface unit (BIU). It is designed to provide both cost-effective and robust Gigabit performance over standard 1-lb category 5 twisted pair copper media. The DP83846AVHG/NOPB is an advanced high-speed (HS) low-power (LP) Ethernet solution for mobile, wireless and desktop applications. Its unique design combines the power savings of high-speed operation, coupled with the added flexibility of low-power mode operation, reducing the average power consumed by Ethernet links.

Application Field

The DP83846AVHG/NOPB is an ideal high-speed, low-power network connection solution for many networking applications including data centers, VoIP, virtualization, video streaming, and multimedia systems. It provides full 10/100/1000 Mbps performance and is ideal for applications that require high-speed data communications and low power usage such as server and storage, enterprise networking, and optical networking.

The DP83846AVHG/NOPB is also suitable for applications where the output signal must be compliant with the IEEE 802.3ab Gigabit Ethernet standard and be able to support a variety of applications requiring high data transfer speeds such as multimedia, Gigabit Ethernet switches, and fibre channel switches.

Working Principle

The DP83846AVHG/NOPB is a single-chip transceiver solution which combines a media access controller (MAC), physical layer device (PHY) and a bus interface unit (BIU). The MAC is responsible for data packet transmission and reception and for performing address recognition and filtering. It supports full-duplex operation at up to 1000 Mbps on a single twisted pair cable or multiple pairs of HSSD (high-speed switched digital) cables.

The physical layer device (PHY) of the DP83846AVHG/NOPB transceiver solution performs the encoding and decoding of information on the electrical signals and performs the physical layer operations such as scrambling, descrambling, formatting and Error detection. These operations are performed over the basic mode as described in IEEE802.3ab. The PHY also works with the MAC to provide link auto-negotiation.

The third component in the solution, the bus interface unit (BIU) is responsible for interfacing with the system bus. It provides an interface to the control signals and data path to the external memory and packet memory. It also supports several interface signals, such as MDC (Management Data Clock), MDIO (Management Data Input/Output) and 2 MAC control registers to provide external control of the chip.

Conclusion

The DP83846AVHG/NOPB is a single-chip transceiver solution for 10/100/1000Mbps Ethernet applications over high-speed fibre and copper links. It combines a media access controller (MAC), physical layer device (PHY), and a bus interface unit (BIU). It is an ideal high-speed, low-power solution for many networking applications including data centers, VoIP, virtualization, video streaming, and multimedia systems. The DP83846AVHG/NOPB is compliant with the IEEE 802.3ab Gigabit Ethernet standard and is capable of supporting various applications requiring high data transfer speeds.

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