DP83910AV/NOPB

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DP83910AV/NOPB is an Ethernet PHY chip, providing an industry-standard 10Mbps/100Mbps network interface for existing and next-generation networking devices.

DP83910AV/NOPB is designed to support data rates between 10Mbps and 100Mbps. It combines both physical layer and data link layer functions, providing a complete 2-layer solution on a single chip, including: 10BASE-T, 100BASE-TX (IEEE 802.3 compliant) and MII interfaces. Support for both full-duplex and half-duplex modes is provided (with automatic crossover for each mode).

The DP83910AV/NOPB application field can be found in various industries, including wired home networks, small office/home office applications, automotive, automotive OBD-II, aerospace and defense applications. It can also be used in many other areas, such as industrial/medical/building automation, security/monitoring systems and smart home/IoT applications.

In terms of working principle, the DP83910AV/NOPB chip supports both auto-negotiation (10BASE-T/100BASE-TX) and parallel detection (10BASE-T only). When auto-negotiation is enabled, the PHY will negotiate a valid data rate between 10Mbps and 100Mbps. The connected Ethernet devices must also support auto-negotiation. Alternatively, when parallel detection is enabled, the PHY will determine the speed automatically by inspecting the incoming signals from the line.

At the physical layer, the DP83910AV/NOPB supports both 10BASE-T and 100BASE-TX media access technologies. The PHY is capable of transmitting and receiving data at 10Mbps or 100Mbps depending on the negotiated settings. The PHY also incorporates a collision detector to detect transmission collisions in full-duplex mode, and a 4B/5B data scrambler for improved reliability.

At the data link layer, the PHY performs the following functions: frame format conversion (both 10BASE-T and 100BASE-TX frame formats are supported); error detection and frame validating; and flow control processing (pause frame support is provided). In addition, the PHY supports a wide range of control and status/status/monitoring functions, such as loopback testing and link status monitoring.

In summary, the DP83910AV/NOPB is a high-performance Ethernet PHY chip with both 10BASE-T and 100BASE-TX interfaces, suitable for a wide range of applications. This chip provides a complete 2-layer solution for easy integration into existing networks, and supports auto-negotiation and parallel detection for speed selection.

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