Intel® IXF1104 4-Port Gigabit Ethernet Media Access Controller

When configured for fiber mode, the full set of Optical Module interface control and status signals is presented through re-use of GMII signals on a per-port basis (see Table 4.5 “Multiplexed Ball Connections” on page 58). Fiber mode supports only full-duplex Gigabit operation.

5.1.4.1Fiber Auto-Negotiation

Auto-negotiation is performed by using the “TX Config Word ($ Port_Index + 0x17)", “RX Config Word ($ Port_Index + 0x16)", and “Diverse Config Write ($ Port_Index + 0x18)". When autoneg_enable (“Diverse Config Write ($ Port_Index + 0x18)") is set, the IXF1104 MAC performs hardware-definedauto-negotiation with the “TX Config Word ($ Port_Index + 0x17)" used as an “Auto-Negotiation Advertisement ($ Port Index + 0x64)" and the “RX Config Word ($ Port_Index + 0x16)" used as an “Auto-Negotiation Link Partner Base Page Ability ($ Port Index + 0x65)".

Note: While the MAC supports auto-negotiation functions, the IXF1104 MAC does not automatically configure the MAC or other device blocks to be consistent with the auto-negotiation results. This configuration is done by the user and system software.

5.1.4.2Determining If Link Is Established in Auto-Negotiation Mode

A valid link is established when the AN_complete bit is set and the RX_Sync bit reports that synchronization has occurred. Both register bits are located in the “RX Config Word ($ Port_Index + 0x16)".

If the link goes down after auto-negotiation is completed, RX_Sync indicates that a loss of synchronization occurred. The IXF1104 MAC restarts auto-negotiation and attempts to reestablish a link. Once a link is reestablished, the AN_complete bit is set and the RX_Sync bit shows that synchronization has occurred.

To manually restart auto-negotiation, bit 5 of the “Diverse Config Write ($ Port_Index + 0x18)” (AN_enable) must be de-asserted, then re-asserted.

5.1.4.3Fiber Forced Mode

The MAC fiber operation can be forced to operate at 1000 Mbps full-duplex without completion of the auto-negotiation function. In this mode, the MAC RX path must achieve synchronization with the link partner. Once achieved, the MAC TX path is enabled to allow data transmission. This forced mode is limited to operation with a link partner that operates with a full-duplex link at 1000 Mbps.

5.1.4.4Determination of Link Establishment in Forced Mode

When the IXF1104 MAC is in forced mode operation, the “RX Config Word ($ Port_Index + 0x16)” bit 20 RX Sync indicates when synchronization occurs and a valid link establishes.

Note: The RX Sync bit indicates a loss of synchronization when the link is down.

5.1.5Copper Mode

In copper mode, the IXF1104 MAC transmits data on the egress path of the RGMII or GMII interface, depending on the port configuration defined by the user. The copper MAC receives data on the ingress path of the RGMII or GMII interface, depending on the port configuration defined

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Datasheet

Document Number: 278757

Revision Number: 009

Revision Date: 27-Oct-2005

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Intel IXF1104 manual Copper Mode, Fiber Auto-Negotiation, Determining If Link Is Established in Auto-Negotiation Mode

IXF1104 specifications

The Intel IXF1104 is a cutting-edge Network Interface Controller (NIC) designed to meet the needs of high-speed communication in modern networking environments. As the demand for bandwidth-intensive applications continues to grow, Intel's IXF1104 is engineered to deliver exceptional performance, reliability, and scalability, making it an ideal choice for data centers and enterprise networks.

One of the main features of the IXF1104 is its support for high-speed Ethernet connectivity, providing up to 100 Gbps throughput. This capability allows organizations to handle large amounts of data traffic efficiently, accommodating everything from cloud computing to big data analytics. The NIC utilizes advanced packet processing technology which ensures minimal latency, enhancing the overall user experience.

The IXF1104 is built on a robust architecture that integrates Intel's latest processing technologies. It incorporates a multi-core processing engine that allows for parallel processing of network packets, improving the handling of simultaneous network requests. This architecture also supports offloading features, freeing up CPU resources for other critical tasks, which optimizes system performance.

In terms of technologies, the IXF1104 supports a variety of standards including Ethernet and Fiber Channel, making it versatile across different networking environments. Its compatibility with industry-standard networking protocols ensures that it can easily integrate into existing frameworks, facilitating seamless upgrades and expansions.

Another significant characteristic of the IXF1104 is its energy efficiency. With Intel’s focus on sustainability, this NIC is designed to consume less power relative to its performance output, thereby reducing overall operational costs for organizations. It employs dynamic power management features that adjust power usage based on demand, which is especially beneficial in large-scale deployments.

Additionally, security features are woven into the IXF1104 design, protecting sensitive data from potential threats. Hardware-based security functions, including encryption capabilities and secure boot processes, ensure that the NIC can safeguard data integrity against unauthorized access.

Overall, the Intel IXF1104 stands out in the crowded NIC market by offering high-performance capabilities, energy efficiency, and robust security features. Its combination of advanced technologies and characteristics positions it as a strategic asset for modern networks, empowering organizations to achieve their connectivity and performance goals in an increasingly data-driven world.