Intel® IXF1104 4-Port Gigabit Ethernet Media Access Controller

5.10.3ID Register

The ID register is a 32-bit register. The IDCODE instruction connects this register between TDI and TDO. See Table 112 “JTAG ID ($0x50C)” on page 192 for detailed information.

5.10.4Boundary Scan Register

The Boundary Scan register is a shift register made up of all the boundary scan cells associated with the device signals. The number, type, and order of the boundary scan cells are specified in the IXF1104 MAC BSDL file. The EXTEST and SAMPLE instructions connect this register between TDI and TDO.

5.10.5Bypass Register

The Bypass register is a 1-bit register that bypasses the IXF1104 MAC to reduce the JTAG chain length when accessing other devices on the chain besides the IXF1104 MAC. The BYPASS, HIGHZ, and CLAMP instructions connect this register between TDI and TDO.

5.11Loopback Modes

The IXF1104 MAC provides two loopback modes for device diagnostic testing when it has been integrated into a user system. A line-side loopback allows the line-side receive interface to be looped back to the transmit line-side interface. A SPI3 loopback mode allows the SPI3 transmit interface to be looped back to the SPI3 receive interface.

The IXF1104 MAC line-side and SPI3 loopback modes are effective diagnostic tools for validation of system level connectivity and interface compatibility.

In loopback-mode operation, the data path is internally redirected to allow for the data flow return path. Redirection requires the data path to circumvent resources that are required during normal traffic flow. For example, while operating in SPI3 loopback mode, the data path does not pass through the MAC or TX FIFO and those resource features are not used. The result is a possible degradation of throughput performance and statistical data accuracy. Intel recommends that loopback modes be used for diagnostic purposes only.

5.11.1SPI3 Interface Loopback

To provide a diagnostic loopback feature on the SPI3 interface, it is possible to configure the IXF1104 MAC to loop back any data written to the IXF1104 MAC through the SPI3 transmit interface back to the SPI3 receive interface. This is accomplished using the data path shown in Figure 33.

Note: Loopback packets also appear on the line side TX interface.

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Datasheet

Document Number: 278757

Revision Number: 009

Revision Date: 27-Oct-2005

Page 125
Image 125
Intel IXF1104 manual Loopback Modes, ID Register, Boundary Scan Register, Bypass Register, 11.1 SPI3 Interface Loopback

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.