Intel® IXF1104 4-Port Gigabit Ethernet Media Access Controller

($0x799)" bits to look at to identify the interrupt condition source port. However, this is achieved at the expense of the three device signals.

5.7.3I²C Module Configuration Interface

The I²C interface is supported on SFP optical modules. Details of the operation are found in the SFP Multi-Source Agreement, which details the contents of the registers and addresses accessible on a given Optical Module Interface supporting this interface.

The SFP MSA identifies up to 512 8-bit registers that are accessible in each optical module. The Optical Module Interface is read-only and supports either sequential or random access to the 8-bit parameters. The maximum clock rate of the interface is 100 kHz. All address-select signals on the internal E²PROM are tied Low to give a device address equal to zero (00h).

Several PHY vendors may offer copper/CAT5-based SFP optical compliant modules. To program the internal configuration registers of these modules, the IXF1104 MAC I2C interface needs to provide the capability to write data to the SFP modules.

The IXF1104 MAC I2C interface is designed to allow individual writes of byte-wide data to the SFP.

The specific interface in the IXF1104 MAC supports only a subset of the full I²C interface, and only the features required to support the Optical Module Interfaces are implemented. This leads to the following support features.

•Single I2C_CLK pin connected to all optical modules and implemented to save unnecessary signals use.

•Four per-port I2C_DATA signals (I²C Data[3:0]) are required because of the optical module requirement that all modules must be addressed as 00h.

•The interface has both read and write functionality.

•Due to the single internal optical module controller, only one optical module may be accessed at any one time. Each access contains a single register Read. Since these register accesses will most likely be done during power-up or discovery of a new module, these restrictions should not affect normal operation.

•The I2C interface supports byte write accesses to the full address range.

Note: The I2C interface only supports random single-byte reads and does not guarantee coherency when reading two-byte registers.

5.7.3.1I2C Control and Data Registers

In the IXF1104 MAC, the entire I²C interface is controlled through the following two registers:

•“I2C Control Ports 0 - 3 ($0x79B)” on page 223

•“I2C Data Ports 0 - 3 ($0x79F)” on page 223

These registers can be programmed by system software using the CPU interface.

5.7.3.2I2C Read Operation

To perform a read operation using the I2C interface, use the following sequence:

Datasheet

110

Document Number: 278757

Revision Number: 009

Revision Date: 27-Oct-2005

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Intel IXF1104 manual 3 I²C Module Configuration Interface, 3.1 I2C Control and Data Registers, 3.2 I2C Read Operation
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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.
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