BCM5719A1KFBG

Overview

The BCM5719A1KFBG is a quad-port Ethernet controller from the NetXtreme II series, manufactured by Broadcom Limited. It integrates four independent 10/100/1000 Mbps MACs and supports dual media interfaces for each port, allowing selection between copper RJ-45 and fiber optic connections via SFP modules. The device utilizes a PCI Express Gen 2 interface with x8 lane connectivity to host processors. Key technical specifications include support for jumbo frames up to 9KB, hardware-based TCP/IP checksum offload, and VLAN tagging capabilities. It operates within a commercial temperature range of 0°C to 70°C and is housed in a 324-ball FBGA package.

Feature Summary

• Dual media interface support per port enables flexible connection to either standard copper cabling or fiber optic transceivers.
• Integrated PCI Express Gen 2 interface provides high-bandwidth data transfer with low latency to the system host.
• Hardware acceleration features include TCP/IP checksum offload and large frame support to reduce CPU utilization.

Applications

• Server network interface cards requiring multiple high-speed ports
• Storage area network (SAN) infrastructure equipment
• Enterprise networking switches and routers

Procurement Notes

Verify the specific suffix 'KFBG' against the manufacturer's current datasheet to confirm pinout compatibility and thermal specifications. Ensure that the procurement source provides valid RoHS compliance documentation as required for modern electronic assemblies. Cross-reference the part number with official Broadcom distributors to avoid counterfeit components.

Selection Notes

Select this component when a design requires four distinct Gigabit Ethernet ports with mixed media flexibility on a single chip. It is suitable for systems needing PCI Express Gen 2 connectivity rather than older legacy buses. Consider the thermal dissipation requirements of the FBGA package during PCB layout planning.

Part Context

This part belongs to the Broadcom NetXtreme II family of Ethernet controllers, designed for enterprise and data center environments. It succeeds earlier generations by offering higher integration density and improved power efficiency compared to discrete PHY solutions. The model represents a standard commercial-grade variant within the broader portfolio.

Replacement Considerations

Direct functional substitutes may include other NetXtreme II variants such as the BCM5719S, provided the package and interface requirements match. Verify pin-to-pin compatibility before substitution, as minor revisions can alter electrical characteristics or pin assignments.