BCM56750A2KFSBG

Overview

The BCM56750A2KFSBG is a high-performance Ethernet switch integrated circuit manufactured by Broadcom Limited. It belongs to the Tomahawk family of networking ASICs, designed for data center and enterprise core routing applications. The component features a scalable architecture supporting multi-gigabit port densities, including 10G, 25G, 40G, and 100G interfaces. It utilizes an FCBGA+HS package to facilitate high-density PCB layouts with efficient thermal management. The device supports advanced switching capabilities such as hardware-accelerated virtualization protocols and comprehensive quality of service (QoS) mechanisms, ensuring low latency and high throughput for complex network topologies.

Feature Summary

• Supports flexible port configurations across multiple standard Ethernet speeds
• Integrates hardware acceleration for network virtualization encapsulation and decapsulation
• Provides robust traffic management with priority queuing and congestion control

Applications

• Data center spine and leaf switch architectures
• Enterprise core and distribution layer routers
• High-capacity carrier aggregation nodes

Procurement Notes

Verify the specific ordering suffix against the official Broadcom datasheet to confirm temperature range and package variant. Ensure compatibility with existing board designs regarding pinout and power requirements. Request RoHS compliance documentation from the supplier. Confirm that the source is an authorized distributor to avoid counterfeit components. Validate the part number against the latest engineering change notices before finalizing procurement orders.

Selection Notes

Select this component for designs requiring high port density and deterministic latency in aggregated networks. Evaluate thermal dissipation requirements due to the high performance of the silicon node. Compare against lower-tier Tomahawk models if port count or bandwidth exceeds actual application needs. Ensure the design team has access to the necessary SDK and reference designs for software integration. Consider the availability of development kits for early prototyping and validation phases.

Part Context

This part is part of Broadcom's Tomahawk series, which defines the industry standard for high-speed switching silicon. The BCM56750 variant specifically targets mid-to-high end data center deployments where scalability is critical. It represents a generation of chips that enabled the transition to 100G per lane connectivity in mainstream infrastructure equipment.

Replacement Considerations

Direct pin-to-pin replacements are generally not available within the same family due to architectural differences. Engineers typically migrate to newer Tomahawk generations (e.g., Tomahawk 3 or 4) which require significant redesign. Legacy equivalents may exist in older Broadcom families but will offer reduced performance.