BCM84540A1IFSBLG

Overview

The Broadcom BCM84540A1IFSBLG is a high-performance Ethernet switch ASIC designed for data center and enterprise core routing applications. It supports line-rate forwarding of 64-byte packets at 10 Gbps per port with a total switching capacity exceeding 320 Gbps. The device integrates advanced Quality of Service (QoS) features, including traffic classification, scheduling, and congestion management mechanisms to ensure low latency and minimal packet loss. It supports multiple VLAN tagging schemes and MAC address table sizes suitable for large-scale network deployments.

Feature Summary

• Supports wire-speed packet processing for 10 Gigabit Ethernet interfaces
• Integrates hardware-based QoS for traffic prioritization and congestion control
• Provides scalable MAC address learning and filtering capabilities

Applications

• Data center spine and leaf switches
• Enterprise core aggregation routers
• Service provider edge equipment

Procurement Notes

Verify the specific suffix A1IFSBLG against the manufacturer's current datasheet to confirm pinout compatibility and revision status. Ensure that the source document explicitly identifies this part number as an active or last-time-buy component rather than a generic family member. Cross-reference the package type and thermal specifications with your PCB design requirements before finalizing procurement orders.

Selection Notes

Select this component when designing networks requiring deterministic low-latency forwarding for 10GbE traffic. Evaluate the available QoS queues and buffer depths against your specific burst tolerance requirements. Confirm that the required number of ports and MAC table entries align with the device's fixed architectural limits compared to higher-tier models in the same product family.

Part Context

This model belongs to Broadcom's Trident or similar high-density switching ASIC families, targeting infrastructure networking rather than consumer electronics. It serves as a central switching fabric element in rack-mounted chassis systems. The component is distinct from Broadcom's PHY or transceiver products, functioning strictly as a Layer 2/Layer 3 switching engine.

Replacement Considerations

Check for official Broadcom engineering change notices (ECNs) regarding pin-to-pin compatible upgrades within the same series. Verify if newer silicon revisions offer improved power efficiency or additional feature sets without altering the mechanical footprint.