BCM84780AKFSBLG

Overview

The BCM84780AKFSBLG is a high-performance Ethernet switch ASIC from Broadcom's Trident series, designed for enterprise and data center core routing applications. It delivers a switching capacity of 1.28 Tbps with a packet buffer memory of 36 MB to handle burst traffic effectively. The device supports a dense port configuration including 32 ports of 40 Gigabit Ethernet (40GbE) or 128 ports of 10 Gigabit Ethernet (10GbE). It integrates advanced hardware-based security features and supports standard management protocols such as SNMP and CLI for network integration.

Feature Summary

• Supports flexible port configurations for both 40GbE and 10GbE interfaces
• Integrates substantial on-chip packet buffering for traffic smoothing
• Includes dedicated hardware acceleration for security policy enforcement

Applications

• Enterprise network core routers
• Data center spine layer switches
• High-density aggregation platforms

Procurement Notes

Verify the specific suffix 'KFSBLG' against the manufacturer's official datasheet to confirm package type, pinout, and commercial temperature range specifications. Ensure the component source provides traceability documentation to mitigate counterfeit risks associated with complex BGA packages.

Selection Notes

Select this component when a fixed high-throughput architecture is required for core routing rather than programmable data plane flexibility. Evaluate thermal dissipation requirements for the FCBGA package in enclosed chassis designs compared to lower-density alternatives.

Part Context

This part belongs to the Broadcom Trident family of switching silicon, which established standards for high-port-count Ethernet switching. It serves as a foundational component for building scalable network infrastructure that requires deterministic latency and high reliability in carrier-grade environments.

Replacement Considerations

Potential substitutes within the same product line include the BCM84780A0KFSBG or BCM84780B0KFSBG. Verify pin-to-pin compatibility and register-level functional equivalence before considering these variants as direct replacements.