Broadcom BCM78900 StrataXGS Tomahawk 5 Ethernet Switch TSMC N5 HPC FinFET Process Digital Floorplan Analysis
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The Tomahawk 5 (BCM78900), Broadcom’s first 5 nm merchant switch IC, was shipped in March 2023. It presents a significant enhancement in performance for AI/ML infrastructure, offering 64 channels of 800 Gigabit ethernet in data centers. This equates to a remarkable 51.2 Tb/second of switching capacity on a single chip twice that of the Tomahawk 4 (BCM56990) ethernet switch utilizing TSMC's 7 nm process. This report presents a Digital Floorplan Analysis (DFR) of the BCM78900 die found inside the Broadcom BCM78900B0KFRBG StrataXGS Tomahawk 5 ethernet switch.
