Bcm81724 2021 -

: Integrated Pseudorandom Binary Sequence (PRBS) data generator and checker alongside per-lane eye monitoring accessible via Management Data Input/Output (MDIO). Operational Modes and Protocol Support

The BCM81724 supports:

The "dual" in its description refers to the chip’s ability to manage two independent streams of data simultaneously. In a server environment, redundancy is key. By having two channels, the BCM81724 allows for failover capabilities; if one path is severed or congested, the data can instantly reroute through the second channel, ensuring zero downtime—a critical requirement for banking, healthcare, and cloud computing systems. bcm81724

: It converts 8 channels of 56 Gb/s PAM-4 data into 16 channels of 25 Gb/s NRZ data (or vice versa), facilitating seamless communication between legacy 25G/100G components and modern 400G systems.

By converting dense, multi-level Pulse Amplitude Modulation (PAM-4) signals into traditional Non-Return-to-Zero (NRZ) formats, the Broadcom BCM81724 bypasses the need for costly hardware overhauls when upgrading core data center switch architectures. Core Architecture and Technological Overview By having two channels, the BCM81724 allows for

Without the BCM81724 (and its competitors), hyperscale data centers would be unable to disaggregate storage or memory—a key trend for efficiency.

The BCM81724 is often chosen for CXL 2.0 memory enablement and environments requiring top-tier equalization for long cables. Microchip’s parts are excellent for pure port switching, while TI’s parts are for simpler muxing tasks. By having two channels

To understand how the BCM81724 fits into network roadmaps, it helps to compare it to adjacent physical layer chips across Broadcom's product family: Feature / Specification BCM81724 (Gearbox Bridge) BCM81330 (Backplane Retimer) BCM87728 (Next-Gen Gearbox) 400G Hybrid Networking Bridging 56G Fabric & Backplane Retiming High-Density 7nm Gearbox Routing Process Node 16 nm CMOS 16 nm CMOS Package Size 19 mm × 19 mm (484-pin BGA) 19 mm × 19 mm (324-pin BGA) 23 mm × 23 mm (729-pin BGA) Data Formats PAM-4 & NRZ mixed PAM-4 & NRZ dual-mode Enhanced PAM-4 & NRZ Max Line Rate 400 GbE (Dual 200G/Quad 100G) 8 × 56 Gb/s Duplex ports 400 GbE optimized (7nm) Application Scenarios in Hyperscale Data Centers The primary deployment mechanism for the is on high-density front-panel line cards . Bridging the Tomahawk 3 Ecosystem

Where would you actually find the BCM81724 in production? Here are the dominant scenarios.