High-Performance 4-Port 10/100 Managed Ethernet Switch with Integrated PHYs Using the Microchip KSZ8864CNXI-TR

The demand for reliable, high-performance, and cost-effective network switching solutions continues to grow across industrial automation, smart energy, and enterprise networking applications. Addressing this need, the Microchip KSZ8864CNXI-TR stands out as a highly integrated, 4-port managed Ethernet switch solution that combines robust functionality with a compact design. This system-on-chip (SoC) is engineered to deliver seamless connectivity and advanced network management capabilities, making it an ideal core for a wide range of embedded networking products.

At the heart of this solution are four fully integrated 10/100 physical layer transceivers (PHYs), which eliminate the need for external PHY components. This high level of integration significantly reduces the total bill of materials (BOM), minimizes board space, and simplifies the overall design process. The switch core supports non-blocking, wire-speed switching on all ports, ensuring that data flows efficiently without internal congestion, which is critical for real-time industrial communication.

A key strength of the KSZ8864CNXI-TR is its comprehensive managed switch feature set. It provides complete support for Quality of Service (QoS) prioritization, VLANs, port-based access control, and detailed traffic monitoring through MMI (Management Interface) and SPI (Serial Peripheral Interface) host interfaces. This allows network administrators to segment traffic, prioritize critical data packets, and enhance overall network security and determinism. For robust operation in electrically harsh environments, such as those found in industrial settings, the device offers superior ESD protection and supports industrial temperature ranges.

Furthermore, the switch IC incorporates advanced power management features, including Energy Detect Power-Down mode, which dramatically reduces power consumption when a connected link is down. This aligns with the growing emphasis on developing energy-efficient network infrastructure.

ICGOODFIND: The Microchip KSZ8864CNXI-TR is a superior integrated circuit for designers building managed Ethernet switches. Its combination of high integration, advanced management features, and industrial robustness provides a powerful, yet cost-effective foundation for creating next-generation networked devices that require reliable and secure communication.

Keywords: Managed Ethernet Switch, Integrated PHYs, Quality of Service (QoS), Industrial Networking, Energy Efficiency.