KSZ8794CNXIC

Controllers Overview

The KSZ8794CNX is a Layer 2-managed, four-port Ethernet switch integrating three 10/100BASE-T/TX MAC/PHYs and one 10/100/1000BASE-T GMAC. It features a non-blocking store-and-forward switch fabric with a 64 KB frame buffer and a 1024-entry forwarding table. The device supports RGMII, MII, and RMII interfaces for the uplink port. Power supply requirements include 3.3V or 2.5V analog power (VDDAT), 3.3V/2.5V/1.8V digital I/O power (VDDIO), and a 1.2V core voltage. Operating temperatures range from -40°C to +85°C for industrial applications. Data rates support 10 Mb/s and 100 Mb/s on copper ports.

Controllers Feature Summary

• Integrated management capabilities including VLAN support, QoS prioritization, and ACL filtering
• Robust PHY ports with HP Auto MDI/MDIX and IEEE 802.1az EEE support
• Flexible MAC/GMAC interface supporting RGMII, MII, and RMII modes
• Advanced switch capabilities with rate limiting, multicast snooping, and broadcast storm protection

Controllers Applications

• Industrial Ethernet Applications employing IEEE 802.3-Compliant MACs
• VoIP Phone systems
• Set-Top/Game Box devices
• Broadband Gateway/Firewall/VPN implementations
• Wireless LAN Access Point + Gateway configurations

Controllers Procurement Notes

Verify the specific suffix against the manufacturer's current documentation to confirm temperature grade and package variations. Ensure the ordering information matches the exact component designation required for the design. Cross-reference the datasheet revision history for any operational updates or errata applicable to the silicon revision being procured.

Controllers Selection Notes

Select this component for designs requiring a managed switch with integrated Gigabit uplink options. Confirm that the host processor can support the required SPI or MDC/MDIO management interfaces. Evaluate power budget constraints regarding the 1.2V core and analog supply requirements. Verify compatibility with the target application's temperature range specifications.

Controllers Part Context

This component belongs to the KSZ8794 series of integrated Ethernet switches. It is designed to offload host processing by combining switch engine, frame buffer, and PHY transceivers in a single package. The device utilizes 0.065 µm CMOS technology to achieve lower power consumption while maintaining high performance for cost-sensitive networking applications.

Controllers Replacement Considerations

Consult Microchip Technology documentation for officially confirmed substitute part numbers. Verify pinout and register compatibility before substituting components within the same family.