KSZ8864CNXC-TR

Controllers Overview

The KSZ8864CNXC-TR is a Layer 2 managed Ethernet switch manufactured by Microchip Technology. It integrates four MACs and two 10/100Base-T/TX PHYs within a 64-pin QFN package. The device features a non-blocking shared memory switch fabric with 1.4 Gbps bandwidth and 64 Kbyte frame buffering. It supports MII and RMII interfaces on Ports 3 and 4, configurable via strap pins or registers. Electrical specifications include a 1.2V core voltage, 3.3V analog supply, and digital I/O supporting 3.3V, 2.5V, or 1.8V. Operating temperatures range from 0°C to +70°C for commercial use.

Controllers Feature Summary

• Supports IEEE 802.1q VLAN tagging and up to 128 VLAN groups
• Includes LinkMD cable diagnostics and IGMP v1/v2 snooping
• Provides per-port rate limiting and broadcast storm protection
• Features comprehensive management via SPI, I2C, and SMI interfaces

Controllers Applications

• VoIP Phone systems
• Set-Top boxes and Game consoles
• Industrial Control networks
• SOHO Residential Gateways
• Wireless LAN Access Points

Controllers Procurement Notes

Verify the specific ordering suffix against the manufacturer's current documentation to confirm package type and temperature grade. Confirm that the -TR suffix corresponds to the reel packaging format required for your assembly line. Ensure compatibility with the intended serial bus configuration settings before finalizing procurement.

Controllers Selection Notes

Select this component when a compact 4-port solution with integrated MACs is required. Verify interface requirements for Ports 3 and 4 to ensure MII or RMII modes align with the host processor. Check power supply constraints to match the 1.2V core and 3.3V analog requirements. Consider thermal dissipation limits for the specific enclosure design.

Controllers Part Context

This part belongs to the KSZ8864 family of integrated switches. Variants such as KSZ8864RMNUB offer industrial temperature ranges and AEC-Q100 automotive qualification. The CNXC designation indicates the commercial temperature grade and specific packaging configuration provided by the manufacturer.

Controllers Replacement Considerations

The KSZ8864RMNUB is a pin-compatible alternative offering industrial temperature ratings and automotive qualification. Verify if the higher temperature range or specific automotive standards are necessary for the target application environment.