KSZ8864RMNU-TR

Controllers Overview

The KSZ8864RMNU-TR is an automotive-grade, Layer 2 managed 4-port switch manufactured by Microchip Technology. It integrates four MACs and two PHYs compliant with IEEE 802.3u standards. The device features a non-blocking shared memory switch fabric with 1.4Gbps bandwidth and 64Kbyte frame buffer memory. It supports MII or RMII interfaces for CPU control via SPI, SMI, or I2C. Operating within the -40°C to +85°C temperature range, it utilizes 0.13µm CMOS technology with low power consumption.

Controllers Feature Summary

• Supports IEEE 802.1q VLAN groups and IEEE 802.1p/q tagging for traffic prioritization.
• Includes IGMP v1/v2 snooping and IPv4/IPv6 QoS support for multicast filtering.
• Provides port mirroring, monitoring, and comprehensive MIB counters for network diagnostics.
• Features energy-detect mode and dynamic clock tree shutdown for optimized power efficiency.

Controllers Applications

• Automotive ethernet systems
• Industrial control networks
• VoIP phones and set-top boxes
• Broadband gateways and firewalls

Controllers Procurement Notes

Verify the specific ordering suffix to confirm the package type and lead finish. Confirm that the component meets AEC-Q100 qualification requirements if intended for automotive applications. Ensure compatibility with the required operating temperature range before finalizing procurement specifications.

Controllers Selection Notes

Select this model when an automotive-qualified managed switch is required. Verify interface requirements for MII or RMII connections to the host processor. Consider the 64-pin QFN package constraints during PCB layout planning. Evaluate power supply voltage levels for VDDIO and core domains to ensure proper operation.

Controllers Part Context

This component belongs to the KSZ8864 family of integrated Ethernet switches. The 'RMNU' designation indicates the Automotive AEC-Q100 qualified version with an industrial temperature range. It shares architectural similarities with commercial variants but adheres to stricter automotive reliability standards.

Controllers Replacement Considerations

The KSZ8864RMNI serves as the industrial-grade alternative without automotive qualification. The KSZ8864RMN is the commercial-grade option suitable for lower temperature ranges. Verify pinout and register compatibility when substituting these variants in existing designs.