KSZ8895RQXI

Controllers Overview

The KSZ8895RQXI is a Layer 2 managed, five-port Ethernet switch integrated with five MACs and five PHYs compliant with IEEE 802.3u standards. It operates at data rates of 10 Mb/s and 100 Mb/s using 10BASE-T and 100BASE-TX protocols. The device features a non-blocking shared memory-based switch fabric with 1.4 Gbps bandwidth and on-chip 64 Kbyte frame buffering. It supports up to 128 active VLAN groups, IGMP v1/v2 snooping, and IPv4/IPv6 QoS. Port 5 provides separate SW5-RMII for the MAC and P5-RMII for the PHY. Power supply ranges from 1.14 V to 3.465 V, with an operating temperature range of -40°C to +85°C.

Controllers Feature Summary

• Supports comprehensive Layer 2 management including VLAN tagging, rate limiting, and broadcast storm protection.
• Provides dual MII/RMII interfaces on Port 5 allowing flexible CPU connection modes.
• Includes advanced QoS prioritization with per-port queue selection and weighted fair queuing.
• Features low-power dissipation with hardware power-down and energy-detect mode capabilities.

Controllers Applications

• VoIP Phone systems
• Industrial Control networks
• SOHO Residential Gateways
• Wireless LAN Access Points

Controllers Procurement Notes

Verify that the ordering suffix 'I' corresponds to the industrial temperature range (-40°C to +85°C) as specified in the datasheet. Confirm the package type is PQFP-128. Ensure compatibility with the RMII interface configuration required by the host processor. Check for moisture sensitivity level requirements during storage and handling.

Controllers Selection Notes

Select this model when a managed switch with RMII interfaces is required for the CPU port. Compare against MQX variants if MII interfaces are preferred. Consider FQX variants if fiber connectivity is needed. Verify voltage levels for VDDIO (3.3V, 2.5V, or 1.8V) match the system design.

Controllers Part Context

The KSZ8895RQXI belongs to the KSZ8895 family of integrated 5-port 10/100 managed Ethernet switches. It shares the core switch fabric and management features with MQX, FQX, and MLX variants. The primary distinction lies in the Port 5 interface type (RMII vs. MII) and package style (PQFP vs. LQFP).

Controllers Replacement Considerations

Public confirmed substitute part numbers include KSZ9897RTXI-TR.