KSZ8895RQ

Controllers Overview

The KSZ8895RQ is a Layer 2 managed, five-port Ethernet switch IC designed for cost-sensitive 10/100Mbps systems. It integrates five MACs and five PHYs with fully non-blocking shared memory-based switch fabric. The device features five 10/100Base-T/TX transceivers, one SW5-RMII interface for MAC5, and one P5-RMII interface for PHY5. It supports IEEE 802.3u standards with on-chip termination and internal core power controllers. The component operates within a commercial temperature range of 0°C to +70°C and is housed in a 128-pin PQFP package.

Controllers Feature Summary

• Supports VLAN ID tag insertion or removal based on ingress port and programmable rate limiting per port.
• Provides comprehensive configuration access via SPI, I2C master, and SMI interfaces.
• Includes QoS prioritization with support for 802.1p and DiffServ-based traffic management.
• Features low power dissipation capabilities including energy-detect mode and dynamic clock tree shutdown.

Controllers Applications

• VoIP phone
• Set-top/game box
• Automotive
• Industrial control
• IPTV POF

Controllers Procurement Notes

Verify the specific revision level against the manufacturer's datasheet before procurement. Confirm that the 128-pin PQFP package matches the target PCB footprint. Ensure the operating environment remains within the specified commercial temperature limits. Check for any required external components such as transformers or EEPROM for unmanaged mode configuration.

Controllers Selection Notes

Select this model when RMII interfaces are required for both the switch-side and PHY-side connections on Port 5. Compare against the KSZ8895MQ if MII interfaces are preferred instead. Consider the KSZ8895FMQ if fiber optic connectivity is needed for Ports 3 and 4. Verify voltage requirements for VDDIO and core power supplies during system design.

Controllers Part Context

This component belongs to the KSZ8895 family, which includes the KSZ8895MQ and KSZ8895FMQ variants. The RQ designation specifically indicates the inclusion of RMII interfaces for Port 5, distinguishing it from the MQ variant which uses MII. All models share the same 128-pin PQFP package and core switching architecture.

Controllers Replacement Considerations

Public confirmed substitute part numbers: KSZ8895MQ, KSZ8895FMQ.