KSZ9477STXI-TR

Controllers Overview

The KSZ9477STXI-TR is a 7-port Gigabit Ethernet switch IC from Microchip Technology, housed in a 128-pin TQFP-EP package. It integrates five 10/100/1000BASE-T PHY transceivers and two configurable MAC ports (SGMII and RGMII/MII/RMII). The device supports IEEE 1588v2 PTP, AVB, and ring redundancy protocols like DLR and HSR. Operating voltage ranges from 1.14V to 3.465V, with an industrial temperature range of -40°C to +85°C. Management interfaces include SPI, I2C, MIIM, and in-band control.

Controllers Feature Summary

• Integrates five 10/100/1000BASE-T PHYs with optional Quiet-WIRE EMC filtering
• Supports IEEE 1588v2 Precision Time Protocol and Audio Video Bridging standards
• Provides hardware offloading for DLR and HSR ring redundancy protocols
• Features non-blocking wire-speed switching fabric with extensive QoS and VLAN capabilities

Controllers Applications

• Industrial Ethernet networks including Profinet, MODBUS, and Ethernet/IP
• IEC 61850 power substation automation systems
• Real-time Ethernet and networked measurement equipment

Controllers Procurement Notes

Verify the specific suffix 'TR' indicates tape-and-reel packaging when sourcing. Confirm the 'X' suffix corresponds to the industrial temperature grade (-40°C to +85°C) as defined by the manufacturer's part numbering system. Ensure compatibility with the 128-pin TQFP-EP footprint during PCB layout.

Controllers Selection Notes

Select this component for designs requiring integrated PHYs and advanced time synchronization features. It is suitable for applications needing hardware-based ring redundancy without host processor intervention. Consider the available management interfaces and power management options when designing the system architecture.

Controllers Part Context

This part belongs to the KSZ9477S series of managed Gigabit Ethernet switches. It is designed to offload processing tasks from the host controller through integrated hardware features for time stamping, queue management, and redundancy protocols.

Controllers Replacement Considerations

Check for direct substitutes within the KSZ9477 family or the KSZ9897 series, ensuring pinout and feature parity. Verify that any replacement maintains support for required protocols such as IEEE 1588v2 and AVB.