KSZ9897STXI-TR

Controllers Overview

The KSZ9897STXI-TR is a 7-port Gigabit Ethernet managed switch IC from Microchip Technology. It integrates five 10/100/1000BASE-T PHY transceivers, two configurable MAC ports (SGMII and RGMII/MII/RMII), and a non-blocking switching fabric. The device supports IEEE 802.3 standards including 10BASE-Te, 100BASE-TX, and 1000BASE-T. Operating voltage ranges from 1.8V to 3.465V with a maximum supply current of 750mA. It operates within an industrial temperature range of -40°C to +85°C. The component is housed in a 128-pin TQFP-EP package.

Controllers Feature Summary

• Integrates five 10/100/1000BASE-T PHY transceivers with on-chip termination resistors for reduced power consumption.
• Features a non-blocking wire-speed Ethernet switching fabric with 256kByte frame buffer and 4096 entry forwarding table.
• Supports comprehensive VLAN and QoS capabilities including IEEE 802.1Q, 802.1p/Q tag insertion/removal, and 802.1X access control.
• Provides flexible management interfaces via SPI, I2C, MIIM, and in-band management through any data port.

Controllers Applications

• Stand-alone 10/100/1000Mbps Ethernet switches
• VoIP infrastructure switches
• Broadband gateways and firewalls
• Wi-Fi access points
• Industrial control and automation switches

Controllers Procurement Notes

Verify the specific suffix 'TR' indicates tape and reel packaging when sourcing. Confirm the industrial temperature grade (-40°C to +85°C) matches system requirements. Ensure the 128-pin TQFP-EP footprint aligns with PCB layout specifications. Check for the latest errata sheets regarding silicon revisions before finalizing procurement.

Controllers Selection Notes

Select this component for designs requiring integrated Gigabit PHYs and managed switching features. The SGMII and RGMII/MII/RMII ports allow direct connection to host processors or other network devices. Consider the power management features like Wake-on-LAN and Energy Detect if low-power standby modes are required for the application.

Controllers Part Context

This part belongs to the KSZ9897S series of highly integrated Layer 2 managed Gigabit Ethernet switches. It is designed to offload host processing by incorporating MAC units and PHYs directly on the chip. The series supports various interface configurations to accommodate different system architectures and connectivity needs.

Controllers Replacement Considerations

Consult official Microchip documentation for confirmed substitute part numbers. Verify pin compatibility and electrical characteristics before replacing components in existing designs.