PM8576B-FEI

Overview

The PM8576B-FEI is a Switchtec PFX-I PCIe Gen3 fanout switch supporting up to 96 lanes and 48 ports. It operates within an extended industrial temperature range of –40°C ambient to 105°C junction. The device provides up to 174 GB/s switching capacity, supports 24 virtual switch partitions, and allows assignment of up to 48 Non-Transparent Bridges (NTBs) to any port. It features PCIe Gen3 8 GT/s interfaces with support for link training and manual PHY configuration.

Feature Summary

• Supports hot- and surprise-plug controllers per port for enhanced reliability
• Includes advanced error containment mechanisms such as Downstream Port Containment (DPC) and Completion Timeout Synthesis (CTS)
• Provides comprehensive diagnostics including real-time eye capture and TLP generator capabilities

Applications

• Data center equipment
• Defense systems
• Industrial servers and workstations
• Cellular infrastructure and networking

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to confirm package dimensions and temperature ratings. Ensure compatibility with required host interfaces and peripheral I/O standards before procurement. Confirm current availability status directly with authorized distributors or the manufacturer.

Selection Notes

Select this model when requiring high-reliability PCIe connectivity with extensive partitioning and NTB capabilities. Consider the PFX-I variant specifically for applications demanding operation in extended industrial temperature environments. Evaluate port bifurcation requirements and diagnostic tool integration needs during the selection process.

Part Context

This component belongs to the Switchtec PFX/PFX-I PCIe Gen3 Fanout Switch Families. It is part of a series offering various lane counts, ranging from 24xG3 to 96xG3 variants. The PM8576B-FEI represents the highest performance tier within this family, providing maximum lane and port density.

Replacement Considerations

PM8536B-FEI serves as the commercial temperature variant of this component.