PM40068B-FEI

Overview

The PM40068B-FEI is a high-reliability PCIe switch from the Switchtec PFX Gen 4 Fanout family. It supports up to 68 lanes and provides 36 ports with 34 non-transparent bridges (NTBs). The device includes 18 virtual switch partitions and hot-plug controllers for each port. It features advanced error containment, comprehensive diagnostics, and an integrated MIPS processor.

Feature Summary

• High-performance non-blocking architecture supporting flexible lane bifurcation
• Advanced error containment including AER, DPC, and Completion Timeout Synthesis
• Comprehensive diagnostics with real-time eye capture and external loopback
• Integrated MIPS processor for system management and secure boot

Applications

• Data center equipment
• Defense and industrial servers
• Cellular infrastructure
• Metro networks and core networking

Procurement Notes

Verify the specific ordering suffix against official Microchip documentation to ensure correct package type and temperature rating. Confirm RoHS compliance status and check for any recent lifecycle notices or obsolescence warnings before finalizing procurement plans.

Selection Notes

Select this model when 68 lanes and 36 ports are required. Compare against PM40084B-FEI for higher capacity or PM40052B-F3EI for lower cost. Ensure the design accommodates the necessary peripheral I/O interfaces and power requirements specified in the datasheet.

Part Context

This component belongs to the Switchtec PFX Gen 4 Fanout PCIe Switch Family. Other members include PM40100B-FEI, PM40084B-FEI, PM40052B-F3EI, PM40036B-F3EI, and PM40028B-F3EI, offering varying lane counts from 28 to 100.

Replacement Considerations

Direct substitutes within the same family include PM40084B-FEI (higher capacity) or PM40052B-F3EI (lower capacity). Verify pin compatibility and software configuration support before swapping.