PM50068B1-FEI

Overview

The PM50068B1-FEI is a Switchtec PFX Gen 5 Fanout PCIe switch supporting 68 lanes, 18 virtual switch partitions, and 36 hot-plug controllers. It operates at PCIe Gen 5 speeds of 32 GT/s and integrates an internal MIPS processor for management functions. The device provides comprehensive error containment features including Advanced Error Reporting (AER) and Downstream Port Containment (DPC). It supports up to 48 nontransparent bridges (NTBs) assignable to any port and includes a high-performance DMA engine with up to 64 channels.

Feature Summary

• Supports logical non-transparent interconnects allowing for larger system topologies
• Integrates a high-performance, ultra-low latency cut-through DMA engine
• Provides advanced error containment mechanisms such as Completion Timeout Synthesis
• Includes real-time eye capture and external loopback capabilities for diagnostics

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 that the component matches the exact part number PM50068B1-FEI before procurement. Cross-reference datasheet specifications with supplier certificates to validate authenticity and compliance with required standards.

Selection Notes

Select this model when 68 lanes are required for fanout applications. Consider the PSX variant if specific partitioning requirements differ from the PFX configuration. Evaluate NTB availability and DMA channel needs against system topology constraints. Ensure compatibility with existing host interfaces and cooling solutions for high-speed operation.

Part Context

This component belongs to the Switchtec PFX/PSX Gen 5 Fanout PCIe Switch Family. Other family members include the PM50100, PM50084, PM50052, PM50036, and PM50028 variants. These switches share common architectural features but differ in lane counts and port configurations to suit various scalability requirements.

Replacement Considerations

Direct substitutes within the same family include the PM50084B1-FEI and PM50052B1-FEI. Verify pin compatibility and software configuration support before replacing the component. Consult official Microchip documentation for detailed cross-referencing information.