PM41068B-FEI

Overview

The PM41068B-FEI is a Gen 4 Programmable PCIe Switch from the Switchtec PSX family, featuring 68 lanes and supporting up to 36 ports with 34 Non-Transparent Bridges (NTBs). It includes 18 virtual switch partitions and hot-plug controllers for each port. The device integrates a MIPS processor, advanced error containment mechanisms like AER and DPC, and comprehensive diagnostics including real-time eye capture. It supports PCIe Gen4 16 GT/s speeds and offers flexible port bifurcation options.

Feature Summary

• High-reliability PCIe architecture with robust error containment and end-to-end data integrity protection
• Integrated NVMe-MI enclosure management with in-band and out-of-band support
• Comprehensive diagnostics and debugging capabilities including real-time eye capture and loopback modes
• Flexible I/O interfaces including TWI, SGPIO, Ethernet MAC, UARTs, and JTAG

Applications

• PCIe SSD enclosures
• Flash arrays
• Multi-host architectures
• High-density servers
• Blade servers

Procurement Notes

Verify the exact part number PM41068B-FEI against official Microchip documentation to ensure correct revision and package type. Confirm that the ordering suffix matches the required temperature range and packaging specifications. Cross-reference with authorized distributors to validate authenticity and avoid counterfeit components.

Selection Notes

Select the PM41068B-FEI when 68 lanes and 36 ports are required for high-density server or storage applications. Consider the integrated NVMe-MI features if enclosure management is needed. Evaluate the available NTBs and virtual partitions to ensure they meet the system's topology requirements compared to other PSX variants.

Part Context

The PM41068B-FEI belongs to the Switchtec PSX Gen 4 Programmable PCIe Switch Family, which also includes models like PM41100, PM41084, PM41052, PM41036, and PM41028. These switches are designed for data center solutions requiring high reliability and scalability.

Replacement Considerations

Direct replacements within the same family include PM41084B-FEI (84 lanes) or PM41052B-F3EI (52 lanes), depending on lane and port requirements. Ensure compatibility with existing firmware and hardware configurations when substituting.