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Product Detailed Parameters
- Description：PCIE SWITCH GEN4 BBGA
- Series：Switchtec
- Mfr：Microchip Technology
- Package：Tray
- Applications：Controller
- Interface：JTAG, MII, RMII, UART, 2-Wire SMBus
- Voltage - Supply：-
- Package / Case：1467-BBGA
- Supplier Device Package：1467-BBGA (40x40)
- Grade：-
- Qualification：-
- Mounting Type：Surface Mount
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Overview
The PM41084B-FEI is a Switchtec PSX Gen4 Programmable PCIe switch supporting 84 lanes and 44 ports with 42 Non-Transparent Bridges. It features up to 22 virtual switch partitions, hot-plug controllers for each port, and an integrated MIPS processor. The device operates at PCIe Gen4 speeds of 16 GT/s and includes advanced error containment, comprehensive diagnostics, and peripheral I/O interfaces such as TWI, UART, and Ethernet MAC.
Feature Summary
- Supports flexible port bifurcation to x1/x2/x4/x8/x16 configurations without restrictions on upstream or downstream mapping.
- Integrates high-performance ultra-low latency DMA engine and advanced error reporting mechanisms including DPC and UEC.
- Provides extensive diagnostic capabilities with real-time eye capture, external loopback, and per-port performance counters.
- Includes NVMe-MI enclosure management with integrated NVMe controller and secure boot image authentication.
Applications
- PCIe SSD enclosures
- Flash arrays
- Multi-host architectures
- High-density servers
Procurement Notes
Verify the specific ordering suffix against official Microchip documentation to confirm package type and temperature range. Ensure compatibility with the Switchtec Gen4 PCIe Switch Evaluation Kit if development tools are required. Confirm RoHS compliance status through the manufacturer's environmental files before procurement.
Selection Notes
Select this model when 84 lanes and 44 ports are required within the PSX family. Consider variants like PM41100B-FEI for higher lane counts or PM41068B-FEI for reduced port density. Evaluate the need for virtual switch partitions and NTB assignments based on system topology requirements.
Part Context
This component belongs to the Switchtec PSX Gen4 Programmable PCIe Switch Family, which also includes models PM41100, PM41068, PM41052, PM41036, and PM41028. These switches are designed for high-reliability applications requiring customizable PCIe switching solutions in data center environments.
Replacement Considerations
Direct substitutes include other PSX Gen4 models such as PM41100B-FEI or PM41068B-FEI depending on lane and port requirements. Verify pinout and software compatibility with the Switchtec SDK before replacing existing components in a design.
FAQ
What is the maximum number of Non-Transparent Bridges supported by the PM41084B-FEI?
The PM41084B-FEI supports up to 42 Non-Transparent Bridges (NTBs) assignable to any port.
Does the PM41084B-FEI support hot-plug functionality?
Yes, it includes hot-plug and surprise-plug controllers for each of its 44 ports.
What diagnostic tools are available for this switch?
It offers real-time eye capture, external loopback capability, and access to errors, statistics, and performance counters via the ChipLink Diagnostic Tools.
