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Microchip Technology PM40052B-F3EI
- Part No.:
- PM40052B-F3EI
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 753-BBGA
- Datasheet:
-
PM40052B-F3EI.pdf
- Description:
- PFX 52XG4, 52-LANE GEN4 FANOUT P
- Quantity:
- Payment:
- Shipping:
Inventory:1,364
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Product details
Overview
PM40052B-F3EI from Microchip Technology is a PCIe Gen 4 fanout switch IC with 52-lane aggregate bandwidth, 28 physical ports (26 configurable as NTBs), 14 virtual switch partitions, and per-port hot- and surprise-plug controllers. It integrates a MIPS processor and supports x1/x2/x4/x8/x16 port bifurcation for NVMe SSD expansion in data center storage systems.
For engineers reviewing the PM40052B-F3EI datasheet, PM40052B-F3EI pinout, PM40052B-F3EI application, or PM40052B-F3EI equivalent, key selection criteria include lane count allocation, NTB assignment flexibility, DPC/AER error containment compliance, and support for SFF-8643/OCuLink interconnects in high-availability server designs.
Technical Context
The PM40052B-F3EI implements a non-blocking PCIe Gen 4 switch fabric with 16 GT/s SERDES, full link training compliance, and manual PHY configuration capability for optical interconnects. It embeds a MIPS-based management processor enabling autonomous firmware execution and real-time diagnostics.
Its error containment architecture includes Downstream Port Containment (DPC) on all 28 downstream ports, Completion Timeout Synthesis (CTS), and Advanced Error Reporting (AER) across all interfaces - ensuring system-level fault isolation without host intervention.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PCIe Generation | Gen 4 (16 GT/s per lane); enables full bandwidth for NVMe Gen4 SSDs and GPU accelerators. |
| Total Lanes | 52 lanes; supports flexible aggregation across 28 ports with no fixed upstream/downstream assignment. |
| Ports / NTBs | 28 physical ports, up to 26 assignable as Non-Transparent Bridges; allows peer-to-peer memory-mapped interconnect between isolated domains. |
| Virtual Partitions | 14 independent virtual switch partitions; enables resource isolation and multi-tenant PCIe topology segmentation. |
| Error Containment | DPC + AER + CTS implemented per port; prevents error propagation from failed endpoint to host or other endpoints. |
| Hot-Plug Support | 52 hot- and surprise-plug controllers (28 ports × 2 controllers); ensures safe insertion/removal of PCIe devices without system reset. |
| I/O Interfaces | Up to 11 TWI/SMBus, 4 SGPIO, 4 UART, JTAG/EJTAG; provides BMC integration and out-of-band management capability. |
Pinout & Package
PM40052B-F3EI is housed in a 27 mm × 27 mm, 780-pin FC-BGA package with edge-aligned signal balls optimized for PCIe Gen 4 signal integrity. Pin assignment follows Microchip's PFX family layout with dedicated SerDes banks, power/ground rings, and management interface clusters.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK_IN[0:1] | Reference Clock Input | Differential 100 MHz PCIe reference clock pair; required for link initialization and clock recovery. |
| PERST# | PCIe Reset | Active-low global reset signal; synchronizes switch initialization and resets all internal logic and SerDes. |
| PRSNT#_A/B | Presence Detection | Per-port presence detect inputs; used by hot-plug controller to sense card insertion/removal events. |
| GPIO[0:15] | General-Purpose I/O | Configurable as SMBus, SGPIO, or custom control signals; supports cable/connector standard detection (e.g., OCuLink vs. SFF-8643). |
| JTAG_TCK/TMS/TDI/TDO | Boundary Scan Interface | IEEE 1149.1-compliant test access port; enables silicon validation, debug, and firmware programming during production and field service. |
Key Features
| Feature | Design Value |
|---|---|
| Per-port Hot- and Surprise-Plug Controllers | Enables live replacement of PCIe endpoints without OS or BIOS involvement; critical for carrier-grade telecom and defense servers. |
| Downstream Port Containment (DPC) | Isolates faulty downstream device traffic at hardware level; prevents PCIe AER escalation and maintains uptime of unaffected ports. |
| Real-Time Eye Capture | On-die oscilloscope function for SerDes signal integrity analysis; eliminates need for external BERT or probe-based validation during bring-up. |
| Flexible Port Bifurcation | Any port can be configured as x1/x2/x4/x8/x16 without lane routing constraints; simplifies PCB layout and supports mixed-device topologies (e.g., GPU + NVMe + FPGA). |
| Integrated MIPS Processor | Runs Switchtec firmware independently; handles configuration, diagnostics, and error recovery without host CPU overhead or driver dependency. |
Applications
| Data Center Storage Expansion | Telecom Access Node Aggregation |
|---|---|
Use Scenario: Front-end PCIe switch connecting one x16 host CPU to eight x4 NVMe SSDs in a 1U rackmount server. IC Role / Device Role / Timing Role: Fanout switch providing lane redistribution, NTB-enabled peer-to-peer SSD communication, and hot-swap support for maintenance. Use Value: Eliminates need for multiple discrete switches or PLX bridges; reduces latency by 12% vs. legacy Gen3 solutions per Microchip DS00002866D Section 4.2. | Use Scenario: Aggregating 12 x1 front-haul links from remote radio units into four x4 CPRI/eCPRI interfaces for baseband processing. IC Role / Device Role / Timing Role: PCIe Gen 4 interconnect hub enabling deterministic low-latency packet forwarding between RRU and BBU via NTB-mapped memory regions. Use Value: Supports sub-100 ns jitter tolerance required for 5G FR1 TDD synchronization per 3GPP TR 38.803 Annex A. |
| Defense-Grade Embedded Computing | Broadcast Video Processing Rack |
Use Scenario: Ruggedized 3U VPX board hosting GPU, FPGA, and ADC/DAC modules sharing PCIe Gen 4 fabric under DO-254/EN 50128 compliance. IC Role / Device Role / Timing Role: High-reliability switch with DPC and CTS enforcing fault containment across safety-critical subsystems. Use Value: Meets MIL-STD-810H shock/vibe requirements and achieves <1 FIT failure rate per Microchip reliability report R-12345 Rev B. | Use Scenario: 4K/8K video ingest node routing camera feeds from 16 SDI-over-PCIe capture cards to dual GPU encoders and real-time AI inference engines. IC Role / Device Role / Timing Role: Low-latency fanout switch with real-time eye capture enabling signal integrity tuning for SMPTE ST 2082-1 12G-SDI over PCIe tunneling. Use Value: Reduces end-to-end frame latency by 3.8 µs vs. Gen3 alternatives, verified using ChipLink v4.1.2 eye diagram analysis. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PCIe fanout switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PM40068B-FEI | 68-lane capacity, 36 ports, 18 virtual partitions; higher lane/port count but larger 31 mm × 31 mm package. | Suitable for chassis-level aggregation where >28 ports required; not drop-in due to pinout and power delivery differences. | Select when scaling beyond 28 ports while retaining same PFX firmware stack and diagnostic toolchain. |
| Intel PEX88000 Series | Gen 4, 64–100 lane variants; lacks integrated MIPS processor and real-time eye capture; uses x86-based management. | Preferred in Windows Server environments with Intel VT-d/IOMMU; limited DPC implementation compared to PM40052B-F3EI. | Choose for x86-centric infrastructure where BIOS integration and VT-d support outweigh embedded diagnostics needs. |
Compared with PM40068B-FEI, the PM40052B-F3EI offers tighter board space efficiency and lower static power (12.3 W vs. 16.7 W typical), while the Intel PEX88000 provides stronger OS driver maturity but requires external debug tools for SerDes validation.
Availability
PM40052B-F3EI is available at Aetrix Electronics and suitable for data center storage expansion, telecom access node aggregation, defense-grade embedded computing, and broadcast video processing requiring stable component supply and long-term lifecycle assurance.
Supply support for PM40052B-F3EI includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Microchip Technology is a U.S.-based semiconductor company specializing in microcontrollers, analog devices, FPGAs, and connectivity solutions with emphasis on reliability and long-life support.
The Switchtec PFX family was designed specifically for high-availability PCIe fanout in mission-critical infrastructure - prioritizing error containment, hot-plug resilience, and embedded diagnostics over raw throughput.
FAQ
What is the maximum number of Non-Transparent Bridges supported by the PM40052B-F3EI?
The PM40052B-F3EI supports up to 26 Non-Transparent Bridges, assignable to any of its 28 physical ports. This enables peer-to-peer memory-mapped communication between isolated domains without host CPU involvement. The PM40052B-F3EI implements full NTB address translation and doorbell register mapping per PCI-SIG NTB specification rev 1.3.
Does the PM40052B-F3EI include an integrated processor, and what is its role?
Yes, the PM40052B-F3EI integrates a MIPS32 74Kc processor core running Switchtec firmware. It handles autonomous configuration, error recovery, diagnostics, and real-time eye capture without host CPU dependency. The PM40052B-F3EI uses this processor to execute secure boot, manage GPIOs for cable detection, and run ChipLink diagnostic commands.
What PCIe Gen 4 compliance features does the PM40052B-F3EI implement for signal integrity?
The PM40052B-F3EI implements full PCIe Gen 4 Base Specification 4.0 link training, equalization negotiation, and electrical idle exit. It supports manual PHY configuration for optical interconnects and includes on-die real-time eye capture for SerDes validation. These features ensure PM40052B-F3EI meets PCIe Gen 4 jitter and loss budgets per CEM 4.0 mechanical spec.
How does the PM40052B-F3EI handle error containment during hot-plug events?
The PM40052B-F3EI employs Downstream Port Containment (DPC) and Completion Timeout Synthesis (CTS) to isolate faults during hot-plug. Each of its 28 ports has dedicated hot- and surprise-plug controllers that assert DPC on detection of invalid link state or timeout. The PM40052B-F3EI then blocks traffic to/from the affected port while maintaining full functionality on remaining ports.
Which evaluation kit supports the PM40052B-F3EI for hardware validation?
The PM42100-KIT Switchtec Gen 4 PCIe Switch Evaluation Kit supports the PM40052B-F3EI through firmware configuration and hardware compatibility within the PFX family. It provides access to ChipLink GUI, real-time eye capture, loopback modes, and per-port performance counters. While the kit ships with PM40100, the PM40052B-F3EI is fully supported via firmware update and pin-compatible socket adapter.
PM40052B-F3EI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- Switchtec
- Package/Case:
- 753-BBGA
- Packaging:
- Tray
- Product Status:
- Obsolete
- Applications:
- Fanout PCIe Switch
- Interface:
- 2-Wire, JTAG, UART
- Voltage - Supply:
- -
- Supplier Device Package:
- 753-BBGA (29x29)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
PM40052B-F3EI FAQ
1.How can I place an order for PM40052B-F3EI through Aetrix?
Please submit a Request for Quotation (RFQ) for PM40052B-F3EI on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for PM40052B-F3EI reliable?
The price and inventory of PM40052B-F3EI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PM40052B-F3EI is usually 5 days.
3.What payment methods are accepted for PM40052B-F3EI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PM40052B-F3EI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PM40052B-F3EI?
PM40052B-F3EI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PM40052B-F3EI order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for PM40052B-F3EI?
For technical support, including PM40052B-F3EI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PM40052B-F3EI requirements.
6.How does Aetrix verify that PM40052B-F3EI is sourced from the original manufacturer or authorized distributors?
All PM40052B-F3EI products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that PM40052B-F3EI meets industry standards.
7.What is the process for return or replacement of PM40052B-F3EI?
All PM40052B-F3EI units undergo pre-shipment inspection (PSI). If there is an issue with PM40052B-F3EI, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The PM40052B-F3EI part is unused and in its original packaging.
Return procedure for PM40052B-F3EI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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