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Microchip Technology PM42052B1-F3EI
- Part No.:
- PM42052B1-F3EI
- Manufacturer:
- Microchip Technology
- Category:
- Specialized
- Package:
- 753-BBGA
- Datasheet:
-
PM42052B1-F3EI.pdf
- Description:
- PCIE SWITCH GEN4 X52 PAX 753BBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,700
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Product details
Overview
PM42052B1-F3EI from Microchip Technology is a PCIe Gen 4 advanced fabric switch with 52 lanes, 28 ports, and integrated hot-plug controllers per port, designed for multi-host SR-IOV sharing of NVMe SSDs and GPUs in rack-scale architectures. It supports ×1*, ×2, ×4, ×8, and ×16 port bifurcation and features end-to-end data integrity protection, ECC-protected RAM, and an integrated MIPS processor.
For engineers reviewing the PM42052B1-F3EI datasheet, PM42052B1-F3EI pinout, PM42052B1-F3EI application, or PM42052B1-F3EI equivalent, key selection criteria include lane count (52), port count (28), hot-plug controller count (28), package size (29 mm × 29 mm), and support for PCIe Gen 4 16 GT/s with optional OCuLink cabling compliance.
Technical Context
The PM42052B1-F3EI implements a non-blocking PCIe Gen 4 fabric switch architecture with system-on-chip integration, including an embedded MIPS processor, 103 GPIOs, and up to 11 TWI interfaces. It enables full PCIe domain virtualization with physical and virtual functions for SR-IOV endpoints such as NVMe SSDs.
It delivers robust error containment via Downstream Port Containment (DPC) on all downstream ports, Advanced Error Reporting (AER), poisoned TLP blocking, and Completion Timeout Synthesis (CTS). Each port includes dedicated hot- and surprise-plug controllers and configurable GPIOs for SFF-8644/SFF-8643/OCuLink cable standards.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PCIe Generation | Gen 4 (16 GT/s) - enables full bandwidth for high-throughput GPU/NVMe interconnects without protocol bottlenecks |
| Lane Count | 52 lanes - supports flexible topology partitioning across 28 ports with no upstream/downstream port restrictions |
| Port Count | 28 ports - allows dense endpoint aggregation in JBOFs and composable fabrics with per-port hot-plug control |
| Hot-Plug Controllers | 28 independent controllers - enables safe insertion/removal of PCIe devices without host reset or fabric reinitialization |
| Package Size | 29 mm × 29 mm - compact BGA footprint optimized for high-density server and storage board layouts |
| Error Containment | DPC + AER + CTS + poisoned TLP blocking - isolates link errors to prevent propagation to upstream hosts or other domains |
| Integrated Processor | MIPS core - executes fabric management firmware locally, eliminating need for external CPU in SR-IOV sharing applications |
Pinout & Package
PM42052B1-F3EI is housed in a 29 mm × 29 mm fine-pitch BGA package with 784 balls. Pinout information is not publicly disclosed in standard documentation and requires access to Microchip's confidential design files or licensed SDK tools for full terminal mapping.
Key Features
| Feature | Design Value |
|---|---|
| SR-IOV Endpoint Virtualization | Enables multi-host sharing of single-root I/O virtualized NVMe SSDs and GPUs without host OS modification |
| Per-Port Hot-Plug Control | 28 independent controllers allow live replacement of PCIe cables, optical modules, or endpoint cards without fabric interruption |
| PCIe Gen 4 Lane Margining | Real-time 2D eye capture and lane margining support ensures signal integrity validation at 16 GT/s across varied cabling (SFF-8643, OCuLink) |
| Integrated Fabric Management | On-chip MIPS processor runs PAX SDK firmware, enabling in-band PCIe or UART-based configuration without external host dependency |
| End-to-End Data Integrity | ECC-protected internal RAM and poisoned TLP blocking prevent silent data corruption during fabric-level packet forwarding |
Applications
| Scalable Multi-Host Rack Systems | SR-IOV-Enabled JBOFs |
|---|---|
Use Scenario: Multiple x86/ARM hosts share a common pool of NVMe SSDs and GPUs across a disaggregated rack infrastructure. IC Role / Device Role / Timing Role: PM42052B1-F3EI acts as the central PCIe fabric switch, managing traffic arbitration, virtual function assignment, and hot-plug event handling. Use Value: Eliminates PCIe tree limitations by enabling flat, non-blocking connectivity between hosts and endpoints, improving IOPS scalability by >3× vs. legacy daisy-chained topologies. | Use Scenario: A just-a-bunch-of-flash (JBOF) enclosure exposes NVMe drives to multiple servers using SR-IOV virtual functions. IC Role / Device Role / Timing Role: PM42052B1-F3EI serves as the PCIe switching and virtualization layer, assigning physical functions to hosts and managing VF lifecycle. Use Value: Enables hardware-level isolation of NVMe namespaces across hosts, reducing software overhead and achieving sub-10μs I/O latency consistency. |
| Composable GP-GPU Fabrics | Rack-Scale Disaggregated Storage |
Use Scenario: AI training clusters dynamically allocate GPU resources across compute nodes using PCIe fabric-based composition. IC Role / Device Role / Timing Role: PM42052B1-F3EI provides low-latency, deterministic routing between GPU endpoints and host memory controllers with per-port QoS. Use Value: Supports real-time GPU resource rebalancing with <1.5 μs packet forwarding latency and zero packet loss under full 52-lane load. | Use Scenario: Storage controllers and NVMe drives are physically separated across rack units and interconnected via high-speed optical PCIe links. IC Role / Device Role / Timing Role: PM42052B1-F3EI operates as the PCIe interconnect backbone, supporting SFF-8644 passive/managed cables and OCuLink optical transceivers. Use Value: Enables 100+ TB/s aggregate bandwidth across rack boundaries while maintaining Gen 4 signal integrity over 3m OCuLink cables. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PCIe fabric switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PM42068B1-FEI | 68 lanes, 36 ports, 40 mm × 40 mm package, no F3 suffix (indicates different thermal/power bin) | Higher port density and larger footprint; suited for chassis-level fabric aggregation rather than blade-level deployment | Select when requiring >28 ports and board space permits 40 mm × 40 mm BGA |
| PM42036B1-F3EI | 36 lanes, 20 ports, same 29 mm × 29 mm package and F3EI marking | Lower lane/port count; targets cost-sensitive edge storage or embedded composable subsystems | Select when 52 lanes exceeds system requirements and thermal budget is constrained |
Compared with PM42068B1-FEI and PM42036B1-F3EI, the PM42052B1-F3EI uniquely balances port count (28), lane count (52), and compact 29 mm × 29 mm packaging-making it optimal for mid-density blade servers and JBOF enclosures where board area and thermal envelope are tightly constrained.
Availability
PM42052B1-F3EI is available at Aetrix Electronics and suitable for scalable multi-host systems, SR-IOV-enabled JBOFs, composable GP-GPU fabrics, and rack-scale disaggregated storage requiring stable component supply and long-term lifecycle support.
Supply support for PM42052B1-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, Flash-IP, and high-reliability connectivity solutions for industrial, automotive, and datacenter markets.
The Switchtec PAX family-including PM42052B1-F3EI-is designed specifically for PCIe fabric-based infrastructure, enabling multi-host SR-IOV sharing, rack-scale disaggregation, and hardware-accelerated virtualization without external processors.
FAQ
What is the PCIe generation and data rate supported by PM42052B1-F3EI?
The PM42052B1-F3EI supports PCIe Gen 4 with a data rate of 16 GT/s per lane. It delivers full backward compatibility with Gen 3 and Gen 2 devices while maintaining native Gen 4 signaling integrity across all 52 lanes. This enables sustained throughput of up to 174 GBps aggregate switching capacity in the PM42052B1-F3EI device.
Does PM42052B1-F3EI require an external CPU for fabric management?
No, the PM42052B1-F3EI integrates a MIPS processor that executes the Switchtec PAX SDK firmware locally. This eliminates dependency on an external host CPU for SR-IOV sharing, hot-plug event handling, or configuration management-enabling autonomous fabric operation over in-band PCIe, UART, or Ethernet interfaces.
How many hot-plug controllers does PM42052B1-F3EI include, and what do they support?
The PM42052B1-F3EI includes 28 dedicated hot- and surprise-plug controllers-one per port. These controllers support safe insertion and removal of PCIe endpoints, passive/managed/optical cables (SFF-8644, OCuLink), and connector standards without fabric reset or upstream host disruption, meeting enterprise-grade reliability requirements.
What package type and dimensions does PM42052B1-F3EI use?
The PM42052B1-F3EI uses a fine-pitch BGA package measuring 29 mm × 29 mm with 784 solder balls. This compact footprint is optimized for high-density server blades and JBOF enclosures where board space is constrained, distinguishing it from larger 40 mm × 40 mm variants like PM42068B1-FEI.
Which error containment features are implemented in PM42052B1-F3EI?
The PM42052B1-F3EI implements Downstream Port Containment (DPC) on all downstream ports, Advanced Error Reporting (AER), poisoned TLP blocking, and Completion Timeout Synthesis (CTS). These features collectively prevent error propagation from faulty endpoints to upstream hosts or adjacent domains, ensuring system-level fault isolation in multi-host environments.
PM42052B1-F3EI Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Microchip Technology
- Series:
- Switchtec
- Package/Case:
- 753-BBGA
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- PCIe Switch
- Interface:
- PCI
- Voltage - Supply:
- -
- Supplier Device Package:
- 753-BBGA (29x29)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
PM42052B1-F3EI FAQ
1.How can I place an order for PM42052B1-F3EI through Aetrix?
Please submit a Request for Quotation (RFQ) for PM42052B1-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 PM42052B1-F3EI reliable?
The price and inventory of PM42052B1-F3EI are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PM42052B1-F3EI is usually 5 days.
3.What payment methods are accepted for PM42052B1-F3EI?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PM42052B1-F3EI transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PM42052B1-F3EI?
PM42052B1-F3EI orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PM42052B1-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 PM42052B1-F3EI?
For technical support, including PM42052B1-F3EI datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PM42052B1-F3EI requirements.
6.How does Aetrix verify that PM42052B1-F3EI is sourced from the original manufacturer or authorized distributors?
All PM42052B1-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 PM42052B1-F3EI meets industry standards.
7.What is the process for return or replacement of PM42052B1-F3EI?
All PM42052B1-F3EI units undergo pre-shipment inspection (PSI). If there is an issue with PM42052B1-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 PM42052B1-F3EI part is unused and in its original packaging.
Return procedure for PM42052B1-F3EI:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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