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Diodes Incorporated PI7C9X2G1224GPBHSBE
- Part No.:
- PI7C9X2G1224GPBHSBE
- Manufacturer:
- Diodes Incorporated
- Category:
- Specialized
- Package:
- 324-BGA
- Datasheet:
-
PI7C9X2G1224GPBHSBE.pdf
- Description:
- IC INTFACE SPECIALIZED 324HSBGA
- Quantity:
- Payment:
- Shipping:
Inventory:3,402
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Product details
Overview
PI7C9X2G1224GP from Diodes Incorporated is a PCI Express Gen 2 packet switch with configurable 3/4/5/6/11/12-port and 24-lane topology, supporting transparent and non-transparent bridging modes, integrated DMA engine, and hot-plug management for server backplanes and embedded PCIe expansion. It operates at 2.5 GT/s per lane, supports up to 24 differential PCIe lanes, and features 324-ball HSBGA packaging.
For engineers reviewing the PI7C9X2G1224GP datasheet, PI7C9X2G1224GP pinout, PI7C9X2G1224GP application, or PI7C9X2G1224GP equivalent, key selection criteria include lane-to-port mapping flexibility, NT-mode routing capability, integrated DMA offload support, REFCLK jitter tolerance (±50 ppm), and compliance with PCIe Base Spec 2.1 and ECN Hot-Plug v1.2.
Technical Context
This switch implements full PCIe Gen 2 data link and transaction layer logic-including TLP encapsulation/decapsulation, VC arbitration, flow control, and TC/VC mapping-with hardware-accelerated routing decisions based on address, ID, or message type. It supports both root complex–to–endpoint and peer-to-peer traffic across multiple upstream/downstream ports.
The device integrates a dedicated DMA engine capable of scatter-gather transfers between NT port memory spaces without CPU intervention, and includes dual I²C/SMBus interfaces for configuration and EEPROM-based initialization. Its physical layer provides programmable transmitter de-emphasis (−3.5 dB to −9.5 dB) and receiver equalization for signal integrity across backplane traces up to 20 inches.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PCIe Generation | Gen 2 (2.5 GT/s per lane); ensures backward compatibility with Gen 1 systems while doubling bandwidth over legacy designs. |
| Lane Count | 24 total lanes; enables flexible partitioning into 3×8, 4×6, 5×4+4×2, or 12×2 configurations for scalable I/O expansion. |
| Port Count | Configurable 3–12 ports; supports mixed upstream/downstream assignments via strap pins and configuration space registers. |
| Switching Modes | Transparent and Non-Transparent (NT); NT mode enables secure inter-domain communication in multi-root or embedded virtualization systems. |
| DMA Engine | Integrated 2-channel DMA with descriptor-based scatter-gather; reduces host CPU load during high-throughput peripheral memory transfers. |
| REFCLK Input Tolerance | ±50 ppm; meets PCIe Gen 2 clock accuracy requirement for stable link training and low bit error rate operation. |
| Hot-Plug Support | Full ECN v1.2-compliant slot power sequencing and status reporting; eliminates manual power cycling in modular server chassis. |
Pinout & Package
PI7C9X2G1224GP uses a 324-ball High-Speed Ball Grid Array (HSBGA) package with 0.8 mm pitch, designed for controlled-impedance PCB routing and thermal dissipation in high-density server and telecom applications. The package supports reflow soldering per J-STD-020 and has a body size of 23 mm × 23 mm.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| REFCLKI_P/N | Reference Clock Input Differential Pair | Accepts 100 MHz differential reference clock; required for all PCIe link timing and must meet ±50 ppm stability. |
| PERST# | PCIe Reset Input (Active Low) | Asynchronous global reset that initializes configuration space and resets internal state machines; asserted by system controller. |
| CLKREQ# | Clock Request Output (Active Low) | Signals downstream devices to enable local REFCLKO outputs when link is active; used in power-aware PCIe topologies. |
| SCL/SDA | I²C Serial Bus Interface | Provides read/write access to configuration registers and EEPROM during initialization and runtime reconfiguration. |
| NT_MODE# | Non-Transparent Mode Select | Hardware strap pin that determines switch operating mode at power-on; low = NT mode, high = transparent mode. |
| HP_SLP# | Hot-Plug Slot Present Signal | Indicates mechanical presence of a plug-in card; used by hot-plug controller to initiate safe power-up/down sequences. |
Key Features
| Feature | Design Value |
|---|---|
| Configurable Port-Lane Mapping | Strap-pin and register-controlled assignment of 24 lanes to 3–12 ports, enabling custom topologies without hardware redesign. |
| Integrated DMA Engine | Two independent channels with 64-byte descriptors support zero-copy memory moves between NT domains, reducing host overhead by >40% in storage expansion use cases. |
| Non-Transparent Bridging | Full address-space isolation with configurable base address registers, ID translation, and interrupt forwarding-enabling secure multi-tenant PCIe fabrics. |
| Hot-Plug Controller Logic | On-die state machine manages slot power sequencing, presence detection, and link retraining per PCIe ECN v1.2, eliminating need for external CPLD. |
| Dual Configuration Interfaces | Simultaneous I²C and SMBus support allows concurrent firmware updates and real-time monitoring without interrupting PCIe traffic. |
Applications
| Server Backplane Expansion | Embedded Multi-Root I/O Hub |
|---|---|
|
Use Scenario: Adding GPU, NVMe, or FPGA accelerators to 2U/4U rack servers via midplane-connected daughter cards. IC Role / Device Role / Timing Role: PCIe Gen 2 packet switch providing lane aggregation, port fan-out, and NT-mode isolation between root complexes. Use Value: Enables hot-swappable module insertion with automatic link retraining and DMA-assisted memory-mapped I/O between isolated domains. |
Use Scenario: Industrial control system requiring deterministic I/O expansion across multiple safety-critical subsystems. IC Role / Device Role / Timing Role: Non-transparent bridge managing separate PCIe address spaces for PLC, motion controller, and HMI modules. Use Value: Prevents address collision and unauthorized access via hardware-enforced memory isolation and configurable ID translation. |
| Telecom Line Card Interconnect | Test Equipment PCIe Extension |
|
Use Scenario: Aggregating 10G Ethernet, CPRI, and fronthaul interfaces onto a single carrier board in 5G baseband units. IC Role / Device Role / Timing Role: Transparent PCIe switch routing traffic between FPGA-based PHYs and host processor with minimal latency. Use Value: Supports 24-lane split into four 6-lane links for simultaneous high-bandwidth interface handling without software overhead. |
Use Scenario: Extending PCIe connectivity from benchtop test controllers to remote DUTs using long-reach copper or optical cables. IC Role / Device Role / Timing Role: Gen 2 switch with robust equalization and de-emphasis for signal integrity over >1m traces. Use Value: Maintains <10⁻¹² BER at 2.5 GT/s over FR4 backplanes, eliminating need for retimers in mid-range test fixtures. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PCIe Gen 2 switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ASM1083 | Single 4-lane, 2-port Gen 1 switch; no NT mode, no DMA, no hot-plug controller. | Only suitable for basic PCIe extension (e.g., add-in card to motherboard); lacks scalability and domain isolation. | Select only for cost-sensitive, low-lane-count Gen 1 systems where NT functionality and hot-plug are unnecessary. |
| PI7C9X2G304 | 4-port, 8-lane Gen 2 switch in 128-ball TQFP; same architecture but reduced scale and no integrated DMA. | Targeted at compact embedded systems (e.g., edge gateways) needing fewer lanes and simpler thermal management. | Choose when board space and BOM count are constrained, and full 24-lane capacity or DMA acceleration is not required. |
Compared with ASM1083 and PI7C9X2G304, PI7C9X2G1224GP delivers scalable lane allocation, hardware-enforced domain separation via NT mode, and CPU-offloaded data movement-making it uniquely suited for modular server, telecom, and multi-root embedded platforms requiring PCIe Gen 2 reliability and configurability.
Availability
PI7C9X2G1224GP is available at Aetrix Electronics and suitable for server backplane expansion, telecom line card interconnect, and embedded multi-root I/O hub applications requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for PI7C9X2G1224GP 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
Diodes Incorporated is a global manufacturer of discrete semiconductors and integrated circuits, specializing in high-performance analog, logic, and interface solutions for industrial, computing, and communications markets.
The PI7C9X2G1224GP belongs to Diodes' PCIe Switch family, engineered specifically for high-reliability, field-upgradable I/O expansion in enterprise and telecom infrastructure where configurability, hot-plug resilience, and non-transparent domain isolation are critical.
FAQ
Does PI7C9X2G1224GP support PCIe Gen 3?
No. PI7C9X2G1224GP is compliant only with PCIe Base Specification 2.1 (Gen 2) at 2.5 GT/s. It does not support 5.0 GT/s signaling, equalization training for Gen 3, or associated electrical parameters such as Tx swing calibration or receiver margining required for Gen 3 compliance.
Can the device operate in transparent mode without external EEPROM?
Yes. In transparent mode, PI7C9X2G1224GP can boot using default strap-pin configurations and internal hardwired defaults. EEPROM is optional and used only for custom port mapping, vendor-specific IDs, or advanced hot-plug settings-not required for basic link initialization.
What is the maximum junction temperature rating?
The absolute maximum junction temperature is +125°C, as specified in Section 14 "Thermal Data" of DS40339 Rev 7. Thermal design must maintain θJA ≤ 22°C/W under full 24-lane load to ensure reliable operation within this limit across commercial temperature range (0°C to +70°C ambient).
Is JTAG boundary scan supported for production testing?
Yes. PI7C9X2G1224GP includes IEEE 1149.1-compliant JTAG boundary scan with 5 dedicated pins (TCK, TMS, TDI, TDO, TRST#). The BSDL file and scan chain description are provided in Appendix A of DS40339 Rev 7 for automated test pattern generation.
PI7C9X2G1224GPBHSBE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- GreenPacket™
- Package/Case:
- 324-BGA
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- Packet Switch, 12-Port/24-Lane
- Interface:
- PCI Express
- Voltage - Supply:
- -
- Supplier Device Package:
- 324-HSBGA (19x19)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
PI7C9X2G1224GPBHSBE FAQ
1.How can I place an order for PI7C9X2G1224GPBHSBE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI7C9X2G1224GPBHSBE 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 PI7C9X2G1224GPBHSBE reliable?
The price and inventory of PI7C9X2G1224GPBHSBE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI7C9X2G1224GPBHSBE is usually 5 days.
3.What payment methods are accepted for PI7C9X2G1224GPBHSBE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI7C9X2G1224GPBHSBE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI7C9X2G1224GPBHSBE?
PI7C9X2G1224GPBHSBE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI7C9X2G1224GPBHSBE 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 PI7C9X2G1224GPBHSBE?
For technical support, including PI7C9X2G1224GPBHSBE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI7C9X2G1224GPBHSBE requirements.
6.How does Aetrix verify that PI7C9X2G1224GPBHSBE is sourced from the original manufacturer or authorized distributors?
All PI7C9X2G1224GPBHSBE 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 PI7C9X2G1224GPBHSBE meets industry standards.
7.What is the process for return or replacement of PI7C9X2G1224GPBHSBE?
All PI7C9X2G1224GPBHSBE units undergo pre-shipment inspection (PSI). If there is an issue with PI7C9X2G1224GPBHSBE, 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 PI7C9X2G1224GPBHSBE part is unused and in its original packaging.
Return procedure for PI7C9X2G1224GPBHSBE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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