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Diodes Incorporated PI7C9X2G608ELBZXAE
- Part No.:
- PI7C9X2G608ELBZXAE
- Manufacturer:
- Diodes Incorporated
- Category:
- Specialized
- Package:
- 136-VFQFN Dual Rows, Exposed Pad
- Datasheet:
-
PI7C9X2G608ELBZXAE.pdf
- Description:
- IC INTERFACE SPECIALIZED 136AQFN
- Quantity:
- Payment:
- Shipping:
Inventory:105
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Product details
Overview
PI7C9X2G608EL from Diodes Incorporated is a PCI Express Gen 2 packet switch with 6 configurable ports and 8 total lanes, supporting transparent bridging, hot-plug capability, and full PCIe 2.0 compliance (5.0 GT/s). It implements full transaction layer routing, virtual channel arbitration, and integrated EEPROM/SMBus/I²C configuration interfaces. Used in embedded computing backplanes and industrial I/O expansion systems requiring deterministic low-latency switching.
For engineers reviewing the PI7C9X2G608EL datasheet, PI7C9X2G608EL pinout, PI7C9X2G608EL application, or PI7C9X2G608EL equivalent, key selection criteria include port-lane mapping flexibility, PCIe 2.0 link training robustness, register-level configuration via SMBus/I²C, and thermal performance in 136-pin AQFN packages under sustained 8-lane traffic.
Technical Context
This switch operates at 5.0 GT/s per lane with full Gen 2 electrical compliance, including de-emphasis control, receiver equalization, and transmitter swing calibration. Its physical layer supports automatic lane reversal, polarity inversion, and receiver detection across all 8 lanes.
The transaction layer implements TLP decapsulation/encapsulation, credit-based flow control per VC, and strict ordering rules for memory, I/O, and configuration transactions. Routing decisions are made using address-based, ID-based, and broadcast forwarding modes with programmable TC/VC mapping.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PCIe Generation | Gen 2 (5.0 GT/s) - Full backward compatibility with Gen 1; enables 4 Gbps per lane raw throughput. |
| Port Count | 6 configurable ports - Supports flexible topologies: 1×4 + 5×1, 2×2 + 4×1, or 1×8 (upstream only), enabling scalable I/O expansion. |
| Lane Count | 8 total lanes - Dynamically assignable across ports; no fixed lane allocation required at hardware level. |
| Switching Mode | Transparent bridge - No address translation needed; preserves native PCIe enumeration and configuration space visibility. |
| Configuration Interface | SMBus/I²C + EEPROM - Enables firmware-less boot-time initialization and runtime register access without host CPU involvement. |
| Power Management | ASPM L0s/L1 support - Reduces dynamic power during idle link states while maintaining sub-10 µs wake latency. |
| Operating Temperature | –40°C to +85°C - Qualified for industrial ambient environments without derating. |
Pinout & Package
PI7C9X2G608EL is housed in a 136-pin Advanced Quad Flat No-lead (AQFN) package with 0.4 mm pitch, 12 mm × 12 mm body size, and exposed thermal pad for enhanced heat dissipation in high-throughput switching applications.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK_IN | Reference clock input | Accepts 100 MHz differential LVDS or single-ended CMOS; drives internal PLL for PCIe timing recovery. |
| PERST# | Primary reset signal | Active-low asynchronous reset that clears configuration registers and forces re-initialization of all PCIe links. |
| SCL / SDA | SMBus/I²C interface | Two-wire serial bus for runtime register read/write; supports multi-drop configuration with slave addressing. |
| EEPROM_CLK / EEPROM_DATA | EEPROM interface | Dedicated 2-wire interface for boot-time configuration loading; auto-mapped to PCIe configuration space on power-up. |
| PRSNT#_x | Hot-plug presence detect | Per-port active-low signal indicating mechanical insertion/removal; triggers PCIe hot-plug state machine transitions. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable port-lane mapping | Runtime reconfiguration of lane assignments across 6 ports without hardware change or power cycle. |
| Virtual Channel arbitration | Supports up to 8 VCs per port with weighted round-robin scheduling to prioritize time-critical traffic classes. |
| Integrated EEPROM + SMBus/I²C | Eliminates external configuration PROM; allows field-updatable settings via host or service processor. |
| Hot-plug support per port | Full PCIe-compliant hot-plug sequence execution (presence detect, power sequencing, link training) on individual ports. |
| Link power management (ASPM) | Hardware-enforced L0s/L1 entry/exit with automatic credit management to prevent deadlock during low-power transitions. |
Applications
| Industrial I/O Expansion | Embedded Computing Backplane |
|---|---|
Use Scenario: Modular PLC chassis with hot-swappable I/O modules connected via PCIe fabric. IC Role / Device Role / Timing Role: Central PCIe switch managing upstream CPU link and downstream module interconnects with deterministic latency. Use Value: Enables independent power cycling and firmware updates of I/O modules without resetting CPU or other modules. |
Use Scenario: Ruggedized COM Express or SMARC carrier board aggregating GPU, NVMe, and FPGA peripherals. IC Role / Device Role / Timing Role: Transparent PCIe bridge providing isolated, non-blocking paths between CPU and high-bandwidth peripherals. Use Value: Maintains native PCIe enumeration and BAR decoding while scaling bandwidth beyond direct CPU lane limits. |
| Medical Imaging Subsystem | Test & Measurement Equipment |
Use Scenario: Multi-sensor acquisition system with real-time image streaming from CT/MRI detector arrays. IC Role / Device Role / Timing Role: Low-jitter packet switch routing DMA transfers from multiple ADC/FPGA endpoints to host memory. Use Value: Guarantees bounded latency (< 200 ns per hop) and lossless delivery under sustained 8-lane traffic loads. |
Use Scenario: PXIe-based automated test equipment with synchronized digitizers, AWGs, and DMMs. IC Role / Device Role / Timing Role: PCIe Gen 2 switch enabling precise trigger distribution and timestamp correlation across instruments. Use Value: Supports hardware timestamp injection and cross-port trigger forwarding with sub-microsecond skew. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PCIe Gen 2 switching applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ASM1083 | Single-root, 2-port, 4-lane Gen 2 switch; no SMBus/I²C interface; requires external EEPROM. | Limited to simple root complex extension; lacks multi-port topology flexibility and runtime configurability. | Select when cost-sensitive, low-port-count designs require minimal feature set and external configuration control. |
| PI7C9X2G304BNDE | 4-port, 4-lane Gen 2 switch in 100-pin QFN; identical register map and firmware compatibility. | Lower lane count and port count; reduced thermal envelope; suitable for space-constrained edge nodes. | Select when system topology requires fewer lanes and smaller footprint, with seamless firmware migration path. |
Compared with ASM1083 and PI7C9X2G304BNDE, the PI7C9X2G608EL delivers higher port/lane scalability, integrated configuration interfaces, and industrial-grade thermal performance-making it optimal for modular, field-upgradable systems where topology adaptability and maintenance efficiency are critical.
Availability
PI7C9X2G608EL is available at Aetrix Electronics and suitable for industrial I/O expansion, embedded computing backplanes, medical imaging subsystems, and test & measurement equipment requiring stable component supply and long-term lifecycle assurance.
Supply support for PI7C9X2G608EL 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, headquartered in California, with design, manufacturing, and sales operations across Asia, Europe, and North America.
The PI7C9X2G608EL belongs to Diodes' ExtremeLo™ family of PCIe switches, engineered specifically for low-latency, high-reliability industrial and embedded applications demanding robust hot-plug, flexible port mapping, and simplified system integration.
FAQ
Does PI7C9X2G608EL support PCIe Gen 3?
No. The PI7C9X2G608EL is strictly compliant with PCIe Base Specification Rev 2.0 (5.0 GT/s) and does not support Gen 3 signaling (8.0 GT/s) or associated electrical requirements such as modified de-emphasis levels or receiver equalization profiles. Attempting Gen 3 operation will result in link training failure.
Can port-lane mapping be changed dynamically during system operation?
Yes. Port-lane mapping is fully programmable via configuration space registers (e.g., OPERATION MODE register at offset 98h) and takes effect after link retraining. This allows runtime adaptation to changing topology requirements without power cycling, provided the target lane configuration is electrically valid and supported by connected endpoints.
What is the function of the exposed thermal pad on the AQFN package?
The exposed thermal pad on the bottom of the 136-pin AQFN package must be soldered to a dedicated PCB copper pour connected to internal ground planes. It serves as the primary thermal conduction path, reducing junction-to-board thermal resistance to ≤12°C/W and enabling continuous operation at full 8-lane load within the –40°C to +85°C ambient range.
Is EEPROM configuration mandatory for initial operation?
No. EEPROM configuration is optional. The device boots into default mode with all ports enabled and basic lane mapping (1×4 + 5×1). EEPROM is used only to override defaults-such as custom port enable/disable states, lane assignments, or SMBus slave addresses-and is not required for functional PCIe link establishment.
PI7C9X2G608ELBZXAE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- GreenPacket™
- Package/Case:
- 136-VFQFN Dual Rows, Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- Packet Switch, 6-Port/8-Lane
- Interface:
- PCI Express
- Voltage - Supply:
- -
- Supplier Device Package:
- 136-aQFN (10x10)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
PI7C9X2G608ELBZXAE FAQ
1.How can I place an order for PI7C9X2G608ELBZXAE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI7C9X2G608ELBZXAE 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 PI7C9X2G608ELBZXAE reliable?
The price and inventory of PI7C9X2G608ELBZXAE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI7C9X2G608ELBZXAE is usually 5 days.
3.What payment methods are accepted for PI7C9X2G608ELBZXAE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI7C9X2G608ELBZXAE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI7C9X2G608ELBZXAE?
PI7C9X2G608ELBZXAE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI7C9X2G608ELBZXAE 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 PI7C9X2G608ELBZXAE?
For technical support, including PI7C9X2G608ELBZXAE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI7C9X2G608ELBZXAE requirements.
6.How does Aetrix verify that PI7C9X2G608ELBZXAE is sourced from the original manufacturer or authorized distributors?
All PI7C9X2G608ELBZXAE 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 PI7C9X2G608ELBZXAE meets industry standards.
7.What is the process for return or replacement of PI7C9X2G608ELBZXAE?
All PI7C9X2G608ELBZXAE units undergo pre-shipment inspection (PSI). If there is an issue with PI7C9X2G608ELBZXAE, 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 PI7C9X2G608ELBZXAE part is unused and in its original packaging.
Return procedure for PI7C9X2G608ELBZXAE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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