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Diodes Incorporated PI7C9X2G404SLBQFDE
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- Part No.:
- PI7C9X2G404SLBQFDE
- Manufacturer:
- Diodes Incorporated
- Category:
- Specialized
- Package:
- 128-LQFP
- Datasheet:
-
PI7C9X2G404SLBQFDE.pdf
- Description:
- IC INTERFACE SPECIALIZED 128LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:587
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Product details
Overview
PI7C9X2G404SLBQFDE from Diodes Incorporated is an AEC-Q100 Grade 3 qualified PCIe 2.1 packet switch with four downstream ports (x1 each) and one upstream port (x1 or x2), supporting 4-lane topology, 512-byte max payload, and automotive temperature range (−40°C to +85°C). It serves as a lane-expansion hub between automotive SoCs/FPGAs and peripheral endpoints in ADAS and infotainment systems.
For engineers reviewing the PI7C9X2G404SLBQFDE datasheet, PI7C9X2G404SLBQFDE pinout, PI7C9X2G404SLBQFDE application, or PI7C9X2G404SLBQFDE equivalent, key selection criteria include PCIe 2.1 compliance, L0s/L1 link power management, integrated 100 MHz clock buffer per downstream port, support for ACS and SR-IOV via Address Translation packets, and 150 ns typical cut-through latency.
Technical Context
This switch implements PCI Express Base Specification Rev 2.1 with full support for data poisoning, end-to-end CRC, advanced error reporting, and IEEE 1149.1 JTAG debug interface. It enables peer-to-peer traffic control via Access Control Services and supports SR-IOV virtualization through Address Translation (AT) packets.
Power management includes hierarchical states: Link-level (L0, L0s, L1, L2/L3Ready, L3) and Device-level (D0, D3Hot, D3Cold with 3.3 V Aux), plus dynamic clock gating when downstream ports enter L1 or ASPM L1. Latency is optimized via configurable cut-through (default) or store-and-forward forwarding modes.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| PCIe Revision | Compliant with PCI Express Base Spec Rev 2.1 - ensures interoperability with Gen2 root complexes and endpoints. |
| Port Configuration | 1 upstream (x1/x2) + 4 downstream (x1 each) - enables fan-out from single-lane or dual-lane host interfaces to multiple peripherals. |
| Max Payload Size | 512 bytes - matches standard PCIe MTU for efficient memory-mapped I/O and DMA transfers. |
| Typical Power Dissipation | 650 mW in L0, 200 mW in L1 - enables thermal design within automotive LQFP package constraints. |
| Latency (Cut-through) | 150 ns typical - minimizes end-to-end delay for time-critical ADAS sensor data routing. |
| Operating Temperature | −40°C to +85°C - meets AEC-Q100 Grade 3 requirements for under-hood and cabin-mounted ECUs. |
| MTBF | 50,927,360 hours - quantifies long-term reliability for safety-critical vehicle networks. |
Pinout & Package
Package: 128-pin LQFP, 14 mm × 14 mm, 0.4 mm pitch, RoHS-compliant and Pb-free (E suffix).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLKIN | Reference Clock Input | Accepts 100 MHz differential PCIe reference clock; required for link initialization and timing recovery. |
| PERST# | PCIe Reset Input | Active-low asynchronous reset controlling configuration space and link training state machine. |
| CLKOUT[0:3] | Downstream Clock Outputs | Four independent 100 MHz LVDS clock outputs - each drives one downstream port's reference clock, eliminating external buffers. |
| PRSNT#_UP / PRSNT#_DN[0:3] | Presence Detection | Hot-plug presence detect inputs for upstream and each downstream slot - enables dynamic topology discovery. |
| WAKE# | Wake Signal Output | Open-drain output asserting wake event to host during D3cold exit - supports ACPI-based system resume. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 100 MHz clock buffer per downstream port | Eliminates need for four external clock ICs, reducing BOM count and board area in multi-peripheral automotive modules. |
| Support for Cut-through and Store-and-Forward modes | Enables deterministic low-latency forwarding (cut-through) or full-packet integrity checking (store-and-forward) based on system safety requirements. |
| ACS (Access Control Services) support | Enforces isolation between peer-to-peer transactions - critical for secure partitioning in mixed-criticality domains (e.g., infotainment + instrument cluster). |
| Address Translation (AT) packets for SR-IOV | Allows virtual functions to share physical PCIe resources - enables scalable virtualized telematics gateways with hardware-enforced resource boundaries. |
| Optimized Buffer Flush Fill (OBFF) | Reduces platform wake events by allowing endpoint-initiated wake only when buffer status changes - improves system-wide power efficiency in always-on vehicle networks. |
Applications
| ADAS Sensor Aggregation | Automotive Infotainment Gateway |
|---|---|
Use Scenario: Aggregating video streams from multiple cameras and radar sensors into a central domain controller. IC Role / Device Role / Timing Role: PCIe packet switch providing deterministic, low-latency lane expansion from SoC to distributed sensors. Use Value: 150 ns cut-through latency ensures sub-millisecond synchronization across camera feeds, enabling real-time object fusion. | Use Scenario: Connecting head-unit MCU to multiple peripherals including display controller, audio codec, and wireless modem. IC Role / Device Role / Timing Role: PCIe fan-out hub enabling concurrent high-bandwidth access without arbitration bottlenecks. Use Value: Four independent x1 downstream links eliminate PCIe switch contention, sustaining >1.5 Gbps aggregate throughput for HD video playback and OTA updates. |
| V2X Telematics Hub | Secure Vehicle Security Module |
Use Scenario: Integrating cellular (LTE/5G), DSRC/C-V2X, and GNSS modules into a unified telematics ECU. IC Role / Device Role / Timing Role: PCIe interconnect switch supporting hot-plug detection and robust error handling for field-upgradable comms modules. Use Value: End-to-end CRC and data poisoning prevent corrupted firmware updates from propagating across communication subsystems. | Use Scenario: Isolating secure boot engine, HSM, and encrypted storage in a tamper-resistant security domain. IC Role / Device Role / Timing Role: PCIe switch enforcing strict traffic separation via ACS and SR-IOV Address Translation. Use Value: Hardware-enforced peer-to-peer transaction blocking prevents unauthorized access between security-critical peripherals and general-purpose subsystems. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar PCIe 2.1 packet switch applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| PI7C9X2G404ELQZXAEX+ | aQFN-136 package (10 mm × 10 mm); higher thermal conductivity; no exposed pad in LQFP variant | Better suited for thermally constrained modules where PCB real estate is limited but airflow is restricted | Select when board layout requires smaller footprint and thermal performance outweighs manual soldering complexity. |
| Microchip LAN9668 | Integrated Ethernet switch + PCIe 2.0 bridge; not PCIe-native switching; lacks ACS, AT, OBFF, and AEC-Q100 qualification | Targets cost-sensitive non-safety gateway applications without functional safety or virtualization needs | Choose only for non-automotive industrial gateways where PCIe switching is secondary to Ethernet aggregation. |
Compared with PI7C9X2G404ELQZXAEX+, the SLBQFDE offers identical electrical functionality but trades thermal performance for easier assembly; versus LAN9668, it delivers certified automotive PCIe switching with hardware security features essential for ISO 26262-compliant domains.
Availability
PI7C9X2G404SLBQFDE is available at Aetrix Electronics and suitable for ADAS sensor aggregation, automotive infotainment gateways, and V2X telematics platforms requiring stable component supply across extended product lifecycles.
Supply support for PI7C9X2G404SLBQFDE 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 focused on high-performance analog, logic, and connectivity solutions for automotive, industrial, and computing markets.
The PI7C9X2G404xxQ family belongs to Diodes' automotive PCIe switch product line, engineered specifically to meet AEC-Q100 Grade 3 requirements and enable scalable, low-power, safety-aware expansion of PCIe interfaces in next-generation vehicle architectures.
FAQ
Is PI7C9X2G404SLBQFDE pin-compatible with other members of the PI7C9X2G404xxQ family?
Yes - all PI7C9X2G404xxQ variants share identical pinouts within the same package type. The SLBQFDE (128-pin LQFP) is pin-compatible with PI7C9X2G404SLQ and PI7C9X2G304SLBQ, enabling drop-in replacement across 3- and 4-port configurations without PCB redesign.
Does PI7C9X2G404SLBQFDE support PCIe 3.0 or higher?
No - it is compliant only with PCI Express Base Specification Revision 2.1. It does not support 8 GT/s signaling, 128-byte FLIT encoding, or LTSSM extensions introduced in PCIe 3.0+. Systems requiring Gen3 bandwidth must use alternate switches such as the Diodes PI7C9X2G604 series.
What clock sources are required for PI7C9X2G404SLBQFDE operation?
A single 100 MHz differential reference clock must be applied to CLKIN. The device internally generates and distributes buffered 100 MHz clocks to all four downstream ports via dedicated CLKOUT[0:3] pins - no external clock generators or fanout buffers are needed for downstream endpoints.
How is power management implemented during vehicle sleep mode?
In D3Cold with 3.3 V Aux power applied, the device retains configuration space and wakes on WAKE# assertion. Downstream ports automatically enter idle state when inactive, and clock distribution is disabled in L1/ASPM L1 - reducing quiescent current to <50 µA while preserving link context for fast resume.
PI7C9X2G404SLBQFDE Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Diodes Incorporated
- Series:
- SlimLine®
- Package/Case:
- 128-LQFP
- Packaging:
- Tray
- Product Status:
- Active
- Applications:
- Packet Switch, 4-Port/4-Lane
- Interface:
- PCI Express
- Voltage - Supply:
- -
- Supplier Device Package:
- 128-LQFP (14x14)
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
PI7C9X2G404SLBQFDE FAQ
1.How can I place an order for PI7C9X2G404SLBQFDE through Aetrix?
Please submit a Request for Quotation (RFQ) for PI7C9X2G404SLBQFDE 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 PI7C9X2G404SLBQFDE reliable?
The price and inventory of PI7C9X2G404SLBQFDE are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for PI7C9X2G404SLBQFDE is usually 5 days.
3.What payment methods are accepted for PI7C9X2G404SLBQFDE?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for PI7C9X2G404SLBQFDE transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for PI7C9X2G404SLBQFDE?
PI7C9X2G404SLBQFDE orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your PI7C9X2G404SLBQFDE 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 PI7C9X2G404SLBQFDE?
For technical support, including PI7C9X2G404SLBQFDE datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your PI7C9X2G404SLBQFDE requirements.
6.How does Aetrix verify that PI7C9X2G404SLBQFDE is sourced from the original manufacturer or authorized distributors?
All PI7C9X2G404SLBQFDE 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 PI7C9X2G404SLBQFDE meets industry standards.
7.What is the process for return or replacement of PI7C9X2G404SLBQFDE?
All PI7C9X2G404SLBQFDE units undergo pre-shipment inspection (PSI). If there is an issue with PI7C9X2G404SLBQFDE, 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 PI7C9X2G404SLBQFDE part is unused and in its original packaging.
Return procedure for PI7C9X2G404SLBQFDE:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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