Diodes Incorporated
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3-Port, 4-Lane, Slimline PCIe 2.0 Packet Switch


The PI7C9X2G304SLQ is an Automotive compliant PCI Express® 2.0 3-port/4-lane PCI Express Switch specifically designed to be AEC-Q100 qualified and meet the latest low-power and lead (Pb)-free requirements. The PI7C9X2G304SLQ is a high-performance, cost-effective solution that can be implemented in systems such as Automotive Safety and Security, Traffic Mapping, Infotainment and Telematics platforms.
The PI7C9X2G304SLQ provides one x1 or x2 upstream port and two x1 downstream ports. The PI7C9X2G304SLQ provides users the flexibility to expand or fan-out from a wide range of Bridges such as Automotive MCU, FPGA, video processing and other application specification ICs.

Industry Specifications Compliance

  • AEC-Q100, Grade 3
  • PCI Express® Base Specification, Revision 2.1
  • PCI Express CEM Specification, Revision 2.0
  • PCI-to-PCI Bridge Architecture Spec., Rev 1.2
  • Advanced Configuration Power Interface (ACPI) Specification


  • Automotive Telematics and Infotainment System
  • Wire/Wireless Tele/Data Communication
  • In-vehicle Wireless AP/Router
  • V2V System
  • ADAS System
  • Video Surveillance System
  • Vehicle Navigation System
  • Safety and Security System
  • V2G System


  • Integrated 100MHz Clock Buffer for each downstream port
  • Reliability, Availability and Serviceability
    • Supports Data Poisoning and End-to-End CRC
    • Advanced Error Reporting and Logging
    • IEEE 1149.1 JTAG interface support
  • Link Power Management
    • Supports L0, L0s, L1, L2, L2/L3Ready and L3 link power state
    • Active state power management for L0s and L1 state
  • Device State Power Management
    • Supports D0, D3Hot and D3Cold
    • 3.3V Aux Power support in D3Cold power state
  • Supports up to 512-byte maximum payload size
  • Power Dissipation: 650 mW typical in L0 normal mode and 200 mW typical in L1 mode
  • Automotive Temperature Range: -40°C to 85°C
  • MTBF: 50,927,360 hours
  • Package:
    • 128-pin LQFP 14mm x 14mm
  • Pb free and 100% Green

Enhanced Features:

  •  Programmable Driver Current and De-Emphasis Level at each individual port
  • 150ns typical latency for packet running through switch without blocking
  •  Supports “Cut-through”(Default) as well as “Store and Forward” mode for switching packets
  •  Advanced Power Savings
    o    Empty downstream ports are set to idle
    o    Clock to corresponding circuit is turned off when any port enters L1 or ASPM L1
    o    Supports Access Control Service (ACS) for peer-to-peer traffic
    o    Supports Address Translation (AT) packet for

    o    Supports Latency Tolerance Reporting (LTR) to improve Platform Power Management
    o    Supports Optimized Buffer Flush Fill (OBFF) to improve Platform Power Management

Product Specifications

Product Parameters

Ports 3
Lanes 4
Power 0.7 w
Latency 150 ns
Ambient or Junction Temperature (°C) -40 to 85
Compliance (Only Automotive supports PPAP) Automotive

Technical Documents

Recommended Soldering Techniques


Additional Technical Documents are available upon request: 
Application information, Design tool model software, Design kits, Evaluation board, and Other technical documents

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