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3-port, 3-lane, Ultra-Low PCIe Packet Switch (Not Recommended for New Design)

Not Recommended for New Design

Product Description

The PI7C9X20303UL is a 3-port/3-lane PCI Express® Packet Switch specifically designed to meet the latest ultra low-power, lead (Pb)-free and green system requirements. The PI7C9X20303UL is a cost-effective solution that can be implemented in systems such as combo card, HBA, set-top box, embedded system, motherboard, laptop, docking station and other mobile or dimension/ power-sensitive high performance platforms.

The PI7C9X20303UL provides one upstream port and two x1 downstream ports. The PI7C9X20303UL provides users the flexibility to expand or fan-out from a wide range of I/O Bridges such as ICH, embedded MCU, wireless chipset CPU, and other Application Specific ICs. 

Industry Specifications Compliance

  • PCI Express Base Specification, Revision 1.1
  • PCI Express CEM Specification, Revision 1.1
  • PCI-to-PCI Bridge Architecture Spec., Rev 1.2
  • Advanced Configuration Power Interface (ACPI) Specification 


  • Non-blocking full-wired switching capability at 12 Gbps when all 3 lanes are enabled
  • Reliability, Availability and Serviceability 
    • Supports Data Poisoning and End-to-End CRC
    • Advanced Error Reporting and Logging
    • IEEE 1149.6 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 
    • Beacon or Wake# support in L2 state 
  • Device State Power Management
    • Supports D0, D3Hot and D3Cold
    • 3.3V Aux Power support in D3Cold power state 
  • Supports up to 256-byte maximum payload size
  • Power Dissipation: 0.25 W typical in active mode, 0.15 W typical in standby mode
  • Industrial Temperature Range -40° to 85°
  • Package: 132-pin TQFN 10mm x 10mm 
    • Pb free and 100% Green. 

Enhanced Features

  • UltraLo™ power consumption to meet mobile applications
  • 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
  • Supports up to 256-byte maximum payload size
  • Advanced Power Savings 
    • Empty downstream ports are set to idle 
    • Clock to corresponding circuit is turned off when any port enters L1 or ASPM L1 


  • Notebook internal PCIe® fan-out
  • PCIe Surveillance and Combo cards
  • PC Motherboard PCIe slot expansion
  • Wire/ Wireless Tele/ data communication
  • Embedded system
  • Set-top box and consumer devices
  • Industrial control
  • Peripheral
  • Consumer electronics 

Product Specifications

Product Parameters

Ports 3
Lanes 3
Power 0.25
Latency 150
Temperature -40 to 85

Technical Documents


Recommended Soldering Techniques


Product Change Notices

PCN # Issue Date Subject
PCN 2328 2018-04-12 Device End of Life for tray packaging only


Discontinued parts in this family

Obsolete Part # View PDN Package Comment Note
PI7C9X20303ULZPE PDN 13-0009 ZP132 Contact Pericom Customer Service