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PI7C9X20404SL (Not Recommended for new design)

NRND = Not Recommended for New Design

4-port, 4-lane, SlimLine PCIe Packet Switch (Not Recommended for New Design)

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Not Recommended for New Design

Product Description

The PI7C9X20404SL is a 4-port/4-lane PCI Express® SlimLine Packet Switch specifically designed to meet the latest low-power, lead (Pb)-free and green system requirements. The PI7C9X20404SL is a cost-effective solution that can be implemented in systems such as motherboard, laptop, docking station, combo card, HBA, settop box, embedded system and other mobile or powersensitive high performance platforms. The name of the family, SlimLine, refers to the proprietary power saving technology. The PI7C9X20404SL provides one upstream port and three x1 downstream ports.

The PI7C9X20404SL provides users the flexibility to expand or fan-out from a wide range of I/O Bridges such as MCH, ICH, embedded MCU 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 16 Gbps when all 4 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: 0.4 W typical in normal mode, 0.25 W typical in standby mode
  • Industrial Temperature Range -40° to 85°
  • 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
  • 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 

Product Specifications

Product Parameters

Compliance (Only Automotive supports PPAP) Standard
Lanes 4
Latency 150
Ports 4
Power 0.4
Ambient or Junction Temperature (°C) -40 to 85

Technical Documents


Recommended Soldering Techniques