Diodes Incorporated
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PCIe-to-USB 2.0 Host Controller

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Product Description 

The PI7C9X440SL PCI Express to USB 2.0 Host Controller is designed to meet the latest low-power, lead (Pb)-free and green system requirements. The PI7C9X440SL is a cost-effective solution that can be implemented in systems such as volume servers, storages, embedded systems, medical, industrial, automation, network, IP TV, peripherals, PC add-in cards and other footprint sensitive platforms requiring multiple USB host connections. The PI7C9X440SL provides one x1 upstream PCIe port and up to 4 USB 2.0 host controller ports.

The PI7C9X440SL provides users the flexibility to expand system connectivity from a wide range of I/O Bridges such as IOH, PCH, embedded MCU, SoC and other Application Specific ICs.

Industry Specifications Compliance 

  • PCIe Base Specification, Revision 1.1
  • PCIe CEM Specification, Revision 1.1
  • Advanced Configuration Power Interface (ACPI) Specification
  • Universal Serial Bus (USB) 2.0 Compliant (1.5/12/480 Mbps)
  • Universal Serial Bus(USB) EHCI 1.0a/OHCI 1.0 Compliant
  • System Management (SM) Bus, 1.0 Compliant

PCI Express Interface Features 

  • x1 PCIe 1.1 port
  • Link Power Management
    • Supports L0, L0s, L1, L2, L2/L3Ready and L3 link power state
    • Active state power management for L0s and L1 state
    • PME# support in L2 state
  • Device State Power Management
    • Supports D0, D3Hot and D3Cold device power state
    • 3.3V Aux Power support in D3Cold power state
  • Supports up to 256-byte maximum payload size
  • Programmable driver current and de-emphasis level at PCIe port
  • Reliability, Availability and Serviceability

USB 2.0 Host Controller Features

  • USB Root hub with 4 (max.) downstream facing ports which are shared by OHCI and EHCI host controllers
  • All USB downstream facing ports can handle High Speed (480 Mbps), Full Speed (12 Mbps) and Low Speed (1.5 Mbps) transactions
  • PCI multi-function device consists of two OHCI host controllers for Full Speed/Low Speed signaling and one EHCI host controller for High Speed signaling
  • USB Host Controller operational registers directed-mapped to PCI 

General Features

  • Strapped pins configurable with optional EEPROM or SMBus interface support
  • Industrial Temperature Range -40° to 85°
  • 128-pin LQFP 14mm x 14mm package 


  • Embedded system
  • Digital security surveillance/ DVR
  • In Vehicle infotainment
  • Medical/ Industrial/ Automation
  • POS/ Vending Machine
  • Volume Servers/ Storage
  • Peripheral/ Multifunction Printers
  • PC/ NB Add-in card/ Express card
  • Smart Grid/ Smart Meter
  • Telecom/Networking
  • SOHO router/ IP TV
  • Gaming/ M2M

Product Specifications

Product Parameters

PCI Speed N/A
PCI Bus Width N/A
Ports 4 USB
Lanes 1
Ambient or Junction Temperature (°C) -40 to 85

Technical Documents

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