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VL808 - Two Ports Super Speed Plus USB 3.1 Host Controller

EOL Products


The VIA Lab’s VL808 is a single chip USB 3.1 Host controller which enables a PCI Express equipped platform to interface with USB Super-Speed Plus (10 Gbps), Super-Speed (5 Gbps), High-Speed (480 Mbps), Full-Speed (12 Mbps), and Low-Speed (1.5 Mbps) devices. The root hub consists of two downstream facing ports, allowing simultaneous operation of up to 64 peripheral devices. The VL808 has an x2 PCI Express 3.1 bus interface that is backwards compatible with PCI Express 2.0.

The VIA Lab’s VL808 complies with the Universal Serial Bus 3.1 Specification and Intel’s eXtensible Host Controller Interface (xHCI 1.1), and is fully backward compatible with USB 2.0 and 1.1 specifications, ensuring seamless connectivity of legacy USB devices.

(VL808 is test chip, not for sell.)

Block Diagram

Key Features

  • Compliant to Universal Serial Bus 3.1 Specification Revision 1.0
  • Compliant to Universal Serial Bus 2.0 Specification
  • Compliant to eXtensible Host Controller Interface (xHCI) Specification Revision 1.1
  • Support Legacy USB Function
  • Compliant with PCI Express Base Specification 3.1
  • In-house USB PHY employs advanced CMOS process to reduce power consumption 
  • Support Battery Charging Specification
  • Firmware upgrade options include integrated firmware in system BIOS
  • Software
    - Initial xHCI Host Controller Driver Support for Window 8.1 Windows 8 and Windows 7
      。 Bulk Only Transfer (BOT) mode
      。 USB Attached SCSI Protocol (UASP) mode
    - Provide In-House UAS/Turbo driver on Windows 7
    - Compatible with Windows 8 and Windows 8.1 in box driver