FL5801 is a hardware-based 5-port configurable High Speed (HS) USB 2.0 Hub Controller.  Two configurations are supported.  The configuration 1 supports 1 Upstream (US) port and 5 Downstream (DS) ports and Configuration 2 supports 2 Upstream ports and 4 Downstream ports.  FL5801 is a compliant Hi-Speed and Full-Speed hub and is backward compatible to legacy USB 2.0 and USB 1.1 applications.


  • Compliant to USB Specifications 1.1, 2.0
  • Multiple USB 2.0 Transaction Translators (MTT)
  • Fully compliant to all power states (USB 2 L0,1,2)
  • Customizable Billboard device and PD Bridge device
  • EEPROM or Flash for system customization
  • Hub class commands executed instantly (no USB flow control)
  • Downstream DCP/CDP support for BC 1.2 Specification
  • Smart BC will automatically engage/disengage DCP/Emulation modes
  • BC modes and options customizable with EEPROM or SPI Flash
  • 6x6mm QFN package


  • Thunderbolt 4/USB4® docking station
  • Type-C docks and dongles
  • Monitor/TV
  • USB hubs

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