FE4.1 — USB 2.0 Dual-Port Hub Controller

FE4.1 is a USB 2.0 High-Speed Dual-Port Hub Controller with special features to support USB dongle applications.

Optimized for USB Dongles

Specifically designed to support USB dongle applications, which are compound devices with two embedded devices or one embedded device and one open downstream port.

Quality Guaranteed

Quality is guaranteed by Design-For-Testing with comprehensive scan chains and Built-In-Self-Test modes which could exercise all high-, full-, and low-speed Analog Front End (AFE) components at the packaging and testing stages.

Low Power Consumption

To fit into a tight and closed USB dongle application environment, FE4.1 features tiny footprint and extreme low power consumption.

Product Brief for FE4.1PDF icon

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FE4.1 in QFN-20 package Full size image.FE4.1 in QFN-20 package

Product Specifications

Package Port Count Body Size Grade Transaction Translator
QFN-20 2 4x4 mm Commercial Grade Single

Commercial Grade: 0°C - 70°C

Features

  • Fully compliant with Universal Serial Bus Specification Revision 2.0 (USB 2.0)
    • Upstream Facing Port supports High-Speed (480MHz) and Full-Speed (12MHz) modes
    • 2 Downstream Facing Ports support High-Speed (480MHz), Full-Speed (12MHz), and Low-Speed (1.5MHz) modes
  • Integrated USB 2.0 Transceivers
  • Integrated upstream 1.5KΩ pull-up, downstream 15KΩ pull-down, and serial resistors
  • Integrated 5V to 3.3V and 1.8V regulators
  • Integrated Power-On-Reset circuit with power failure detection circuit
  • Integrated 12MHz Oscillator with feedback resistor, and crystal load capacitor
  • Integrated 12MHz-to-480MHz Phase Lock Loop (PLL)
  • Single Transaction Translators (STT)
    • One TT for all downstream ports
    • The TT could handle 64 periodic Start-Split transactions, 32 periodic Complete-Split transactions, and 6 none-periodic transactions
  • Supports Ganged Power Control mode
  • Provides two clock output: one 12MHz and one 24MHz; and one Remote-Wake-Up Alert input