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By PURPLELEC | 03 July 2024 | 0 Comments

USB2.0 solution for docking station

  A docking station is an external device designed for laptops. By duplicating or even extending the ports of a laptop, it allows a convenient one-stop connection between the laptop and multiple accessories or external devices (such as power adapters, network cables, mice, external keyboards, printers, and external monitors).
4-port USB hub
  The FE8.1 is a very compact, high-speed 4-port USB hub controller. It complies with all aspects of the USB-IF "Universal Serial Bus Specification Revision 2.0" (USB2.0) specification, but one-FE8.1 usually presents itself as a self-powered hub without considering the actual system implementation. To achieve the absolute minimum pin count, no input signal pins are left to monitor the local power status.
  The FE8.1 is a highly integrated, high-quality, high-performance USB 2.0 4-port hub solution. It occupies a small space and consumes very low power, making it the best choice for embedded applications and stand-alone hubs. The high quality of the FE8.1 is ensured by design tests of comprehensive scan chains and built-in self-test modes that test all high, full, and low-speed analog front-end (AFE) components during the packaging and test stages.
  FE8.1 Features:
  •USB 2.0 fully compatible AFE transceiver:
  ---Upstream port supports high-speed (480MHz) and full-speed (12MHz) modes;
  ---4 downstream ports support high-speed, full-speed and low-speed (1.5MHz) modes;
  •Integrated upstream 1.5 KΩ pull-up resistor, downstream 15 KΩ pull-down resistor, and series resistor;
  •Integrated 5V to 3.3V and 1.8V regulators;
  •Integrated power reset and power failure detection circuits;
  •Integrated 12MHz oscillator with feedback resistor and crystal load capacitor;
  •Integrated phase-locked loop (PLL) from 12MHz to 480MHz;
  •Single transaction translator (single TT): one TT represents all downstream ports; can handle 64 periodic primary/split transactions, 32 periodic complete/complex transactions, and 6 non-periodic transactions.

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