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Atlas 200 Hardware Development Guide 02

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USB Interface

USB Interface

The USB controller module is a device function controller that is compatible with the USB 3.0 (SuperSpeed), USB 2.0 (HighSpeed), and USB 1.1 (FullSpeed) protocols.

The USB controller has the following features:

  • Supports the device mode.
  • Provides one USB interface.
  • Is compatible with the USB 3.0, USB 2.0, and USB 1.1 protocols.

Table 3-6 describes the signal design requirements.

Table 3-6 Signal design requirements

Pin Name

Function Description


USB 3.0 RX differential signal. A 100 nF capacitor needs to be connected to the user PCB.


USB 3.0 TX differential signal. A 100 nF capacitor has been connected in the module.


USB 2.0 differential signal.


The USB device insertion detection is necessary for the device. The VBUS input signal cannot be directly connected to 5 V. The input level range of the USB device is 0 V to 3.3 V. The 30kΩ±1% resistor must be connected to 5 V in series.

Updated: 2019-07-29

Document ID: EDOC1100079542

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