9.3.1.3 External USB PHY Reset Signal Configuration

To reset the external USB PHY, Microchip recommends configuring the GPIO port. The following figure shows the GPIO settings in the MSS GPIO configurator in the Libero SoC design software. The GPIO port settings can be set in the I/O Editor, as shown in the following figure, to map the PIN number as per board.

Figure 9-12. MSS GPIO Configurator with GPIO Settings for External USB PHY Reset

Figure 9-13. I/O Editor Configurator with Settings for External USB PHY Reset Pin Mapping

All the above mentioned selections in the Libero SoC design software flow are mandatory for the applications using the USB OTG controller in SmartFusion 2. Other configurations as per the complete application requirements, must be made as well. For more information on the USB configurations using the Libero SoC design software, see SmartFusion2 MSS USB Configuration Guide.