Figure 22: USB 2.0 client block diagram
USBO1_EN, USBO1_OC# and USBO1_ID pins are not used in this configuration. The USBO1_EN
pin can be left unconnected. The USBO1_OC# should be pulled up to 3.3V or disabled in the
software. The USBO1_ID pin needs to be pulled up to 3.3V or the OTG port needs to be
configured by the software to be the client only.
The USBO1_VBUS pin can be connected directly to the USB bus power supply of the USB Type B
connector. This signal is needed to indicate to the system that a host is connected at the other end
of the USB cable.
Figure 23: USB 2.0 client reference schematic
2.5.2.3 USB 3.0 Host Connector Schematic Example
The following schematic example shows how to use the USBH4 port as a USB 3.0 host interface. As
USB 3.0 is backward compatible, this port could also be used as a USB 2.0 host interface.
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