2.4.2.6 USB 2.0 Host Connector Schematic Example
Figure 26: USB 2.0 host block diagram
Limiting the USB host port to USB 2.0 can cut cost on the carrier board. Additionally, not all Verdin
modules support the SuperSpeed signals for the USB_2 port. The implementing an USB 2.0 host
port means that the SuperSpeed signals of the module edge connector can be left unconnected.
Since in the USB 2.0 specifications, the output current is limited to 500mA, the power budget on
the 5V rail maybe can be reduced which can be another cost saver.
Figure 27: USB 2.0 host reference schematic
2.4.3 Unused USB Signal Termination
Leave NC and set the USB port direction in software to host or client OR ground the pin if port is
used permanently as host OR add pull-up resistor if port is used as slave.
To Next Page
Loading...
