REL1.1
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iWave Systems Technologies Pvt. Ltd.
RZ/G1C SBC Hardware User Guide
2.6.2
Dual USB 2.0 Host Ports
The RZ/G1C SBC supports two USB2.0 High Speed Host interface through RZ/G1C CPU
’s
USB1 controller. This USB1
controller with integrated PHY supports USB2.0 High-Speed (480 Mbps)/Full-Speed (12 Mbps)/Low-Speed (1.5 Mbps)
transfer. To support two USB2.0 Host interfaces, RZ/G1C CPU
’s
USB1 controller is interfaced with two-port USB hub
“USB2422”
. This Hub output port1 & port2 is connected to USB Type A Dual stack connector (J8). This Dual Stack
Connector (J8) is physically located on top side of the SBC as shown below.
The VBUS power to the USB2.0 Host ports are connected through current limit power switch which limits the current
above 500mA. Also over current output & power enable input of the current limit power switch is connected to
corresponding USB HUB port
’s
control pins to control the USB ports VBUS power.
Figure 6: Dual USB 2.0 Host Connector