
QDS-9400 - User Guide, Rev. 1.0
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6.4.
USB Connectors (I/O Area)
The external I/O connector panel supports two USB 3.0 connectors and one USB 2.0 connector.
USB 3.0 ports are backward compatible with USB 2.0.
Figure 7: USB 3.0 Connectors (USB 3.0)
Table 13: Pin Assignment USB 3.0 / USB 2.0 Connectors (USB 3.0)
Pin
Signal
Description
Note
1
+USB_VCC*
+5 V power supply for USB device
2
USB_D-
USB 2.0 differential pair (-)
3
USB_D+
USB 2.0 differential pair (+)
4
GND
Ground
5
USB_RX-
USB 3.1 receiver differential pair (-)
6
USB 3.1 receiver differential pair (+)
7
GND
Ground
8
USB_TX-
USB 3.1 transmitter differential pair (-)
9
USB 3.1 transmitter differential pair (+)
Figure 8: USB 2.0 Connectors (HOST USB)
Table 14: Pin Assignment USB 2.0 Connectors (HOST USB)
Pin
Signal
Description
Note
1
+USB_VCC
+5 V power supply for USB device
2
USB_D-
USB 2.0 differential pair (-)
3
USB_D+
USB 2.0 differential pair (+)
4
GND
Ground
For HiSpeed rates it is required to use a USB cable, which is specified in USB 2.0 standard:
Figure 9: USB 2.0 High Speed Cable