User's Manual

DE910 Series Hardware User Guide
1vv0300951 Rev.9 – 2015-05-11
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Reserved. Page 45 of 77
7. USB Port
The DE910 module includes a Universal Serial Bus (USB) transceiver, which operates at
USB high-speed (480Mbits/sec).
It is compliant with the USB 2.0 specification and can be used for diagnostic monitoring,
control and data transfers.
The table below describes the USB interface signals:
Pin Signal I/O Function Type
B15
USB_D+ I/O USB differential Data(+)
C15
USB_D- I/O USB differential Data(-)
A13
VBUS I Power sense for the internal USB transceiver 5V
The USB_DPLUS and USB_DMINUS signals have a clock rate of 480MHz. The signal
traces should be routed carefully. Trace lengths, number of vias and capacitive loading should
be minimized. The impedance value should be as close as possible to 90 Ohms differential.
WARNING:
Consider a mechanical design and a low-capacitance ESD protection device to protect DE910
or customer specific requirements from ESD event to USB lines (B15, C15 and A13).