ADLINK aTCA-6250 - Manual (Page 21)

21
3.3 I/O Interfaces
3.3.1 USB
The aTCA-6250 supports four USB 2.0 ports:
ƒ Two Type-A ports on front panel
ƒ Two ports routed to RTM
On the USB 2.0 front panel port, a USB cable up to 5 meters in length can be used.
On the USB 2.0 Rear I/O ports, it is strongly recommended to use a cable less than 3 meters
in length for USB 2.0 devices.
The USB 2.0 ports are high-speed, full-speed, and low-speed capable. Hi-speed USB 2.0
allows data transfers of up to 480 Mb/s, 40 times faster than a full-speed USB (USB 1.1).
One USB peripheral may be connected to each port.
With the aTCA-R6270 (RTM), the aTCA-6250 supports two additional USB ports on the I/O
panel of the RTM.
USB Connector Pin Definition (Type A)
Pin Signal
1 5V USB VCC
2 USB-
3 USB+
4 GND USB
Note: The aTCA-6250 host interfaces can be used with a maximum 500mA continuous load
current as specified in the Universal Serial Bus Specification, Revision 2.0. Short circuit
protection is provided. All the signal lines are EMI filtered.