mITX-HSW-S - User Guide, Rev. 1.1
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Pin
Signal
Note
7
GND
8
USB3_SSTX- USB 3.0 Tx. Differential Pair (-)
9
US USB 3.0 Tx. Differential Pair (+)
Table 16: Signal Description
Signal
Description
US,
USB3_SSTX-,
US,
USB3_SSRX-, USB_n+,
USB_n-
Differential pair works as serial differential receive/transmit data lines.
(n= A, B)
+USBVCC
5 V supply for external devices. VCC is supplied during power-down to allow wakeup on
USB device activity. Protected by a 1A current limiting IC covering each of the USB port.
For HiSpeed rates it is required to use a USB cable, which is specified in USB 2.0 standard:
Figure 10: USB 2.0 High Speed Cable
For USB 3.0 cabling it is required to use only HiSpeed USB cable, specified in USB3.0 standard:
Figure 11: USB 3.0 High Speed Cable
On-Twisted Power Pair: Red: V
bus
Black: Power Ground
Inner Shield Aluminum
Metallized Polyester
28 AWG Tinned Copper Drain Wire
Polyviny Chloride (PVC) Jacket
Twisted Signaling Pair:
White: D- Green: D+
Outer Shield ≥ 65% Interwoven
Tinned Copper Braid
Filler, optional
Braid
Power
SDP Signal Pair
UTP Signal Pair
SDP Signal Pair
Jacket
Ground
