FlexATX-KBL-S-C236 – Rev. 1.1
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6.4.
USB Connectors (I/O area)
Figure 5: USB 2.0 / 3.0 socket
USB 2.0
USB 3.0
Pin
Type
Signal
Note
1
PWR
5 V / SB 5 V
USB2.0 / 3.0
2
IO
USB 3-
USB2.0 / 3.0
3
IO
USB 3+
USB2.0 / 3.0
4
PWR
GND
USB2.0 / 3.0
5
IO
RX 2-
USB3.0
6
IO
RX 2+
USB3.0
7
PWR
GND
USB3.0
8
IO
TX 2-
USB3.0
9
IO
TX 2+
USB3.0
Signal
Description
USBn+ USBn-
RXn+ RXn-
TXn+ TXn-
Differential pair works as serial differential receive/transmit data lines.
(n= 0,1,2,3)
5 V / SB5 V
5
V supply for external devices.
SB5
V is supplied during power-down to allow wakeup on USB device activity.
Protected by resettable 2.6
A of USB3.0 and 1.5
A of USB2.0.
For HiSpeed rates it is required to use a USB cable, which is specified in USB2.0 standard:
Figure 6: USB 2.0 High Speed Cable
1
2
3
4
W
G
B
R
Polyvinyl Chloride (PVC) Jacket
Outer Shield ≥ 65% Interwoven
Tinned Copper Braid
Inner Shield Aluminum
Metallized Polyester
28 AWG Tinned Copper Drain Wire
Twisted Signaling Pair:
White: D- Green: D+
On-Twisted Power Pair:
Red: V
BUS
Black: Power Ground
1
2
3
4
9
8
7
6
5
