Table 14: Signal Description - Kontron pITX-iMX8M User Manual

Pin Connector Pin
4 GND_BOT
5 USB_BOT_SSRX-
6
USB_BOT_SSRX+
7 GND_DRAIN_BOT
8
USB_BOT_SSTX-
9 USB_BOT_SSTX+
10 VBUS_TOP
11 USB_TOP_D-
12 USB_TOP_D+
13 GND _TOP
14 USB_TOP_SSRX-
15 USB_TOP_SSRX+
16
GND_DRAIN _TOP
17 USB_TOP_SSTX-
18 USB_TOP_SSTX+

Table 14: Signal Description

Signal Description
USBn+ USBn- Differential pair works as serial differential receive/transmit data lines.
Change to: USB2.0 (n=0,1,2,3), USB3.0 (n=0,1)
RXn+ RXn-
TXn+ TXn-
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 a 2 A current limiting IC (1 A for each port).
For USB2.0 cabling it is required to use only HiSpeed USB cable, specified in USB2.0 standard:
Direction Description
GROUND Ground
INPUT
USB3 HUB P2 differential USB 3.0 receive data pairs.
INPUT
GROUND Ground
OUTPUT
USB3 HUB P2 differential USB 3.0 transmit data pairs.
OUTPUT
POWER USB 5V Power Distribution to downstream device.
BIDIR
USB2 differential USB 2.0 data pairs.
BIDIR
GROUND Ground
INPUT
USB2 differential USB 3.0 receive data pairs.
INPUT
GROUND Ground
OUTPUT
USB2 differential USB 3.0 receive data pairs.
OUTPUT
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