pITX-iMX8M – User Guide Rev. 1.4
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Pin
Connector Pin
Direction
Description
4
GND_BOT
GROUND
Ground
5
USB_BOT_SSRX-
INPUT
USB3 HUB P2 differential USB 3.0 receive data pairs.
6
USB_B
INPUT
7
GND_DRAIN_BOT
GROUND
Ground
8
USB_BOT_SSTX-
OUTPUT
USB3 HUB P2 differential USB 3.0 transmit data pairs.
9
USB_B
OUTPUT
10
VBUS_TOP
POWER
USB 5V Power Distribution to downstream device.
11
USB_TOP_D-
BIDIR
USB2 differential USB 2.0 data pairs.
12
US
BIDIR
13
GND _TOP
GROUND
Ground
14
USB_TOP_SSRX-
INPUT
USB2 differential USB 3.0 receive data pairs.
15
USB_T
INPUT
16
GND_DRAIN _TOP
GROUND
Ground
17
USB_TOP_SSTX-
OUTPUT
USB2 differential USB 3.0 receive data pairs.
18
USB_T
OUTPUT
Table 16: Signal Description
Signal
Description
USBn+ USBn-
RXn+ RXn-
TXn+ TXn-
Differential pair works as serial differential receive/transmit data lines.
Change to: USB2.0 (n=0,1,2,3), USB3.0 (n=0,1)
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:
Summary of Contents for 44011-0208-13-2
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