
Embedian, Inc.
41
SMARC-FiMX6 Computer on Module User’s Manual v.1.2
2.1.12.1 USB0 Signals
The table below shows the USB0 related signals.
Edge Golden
Finder
Signal Name
Direction
Type
Tolerance
Description
USB0+
USB0-
Bi-Dir
USB
Differential USB0 Data Pair
USB0_EN_OC#
Bi-Dir
OD
CMOS
3.3V
Pulled low by Module OD driver to disable
USB0 power.
Pulled low by Carrier OD driver to indicate
over-current situation.
A 10k pull-up is present on the Module to a
3.3V rail. The pull-up rail may be switched off
to conserve power if the USB port is not in
use. Further details may be found in Section
2.1.12.3 USBx_EN_OC# Discussion below.
USB0_VBUS_DET
Input
USB VBUS
5V
USB host power detection, when this port is
used as a device.
USB0_OTG_ID
Input
CMOS
3.3V
USB OTG ID input, active high.