FLEX-IMX8M-Mini HARDWARE MANUAL
– VER 1.00 – JAN 31 2020
Page
35
of
48
5.6. Universal Serial Bus (USB) Interface
The FLEX-IMX8M-Mini incorporates a single USB Host controller and an additional USB Host/OTG
controller.
Each of the USB controllers provides the following main features:
USB 2.0 Host/OTG Controller
•
High-Speed/Full-Speed/Low-Speed OTG core
•
HS/FS/LS UTMI compliant interface
•
High Speed, Full Speed and Low Speed operation in Host mode (with UTMI transceiver)
•
High Speed, and Full Speed operation in Peripheral mode (with UTMI transceiver)
•
Hardware support for OTG signaling, session request protocol, and host negotiation
protocol
•
Support charger detection
USB 2.0 Host Controller
•
High-Speed/Full-Speed/Low-Speed Host-Only core
•
HS/FS/LS UTMI compliant interface
For additional details, please refer t
o the “Universal Serial Bus Controller (USB)” chapter of the
“i.MX8M Mini Applications Processor Reference Manual”.
Table 16 - USB Host Signal Description
PIN
CPU
BALL
CPU PAD NAME
Signal
V
I/O
Description
172
AF10
GPIO1_IO09
USDHC3_RESET_
B
3V3
O
Universal Serial Bus
power enable
176
AF11
GPIO1_IO07
GPIO1_IO07
3V3
I/O
General Purpose
Input Output for USB
hub reset
178
F23
USB2_VBUS
USB2_VBUS
5V
I
Universal Serial Bus
power
194
A23
USB2_DN
USB2_DN
3V3
I/O
Universal Serial Bus
differential pair
negative signal
196
B23
USB2_DP
USB2_DP
3V3
I/O
Universal Serial Bus
differential pair
positive signal
