LEVY
LEVY User Manual - Rev. First Edition: 1.0 - Last Edition: 1.0 - Author: S.O. - Reviewed by N.P. - Copyright © 2022 SECO S.p.A.
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3.2.2.10
USB interface signals
The module has 5x USB ports consisting of 1x USB 2.0 port from the NXP i.MX 8M Plus processor USB 2.0 controller which can be configured at kernel compile
time to work as Host or Client, 2x USB 3.0 Superspeed and 2x USB 2.0 from a Cypress USB3304-68LTXC USB 3.0 hub controller.
Here following the signals related to USB interfaces.
USB0+/ USB0-: Universal Serial Bus 2.0 Port #0 differential pair (directly managed by i.MX 8M USB Host Controller core #1).
USB0_EN_OC#: Power Enable and over current monitoring function. Active Low Output signal, +3.3V_ALW electrical level with a 1
l-up resistor. Refer to
SMARC 2.1 Specification for over current operation information.
The USB0 port is directly managed by i.MX 8M Plus USB Host Controller core #1 and can be used for serial download driving FORCE_RECOV# low.
Please take note that the OTG functionality on this port is not supported at runtime, USB0 must be set to work as Client or Host at kernel compile time.
USB1+/ USB1-: Universal Serial Bus Port 2.0 #1 differential pair.
USB1_EN_OC#: Power Enable and over current monitoring function. A
-up resistor. Refer to
SMARC 2.1 Specification for OC operation information.
USB2+/USB2-: Universal Serial Bus Port 2.0 #2 differential pair.
USB2_EN_OC#: Power Enable and over current mon
-up resistor. Refer to
SMARC 2.1 Specification for OC operation information.
USB3+/USB3-: Universal Serial Bus Port 2.0 #3 differential pair.
USB3_EN_OC#: Power Enable a
-up resistor. Refer to
SMARC 2.1 Specification for OC operation information.
USB4+/USB4-: Universal Serial Bus Port 2.0 #4 differential pair.
USB4_EN_
-up resistor. Refer to
SMARC 2.1 Specification for OC operation information.
US/ USB2_SSTX-: USB 3.0 Port #1 Superspeed Transmit differential pair.
US/ USB2_SSRX-: USB 3.0 Port #1 Superspeed Receive differential pair.
US/ USB3_SSTX-: USB 3.0 Port #2 Superspeed Transmit differential pair.
US/ USB3_SSRX-: USB 3.0 Port #2 Superspeed Receive differential pair.
