TechNexion PICO-IMX6UL-EMMC, Hardware Manual

Page: 28 / 55

PICO-IMX6UL-EMMC REV. A1. HARDWARE MANUAL
– VER 1.00 – MAR 28 2016
Page 28 of 54
3.4. Universal Serial Bus (USB) Interface
The PICO-IMX6UL-EMMC 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 to the “Universal Serial Bus Controller (USB)” chapter of the
“i.MX6Ultralite Application Processor Reference Manual”.
Table 11 - USB Host Signal Description
PIN
CPU
BALL
CPU PAD NAME Signal V I/O Description
X2_46 T13 USB_OTG2_DN USB_OTG2_DN 3V3 I/O
Universal Serial Bus
differential pair negative
signal
X2_48 U13 USB_OTG2_DP USB_OTG2_DP 3V3 I/O
Universal Serial Bus
differential pair positive
signal
X2_50 U12 USB_OTG2_VBUS USB_OTG2_VBUS 5V I/O
Universal Serial Bus
power
X2_52 R10 SNVS_TAMPER0 GPIO5_IO00 3V3 I
Active low input, to inform
USB overcurrent condition
(low = overcurrent
detected)
Table 12 - USB OTG Signal Description
PIN
CPU
BALL
CPU PAD NAME Signal V I/O Description
E1_3 K13 GPIO1_IO00 USB_OTG1_PWR 3V3 I USB OTG ID Pin
E1_16 U15 USB_OTG1_DP USB_OTG_DP USB I/O
Universal Serial Bus
differential pair positive
signal
E1_18 T15 USB_OTG1_DN USB_OTG1_DN USB I/O Universal Serial Bus
differential pair negative
signal
E1_19 L15 GPIO1_IO01 GPIO1_IO01 1V8 I Over current detect input
pin to monitor USB power
over current
E1_20 T12 USB_OTG1_VBUS USB_OTG1_VBUS 5V I/O Universal Serial Bus
power
E1_21 K17 GPIO1_IO06 USB_OTG_
PWR_WAKE USB I Universal Serial Bus
power enable
NOTE: While using USB OTG in USB HOST mode. The USB_ID pin should have a pull-down resistor
to GND.