IGEP
TM
SMARC iMX6
Hardware Reference Manual
ISEE 2007 S.L. All rights reserved, IGEP is a registered trademark from ISEE 2007 S.L. The following is provided for informational purposes only.
NIF:ESB64377005 Document:
MAN-IGEP0046-001
/ Revision:
1.3
/ Date:
23/06/2016
19
4.5
USB CONNECTIONS
There are two possibilities to connect the module to other USB devices: with a standard Host base and with
an OTG (On-The-Go) interface.
The USB 2.0 Host connection is provided for connecting other devices acting as Clients of the module (for
example, an external HDD). The SMARC-314 connector lines referred to this function are adapted for a USB
type A receptacle, see wiring example in the next figure (page 65 of SMARC Design Guide).
Figure 12 USB 2.0 Host connections
The USB 2.0 OTG connection allows the configuration of the board as Host or Client in function of the wire of
connection used for linking both devices (the IGEP
TM
module and the external device; adapting the SMARC-
314 connector lines for an USB type AB). It’s defined by the pin P64 (USB0_OTG_ID): when the board detects
this pin connected at ground, it will be an A-device; by the other side, if the pin is floating (NC) it will be a B-
device. The next figure shows the connections (page 64 of SMARC Design Guide).
Figure 13 MicroUSB AB 2.0 OTG connections
