AURA SOM/AURA Evaluation Kit/Interfaces and Connectors/USB ports
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USB ports[edit | edit source]
Description[edit | edit source]
AURA Evaluation Kit provides two USB ports, one Host and one OTG:
- J17 is a standard USB Host 2.0 Type A connector
- J18 is a micro-AB type receptacle for a USB OTG connection: this interface can operate (optionally) in Host mode and Device (peripheral) mode
Signals[edit | edit source]
The following table describes the interface signals
USB Host[edit | edit source]
| Pin# | SOM Pin# | Pin name | Pin function | Pin Notes |
|---|---|---|---|---|
| 1 | J10.188 | USB_HOST_VBUS | VBUS | USB2_VBUS |
| 2 | J10.202 | USB_HOST_DN | USB Host Data - | USB2 D_N |
| 3 | J10.200 | USB_HOST_DP | USB Host Data + | USB2 D_P |
| 4 | - | DGND | Ground |
USB OTG[edit | edit source]
| Pin# | SOM Pin# | Pin name | Pin function | Pin Notes |
|---|---|---|---|---|
| 6, 7, 8, 9 | - | USB_OTG_SH Shield | ||
| 1 | J10.186 | USB_OTG_VBUS | VBUS | USB1_VBUS |
| 2 | J10.196 | USB_OTG_DN | USB OTG Data - | USB1 D_N |
| 3 | J10.198 | USB_OTG_DP | USB OTG Data + | USB1 D_P |
| 4 | J10.192 | ENET_RX_ER | USB OTG ID | USB1_ID |
| 5 | - | GND | Ground |
Device usage[edit | edit source]
The USB Host port, connected to the USB2_OTG i.MX93x port, can be used under Linux for connecting USB peripheral devices: the related peripheral driver has to be integrated into the Linux kernel.
The USB OTG port, connected to the USB1_OTG i.MX93x port, can be easily tested using the Mass Storage Gadget driver.
