BORA SOM/BORA Hardware/Peripherals/USB

From DAVE Developer's Wiki
Jump to: navigation, search
History
Issue Date Notes
2021/10/28 New documentation layout



Bora provides one USB 2.0 (Full Speed, up to 480 Mbps) port with on-board PHY (SMSC USB3317) and support to the On-The-Go (OTG) specifications. The transceiver is connected to the USB1 controller (MIO bank 1, pins PS_MIO[28:39]). The following table describes the interface signals:

Pin name Conn. pin Function Notes
USBP1 J1.114 D+ pin of the USB cable -
USBM1 J1.116 D- pin of the USB cable -
USBOTG_CPEN J1.111 External 5 volt supply enable This pin is used to enable the external Vbus power supply
OTG_VBUS J1.113 VBUS pin of the USB cable -
OTG_ID J1.115 ID pin of the USB cable For non-OTG applications this pin can be floated. For an A-device ID is grounded. For a B-device ID is floated.