USB interfaces (Naon)

Info Box Applies to Naon Applies to NaonEVB-Lite Applies to NaonEVB-Mid

By default, Naon implements 3 USB interfaces:

• USB0
  • internal connection: this port refers to USB0 interface integrated in DM8148 processor
  • speed: high
  • mode: OTG
  • signals: DP, DM, ID, VBUS, DRVVBUS
• USB1
  • internal connection: this port refers to downport #1 of on-board hub; upstream port of hub is, in turn, connected to DM8148 USB1 port
  • speed: high
  • mode: host
  • signals: DP (hub), DM (hub), VBUS (DM8148), DRVVBUS (DM8148)
• USB2
  • internal connection: this port refers to downport #2 of on-board hub; upstream port of hub is, in turn, connected to DM8148 USB1 port
  • speed: high
  • mode: host
  • signals: DP (hub), DM (hub), VBUS (DM8148), DRVVBUS (DM8148)

On request USB1 port of DM8148 can be routed externally, replacing on-board hub. In this case USB1 and USB2 ports mentioned above are replaced by this port:

• USB1
  • internal connection: this port refers to USB1 interface integrated in DM8148 processor
  • speed: high
  • mode: host or device (mutually exclusive and selected by software)
  • signals: DP, DM, VBUS, DRVVBUS.