SLLSEN9F May 2015 – March 2022 TUSB320
PRODUCTION DATA
The TUSB320 device supports VBUS detection according to the Type-C specification. VBUS detection is used to determine the attachment and detachment of an UFP and to determine the entering and exiting of accessary modes. VBUS detection is also used to successfully resolve the role in DRP mode.
The system VBUS voltage must be routed through a 900-kΩ resistor to the VBUS_DET pin on the TUSB320 device if the PORT pin is configured as a DRP or an UFP. If the TUSB320 device is configured as a DFP and only ever used in DFP mode, the VBUS_DET pin can be left unconnected.