ZHCSFQ2C November 2016 – June 2018 TUSB422
PRODUCTION DATA.
One of the features of USB PD is the ability to raise VBUS above the default vSafe5V level. The ability to monitor the VBUS voltage level is critical to determining when VBUS is at desired level as well as when VBUS is no longer present. The TUSB422 implements measuring of VBUS and the results are stored in the VBUS Voltage register. The VBUS voltage measurement is enabled by setting the VBUS_VOLTAGE_MONITOR bit in the Power Control register.