ZHCSFQ2C November 2016 – June 2018 TUSB422
PRODUCTION DATA.
Unattached mode is the primary mode of operation for the TUSB422 since a USB port can be unattached for a lengthy period of time. In this mode, the TUSB422 may be configured as UFP (present Rd on both CC pins), DFP (present Rp on both CC pins), or DRP (alternate between Rp and Rd on both CC pins) operation and waiting for a connection. The TUSB422 remains in this mode until a connection is detected. Upon detection of a connection, the INT_N pin will be asserted low.
In Unattached mode, VDD is available, and all IOs are operational. VCONN is disabled. USB PD BMC phy is disabled.