9.2.2.5 FLT Pin Operation

Once a Short-to-V_BUS occurs on the C_CCx or C_SBUx pins, the FLT pin is asserted in 20 µs (typical) so the PD controller can be notified quickly. If V_BUS is being shorted to CC or SBU, it is recommended to respond to the event by forcing a detach in the USB PD controller to remove V_BUS from the port. Although the USB Type-C port using the TPD8S300A is not damaged, as the TPD8S300A provides protection from these events, the other device connected through the USB Type-C Cable or any active circuitry in the cable can be damaged. Although shutting the V_BUS off through a detach does not guarantee it stops the other device or cable from being damaged, it can mitigate any high current paths from causing further damage after the initial damage takes place. Additionally, even if the active cable or other device does have proper protection, the short-to-V_BUS event may corrupt a configuration in an active cable or in the other PD controller, so it is best to detach and reconfigure the port.