KTS1675

August 2020 - Revision 04e

Page 16

Company Confidential

In OTG modes, a load is applied to IN pin and current flows from OUT to IN. After a valid OUT voltage is applied after

a debounce time and no voltage is detected at IN, the

FLAG

̅̅̅̅̅̅̅̅ serves as a logic output and toggles high. The FLAG

̅̅̅̅̅̅̅̅

pin is bidirectional, and autonomous OTG modes are triggered by pulling the

FLAG

̅̅̅̅̅̅̅̅ input pin low.

IN

OUT

EN

FLAG

WRX

Active

Discharging

tDIS_IN

Floating

Pulled LOW

Figure 8. Autonomous OTG Mode Timing: OTG Insertion and Removal (

EN

̅̅̅̅) = low)

IN

OUT

EN

FLAG

WRX

Active

Charging

tDIS_IN

Figure 9. Slave OTG mode timing: OTG Activate and Deactivate

(

FLAG

̅̅̅̅̅̅̅̅) = low, (WRX

̅̅̅̅̅̅̅) = low) (EN

̅̅̅̅ is pull LOW before Vin ramps up)