F75204
CB
Figure 6.1.3.1 CEN Timing diagram
CEN#: (External Pull-Down on CEN(#)_Strap)
If the USB Vbus is controlled by an Active-Low power switch, strap the F75204 to CEN#
configuration. Then F75204 CEN# output signal will keep low to enable the Vbus Power Switch. Only
when the logic level CB changes, then the CEN# output signal will assert high 1 Sec to temporary
shut down the Vbus.
Figure 6.1.3.2 CEN# Timing diagram
※ Please Note that. The CEN(#) signal is designed to provide the correct contact detection after each mode transfer.
Please note that all the mode transformation of USB port process must be finished during the work period of the CEN(#)
pulse. If the mode transfer process is taking longer than 1 sec please consider to extent the CEN(#) pulse time.
Dec., 2011
V0.16P
6
FINTEK [ FEATURE INTEGRATION TECHNOLOGY INC. ]
