Cable Disconnection; Figure 20.3 Cable Disconnection Operation - Renesas HD6417641 Hardware Manual

Also, in applications that require connection detection regardless of D+ pull-up control, detection
should be carried out using IRQx or a general input port. For details, see section 20.8, Example of
USB External Circuitry.
20.4.2

Cable Disconnection

The flowchart in figure 20.3 shows the operation in the case for section 20.8, Example of USB
External Circuitry.
USB function
Cable connected
VBUS pin = 1
USB cable disconnection
VBUS pin = 0
UDC core reset
End

Figure 20.3 Cable Disconnection Operation

Section 20 USB Function Module
Application
Rev. 4.00 Sep. 14, 2005 Page 767 of 982
REJ09B0023-0400