SH7641 Datasheet, PDF (817/1036 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7641 Series

Section 20 USB Function Module
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
USB function
Cable connected
VBUS pin = 1
Application
USB cable disconnection
VBUS pin = 0
UDC core reset
End
Figure 20.3 Cable Disconnection Operation
The flowchart in figure 20.3 shows the operation in the case for section 20.8, Example of USB
External Circuitry.
Rev. 4.00 Sep. 14, 2005 Page 767 of 982
REJ09B0023-0400