HD6417320 RENESAS [Renesas Technology Corp], HD6417320 Datasheet - Page 900

• Manufacturer Part Number: HD6417320
• Description: Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series
• Manufacturer: RENESAS [Renesas Technology Corp]

Section 25
In applications that do not require USB cable connection to be detected, processing by the USB
connection or disconnection detection interrupt is not necessary. Preparations should be made with
the bus reset interrupt.
Also, in applications that require connection detection regardless of D+ pull-up control, detection
should be carried out using IRQ or a general input port.
25.4.2
In applications that require connection/disconnection detection regardless of D+ pull-up control,
detection should be carried out using IRQ or a general input port.
Rev. 3.00 Jan. 18, 2008 Page 838 of 1458
REJ09B0033-0300
Cable Disconnection
USB Function Controller (USBF)
USB cable disconnection
VBUSMN pin = 1
VBUSMN pin = 0
Cable connected
USB function
UDC core reset
Figure 25.4
End
Cable Disconnection Operation
disconnection detection interrupt
IFR0/VBUSF = 1, VBUSMN = 0
USB connection or
Application