SH7721 datasheet(900/1524 Pages) RENESAS

Part #	SH7721

Description	Renesas 32-Bit RISC Microcomputer SuperHTM RISC engine Family / SH7700 Series

PDF	1524 Pages

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Manufacturer	RENESAS [Renesas Technology Corp]

Direct Link	http://www.renesas.com

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900 / 1524 page

Section 25

USB Function Controller (USBF)

Rev. 3.00 Jan. 18, 2008 Page 838 of 1458

REJ09B0033-0300

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

Cable Disconnection

USB function

Cable connected

VBUSMN pin = 1

USB cable disconnection

VBUSMN pin = 0

UDC core reset

End

Application

IFR0/VBUSF = 1, VBUSMN = 0

USB connection or

disconnection detection interrupt

Figure 25.4

Cable Disconnection Operation

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.

SH7721 Datasheet(PDF) 900 Page - Renesas Technology Corp