HD6417641 RENESAS [Renesas Technology Corp], HD6417641 Datasheet - Page 842
HD6417641
Manufacturer Part Number
HD6417641
Description
Manufacturer
RENESAS [Renesas Technology Corp]
Datasheet
1.HD6417641.pdf
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Section 20 USB Function Module
Rev. 4.00 Sep. 14, 2005 Page 792 of 982
REJ09B0023-0400
Figure 20.22 Sample Flowchart for Changing the State from USB Suspend to Standby
No
Normal operation
IRQ1 interrupt?
Normal routine
Normal state
Yes
AWAKE (clear detection of USB
suspend and AWAKE signals)
Clear USBIFR2/SUSPS and
Clear IRR0/IRQ1R of INTC
Clear IRR0/IRQ0R of INTC
IRQ1 interrupt routine
Set SR/I[3:0] to the IRQ1
IRR0/IRQ0R of INTC?
Save SSR and SPC
RTE instruction
to memory
1
priority
0
Set STBCR/STBY
SLEEP instruction
Standby mode
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