SH7641 Datasheet, PDF (843/1036 Pages) Renesas Technology Corp – Renesas 32-Bit RISC Microcomputer SuperH™ RISC engine Family / SH7641 Series

Normal routine IRQ1interrupt routine
Normal state
or standby mode
Section 20 USB Function Module
IRQ0 interrupt routine
Yes
No
IRQ0 interrupt?
Clear IRR0/IRQ0R of INTC
Set SR/I[3:0] to the IRQ0
priority
1
IRR0/IRQ1R of INTC?
0
Clear USBIFR2/SUSPS
and AWAKE
Clear IRR0/IRQ1R of INTC
RTE instruction
Clear USBIFR2/SUSPS
and AWAKE
Restore SSR
and SPC
from memory
RTE instruction
RTE instruction
Normal operation
Figure 20.23 Sample Flowchart for AWAKE
Rev. 4.00 Sep. 14, 2005 Page 793 of 982
REJ09B0023-0400