148
I3–I0: Interrupt mask bits in status register (SR)
Program
execution state
ICR1.MAI = 1?
Interrupt
generated?
NMI = low?
SR.BL= 0
or sleep mode?
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
Yes
No
No
No
No
No
No
No
No
No
No
No
No
No
ICR1.BLMSK = 1?
NMI?
NMI?
Level 15
interrupt?
IRQOUT
= low
Set interrupt cause in
INTEVT, INTEVT2
Save SR to SSR;
save PC to SPC
Set BL/MD/RB
bits in SR to 1
Branch to exception
handler
I3–I0 level
14 or lower?
Level 14
interrupt?
I3–I0 level
13 or lower?
Level 1
interrupt?
I3–I0
level 0?
Figure 6.3 Interrupt Operation Flowchart
Содержание SH7709S
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Страница 292: ...273 T1 CKIO A25 to A0 CSn RD WR RD D31 to D0 WEn D31 to D0 BS T2 Read Write Figure 10 6 Basic Timing of Basic Interface ...
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