Samsung C8278X User Manual

Page of 324
INTERRUPT STRUCTURE   
 
 
S3C8275X/F8275X/C8278X/F8278X/C8274X/F8274X 
5-12  
 
Interrupt Priority Register (IPR)
FFH, Set 1, Bank 0, R/W
.7
.6
.5
.4
.3
.2
.1
.0
MSB
LSB
Group A:
0 = IRQ0 > IRQ1
1 = IRQ1 > IRQ0
Subgroup B:
0 = IRQ3 > IRQ4
1 = IRQ4 > IRQ3
Group C:
0 = IRQ5 > (IRQ6, IRQ7)
1 = (IRQ6, IRQ7) > IRQ5
Subgroup C:
0 = IRQ6 > IRQ7
1 = IRQ7 > IRQ6
Group B:
0 = IRQ2 > (IRQ3, IRQ4)
1 = (IRQ3, IRQ4) > IRQ2
Group priority:
0    0    0
0    0    1
0    1    0
0    1    1
1    0    0
1    0    1
1    1    0
1    1    1
= Undefined
= B > C > A
= A > B > C
= B > A > C
= C > A > B
= C > B > A
= A > C > B
= Undefined
D7 D4 D1
 
Figure 5-8. Interrupt Priority Register (IPR)