The following figure shows the interrupt structure of the PIB.
PIRQ0_
PIRQ Route
Control Register
PIRQ1_
PIRQ Route
Control Register
PIRQ2_
PIRQ Route
Control Register
PIRQ3_
PIRQ Route
Control Register
Figure 5-2. PIB Interrupt Handler Block Diagram
Timer1/Counter0
IRQ1
IRQx
IRQ3
IRQ4
IRQ5
IRQ6
IRQx
IRQ7
IRQx
IRQ8
IRQ9
IRQ10
IRQ11
IRQx
IRQ12
IRQ13
IRQ14
IRQ15
Interrupt Handling
0
1
2
3
INTR
Controller 1
(INT1)
4
5
6
7
0
1
2
3
Controller 2
(INT2)
4
5
6
7
1897 9609
5
5-5