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S3C9454B/F9454B
5
INTERRUPT STRUCTURE
OVERVIEW
The SAM88RCRI interrupt structure has two basic components: a vector, and sources. The number of interrupt
sources can be serviced through an interrupt vector which is assigned in ROM address 0000H.
INTERRUPT PROCESSING CONTROL POINTS
Interrupt processing can be controlled in two ways: either globally, or by specific interrupt level and source.
The system-level control points in the interrupt structure are therefore:
— Global interrupt enable and disable (by EI and DI instructions)
— Interrupt source enable and disable settings in the corresponding peripheral control register(s)
VECTOR
0000H
0001H
NOTES:
1. The SAM88RCRI interrupt has only one vector address (0000H-0001H).
2. The numbern of Sn value is expandable.
Figure 5-1. S3F9-Series Interrupt Type
INTERRUPT STRUCTURE
SOURCES
S1
S2
S3
Sn
5-1
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