Chapter 5 Interrupt Structure; Overview; Interrupt Processing Control Points - Samsung S3C9444 User Manual

S3C9444/F9444_UM_REV1.10 INTERRUPT STRUCTURE
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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.
Figure 5-1. S3F9-Series Interrupt Type

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)
5-1