Samsung S3F80JB manual S3C8/S3F8-Series Interrupt Types

INTERRUPT STRUCTURE S3F80JB

INTERRUPT TYPES

The three components of the S3C8/S3F8-series interrupt structure described above — levels, vectors, and sources — are combined to determine the interrupt structure of an individual device and to make full use of its available interrupt logic. There are three possible combinations of interrupt structure components, called interrupt types 1, 2, and 3. The types differ in the number of vectors and interrupt sources assigned to each level (See Figure 5-1):

Type 1: One level (IRQn) + one vector (V1) + one source (S1)

Type 2: One level (IRQn) + one vector (V1) + multiple sources (S1 – Sn)

Type 3: One level (IRQn) + multiple vectors (V1 – Vn) + multiple sources (S1 – Sn , Sn+1 – Sn+m)

In the S3F80JBmicrocontroller, all three interrupt types are implemented.

Levels

Type 1: IRQn

Type 2: IRQn

Type 3: IRQn

Vectors		Sources
	V1		S1
			S1
	V1		S2
			S3
			Sn
	V1		S1
	V2		S2
	V3		S3
	Vn		Sn
			Sn + 1

Sn + 2

Sn + m

NOTE: The number of Sn and Vn value is expandable.

Figure 5-1. S3C8/S3F8-Series Interrupt Types

5-2