Table of Contents
Advertisement
INTERRUPT STRUCTURE
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 (V
Type 2:
One level (IRQn) + one vector (V
Type 3:
One level (IRQn) + multiple vectors (V
In the S3F80JBmicrocontroller, all three interrupt types are implemented.
Type 1:
Type 2:
Type 3:
5-2
Levels
IRQn
IRQn
IRQn
NOTE:
The number of S
Figure 5-1. S3C8/S3F8-Series Interrupt Types
) + one source (S
)
1
1
) + multiple sources (S
1
– V
) + multiple sources (S
1
n
Vectors
V
1
V
1
V
1
V
2
V
3
V
n
and V
value is expandable.
n
n
– S
)
1
n
– S
, S
1
n
n+1
Sources
S
1
S
1
S
2
S
3
S
n
S
1
S
2
S
3
S
n
S
1
n +
S
2
n +
S
m
n +
S3F80JB
– S
)
n+m
Advertisement
Table of Contents
