Holtek HT46R47 - Page 70

Differing from the other devices in the A/D series, the HT46R24/HT46C24 devices contain two in-
ternal timer counters. Although all the interrupt control functions can still be controlled by two inter-
rupt control registers, also known as INTC0 and INTC1, they have a slightly different structure
from the other devices.
Chapter 1 Hardware Structure
61
I N T C R e g i s t e r H T 4 6 R 4 7 / H T 4 6 C 4 7
I N T C 0 R e g i s t e r H T 4 6 R 2 2 / H T 4 6 C 2 2
H T 4 6 R 2 3 / H T 4 6 C 2 3
M a s t e r I n t e r r u p t g l o b a l e n a b l e
1 : g l o b a l e n a b l e
0 : g l o b a l d i s a b l e
N o t i m p l e m e n t e d , r e a d a s " 0 "
b 7 b 0
E T I E E I E M I
E x t e r n a l i n t e r r u p t e n a b l e
1 : e n a b l e
0 : d i s a b l e
T i m e r / E v e n t C o u n t e r i n t e r r u p t e n a b l e
1 : e n a b l e
0 : d i s a b l e
E x t e r n a l i n t e r r u p t r e q u e s t f l a g
1 : a c t i v e
0 : i n a c t i v e
T i m e r / E v e n t C o u n t e r i n t e r r u p t r e q u e s t f l a g
1 : a c t i v e
0 : i n a c t i v e
A / D c o n v e r t e r r e q u e s t f l a g
1 : a c t i v e
0 : i n a c t i v e
E I F T F
A / D C o n v e r t e r i n t e r r u p t e n a b l e
1 : e n a b l e
0 : d i s a b l e
E A D IA D F
I N T C 1 R e g i s t e r H T 4 6 R 2 2 / H T 4 6 C 2 2
H T 4 6 R 2 3 / H T 4 6 C 2 3
I
2
C B u s I n t e r r u p t e n a b l e
1 : e n a b l e
0 : d i s a b l e
b 7 b 0
E H IH I F
N o t i m p l e m e n t e d , r e a d a s " 0 "
N o t i m p l e m e n t e d , r e a d a s " 0 "
I
2
C B u s i n t e r r u p t r e q u e s t f l a g
1 : a c t i v e
0 : i n a c t i v e