-10
Serial
Ports
D e v i c e
A s y n c h r o n o u s ( S t a r t S t o p S y n c h r o n o u s )
S y n c h r o n o u s
C h a n n e l s
2 C h a n n e l s ( C h a n n e l - A ,
C h a n n e l - B )
B a u d - R a t e C l o c k
CTC (Programmable)
Baud-Rate .
A s y n c h r o n o u s m o d e
1 5 0 ,
3 0 0 , 6 0 0 ,
1 2 0 0 ,
2 4 0 0 ,
4 8 0 0 ,
9 6 0 0 ,
1 9 2 0 0 BPS
Synchronous mode
3 0 0 ,
6 0 0 ,
1 2 0 0 ,
2 4 0 0 ,
4 8 0 0 ,
9 6 0 0 ,
1 9 2 0 0 ,
3 8 4 0 0 BPS
S e t b y D I P - S w i t c h e s ,
e a c h
c h a n n e l
i n d e p e n d e n t l y .
I n t e r f a c e
DMA
C h a n n e l - A RS-232-C
C h a n n e l - B
R S - 2 3 2 - C o r 2 0 m A C u r r e n t - L o o p
W h e n T r a n s m i t t i n g / R e c e i v i n g b u f f e r i s a t
s t a t e
o f
r e a d i n e s s .
I t
p o s s i b l e t o
i n p u t
t o
C P U ,
D M A t r a n s f e r r e q u e s t
b y
s p e c i f i c
p r o g r a m .
B r e a k - O u t
V e c t o r b y t h e
f o l l o w i n g
o n l y p o s s i b l e w i t h
s p e c i f i c
p r o g r a m .
I n t e r r u p t i o n
T r a n s m i t t i n g
b u f f e r i s e m p t y .
R e c e i v i n g c h a r a c t e r
i s v a l i d .
C h a n g e o f s t a t u s
B r e a k - o u t e r r o r s ( P a r i t y , O v e r R u n ,
F r a m i n g , E n d o f F r a m e )