Sharp CE-150 - Page 310

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3-3. Internal structure
70
3-3-1. Block diagram
The I/ 0 pon c ont ro ll er consists of nine i mcrnal re gisters. wait com rolle r. serial cont ro ll er .
a nd inter ru pt contr oll er. and each of int <;:rn al registers ca n be a cce sse d as one loca1i <.> n of
the 111 crn or y as seen fro n1 the Cf)U.
1/0 port controller system block di agram
., .,
C1 · " $r
11
!.
1
--+--ll- -ll- l-H-+i---+-~ -H-- -ff- +-rl!-fi---+--, --- -11--l, e
9
, .. ,<- • • - : ~
~ v *il' ' -" c so
COll:.'ol - : C$ l
Y!~ l -rt 1' - C. \&
'< C •. ~ • O s•
"" ,
3-3-2. · Internal registers
(j) G register (R S3 - 0 = 1001)
i; 1 ' (1; ' ~ (.4 G3 G2 (ll (t)
-T- ' -
L_ .,
OM<' ;;lion
(j '
-¢ - 1n:cn•:d c: locik.
'
9 - e;o. l e r ~ I C IOC li.:
1
.
•
tntc- rr _.1 ~ 10¢l
Cl ock <1 e1n1 -e d l i on "\
.. 0$
•
£it~'"' ' tl6o:: J;:
CI OCk ., ( •o w(l (I !•O•n
CLO .
"' ,
- >I" •. "'
Clock rll! \'
0 0 0
<Jo -:- l
00
1 .P -t2
,p + 1 28
- ~
1 0
<ti : 256
0
1
I
• 1
1 ?,
0 ¢ -:-512
~ -:- 1 02 4 1
0
1 1 0
9+20- :S
l I
I
9+'()')$
(• F.\'11• )' elor. l tl'l:v ,, i <1 e :v 1•
rn o rw ~ bll GO-.G2
C<
0 C$CU ;'lh Qn
Q C IOC ;, °" """"" ' IMO~
00 ,
'
'
i
'"'
.
- --- -- · -'
I
C!oe'-W ! ~
• r;1 r. :. -c- 1" ·e c>llil'y .n me
I C1 • (:6
(;S-;j°f'lpt~ h.:i f{;O l <ll'O ) \.\ t~~ !t"illl
1
0 . 0
o · 2,51 .... 1 1. s1
on t.'rnal c soc ' m ()(f (lo
I ' 2.St 6.51
I)! ('; 3= 0
0 0
*fl
0 2.Sl
3.51
. 0 . 1
-, -. - - 2.St
2. $1
l
0 0
} , 51
12.51
.
1
0
I t.S t 7 .St
l I
0
LS t
·! .St
I CPU O p(•1 1l ~1n l}
.
LS t
3.51
l•flq1 ~nc y
l
I
I
· 111 e (i register c an read/w rit e dat a wh en l' cg is 1er is selected (1 001).
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