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• Block 2
Port Address Select Circuit
147
A.
A'
144
145
142
SW-I
LS2&'h2
le4
5.51\"6
RA I
+5V
..
I.
I e4
I e4
le4
le5
le 5
CE
.SV
• Block 3
Baud Rate Oscillation and Setting Circuit
R~OK
10
REiE'f
.SV'-~""'+'"
B
II
I .••
JI ....
+'V _ _ _ ---='.::j4
..
IC I
MCI4411
ICl
RH·iX0297PAZZ (MC144ll)
PIN ASSIGNMENT
(Top View)
24
2
23
3
22
4
21
20
6
19
18
8
17
9
16
10
15
11
14
12
13
Rite Sllect A 23
RI.I Select 8 22
Cryltlljn 21
• "
Cryltl1o..n: 20
R.Mt
10
sw-z
IBI
5
IC3,4
RH·iX0190PAZZ
(SN74LS266N)
PIN ASSIGNMENT
(Top View)
1A2
BLOCK DIAGRAM
I
.1
Divide ...
Rill
Select
LotiC
(
(
c
c
Fl
11
f2
2
F3
16
F4
3
F5
15
f6
4
F7
5
F8
7
F9
e
Fl0
8
Fll
14
f12
13
FI3
C
11
F14
18
F16
19
F16
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