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A
4
TXD
R X D
3
RS-232 ENABLE
RS-232 ENABLE
N/C
RS-232 DISABLE
1 - 2
2
1
A
B
U 6
28
C 1 +
C 2 6
1.0 uF
24
C1-
1
C 2 +
C 2 9
1.0 uF
2
C2-
J G 5
T X
14
1
2
T1IN
R X
T2IN
13
3
4
T2IN
T3IN
12
T3IN
20
T4
1
R 2 O U T B
19
R 1 O U T
18
T5
1
R 2 O U T
17
T6
1
R 3 O U T
16
T7
1
R 4 O U T
+3.3V
15
T8
1
R 5 O U T
/ E N
23
F O R C E O N
R 5 2
22
F O R C E O F F
1 K
M A X 3 2 4 5 E E A I
J G 8
1
2
Title
SCI PORT, RS-232 AND CONNECTOR
Document
Size
Number
A
Date:
B
Figure A-5. SCI PORT, RS-232 and Connector
C
+3.3V
26
V C C
C 2 7
3
V-
1.0 uF
C 2 8
27
V +
1.0 uF
25
G N D
9
T 1 O U T
10
T 2 O U T
1
T2
11
T 3 O U T
1
T3
4
R 1 I N
R 2 I N
5
R 2 I N
R 3 I N
6
R 3 I N
R 4 I N
7
R 4 I N
R 5 I N
8
R 5 I N
21
I N V A L I D
1
T1
DSP56852EVM.DSN
Thursday, January 10, 2002
Designer:
C
D
E
P 6
1
DCD
6
DSR
2
TXD
7
CTS
3
RXD
8
RTS
4
DTR
9
RI
5
GND
R 5 0
/ E N
SCI
R 5 1
T2IN
RS-232
CONNECTOR
R 5 3
T3IN
R 5 4
R 2 I N
R 5 5
R 3 I N
R 5 6
R 4 I N
R 5 7
R 5 I N
DSP Standard Products Division
2100 East Elliot Road
Tempe, Arizona 85284
(480) 413-5090
FAX: (480) 413-2510
Sheet
of
D S P D D e s i g n
5
D
E
4
+3.3V
3
1 K
1 K
1 K
1 K
1 K
1 K
2
1 K
1
Rev.
1.4
1 0
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