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Philips QCG1.0S Service Manual Page 33

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8.12 Diagram
Extension Board:
RS232, SP3243 (IC U29)
Block Diagram
Pin Configuration
Figure 8-12 Internal block diagram and pin configuration
IC Data Sheets
V
CC
+
26
0.1 μ F
C5
V
CC
28
C1+
+
0.1 μ F
C1
24
C1-
1
C2+
SP3243
+
0.1 μ F
C2
2
C2-
T
IN
14
1
T
IN
13
2
TTL/CMOS
INPUTS
T
IN
12
3
R
OUT
20
2
R
OUT
19
1
5KΩ
R
OUT
18
2
TTL/CMOS
OUTPUTS
R
OUT
17
3
5KΩ
R
OUT
16
4
5KΩ
R
OUT
15
5
5KΩ
V
CC
22
SHUTDOWN
23
ONLINE
To μP Supervisor
21
STATUS
Circuit
GND
25
1
28
C2+
C1+
2
27
V+
C2-
3
V
V-
26
4
R
IN
25
GND
1
5
24
R
IN
C1-
2
SP3243
R
IN
23
6
ONLINE
3
7
22 SHUTDOWN
R
IN
4
8
21
R
IN
STATUS
5
T
OUT
9
R
20
1
T
OUT
10
R
19
2
11
T
OUT
18
R
3
T
IN
12
17
R
3
13
16
T
IN
R
2
T
IN
14
15
R
1
QCG1.0S LA
27
V+
+
0.1 μ F
C3
3
V-
0.1 μ F
C4
+
T
OUT
9
1
T
OUT
10
RS-232
2
OUTPUTS
T
OUT
11
3
R
IN
4
1
R
IN
5
2
5KΩ
R
IN
6
RS-232
3
INPUTS
R
IN
7
4
R
IN
8
5
CC
OUT
2
OUT
1
OUT
2
OUT
3
OUT
4
OUT
5
18430_311_090205.eps
090205
8.
EN 33
2009-Feb-20

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