— 44 —
IC INTERNAL DIAGRAMS
Filter
Amp.
AF
Amp.
IC102
S1T3361D01
IC301
BU2630F
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
XIN
Vss
RPD
P-R
RON
F-R
CE
CK
XOUT
V
DD
TPD
P-T
TON
F-T
LD
DA
14BIT REFERENCE
COUNTER
I / O
CTL
PHASE
DET
16BIT PROGRAM
COUNTER
SHIFT REGISTER
SHIFT REGISTER
SHIFT REGISTER
SHIFT REGISTER
14BIT REFERENCE
COUNTER
16BIT PROGRAM
COUNTER
PHASE
DET
IC104
SM8224CM
AGND
TIP
RING
TRQ
GND
OSCIN
OSCOUT
MODE
TEST
DOUT
DT1
DT2
DTQ
SO
S1
VDD
TO
CR
DTDET
STR
1
2
3
4
5
6
7
8
9
10
20
19
18
17
16
15
14
13
12
11
IC401
µ
PD789166
1
2
3
4
5
6
7
8
9
10
11
P60/ANI0
P60/ANI1
P60/ANI2
P60/ANI3
P60/ANI4
P60/ANI5
P60/ANI6
P60/ANI7
AV
SS
P10
P11
12
13
14
15
16
17
18
19
20
21
22
P30/INTP0/TO81/CPT90
P31/INTP1/TO81
P32/INTP2/TO90
P33/INTP3/TO82/BZO90
P20/SCK20/ASCK20
P21/SO20/T
X
D20
P22/SI20/R
X
D20
P23
P24
IC0
33
32
31
30
29
28
27
26
25
24
23
P01
P00
P26/TO80
P25/T180/SS20
V
DD0
V
SS0
X1
X2
RESET
XT1
XT2
44
43
42
41
40
39
38
37
36
35
34
AV
REF
AV
DD
P53
P52
P51
P50
P51
V
SS
1
P04
P03
P02
V
DD1
Summary of Contents for TRC-447
Page 5: ...5 BLOCK DIAGRAM...
Page 16: ...16 WIRING DIAGRAM...
Page 17: ...17 PRINTED CIRCUIT BOARDS Main Top View...
Page 18: ...18 Bottom View...
Page 19: ...19 SWITCH VOLUME LED MIC CH SW SWR PCBs Top View Bottom View...
Page 21: ...21 5 13 20 1 21 9 10 26...
Page 22: ...22 12 11 18 23 24 25 19 18 20 3 20 9 20 5 20 10 20 11 20 3 20 12 20 13 20 14 20 12...
Page 50: ...51 50 SCHEMATIC DIAGRAMS 21 1576 Main PCB...
Page 51: ...52 SWITCH VOLUME LED MIC CH SW SWR PCBs 21 1576...
Page 52: ...RadioShack Corporation Fort Worth Texas 76102 21 1576 04A04 Printed in Japan...