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IC BLOCK DIAGRAM & DESCRIPTION
IC801 TA2109F (SERVO AMP)
SBAD 13
FEO 14
FEN 15
VRO 16
RFRP 17
RFIS 18
PEAK
BOTTOM
RFGO 19
RFGC 20
AGCI 21
RFO 22
GND 23
RFN 24
LDC
SEL
SW1
SW2
SW3
L
ON
OFF
OFF
HiZ
OFF
ON
H
OFF
ON
IC401 TC9422F (LATCH)
INPUT
SELECTOR
L-IN1
2
L-IN2
3
L-IN3
4
GAIN CONTROL
0, 6, 12, 18dB
L-IN4
5
L-SW-OUT
6
L-VR-IN
7
L-B1
8
L-B2
9
L-B3
10
CAPACITOR FOR
OSCILLATION
L-Tone-OUT
11
12
L-T1
Vref
3 STATE
DET.
I - I
I - I
ON
ON
GND
V
DD
1
28
INPUT
SELECTOR
GAIN CONTROL
0, 6, 12, 18dB
CAPACITOR FOR
OSCILLATION
32BIT SR
13
14
15
16
CK
DATA
STB
IC203 HT1622-64QFP
12
TEO
OSCI
7
11
TEN
CS
1
10
2 VRO
RD
3
WR
4
9
TEB
DATA
5
8
SEL
VDD
8
7
LDO
VSS
6
BZ
11
6
MDI
BZ
13
5
TNI
4
TPI
3
FPI
IC101 TA2104BN(TUNING SYSTEM)
FM
RF
AM
2
FNI
RF OUT
Vcc
RF IN
24
23
22
1
Vcc
AM
MIX
FMRF
1
2
3
RF
FM
AM
GND
RF IN
LOW
CUT
IC501 TA8227P (POWER AMP.)
27
R-IN1
26
R-IN2
25
R-IN3
24
R-IN4
23
R-SW-OUT
22
R-VR-IN
R-B1
21
20
R-B2
19
R-B3
18
R-Tone-OUT
17
R-T1
- 9 -
Display RAM
Control
and
Timing
Circuit
LCD Driver/
Bias Circuit
Watchdog Timer
Tone Frequency
and
Generator
Time Base Generator
FM
AM
OSC
ST
IF
OSC
OSC
OUT
LED
REQ
21
20
19
18
17
AM
IF
OSC
REQ
SW
FM
ST
AF
OSC
BUFF
BUFF
IF
BUFF
AM
BUFF
ST
OSC
AM
DET
FM
AGC
AMIF
FMIF
MIX
4
5
6
7
8
MIX
Vcc
AM
FM
GND
OUT
IF IN
IF IN
17 COM0
25 COM7
26 SEG0
64 SEG31
9
VLCD
10 IRQ
OET
OUT
LPF1
LPF2
16
15
14
13
AF
VCO
DECODE
DIVIDE
FM
ST/MO
DET
FM/AM
MJTE
9
10
11
12
AGC
QUAD R-OUT
L-OUT
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