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3 7 63 1515 0
• IC Block Diagrams
– TUNER Section –
IC21 LC72130
TE
L 13942296513
IC41 LA1835
www
.
http://www.xiaoyu163.com
20
19
24
23
22
21
PHASE DETECTOR
CHARGE PUMP
UNLOCK
DETECTOR
REFERENCE
SWALLOW COUNTER
DIVIDER
1/16, 1/17 4BITS
C
2
B
DATA SHIFT REGISTER LATCH
I/F
2
3 4 5 6
1
30
29
28
27
26
ALC
AM
AM
AM
RF. AMP
OSC
MIX
BUFF
AGC
S METER
FM
IF
AM/FM
IF
COMP
LEVEL
S-CURVE
BUFF
DET
TUNING
DRIVE
FM
FM
DET
IF
REG
GND
1
2 3
4
5
6
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ao
u163
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i
http://www.xiaoyu163.com
2 9
8
18
17
16
15
POWER
ON
1/2
RESET
12BITS PROGRAMMABLE
DRIVER
7
8
9
10
11
Q Q
3
6 7
1 3
1 5
25
24
23
22
ANTI BIRDIE
AM
DET
FF
VCO
AM/FM
SW
AM
FM
VCC
7
8
9
10
11
co
.
– 81 –
9 4
2 8
14
13
UNIVERSAL
COUNTER
12
0 5
8
2 9
9 4
21
20
19
18
17 16
DECODER
STEREO
SW
STEREO
DRIVE
TRIG
MUTE
FF
FF
PILOT
DET
PHASE
DET
12
13
14
15
m
9 9
2 8
9 9
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