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IC BLOCK DIAGRAM & DESCRIPTION
IC241 LC72121M-D(PLL Synthesizer)
2
Vssx
XIN
1
XOUT
24
FMIN
17
AMIN
16
CE
3
DI
4
CCB
I / F
CL
5
DO
6
POWER
V
18
DD
RESET
Vssd
15
IC440 AN7348K(Play/Rec Pre. Amp.)
20
24
23
22
21
A/Rec
Mute
B
PB Amp(L)
PB Amp(R)
A/Rec
Mute
B
1
2
3
4
5
REFERENCE
DIVIDER
SWALLOW COUNTER
1/2
1/16, 1/17 4bits
12bits PROGRAMMABLE
DIVIDER
DATA SHIFT REGISTER LATCH
ON
8
9
7
BO1 BO2 BO3 BO4
19
18
17
16
15
14
R
P
ALC
P
R
Rec
Nor/Cro
Amp(L)
& Hi/Lo
Logic
Rec
Amp(R)
R
Ripple
P
Logic
Rejection
A/B
Logic
Rec/PB
8
10
11
6
7
9
PHASE DETECTOR
10
11
14
IO1 IO2
IC441 LC75342M(Electric Volume)
LSELO LIN LTRE
10
9
13
L4
11
L3
12
L2
13
L1
14
NC
15
NC
16
R1
17
R2
18
R3
19
12
R4
20
21
22
RSELO RIN RTRE
- 20 -
19
CHARGE PUMP
20
UNLOCK
DETECTOR
21
22
UNIVERSAL
13
COUNTER
LBASS1 LBASS2
LOUT
8
7
6
5
LVref
CONTROL
CIRCUIT
LOGIC
CCB
CIRCUIT
INTERFACE
CONTROL
CIRCUIT
RVref
23
24
25
26
RBASS1 RBASS2
ROUT
PD
AIN
AOUT
Vssa
IFIN
4
TEST
3
V
SS
2
CE
1
DI
30
CL
29
V
DD
28
Vref
27
NC
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