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Sanyo DC-MP7500(BK)/(XE) Service Manual page 16

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IC BLOCK DIAGRAM & DESCRIPTION
IC222 TC9257F (Tuner PLL IC)
FM
L
AMP
FM
1/ 2
IN
FM
AM
IN
XT
OSC
CIRCUIT
XT
DATA
CLOCK
PERIOD
(Note)
Mark terminals are not existence in TC9256P, TC9256F.
Terminal name of TC9256P, TC9256F is shown in parentheses.
Others are common terminals.
IC440 AN7348K (Play / REC Preamprifier)
24
A/Rec
B
PSC
2 MODULUS
4bit SWALLOW
PRESCALER
COUNTER
HF
H
12bit PROGRAMMABLE COUNTER
FM
MODE LF
REFERENCE COUNTER
1ms
OSC
24bit REGISTER
24bit SHIFT REGISTER
8
TEST
ADDRESS
DECODER
24bit REGISTER
4
4
OUTPUT PORT
UNIVERSAL COUNTER CONTROL
OT-4
OT-1
OT-3
OT-2
OT-4
23
22
21
20
Mute
PB Amp(L)
PB Amp(R)
A/Rec
Mute
B
1
2
3
4
5
V
DD
POWER ON
RESET
12
4
MAX
15
4
5
24
22
10
20bit BINARY COUNTER
XT
1ms
20
19
18
1
2
19
18
16
17
P
ALC
R
Rec
Amp(L)
Rec
Amp(R)
R
Logic
A/B
Logic
Rec/PB
8
6
7
9
- 15 -
GND
RESET
TRI-STATE
DO1
BUFFER
TRI-STATE
DO2
BUFFER
(DO2 / OT-4)
OT-4
UNLOCK
I / O-5 / CLK
5
I / O-6
I / O-9 / IF
AMP
I / O-8 / IF
AMP
GATE
I / O-7 / SC
17
16
15
14
13
12
11
3
4
5
6
7
8
9
10
14
13
15
R
P
Nor/Cro
& Hi/Lo
Logic
Ripple
P
Rejection
10
11
12
IN2
(I / O-6 / IF
)
IN2
IN1
(I / O-5 / IF
)
IN1
IN

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