Sony CDX-737 Service Manual page 32

QQ
3 7 63 1515 0
IC402 MSM514400D-60TS-K
DQ1
1
DQ2 2
WE 3
WRITE
DATA INPUT
CLOCK
GENERATOR
CLOCK
GENERATOR
2
DECODER
CLOCK
GENERATOR
1
MODE
RAS
4
CONTROL
A9
5
A0
9
A1
10
A2
11
A3
12
VCC 13
TE
L 13942296513
IC502 KM62256DLG-7LT
LEVEL
A14 1 BUFFER
SHIFT
A12 2
3
A7
4
A6
5
A5
6
A4
7
A3
LEVEL
BUFFER
SHIFT
8
A2
A1 9
A0 10
11
I/O1
LEVEL
12
I/O2
BUFFER
SHIFT
13
I/O3
GND 14
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.
32
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DATA OUTPUT
BUFFER BUFFER
4M BIT
COLUMN SENSE AMP
MEMORY
I/O GATE
CELL
ROW
DECODER GENERATOR
REFRESH
PRE-
ADDRESS
ADDRESS
DECODER
BUFFER
COUNTER
MEMORY
ROW
MATRIX
DECODER
512X512
I/O GATE
COLUMN
DECODER
I/O BUFFER
x ao
y
i
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8
26 VSS
25 DQ4
24 DQ3
CAS
23
22 OE
BOARD
BIAS
A8
18
17 A7
16 A6
15 A5
A4
14
Q Q
3 6 7 1 3
IC601 TC9464FN-EL
28 VCC
24 23 22
27 WE
INTERFACE
CIRCUIT
26 A13
25 A8
24
A9
23 A11
DIGITAL FILTER CIRCUIT
ATTENUATOR OPERATIONAL CIRCUIT
22 OE
21 A10 DEEMPHASIS FILTER CIRCUIT
D-∆ MODULATION CIRCUIT
TEST
20 CE
CIRCUIT
19 I/O8
18 I/O7
17 I/O6
16
I/O5
15
I/O4
1 2 3 4
u163
.
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
20 19 18 17 16 15
21
MICROCOMPUTER
OSC
INTERFACE
CIRCUIT
TIMING
GENERATOR
OUTPUT OUTPUT
CIRCUIT CIRCUIT
ANALOG ANALOG
FILTER FILTER
5 6 7 8 9 10
m
co
9 9
2 8 9 9
14 13
11 12