Sony CDX-838 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
IC502 KM62256DLG-7LT L 13942296513
LEVEL
A14 1 BUFFER
SHIFT
A12 2
A7 3
A6 4
A5 5
6
A4
7
A3
LEVEL
BUFFER
SHIFT
8
A2
9
A1
10
A0
I/O1 11
LEVEL
I/O2 12
BUFFER
SHIFT
I/O3 13
14
GND
www
.
32
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DATA OUTPUT
BUFFER BUFFER
4M BIT
COLUMN SENSE AMP
MEMORY
I/O GATE
CELL
ROW
DECODER GENERATOR
REFRESH
ADDRESS PRE-
ADDRESS
BUFFER DECODER
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
DQ3
24
CAS
23
22 OE
BOARD
BIAS
A8
18
17 A7
A6
16
15 A5
14 A4
Q Q
IC601 AK4321-VF-E2
3 6 7 1 3
28 VCC
24 23 22
27
WE
26 A13
25 A8
24 A9
23 A11
CTF
22 OE
21 A10
CTF
CLOCK OSC/DIVIDER
20 CE
19 I/O8
18 I/O7
1 2 3
17 I/O6
16 I/O5
15 I/O4
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.
2 9 9 4 2 8
1 5 0 5 8 2 9 9 4
21 20 19 18 17 16 15 14
SERIAL INPUT
INTERFACE
∆Σ 8 ×
SCF
MODULATOR
INTERPOLATOR
∆Σ
8 ×
SCF
MODULATOR INTERPOLATOR
DE-EMPHASIS
CONTROL
4 5 6 7 8 9 10 11
m
co
9 9
2 8 9 9
13
12