CDX-805 - Sony Car Audio Service Manual (repair manual). Page 23

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IC502
CXK58257BM-10LL-T6
MEMORY
MATRIX
512X512
ROW
DECODER
BUFFER
1
A14
2
3
4
5
A5
A12
A7
A6
26 A13
25 A8
24
23 A11
A9
I/O GATE
COLUMN
DECODER
BUFFER
6
A4
7
8
9
10
A0
A3
A2
A1
27
28 VCC
WE
22 OE
21 A10
BUFFER
18 I/O7
17 I/O6
16
I/O4
I/O5
19 I/O8
15
I/O BUFFER
11
12
13
I/O3
I/O1
I/O2
20 CE
14
GND
LEVEL
SHIFT
LEVEL
SHIFT
LEVEL
SHIFT
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