Pioneer XR-VS99 Service Manual page 69

QQ
3 7 63 1515 0
PDK032A (VCD ASSY : IC1751)
• 1M ROM
•
Block Diagram
A16 2
A15 3
A14 29
A13 28
A12 4
A11 25
A10 23
A9 26
A8 27
A7 5
A6 6
A5 7
A4 8
A3 9
A2 10
TE
L 13942296513
A1 11
A0 12
CE 22
OE 24
OE /OE 1
1 1
/D.C.
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TIMING
CE
GENERATOR
BUFFER
OE
BUFFER
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2 9
8
MEMORY MATRIX
(131,072 x 8bit)
COLUMN SELECTOR
Q Q
3 6 7 1 3 1 5
SENSE AMP
32 16
Vcc
GND
co
.
XR-VS99
9 4 2 8
21
20
19
18
17
15
14
13
0 5 8 2 9 9 4 2 8
m
9 9
D7
D6
D5
D4
D3
D2
D1
D0
9 9
69