Aiwa XD-DV380 Service Manual page 48

IC BLOCK DIAGRAM -2/3
QQ
3 7 63 1515 0
IC, GLT440L16
27
OE
WE 13
28
UCAS
29
LCAS
14
RAS
V
1
CC
V 6
CC
20
V
CC
21
V
SS
V 35
SS
V 40
SS
A
16
0
A 19
4
A
5 22
AND PREDECODERS
26
A
8
TE
L 13942296513
IC, KA78R12
Vin
Vdis
www
.
http://www.xiaoyu163.com
RAS CLOCK CAS CLOCK
GENERATOR GENERATOR
REFRESH
COUNTER
9
ADDRESS BUFFERS
X - x
0
1
THERMAL SHUTDOWN
BANDGAP REFERENCE
HIGH / LOW OUTPUT
ON / OFF
4
-
+
1.4V
x ao
y
i
http://www.xiaoyu163.com
8
WE CLOCK
GENERATOR
Data I/O BUS
COLUMN DECODERS
SENSE AMPLIFIERS
Y - Y
0 8
512 16
ROW
MEMORY
DECODERS
ARRAY
8
512
Q Q
3 6 7 1 3
OVERVOLTAGE
PROTECTION
-
+
SOA PROTECTION
SHORT-CIRCUIT SHORTCIRCUIT
PROTECTION
3
GND
u163
.
-48-
2 9 9 4 2 8
OE CLOCK
GENERATOR
I/O
BUFFER
1 5 0 5 8 2 9 9 4
2 Vo
m
co
9 9
11
N.C
12
N.C
15
N.C
30
N.C
2 I/O1
3 I/O2
4
I/O3
5 I/O4
7
I/O5
8
I/O6
9
I/O7
10 I/O8
31
I/O9
32
I/O10
33 I/O11
34
I/O12
36 I/O13
37
I/O14
38
I/O15
39
I/O16
2 8 9 9