Sanyo DWM-1000, Service Manual

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IC BLOCK DIAGRAM & DESCRIPTION
IC101 BU4066BCF (Quad Analog Switch)
SWA
OUT / IN IN / OUT
SWD
OUT / IN IN / OUT
SWB
IN / OUT OUT / IN
SWC
OUT / IN IN / OUT
V
DD
14 I / O
1
1
C
1
13
C
4
12
I / O
4
11
10
O / I
3
9
I / O
3
8
O / I
1
2
O / I
2
3
I / O
2
4
C
2
5
C
3
6
V
ss
7
O / I
4
IC201 T224162B-35S (DRAM)
1
18
19
20
21
24
25
26
27
28
16
6
29
2~5
7~10
35~38
40~43
I/O1~I/O4
I/O7~I/O8
I/O9~I/O12
I/O13~I/O16
39
2
3
4
5
6
7
8
9
10
13
14
44
43
42
41
40
39
38
37
36
35
32
31
V
SS
OE
CASL
CASH
V
CC
NC
NC
NC
WE
V
CC
V
CC
15
16
17
18
19
20
21
22
30
29
28
27
26
25
24
23
NC
A7
A8
A6
A5
A4
V
SS
RAS
A0
A1
A2
A3
V
CC
A0
15
31
30
A1
A2
A3
A4
A5
A6
A7
A8
PIN NO. TYPE SYM. DESCRIPTION
Address Input
Row Address Strobe
Column Address Stlobe /Upper Byte Control
Column Address Stlobe /Lower Byte Control
Write Enable
Output Enable
Data Input /Output
Power, 5V
Ground
No Connec
A0~A8
RAS
CASH
CASL
WE
OE
V
CC
V
SS
NC
I/O1-I/O16
Input
Input
Input
Input
Input
Input
Supply
Ground
-
Input/Output
16~19,22~26
14
28
29
13
27
1,6,20
21,35,40
11,12,15,30
2~5,6~10,31~34,36~39
WE
RAS
CASL
CASH
OE
I/O1
I/O2
I/O3
I/O4
I/O5
I/O6
I/O7
I/O8
V
SS
V
SS
I/O16
I/O15
I/O14
I/O13
I/O12
I/O11
I/O10
I/O9
TSOP44
Top view
16
16
9
9 9
8 8
9
9
CONTROL
LOGIC
DATA-IN BUFFER
NO.2 CLOCK
GENERATOR
COLUMN
ADDRESS
BUFFER
REFRESH
CONTROLLER
REFRESH
COUNTER
ROW
ADDRESS
BUFFER(9)
NO.1 CLOCK
GENERATOR
RO
W
DECODER
512
512
512x512x16
MEMORY
ARRAY
DATA-OUT
BUFFER
COLUMN
DECODER
SENSE AMPLIFIERS
VO GATING
512x16