JVC TH-A5R Service Manual

TH-A5R
1-26
RAS
WE
CASL
CASH
3. Block diagram
1. Pin layout
M11B416256A (U1) : DRAM
2. Pin function
Pin No.
16~19,22~26
14
28
29
13
27
2~5,7~10,31~34,36~39
1,6,20
21,35,40
11,12,15,30
Symbol
A0~A10
RAS
CASH
CASL
WE
OE
I/O0~I/O15
Vcc
Vss
NC
Function
Address Input
Row Address Strobe
Column Address Strobe/Upper Byte Control
Column Address Strobe/Lower Byte Control
Write Enable
Output Enable
Data Input/ Ountput
Power, 5V
Ground
No Connect
9
9
9
9
9
8
8
16
16
CONTROL
LOGIC
NO.2 CLOCK
GENERATOR
NO.1 CLOCK
GENERATOR
COLUMN
ADDRESS
BUFFER
REFRESH
CONTROLLER
REFRESH
COUNTER
ROW
ADDRESS
BUFFERS(9)
DATA-IN BUFFER
DATA-OUT
BUFFER
COLUMN
DECODER
SENSE AMPLIFIERS
I/O RATING
512 x 16
512 x 512 x 16
MEMORY
ARRAY
ROW
DECODER
512
512
A0
A1
A2
A3
A4
A5
A6
A7
A8
I/O0
.
.
I/O15
CE
Vcc
Vss
I/O
I
I
I
I
I
I
I/O
Supply
Ground
-
CAS
Vcc
I/O0
I/O1
I/O2
I/O3
Vcc
I/O4
I/O5
I/O6
I/O7
NC
NC
WE
RAS
NC
A0
A1
A2
A3
Vcc
Vss
I/O15
I/O14
I/O13
I/O12
Vss
I/O11
I/O10
I/O9
I/O8
NC
CASL
CASH
OE
A8
A7
A6
A5
A4
Vss
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
40
39
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
23
22
21

JVC TH-A5R Specifications

General

Brand	JVC
Model	TH-A5R
Category	Home Theater System
Language	English