General Information - Pioneer MJ-L5 Service Manual

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7. GENERAL INFORMATION

7.1 IC
• The information shown in the list is basic information and may not correspond exactly to that shown in the schematic diagrams.
•
List of IC
M5M4V4400CTP-7, M56758FP, PD5450A, LR376481, BD7910FV, BR93LC56F, IR3R55M, AK4520A, PDG225A,
LV1035M, PDC046
M5M4V4400CTP-7 (MD CORE MAIN UNIT : IC103)
• DRAM
•
Pin Assignment (Top View)
DQ1
1
DQ2
2
W 3
RAS 4
A9 5
9
A0
A1 10
A2 11
A3
12
TE
L 13942296513
VCC
13
•
Block Diagram
CAS
RAS
W
A0
A1
A2
A3
www
A4
A5
A6
A7
A8
.
A9
http://www.xiaoyu163.com
•
Pin Function
No. Name
VSS
26
1 DQ1
DQ4
25
24 DQ3
2 DQ2
23
CAS
3 W
22
OE
4 RAS
5 A9
6
18
A8
|
A7
17
8
A6
16
9 A0
A5
15
| |
14 A4
12 A3
13 Vcc
23
4
3
9
10
11
12
14
15
x ao
16
y
17
18
i
5
http://www.xiaoyu163.com
8
Description
Data Input/Output
Write control input
Line address strobe input
Address input
Q Q
3 6 7 1 3
Address input
Power supply voltage (+3.3 V)
Clock Generation Circuit
Column Decoder
Sense Reflesh Amp.
Input/Output
Control Circuit
Memory Cell
(4194304bits)
u163
.
MJ-L5, SP-L5
2 9 9 4 2 8
No. Name Description
14 A4
| | Address input
18 A8
19
|
21
22 OE Output-enable input
23 CAS Column address strobe input
24 DQ3
Data Input/Output
25 DQ4
1 5 0 5 8 2 9 9 4
26 Vss Ground (0 V)
Vcc (3.3V)
13
Vss (0V)
26
Input
Buffer
DQ1
1
DQ2
2
DQ3
24
DQ4
25
Output
Buffer
m
co
OE
22
9 9
2 8 9 9
59