Parts - Pioneer MJ-D508 Service Manual

7.2 PARTS

7.2.1 IC
M5M4V4400CTP-7 (IC103: CORE MAIN UNIT ASSY)
DRAM
Pin Assignment (Top view)
DQ1
26
1
DQ2
25
2
W 3 24
RAS 4 23
A9
5 22
A0 9 18
A1 17
10
A2 11 16
A3
12 15
VCC
14
13
Block Diagram
23
CAS
4
RAS
W
3
A0
9
A1
10
A2
11
A3
12
A4
14
A5
15
A6 16
A7 17
A8
18
A9
5
Pin Function
No. Name
VSS
1 DQ1
Data Input/Output
DQ4
2 DQ2
DQ3
3 W Write control input
CAS
OE
4 RAS Line address strobe input
5 A9 Address input
6
|
A8
8
A7
A6
9 A0
A5
| | Address input
12 A3
A4
13 Vcc Power supply voltage (+3.3 V)
Clock Generation Circuit
Column Decoder
Sense Reflesh Amp.
Input/Output
Control Circuit
Memory Cell
(4194304bits)
¶ The information shown in the list is basic information and may
not correspond exactly to that shown in the schematic diagrams.
Description No.
14
|
18
19
|
21
22
23
24
25
26
Input
Buffer
Output
Buffer
MJ-D508
Name Description
A4
| Address input
A8
OE Output-enable input
CAS Column address strobe input
DQ3
Data Input/Output
DQ4
Vss Ground (0 V)
Vcc (3.3V)
13
Vss (0V)
26
DQ1
1
2 DQ2
DQ3
24
DQ4
25
OE
22
55