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Yamaha MDX-E300 Service Manual page 50

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MDX-E300
IC1202 : IX2474AF
4M Bit D-RAM
4
RAS
17
CAS
5
A0
A9
15
20
V
SS
17
CAS
Pin No.
Name
1, 2
DQ0, DQ1
3
WE
4
RAS
5
A9
6 — 9
A0-A3
10
VDD
11 — 15
A4-A8
16
OE
17
CAS
18, 19
DQ2, DQ3
20
Vss
IC1402 : 58X2402T
EEPROM
Pin No.
Name
1 — 3
A0 — A2
4
VSS
5
SDA
6
SCL
7
WP
8
VCC
50
Clock Generator
CBR Refresh
SELF Refresh
Counter
Timer
MN42V4400 only
Row Address
Row Decoder
Buffer
Row Address
Column Decoder
Buffer
On ChipVBB
V
BB
Generator
Data input/data output
Write enable
Low address strobe
Address input
Address input
Power supply (3.3V)
Address input
Output enable
Column address strobe
Data input/data output
Power supply (0V)
8
7
6
5
1
2
3
4
Function
Device address
Ground
Serial data input/output
Serial clock input
Write protect
Power supply
Memory
Word Driver
Cell
Sense Amp.
I/O
Selection
Function
Write Clock
3
WE
Generator
Data Input
Buffer
1
2
DQ0~DQ3
18
19
Data Output
16
OE
Buffer

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