Sharp CD-MD3000H Service Manual page 105

IC1202 RH-iX2474AFZZ: 4Mbit D-RAM (IX2474AF)
Terminal Name
Pin No.
1, 2 I/O1, I/O2
3 WE
4 RAS
5 A9
6-9 A0-A3
10 Vcc
11-15 A4-A8
16 OE
17 CAS
18, 19 I/O3, I/O4
20 GND
4
RAS
17
CAS
CBR Refresh
Counter
Row Address
5
A0
Buffer
Row Address
A9
15
Buffer
20
V
SS
17
CAS
IC1301 VHiFTD2005/-1: Head Driver (FTD2005)
G2
5
S2 6
S2
7
D2 8
Figure 105-2 BLOCK DIAGRAM OF IC
IC1402 VHi58X2402T-1: EEPROM (58X2402T)
Pin No. Terminal Name
1-3 A0~A2
4 VSS
5 SDA
6 SCL
7 WP
8 VCC
Data input/Data output
Write enable
Row address storobe
Address input
Address input
Power (3.3V)
Address input
Output enable
Column address storobe
Data input/Data output
Ground
Clock Generator
SELF Refresh
Timer
MN42V4400 Only
Row Decoder Word Driver
Column Decoder Sense Amp.
On ChipVBB
V
BB
Generator
Figure 105-1 BLOCK DIAGRAM OF IC
G1
4
S1
3
S1
2
D1
1
Device address
Ground
Serial data input/output
Serial clock input
Write protect
Power supply
Figure 105-4 BLOCK DIAGRAM OF IC
Function
Memory
Cell
I/O
Selection
IC1302 VHiCPH5608/-1: Head Driver (CPH5608)
G1
5
Figure 105-3 BLOCK DIAGRAM OF IC
Function
8 7 6 5
1 2 3 4
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CD-MD3000H/CD-MD3000W
Write Clock
3
WE
Generator
Data Input
Buffer
1
2
DQ0~DQ3
18
19
Data Output
16
Buffer
S G2
4 3
1 2
D1 D2
OE