Table of Contents
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HCD-GX255/RG170/RG470
IC303 BH15FB1WG
THERMAL
PROTECTION
OVER CURRENT
PROTECTION
VOLTAGE
CONTROL
REFERENCE
BLOCK
1
2
3
– CD-G Board –
IC1002 MSM514400E-60TS-K
DQ1
1
DQ2
2
WE
3
WRITE
CLOCK
GENERATOR
CLOCK
GENERATOR
2
CLOCK
GENERATOR
1
MODE
RAS
4
CONTROL
A9
5
A0
9
A1
10
A2
11
A3
12
VCC
13
IC1005 SN74AHCT04NSR
VCC
14
13
12
11
10
1
2
3
4
68
4
5
DATA INPUT
DATA OUTPUT
BUFFER
BUFFER
4M BIT
SENSE AMP
COLUMN
MEMORY
DECODER
I/O GATE
CELL
ROW
DECODER
REFRESH
ADDRESS
PRE-
ADDRESS
DECODER
BUFFER
COUNTER
9
8
5
6
7
GND
– DRIVER Board –
IC701, 712 BA6956AN
1
2
3
26
VSS
25
DQ4
DQ3
24
CAS
23
22
OE
BOARD
BIAS
GENERATOR
A8
18
17
A7
A6
16
15
A5
14
A4
IC1006 NJM2561F1-TE2
POWER SAVE
1
VOUT
2
VSAG
3
TSD
CONTROL LOGIC
4
5
6
7
8
LOW-PASS
75 OHM
FILTER
DRIVER
CLAMP
9
6
VCC
5
GND
VIN
4
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