Sony MZ-R55 Service Manual page 32

IC505 MPC17A58DTBEL
36 35 34 33 32 31 30
VG
VC
PRE-DRIVER
STEP
MOTOR
DRIVER
1 2 3 4
IC509 MN41X17400CTT
VDD
1
DQ0
2
DQ1
3
WE
4
5
RAS
NC 5
A10 7
A01 8
A02 9
A03 10
A04
11
12
VDD
ON CHIP
VSS
GENERATOR
29 28 27 26 25
VC
CONTROL
VC
PRE-DRIVER
5 6 7
CLOCK GENERATOR
CBR REFRESH
COUNTER
ROW WORD
ROW
DECODER DRIVER
ADDRESS
BUFFER
COLUMN
ADDRESS
BUFFER
24 23 22 21 20
VC
VC
CONTROL CONTROL
VC
PRE-DRIVER
PRE-DRIVER
HALF
BLIDGE
DRIVER
H BLIDGE
DRIVER
CH3
8
GENERATOR
MEMORY
CELL
SENSE
I/O
AMP
SELECTOR
COLUMN
DECODER
– 48 –
19
VC
VC
CONTROL
VC
VC
PRE-DRIVER
H BLIDGE
DRIVER
CH2
9 10 11 12 13 14 15
24 VSS
CLOCK
23 DQ3
22 DQ2
21 CAS
DATA
INPUT
BUFFER
DATA
OUTPUT
20 OE
BUFFER
A10
19
A09
18
17 A08
16 A07
15 A06
14
A05
VC
CONTROL
VC
PRE-DRIVER
H BLIDGE
DRIVER
CH1
16 17 18