33
IC BLOCK DIAGRAMS
7.7 HD6433396A32F (Mechanism Controller) - U501 on Mechanism P.C.B. Ass’y
Pin No.
Signal Name
I/O
Function
Active
1
RES
I
Reset signal.
2
XTAL
---
CPU clock (6MHz).
3
EXTAL
---
CPU clock (6MHz).
4
MD1
I
CPU mode select input.
5
MDO
l
CPU mode select input.
6
NMI
I
Grounded.
7
STBY
I
Grounded.
8
VCC
---
+5V
9
CLK-IN
l
S-BUS clock input (SCI).
10
DAT-lN
I
S-BUS data input (SCl).
11
SYS-ON
O
System on signal.
H
12
Vss
---
GND
13
NC
---
Not used.
14
NC
---
Not used.
15
NC
---
Not used.
16
NC
---
Not used.
17
NC
---
Not used.
18
BSENS
I
Battery voltage sensing input.
19
ACC-CNT
l
ACC control signal.
20
SQCK
O
Not used.
21
KEY1
I
key I input signal.
22
KEY2
l
key 2 input signal.
23
SCOR
l
Grounded.
24
LD-PLS
I
Loading pulse.
25
UD-PLS
I
Up/Down pulse.
26
KEY3
I
key 3 input signal.
27
KEY4
l
key 4 input signal.
28
KEY5
I
key 5 input signal.
29
AVCC
---
+5V
30
SENSE
I
Grounded.
31
SQSO
l
Grounded.
32
FOK
l
Grounded.
33
GFS
I
Grounded.
34
UD-HOME
l
Up/down reference position signal.
35
DOOR
I
Door open signal.
36
SHUTTER
I
Shutter signal
37
LD-lNOUT
I
Loading in signal.
38
AVSS
---
GND
39
DLOCK
l
Disc lock signal.
40
DCNT
I
Disc count signal.
41
DCNT-HOME
l
Disc count home position
42
UD-UP
O
Up/down-motor down drive output.
H
43
UD-DOWN
O
Up/down-motor up drive output.
H
44
DSPSEL
l
DSP select signal.
45
FRONT
O
Loading-motor rear drive output.
H
46
REAR
O
Loading-motor front drive output.
47
VCC
---
+5V
48
NC
---
Not used.
49
NC
---
Not used.
50
NC
---
Not used.
(to be continued)
Summary of Contents for DVD-15
Page 14: ...14 MECHANICAL ASS Y AND PARTS LIST 4 2 Mechanism Ass y DVD 15 A01 Fig 4 2...
Page 17: ...17 MECHANICAL ASS Y AND PARTS LIST 4 4 Loading EX Ass y ADJ 3 B02 Fig 4 4...
Page 51: ...To Digital PCB P550 DVD 15 MECHANISM C3M1 SCHEMATIC DIAGRAM...
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