55
Pin No.
Pin Name
I/O
Function
42, 43
BUS
O
Not used (open)
44
BUS XRD
O
Bus read signal output.
45
BUS
O
Not used.
46
BUS XWR
O
Bus write signal output.
47
8830-CS
O
Chip select signal output. (IC505)
48
AUDIO MUTE
O
Audio muting on/off control signal output terminal “L”: muting on Not used (open)
49
LOAD OUT
O
Loading motor drive signal output terminal Not used (open)
50
LOAD IN
O
Loading motor drive signal output terminal Not used (open)
51
INSW
I
Disc detection (load in) switch input terminal Not used (fixed at “H”)
52
OUTSW
I
Disc detection (load out) switch input terminal Not used (fixed at “H”)
53
MODEL1
I
Destination setting terminal (fixed at “L”)
54
MODEL2
I
Destination setting terminal (fixed at “L”)
55 to 61
A15 to A9
O
Address signal output for the external device. Not used
62
VCC
—
Power supply terminal (+5 V)
63
A8
O
Address signal output for the external device. Not used (open)
64
VSS
—
Ground terminal
65 to 72
A7 to A0
O
Address signal output for the external device.
73
TEST LED
O
LED drive signal output for the self diagnosis indicator (D502) Normally: “L” (LED on)
74
TEST1
I
Setting terminal for the test mode 1 (for VCD check)
Normally: fixed at “H” (“L”: test mode)
75
TEST2
I
Setting terminal for the test mode 2 (for SERVO check)
Normally: fixed at “H” (“L”: test mode)
76
TEST3
I
Setting terminal for the test mode 3 Normally: fixed at “H” (“L”: test mode)
Not used (fixed at “H”)
77
DEVICE RESET
O
System reset signal output to the CXD3008Q (IC101), BA5974FP (IC102) and D/A
converter (IC509) “L”: reset
78
STANDBY
O
Standby on/off control signal output terminal Not used (open)
79
FL CS
O
Chip select signal output terminal Not used (open)
80
FLBLK
O
Blank control signal output terminal Not used (open)
81 to 88
D7 to D0
I/O
Two-way data bus with the external device Not used (open)
89
NC
—
Not used.
90 to 92
KEY1 to KEY3
I
Key input terminal Not used (fixed at “H”)
93
NT/PAL
I
Video system select switch (S501) input terminal
“L”: PAL, “H”: NTSC, Center voltage: AUTO
94, 95
NC
—
Not used.
96
AVSS
—
Ground terminal (for A/D conversion)
97
NC
—
Not used.
98
VREF
I
Reference voltage (+5 V) input terminal (for A/D conversion)
99
AVCC
—
Power supply terminal (+5 V) (for A/D conversion)
100
NC
—
Not used.
