– 93 –
Pin No.
Pin Name
I/O
Function
• IC501 MASTER CONTROL (uPD780018AYGF-011-3BA)
1
LINE-MUTE
O
Line mute signal output
2
DBFB-H/L
O
DBFB H/L select signal output
3
M62442-LAT
O
Latch signal output for IC111 (M62442FP)
4
KCON-LAT
O
Not used
5
POWER
O
Power ON/OFF signal output
6
F-RELAY
O
Front speaker relay control output (Not used)
7
R-RELAY
O
Rear speaker relay control output
8
PL-RELAY
O
Not used
9
VSS
–
Ground
10
X2
O
X’tal (5MHz)
11
X1
I
12
VDD
–
Power supply (+5V)
13
XT2
O
X’tal (32.768 KHz)
14
XT1
I
15
RESET
I
Reset signal input
16
(AC-CUT)
I
Back up signal input
17
CAPM-CNT1P
I
Capstan motor control 1 (+) signal output
18
SCOR
O
Subcode data request signal output
19
SOFT-TEST
O
Software test port
20
—
–
Not used
21
RDS-INT
I
RDS data interrupt input
22
RDS-DATA
I
RDS data interrupt input
23
AVDD
–
Power supply (+5V)
24
AVREF
I
Analog reference voltage input.
25
ADJ
I
CD adjust point port
Normal “H”
26
A-SHUT
I
A Deck reel pulse detector
27
B-SHUT
I
B Deck reel pulse detector
28
B-HALF
I
Half detector signal input
29
CLK-CHECK
I
Connected to ground
30
SPEC-IN
I
Version select signal input
31
AMS-IN
I
Connected to ground
32
DEMO-CHANGE
I
DEMO H/L select signal input
(Connected to ground)
33
AVSS
–
Ground
34
SQ-DATA-IN
I
Subcode Q data clock input
35
—
–
Not used
36
SQ-CLK
I
Sub code Q data clock input
37
SUR-ON/OFF
O
Not used
38
FB CONT-A
I
Not used
39
FB CONT-B
I
Connected to ground
40
VSS
–
Ground
41
PL-VOL
O
Latch signal output to erectrial volume (Not used)
42
PL-LAT
O
Latch signal input to pro-logic (Not used)
43
COM-DIN
I
Connected to ground
44
COM-DOUT
O
Common serial data output (Not used)
• Abbreviation
APC : Auto Power Control
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