– 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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