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7-34. IC PIN FUNCTION DESCRIPTION
• MAIN BOARD IC501 µPD780018AYGF-011-3BA (SYSTEM CONTROLLER)
Pin No. Pin Name I/O Function
1 LINE-MUTE O
Line muting on/off control signal output terminal “L”: muting on
2 DBFB-H/L O
DBFB normal/high selection signal output to the M62442FP (IC101)
“L”: DBFB high, “H”: DBFB low
3
M62442-LATCH
O
Serial data latch pulse output to the M62442FP (IC101)
4
KEYCON-LATCH
O
Serial data latch pulse output terminal Not used (open)
5 POWER O
Power on/off control signal output for the audio system (+5V) and deck, panel, audio system
(+7V) “L”: power on, “H”: standby
6 F-RELAY O
Relay drive signal output for the speaker protect “H”: on
7 R-RELAY O
Relay drive signal output for the speaker protect “H”: on Not used (open)
8 PL-RELAY O
Relay drive signal output for the speaker protect “H”: on Not used (open)
9 VPP —
Ground terminal
10 X2 O
Main system clock output terminal (5 MHz)
11 X1 I
Main system clock input terminal (5 MHz)
12 VDD —
Power supply terminal (+5V)
13 XT2 O
Sub system clock output terminal (32.768 kHz)
14 XT1 I
Sub system clock input terminal (32.768 kHz)
15 RESET I
System reset signal input from the reset signal generator (IC502) “L”: reset
For several hundreds msec. after the power supply rises, “L” is input, then it changes to “H”
16 AC-CUT I
AC off detection signal input from the reset signal generator (IC502)
17 CAPM-CNT1P O
Capstan motor (M1) drive signal output terminal
18 SCOR I
Subcode sync (S0+S1) detection signal input from the CXD2519Q (IC103)
19 SOFT-TEST O
Output terminal for the software test (open)
20 NCO O
Not used (open)
21 RDS-INT I
Serial data reading clock signal input from the RDS decoder (IC1752) Used for the AEP, UK,
German models (Except AEP, UK, German models: not used (fixed at “L”))
22 RDS-DATA I
Serial data input from the RDS decoder (IC1752) Used for the AEP, UK, German models
(Except AEP, UK, German models: not used (fixed at “L”))
23 AVDD —
Power supply terminal (+5V) (for A/D conversion)
24 AVREF I
Reference voltage (+5V) input terminal (for A/D conversion)
25 ADJ I
Setting terminal for the CD test mode Normally: fixed at “H”
26 A-SHUT I
Shut off detection signal input from the deck-A side reel pulse detector (IC1001)
27 B-SHUT I
Shut off detection signal input from the deck-B side reel pulse detector (IC1002)
28 B-HALF I
Detection input from the deck-B half detect switch (S1006)
29 CLK-CHECK I
Not used (fixed at “L”)
30 SPEC-IN I
Setting terminal for the version
31 AMS-IN I
Automatic music sensor detection signal input from the HA12215F (IC301)
32
DEMO-CHANGE
I
Setting terminal for the demonstration H/L Fixed at “L”
33 AVSS —
Ground terminal (for A/D conversion)
34 SQ-DATA-IN I
Sub-code Q data input from the CXD2519Q (IC103)
35 NCO O
Not used (open)
36
SQ-CLK
(D-OUT ON/OFF)
O
Sub-code Q data reading clock signal output to the CXD2519Q (IC103)
37
SUPERWOOFER-
ON/OFF
O
Super woofer speaker on/off control signal output terminal Not used (open)
38
SUPERWOOFER
MODE
O
Super woofer speaker mode control signal output terminal Not used (open)
39 NIL I
Not used (fixed at “L”)
40 VSS —
Ground terminal
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