Ic Pin Function Description - Sony HCD-GRX9000 Service Manual

7-33. IC PIN FUNCTION DESCRIPTION

• MAIN BOARD IC501 µPD780018AYGF-012-3BA (SYSTEM CONTROLLER)
Pin No. Pin Name
1 LINE-MUTE
2 DBFB-H/L
3
M62442-LATCH
4 KEYCON-LATCH
5 POWER
6 F-RELAY
7 R-RELAY
8 PL-RELAY
9 VPP
10 X2
11 X1
12 VDD
13 XT2
14 XT1
15 RESET
16 AC-CUT
17 CAPM-CNT1P
18 SCOR
19 SOFT-TEST
20 NCO
21 RDS-INT
22 RDS-DATA
23 AVDD
24 AVREF
25 ADJ
26 A-SHUT
27 B-SHUT
28 B-HALF
29 CLK-CHECK
30 SPEC-IN
31 AMS-IN
32
DEMO-CHANGE
33 AVSS
34 SQ-DATA-IN
35 NCO
SQ-CLK
36
(D-OUT ON/OFF)
SUPERWOOFER-
37
ON/OFF
SUPERWOOFER
38
MODE
39 NIL
40 VSS
41 DELAY-CONT
42 PL-LATCH
I/O
O
Line muting on/off control signal output terminal "L": muting on
DBFB normal/high selection signal output to the M62442FP (IC101)
O
"L": DBFB high, "H": DBFB low
O
Serial data latch pulse output to the M62442FP (IC101)
O Serial data latch pulse output terminal Not used (open)
Power on/off control signal output for the audio system (+5V) and deck, panel, audio system
O
(+7V) "L": power on, "H": standby
O Relay drive signal output for the speaker protect "H": on
O
Relay drive signal output for the speaker protect "H": on Not used (open)
O
Relay drive signal output for the speaker protect "H": on Not used (open)
—
Ground terminal
O
Main system clock output terminal (5 MHz)
I
Main system clock input terminal (5 MHz)
—
Power supply terminal (+5V)
O Sub system clock output terminal (32.768 kHz)
I
Sub system clock input terminal (32.768 kHz)
System reset signal input from the reset signal generator (IC502) "L": reset
I
For several hundreds msec. after the power supply rises, "L" is input, then it changes to "H"
I
AC off detection signal input from the reset signal generator (IC502)
O
Capstan motor (M1) drive signal output terminal
I Subcode sync (S0+S1) detection signal input from the CXD2519Q (IC103)
O
Output terminal for the software test (open)
O
Not used (open)
I
Serial data reading clock signal input terminal Not used (fixed at "L")
I Serial data input terminal Not used (fixed at "L")
—
Power supply terminal (+5V) (for A/D conversion)
I
Reference voltage (+5V) input terminal (for A/D conversion)
I
Setting terminal for the CD test mode Normally: fixed at "H"
I
Shut off detection signal input from the deck-A side reel pulse detector (IC1001)
I
Shut off detection signal input from the deck-B side reel pulse detector (IC1002)
I
Detection input from the deck-B half detect switch (S1006)
I Not used (fixed at "L")
I
Setting terminal for the version
I
Automatic music sensor detection signal input from the HA12215F (IC301)
I
Setting terminal for the demonstration H/L Fixed at "L"
—
Ground terminal (for A/D conversion)
I
Sub-code Q data input from the CXD2519Q (IC103)
O
Not used (open)
O
Sub-code Q data reading clock signal output to the CXD2519Q (IC103)
O
Super woofer speaker on/off control signal output terminal Not used (open)
O
Super woofer speaker mode control signal output terminal Not used (open)
I
Not used (fixed at "L")
—
Ground terminal
O
Serial data latch pulse output terminal Not used (open)
O
Serial data latch pulse output terminal Not used (open)
Function
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