63
HCD-GNZ333D/GNZ444D
• IC Pin Descriptions
IC401
µ
PD78F1164GF(S)-301-GAS-AX (SYSTEM CONTROL) (MAIN BOARD (3/3))
Pin No.
Pin Name
I/O
Pin Description
1 to 9
NC
—
Not used
10
I-AC-CUT
I
AC off detection signal input
11, 12
NC
—
Not used
13
O-3CD-M1+
O
MTK M1 motor control signal output
14
O-3CD-M1–
O
MTK M1 motor control signal output
15
O-3CD-M2+
O
MTK M2 motor control signal output
16
O-3CD-M2–
O
MTK M2 motor control signal output
17
I-3CD-SW3
I
Disc tray status detection signal input from MTK
18
I-3CD-SW1
I
Disc tray status detection signal input from MTK
19
I-3CD-CHACK
I
Disc tray chack detection signal input from MTK
20
EVSS1
—
Ground
21
I-3CD-SW2
I
Disc tray status detection signal input from MTK
22
I-3CD-CLOSE
I
Disc tray close detection signal input from MTK
23
I-3CD-STOCK
I
Disc stock detection signal input from MTK
24
I-3CD-OPEN
I
Disc tray open detection signal input from MTK
25
O-FAN
O
Fan control signal output Not used.
26
I-TU-DI
I
Tuner serial data input
27
O-TU-CLK
O
Tuner serial clock signal output
28
O-TU-DO
O
Tuner serial data output
29
O-TU-CE
O
Tuner chip enable signal output
30
EVDD1
—
Power supply (+3.3V)
31
I-SD
I
Tuner tuned data input
32
O-AMP-ON
O
Speaker relay control signal output
33
O-REC-MUTE
O
Recording muting control signal output
34
O-REC-CONTROL-A
O
Recording select signal output
35
O-REC-CONTROL-B
O
Recording select signal output
36
O-VOL-DATA
O
Serial data output to input selection and volume control IC
37
O-VOL-CLK
O
Serial clock output to input selection and volume control IC
38
O-BASSBOOST-ON
O
Bass Boost on/off signal output
39
I-DVD-KRMOD
I
Karaoke mode detection signal input from MTK
40
O-MTK-MICREQ
O
Microphone status signal output
O
RS232 TXD signal output to MTK
O
Master system reset signal output
I
XIFCS signal input from MTK
O
Serial data signal output to MTK
I
Serial data signal input from MTK
I
Serial clock signal input from MTK
—
A/D Converter reference voltage input (+3.3 V)
—
Not used
I
A/D Converter reference voltage input (+3.3 V)
51
AVSS
—
Ground
52
I-POWER-MONITOR
I
Power supply monitor signal input
53
I-MODEL
I
Model setting input
54
I-SUFFIX
I
Suffix setting input
55 to 57
NC
—
Not used
58
I-TP-STATE
I
Tape status signal input
59 to 64
NC
—
Not used
65
I-KEY3
I
Key signal input (A/D input)
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