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HCD-GZR5D
72
• IC Pin Function Description
MAIN BOARD IC401
μ
PD78F1106GF(S) -GAS- AX (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Description
1
ECHO-G1
O
ECHO gain control signal output
2
ECHO-G2
O
ECHO gain control signal output
3, 4
NC
–
Not used. (Open)
5
NC
–
Not used. (Connect to ground.)
6
NC
–
Not used. (Open)
7
O-EEP-SCL
O
Backup EEPROM serial clock signal output
8
O-EEP-SDA
O
Backup EEPROM serial data signal output
9
NC
–
Not used. (Open)
10
I-AC-CUT
I
AC of detection signal input
11
O-LED-RED
O
USB LED (red) drive signal output
12
O-LED-BLUE
O
USB LED (blue) drive signal output
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 status detection signal input from MTK
20
EVSS1
–
Ground pin
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
26
I-TU-DI
I
Tuner serial data signal input
27
O-TU-CLK
O
Tuner serial clock signal output
28
O-TU-DO
O
Tuner serial data signal output
29
O-TU-CE
O
Tuner chip enable signal output
30
EVDD1
–
Power supply pin (+3.3 V)
31
I-SD
I
Tuner tuned data signal 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 A
35
O-REC-CONTROL-B
O
Recording select signal output B
36
O-VOL-DATA
O
Serial data signal output to input selection and volume contorol IC
37
O-VOL-CLK
O
Serial clock signal output to input selection and volume contorol IC
38
O-BASS BOOST-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
41
O-MTK-IFBSY
O
RS232 TXD signal output to MTK
42
O-MTK-MTRST
O
Master system reset signal output
43
I-DVD-XIFCS
I
XIFCS signal input from MTK
44
O-MTK-DATA
O
Serial data signal output to MTK
45
I-MTK-DATA
I
Serial data signal input from MTK
46
I-MTK-CLK
I
Serial clock signal input from MTK
47
AVREF1
I
A/D converter reference voltage input (+3.3 V)
48, 49
NC
–
Not used. (Open)
50
AVREF0
I
A/D converter reference voltage input (+3.3 V)
51
AVSS
–
Ground pin
52
I-POWER-MONITOR
I
Power suppy monitor signal input
53
I-MODEL
I
Model setting input
54
I-SUFFIX
I
Suf
fi
x setting input
55, 56
NC
–
Not used. (Connect to ground.)
Summary of Contents for CDM74HF-DVBU101
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