ZS-PS20CP
37
MAIN BOARD (2/3) IC801 LC87F7DC8AU-QIP-E (SYSTEM CONTROL)
Pin No.
Pin Name
I/O
Description
1
NC
—
Not used (Open)
2
M-MUTE
O
Motor driver mute signal output
3
O-CD DO
O
CD DSP serial data output
4
I-CD DI
I
CD DSP serial data input
5
O-CD CLK
O
CD DSP serial transfer clock signal output
6
O-VOL-DATA
O
Volume command serial data output
7
NC
—
Not used (Open)
8
O-VOL-CLK
O
Volume command serial transfer clock output
9
EPROM-SCK
O
EEPROM transfer clock output
10
EPROM-SDA
I/O
EEPROM serial data input/output
11
I-RES
I
Reset signal input
12
XT1
I
Clock oscillation input (32.768kHz)
13
XT2
O
Clock oscillation output (32.768kHz)
14
VSS1
—
Ground
15
CF1
I
Main system clock oscillation input (10 MHz)
16
CF2
O
Main system clock oscillation output (10 MHz)
17
VDD1
—
Power supply (+3.3 V)
18
O-CLOCK-SHIFT1
O
Clock shift switch signal output
19
O-CLOCK-SHIFT2
O
Clock shift switch signal output
20
NC
—
Not used (Open)
21
NC
—
Not used (Open)
22
I-REG3.3V-CHK
I
Power 3.3V check signal input
23
I-REG6.0V-CHK
I
Power 6V check signal input
24
I-REG9.0V-CHK
I
Power 9V check signal input
25
I-KEY1
I
Key input
26
I-KET2
I
Key input
27
I-KEY3
I
Key input
28
I-WAKE-UP
I
Key wake-up signal input
29
I-RMC
I
Remote commander receiver data input
30
I-SUFFIX 1
I
Suf
fi
x distinction input
31
I-SUFFIX 2
I
Suf
fi
x distinction input
32
I-SUFFIX 3
I
Suf
fi
x distinction input
33
NC
—
Not used (Open)
34
O-BASS
O
MEGA BASS control signal output (Not used in this set)
35
O-A MUTE
O
Power AMP mute signal output
36
O-POWER
O
Main power control signal output
37
O-CD-ON
O
CD power control signal output (Not used in this set)
38
O-5V-ON
O
VBUS+5V power control signal output
39
O-TU-ON
O
Tuner power control signal output (Not used in this set)
40
O-TU-CLK
O
Tuner PLL clock signal output
41
O-TU-DATA
O
Tuner PLL data output
42
O-TU-CE
O
Tuner PLL chip enable signal output
43
NC
—
Not used (Open)
44
I-TU COUNT
I
Tuner PLL IF count signal input
45
I-CD LID
I
CD door open/close switch signal input “L: Close”
46 to 48
NC
—
Not used (Open)
49 to 53
O-SEG29 to SEG25
O
LCD drive segment signal output
54
VDD2
—
Power supply (+3.3 V)
55
VSS2
—
Ground
56 to 79
O-SEG24 to SEG1
O
LCD drive segment signal output
80
LCD BIAS V3
—
LCD bias voltage setting terminal
81
LCD BIAS V2
—
LCD bias voltage setting terminal
82
LCD BIAS V1
—
LCD bias voltage setting terminal
83 to 86
O-COM1 to COM4
O
LCD drive common signal output
87
NC
—
Not used (Open)
Summary of Contents for ZS-PS20CP
Page 53: ...MEMO ZS PS20CP 53 ...
