– 33 –
Description
Pin No.
Pin Name
I/O
IC DESCRIPTION (DX-NH2000)
IC, UPD78044HGF
1
NC
–
Not connected.
2~7
G6~G1
O
FL grid output G6~G1.
8
VDD
–
Power supply terminal.
9
O-DISH R
O
CD turntable reverse rotation output.
10
O-DISH F
O
CD turntable forward rotation output.
11
NC
–
Connected to pull-down resistor
12
I/O BUSY
I/O
DSP serial latch output.
13
I-SQCLK
I
DSP SUB Q read-out clock output.
14
O-CLK
O
CD clock output.
15
O-DATA
O
CD data output.
16
I-SQDATA
I
DSP serial data input.
17
RESET
I
Reset input.
18
O-OPEN
O
CD tray open output.
19
O-CLOSE
O
CD tray close output.
20
A VSS
–
GND.
21
I-WRQ
I
CD WRQ input.
22
I-SW
I
CD motor key switch A/D input.
23
I-DISH S
I
CD turntable photo sensor A/D input.
24
B-SKIP
I
BLANK SKIP A/D input.
25
I-KEY1
I
Key1 A/D input.
26
I-KEY2
I
Key2 A/D input.
27
NC
–
Not connected.
28
NC
–
Not connected.
29
A VDD
–
Power supply terminal.
30
A VREF
–
Power supply terminal.
31
XT1
–
Connect to GND.
32
XT2
–
Connect to GND.
33
VSS
–
GND.
–
4.19MHz oscillator circuit.
Micro controller clock shift output. (Shift when "L").
Power supply output for CD circuit ("H": ON).
Play LED output.
Pause LED output.
–
Not connected.
41
O-MUTE
O
CD Audio mute output.
42
NC
–
Connected to pull-down resistor.
43
I/O-SERIAL
I/O
Serial data input / output.
44~46
NC
–
Connected to pull-down resistor.
47,48
IC
–
Connect to GND.
49
LED4
O
Disc1 LED output.
50
LED5
O
Disc2 LED output.
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