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IC DESCRIPTION (MX-NH2000)
Description
Pin No.
Pin Name
I/O
IC, UPD780228GF-065-3BA
1
K-SCAN
O
Key scan output.
2
RHYTHM-CS
O
Chip select output to IC, BU9990-03FS.
3
RHYTHM-SCLK
O
Clock output to IC, BU9990-03FS.
4
RHYTHM-SD
O
Data output to IC, BU9990-03FS.
5
PLL CE
O
PLL IC chip enable output.
6
O-M/CLK
O
Main clock output.
7
O-M/DATA
O
Main data output.
8
O-M/STB
O
Main strobe output.
9
I/O-SERIAL
I/O
Communication port for GEQ, CD and DECK.
10
O-MUTE
O
System mute (ON when "H").
11
O-POWER
O
System power supply (ON when "L").
12
DIMER 2
O
Dimmer control ("L" when 2).
13
O-MUTE S
O
Sound L, R, Center, SW Mute.
14
LED-ECO
O
ECO LED output.
15
NC
–
Not connected.
16
NC
–
Not connected.
17
IC
–
Connect to GND.
18
VSS
–
GND.
19
VDD
–
Power supply terminal.
20
LED-MD
O
MD LED output.
21
TM-BASE
I
Time base input.
22
TUNE/IFO
I
Tuning detection input.
23
STEREO
I
Stereo detection input.
24
NC
–
Not connected.
25
I-RE VOL A
I
Rotary Encoder Input A / B.
26
I-RE VOL B
27
LED-CD
O
CD LED output.
28
NC
–
Not connected.
I
TUNER RDS IC clock input. (Not used.)
I
Reset input.
I
Tuner RDS input. (Not used.)
Latch output to IC, M62449FP.
I
Tape counter input.
I
Remote controller input (Active "L").
I
Stop surround function when using head phone.
36
O-SHIFT
O
Output for oscillated frequency shift.
37
VDD
–
Power supply terminal.
38
X2
–
4.19MHz oscillator circuit.
39
X1
40
VSS
–
GND.
41
AVDD
–
Power supply terminal.
42
HOLD
I
Power failure / over current detected input.
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