21
IC DESCRIPTION
IC, UPD780226GF-024-3BA
Pin No.
Pin Name
I/O
Description
1
SOL1
O
DECK1 solenoid output.
2
SOL2
O
DECK2 solenoid output.
3
O-MOTOR
O
DECK MOTOR ON/OFF output.
4
O-PB2
O
DECK2/DECK1 play output.
5
O-BIAS
O
BIAS ON output.
6
O-RMT
O
REC mute output.
7
O-CD.ON (VCD)
O
CD ON output. (Not used)
8
O-TU.ON
O
TUNER ON output.
9
NC
-
Not connected.
10
O-STBY.LED
O
STANDBY LED ON/OFF output.
11
O-CLK SFT
O
Micon clock shift output.
12 ~ 16
NC
-
Not connected.
17
IC (VPP)
-
Internal connection. (Connected to GND)
18
VSS0
-
GND.
19
VDD0
-
Power supply.
20
I-VOL A
I
Volume rotary encoder input A.
21
I-VOL B
I
Volume rotary encoder input B.
22
O-POWER
O
System power supply ON/OFF output.
23
I-CD ACK (VCD)
I
CD IC acknowledge input.
24
CD.CE/O-CD DATA
(VCD)
O
CD enable output / CD data output.
25
I-TUNE/IFC
I
Tuner SD detection input / Tuner IF count input.
26
I-RDS.DATA/
I/O
Tuner RDS data input (Connected to GND through a resistor) /
O-STB.ECHO (VCD)
Strobe output for shift register.
27
I-WRQ/I-CD DATA
I
CD WRQ input / CD data input.
(VCD)
28
I-RDS.CLK/
I/O
Tuner RDS clock input / DSP data output. (Connected to GND through a resistor)
O-DSP.DATA
29
I-SUB.Q/
O-S CLK.STB (VCD)
I/O
SUB Q data input / CD serial clock strobe output.
30
RESET
-
System reset.
31
O-DSC DATA
O
Function IC control output.
32
I-STEREO
I
Tuner stereo input.
33
I-DRF/
O-S DATA (VCD)
I/O
CD DRF input / CD serial data output.
34
I-RMC
I
System remote control input.
35
I-TM.BASE
I
Base input for clock.
36
I-DISH
I
CD turntable photo sensor A/D input.
37
VDD1
-
Power supply.
38
X2
-
4.19 MHz oscillator circuit.
39
X1
-
4.19 MHz oscillator circuit.
40
VSS1
-
GND.
Summary of Contents for NSX-VC220
Page 12: ... 12 SCHEMATIC DIAGRAM 1 MAIN 1 2 ...
Page 13: ... 13 SCHEMATIC DIAGRAM 2 FRONT DECK ...
Page 14: ... 14 SCHEMATIC DIAGRAM 3 TUNER ...
Page 15: ... 15 SCHEMATIC DIAGRAM 4 MAIN 2 2 PT SECTION ...
Page 17: ... 17 SCHEMATIC DIAGRAM 5 AMP ...
Page 19: ... 19 IC BLOCK DIAGRAM ...
