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IC DESCRIPTION
IC, UPD780226GF-022-3BA
Pin No.
Pin Name
1
SOL1
2
SOL2
3
O-MOTOR
4
O-PB2
5
O-BIAS
6
O-RMT
7
O-CD. ON
8
O-TU. ON
9
NC
10
O-STBY. LED
11
CLK SFT
12 ~ 16
NC
17
IC
18
VSS0
19
VDD0
20
I-VOL A
21
I-VOL B
22
O-POWER
23
O-DISH-R
24
CD. CE/O-CD DATA
25
I-TUNE/IFC
I-RDS. DATA
26
/O-STB. ECHO
27
I-WRQ
28
I-RDS. CLK
29
I-SUB. Q
30
RESET
31
O-DSC DATA
32
I-STEREO
33
I-DRF
34
I-RMC
35
I-TM. BASE
36
I-DISH
37
VDD1
38
X2
39
X1
40
VSS1
41
AVDD
42
I-HOLD
43
I-CD SW
44
I-SPEANA1
I/O
O
DECK1 solenoid output.
O
DECK2 solenoid output.
O
DECK MOTOR ON/OFF output.
O
DECK2/DECK1 play output.
O
BIAS ON output.
O
REC mute output.
O
CD ON output.
O
TUNER ON output.
-
Not connected.
O
STANDBY LED ON/OFF output.
O
Micon clock shift output.
-
Not connected.
-
Internal connection. (connected to GND)
-
GND.
-
Power supply.
I
Volume rotary encoder input A.
I
Volume rotary encoder input B.
O
System power supply ON/OFF output.
O
CD turntable reverse rotation output. (Connected to GND through a resistor)
O
CD enable output / CD data output.
I
Tuner SD detection input / Tuner IF count input.
Tuner RDS data input. (Not used)
I/O
/ Strobe output for shift register.
I
CD WRQ input.
I
Tuner RDS clock input. (Not used)
I
SUB Q data input.
-
System reset.
O
Function IC control output.
I
Tuner stereo input.
I
CD DRF input.
I
System remote control input.
I
Base input for clock.
I
CD turntable photo sensor A/D input.
-
Power supply.
-
4.19 MHz oscillator circuit.
-
4.19 MHz oscillator circuit.
-
GND.
-
Power supply.
I
Power failure detected input.
I
CD mecha switch input.
I
A/D 1 input for spectrum analyser level display.
– 28 –
Description
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