– 27 –
IC DESCRIPTION
IC,
µ
PD780228
1
O-MOTOR
O
DECK MOTOR ON/OFF output.
2
O-SOL1
O
DECK1 solenoid ON/OFF output.
3
O-SOL2
O
DECK2 solenoid ON/OFF output.
4
O-STBY
O
STANDBY LED (Echo mode) output (ON/OFF).
5 ~ 10
NC
–
Not connected.
11
O-TU_ON
O
TUNER ON/OFF switch output. (Not used)
12
O-MUTE
O
System MUTE ON/OFF output.
13
O-KSCAN
O
Switch SCAN timing output.
14
I-HP-MUTE
I
Headphone mute input.
15
STB(M)
O
MAIN PWB strobe output.
16
NC
–
Not connected.
17
IC
–
Internal connection (connected to GND).
18
VSSO
–
GND.
19
VDDO
–
Power supply.
20
O-POWER
O
System power supply ON/OFF output.
21
NC
–
Not connected.
22
NC
–
Not connected.
23
NC
–
Not connected.
24
I-SUBQ
I
CD SUBQ data input.
25
I-WRQ
I
CD interrupt signal input.
26
I-DRF
I
CD focus ON detect data input.
27
I-REA
I
DECK2 side A record OK switch data input.
28
I-RDS_CLK
I
Tuner RDS clock input. (Not used)
29
I-RDS_DATA
I
Tuner RDS data input. (Not used)
30
RESET
–
System reset input (ON/OFF).
31
O-DSC/O-DATA
O
Function IC / Tuner IC, data output.
32
O-CLK_SFT
O
MICON clock shift output.
33
I-IFC
I
Tune IF count serial data input.
34
I-RMC
I
System remote control signal input.
I
CD turntable photo sensor input A/D converter input.
I
Tuner STEREO detect input.
–
Power supply.
–
4.19MHz oscillator circuit.
–
4.19MHz oscillator circuit.
–
GND.
–
Power supply.
42
I-HOLD
I
Power failure detected input.
43
I-CDSW
I
CD mecha switch A/D converter input.
44
I-SPEANA_1
I
A/D input for spectrum analyser level display.
45
I-SPEANA_2
I
A/D input for spectrum analyser level display.
46
I-KEY1
I
Key A/D input 1.
47
I-KEY2
I
Key A/D input 2.
48
I-SPEANA_3
I
A/D input for spectrum analyser level display.
Pin Name
I/O
Description
Pin No.
www. xiaoyu163. com
QQ 376315150
9
9
2
8
9
4
2
9
8
TEL 13942296513
9
9
2
8
9
4
2
9
8
0
5
1
5
1
3
6
7
3
Q
Q
TEL 13942296513 QQ 376315150 892498299
TEL 13942296513 QQ 376315150 892498299
