– 33 –
IC DESCRIPTION
IC,
µ
PD780228GF-089-3BA
Pin Name
I/O
Description
Pin No.
1
O-MOTOR
O
DECK motor output.
2
O-SOL1
O
DECK1 solenoid output.
3
O-SOL2
O
DECK2 solenoid output.
4
O-STBY LED
O
Standby LED output. (Not used)
5
O-MUTE
O
System mute ON/OFF output.
6
O-KSCAN
O
Key scan timing output.
7
O-PLL_CE
O
PLL chip enable output for LC72131D-N.
8
I-TM_BASE
I
Time-base signal input.
9
O-TU-ON
O
Tuner ON/OFF output.
10
O-PB2
O
DECK2 play back ON/OFF output.
11
O-VF
–
Not used.
12
I-AUTO1
I
DECK1 detecting reel rotation switch input.
13
I-REA
I
DECK2 prevention for mistaken recording switch input.
14
I-CST1
I
DECK1 cassette detect switch input.
15
I-CST2
I
DECK2 cassette detect switch input.
16
I-AUTO2
I
DECK2 detecting reel rotation switch input.
17
IC
–
GND.
18
VSS0
–
GND.
19
VDD0
–
Power supply input.
20
O-POWER
O
System power supply ON/OFF output.
21
I-JOG_A
I
JOG rotary encoder signal input (A/D).
22
I-JOG_B
I
JOG rotary encoder signal input (A/D).
23
I-VOL_A
I
VOL rotary encoder signal input (A/D).
24
I-VOL_B
I
VOL rotary encoder signal input (A/D).
25
I-SUBQ
I
CD SUBQ serial input.
26
I-WRQ
I
CD IC control input.
27
I-DRF
I
CD IC control input.
28
I-RDS_CLK
I
Tuner RDS clock output for BU1920FS.
I
Tuner RDS data output for BU1920FS.
I
Reset input.
Serial data latch output for BD3881FV / PLL data output for LC72131D-N.
MICON clock shift output.
I
Tune IF count serial data input.
I
System remote control signal input.
I
CD turntable photo sensor signal input.
I
Tuner stereo detected input.
37
VDD1
–
Power supply input.
38
X2
–
4.19MHz oscillator circuit.
39
X1
–
4.19MHz oscillator circuit.
40
VSS
–
GND.
41
AVDD
–
GND.
42
I-HOLD
I
Power failure detected input "L" to stop clock and hold memory.
43
I-CDSW
I
CD mechanical switch A/D converter input.
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
