Pin No.
Pin Name
I/O
Description
39
KEY RTN1
1. Input detector port of A/D input key. Samples 256 steps with AVcc in the center and
confirms which key is pressed by the input voltage.
2. Key voltage table.
3. Excluding above item’s key sfter receiving, detecting and amplifying the remocon
Data from the remocon receiver (RCSF1), decodes input signals from
µ
-COM (pin
82), performs its key operation.
A/D Vcc.
1. Initially 5.3 VA is applied to Vcc pin 22 of
µ
-COM.
This pulses is applied to clear the RAM inside the
µ
-COM and to reset programs to
0000H in ROM.
2. Reset timing pulse.
Not connect
Now TUNING BAND is SECAM VHF-L. (to TUNER)
1. Output signal to IC502 for control of the loading motor’s direction of rotation.
2. Control table of loading motor’s driving direction.
Now input signal is CANAL/PREMIER. (from SCART 2)
No.
KEY NAME
A/D RANGE
1
SP/EP
0.0V ~ 0.45V
2
CH UP
0.46V ~ 0.96V
3
CH DOWN
0.97V ~ 1.47V
4
STOP/EJECT
1.48V ~ 1.97V
5
REC/ITR
1.99V ~ 2.48V
No.
KEY NAME
A/D RANGE
1
PAUSE
0.0V ~ 0.45V
2
FF
0.46V ~ 0.96V
3
REW
0.97V ~ 1.47V
4
PLAY
1.48V ~ 1.97V
5
POWER
1.99V ~ 2.48V
5.3VA
3.1V
1.5V
RESET
PULSE
RESET Period
Vcc
t
t
Pin 19
Pin 20
Rotation of Loading Motor
H
H
Brake Mode.
H
L
Reverse Direction.
L
H
Forward Direction.
I
–
I
–
O
O
I
KEY RTN 1
VCC(A/D)
RESET
LD (+)
C+DET “H”
14
15
16
20
21
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