Table of Contents
Advertisement
Pin No.
Pin Name
14
KEY RTN 1
15
VCC(A/D)
16
RESET
17
CTL GAIN ADJ
18
JUST CLOCK IN
19
LD (–)
20
LD (+)
21
HSR "H" (24V)
22
Vcc(SYS)
I/O
No.
KEY NAME
1
SP/EP
2
CH UP
3
CH DOWN
4
STOP/EJECT
5
REC/ITR
KEY RTN1
No.
KEY NAME
1
PAUSE
I
2
FF
3
REW
4
PLAY
5
POWER
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 (RC5F1), 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.
I
Vcc
5.3VA
3.1V
1.5V
RESET
PULSE
RESET Period
O
Output "H" port to CTL gain control in FF/REW mode.
I
Input signal for automatic clock setting
1. Output signal to IC502 for control of the loading motor's direction of rotation.
2. Control table of loading motor's driving direction.
Pin 19
Pin20
O
H
H
L
O
Switches capstan Vcc to 24 V for high speed rewind.
–
SYSCON Vcc.
32
Description
A/D RANGE
0.0V ~ 0.45V
0.46V ~ 0.96V
0.97V ~ 1.47V
1.48V ~ 1.97V
1.99V ~ 2.48V
A/D RANGE
0.0V ~ 0.45V
0.46V ~ 0.96V
0.97V ~ 1.47V
1.48V ~ 1.97V
1.99V ~ 2.48V
t
t
Rotation of Loading Motor
H
Brake Mode.
L
Reverse Direction.
H
Forward Direction.
Advertisement
Table of Contents
