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AUDIO
DUB
EJECT
PLAY
REC
Mode select
FF
button inputs
REW
PAUSE/STILL
STOP
LOADING
UNLOADING
REC CHIP
REMOTE PAUSE
CASSETTE HOUSING
LAMP FAILURE SENSOR
System control
inputs
END
SENSOR
START
SENSOR
DEW SENSOR
VOLTAGE
DROP SENSOR
SLACK SENSOR
DRUM
DET
EXCESS
LOADING SENSOR
Sensor inputs
* (VS
INPUT)
In short, the mechanism
control circuit, as seen from
the above
connection diagram, takes individual oper-
ator commands
and control information
at the TMS
1024, processes
those commands
and information
at
the microcomputer
TMS1100
in accordance
with pro-
grams
stored there,
and
delivers,
as single outputs,
13
OUTPUT
INPUT/
SELECT
SIGNAL
IN
INPUT
PORTS
PORTS
SELECT
OUTPUT
RESET
CONTROL
TMS1000/TMS1 100
REG 9V
Figure 11.
drive
commands
most
suitable
for
the
motors
and
solenoids
in proper
combinations
at the TMS1025,
thereby driving each motor or solenoid.
The input ports of each IC are high in potential when
all of them are supplied with signals.
Reference:
ICs and microcomputer used
A)
TMS 1100
SOLENOID
PULL
SOLENOID OUT
EJECT SOLENOID
PINCH ROLLER SOLENOID
REWIDLER
SOLENOID
TAKE-UP REEL BRAKE SOLENOID
SUPPLY REEL BRAKE SOLENOID
Solenoid drive outputs
34 D3 PLAY
DISPLAY
33 C3 DISPLAY
32 B3 FF DISPLAY
31 A3_REW DISPLAY
30 D7 AUDIO
DUB
DISPLAY
OUTPUT
29 C7 PAUSE
DISPLAY
PORTS
28
27 A7 STOP DISPLAY
26
25
B6 DRUM MOTOR
23
A6 CAPSTAN
MOTOR
22 D2 CAPSTAN CTL
i" C2 (Foward) LOADING MOTOR
(Reverse) LOADING
MOTOR
Motor drive outputs
I809TMS1025
REC
PLAY
MODE OUTPUT MECHAPLAY
Mode contro! outputs
MODE OUTPUT STILL
(VS OUTPUT)
B)
TMS1024/1025
One-chip microcomputer
(4-bit P-channel MOS
microcomputer
in which ROM.
RAM
and
calculating
circuit
are placed
on a single
semiconductor chip)
° Number of pins of package:
28
°Command
ROM:
2048 x 8 bits (16384 bits)
° Data RAM:
128 x 4 bits (512 bits)
°R outputs:
11
°O outputs:
8
14
MOS
ICs;
these ICs are used in conjunction with the
TMS1100
and serve to upgrade its inputs and outputs.
°'TMS1024:
28 pins, 16 input/output ports
°TMS1025:
40 pins, 28 input/outports
(These ICs allow to change over the polarity of the MS
terminal
and serve
either the upgrading of inputs or
the upgrading of outputs depending upon the selected
polarity.)
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