Technics Quartz ST-G7 User Manual

ST-G7
m@ FUNCTION OF TERMINAL (MPX IC301 ¢ AN7471S)
@ FUNCTION OF TERMINAL (MICRO COMPUTOR IC903 ¢ MN1554STD)
Pui: unetion Rin:No: | Function fue 1/0 Mark Description of terminal aba a Vie) Mark Description of terminal veto
1
Pilot
cancel
signal
‘‘output”’
13~16
Not
used
in
this
unit
:
:
zt
A
a ve 1 INPUT CE1 Power failure detection. De- — 35 | INPUT AD Analog digital converted
2
6.5V
17
VCO
stop
control
‘‘input
tected
with
input
at
“L”’.
signal
is
put
in
from
IC902
@
3
Pilot
cancel
signal
‘input’
18
VCO
auto/monaural
control
“input”
Power
*ON*
Power
OFF”
terminal
14.
1
4
Phase
compensation
of
PLL
circuit
‘input’
19
VCO
OSC
frequency
adjustment
“‘input’’
oY
36
|
INPUT
SD
This
input
terminal
detects
=
ae 7 } the reception of a auto tuned.
5
Standard
voltage
“‘input
20
Inner
standard
voltage
‘‘output’’
OV
2.5V
with
a
broadcast
received,
|
6
Composite
signal
‘‘input’’
21
Low
pass
filter
of
PLL
compensation
“input’’
23]
—
Mat
used
in
ihieunit
aa
ili
2
V
ut
receiving
a
ae
7
7
-
ae
7
'
roadcast.
7
Composite
signal
‘‘output
22,23
Low
pass
filter
of
PLL
circuit
‘‘output
4
INPUT
CE2
Power
failure
reset
detection
oy
*
8
Ground
24
19
kHz
monitor
and
stereo
indicator
drive
‘‘output’’
Detected
with
input
at
’L”.
—2.5V
9
Sampling
pulse
(L
ch)
‘‘output’’
25
Stereo/monaural
control
‘‘input’’
Power
“OFF”
Power
‘ON’
ae
ov
10V uto tuning
10 L-90° Sampling pulse (R ch) ‘output’ 26 Stereo signal detector low pass filter ‘’input’’
5V ; ; ;
11
Sampling
pulse
(R
ch)
‘“‘output’’
27,
28
Pilot
signal
cancel
low
pass
filter
‘input’
37
=
<7
Not
used
in
this
unit
<=
12
R-90°
Sampling
pulse
(R
ch)
“output”
5
|
INPUT
INT
Interrupt
request
signal
input
—
38
|OUTPUT|
KO9
Diode
matrix
key
scan
signal
(|
—_
terminal. Signal from control output
input
terminal
is
put
in.
De-
39
|OUTPUT
HBL
Hi-blend,
High
frequency
—_
tected with input at ““L”. cutting command output
ceceg (RE a (9) ee during weak input signal
125
aa
a
reception,
m@
FUNCTION
OF
TERMINAL
(PLL
CONTROLLER
IC902
¢
MN1291)
meer
tte
be
oH
P
625msec_SBOmsec eointes 40 — =S Not used in this unit —
6 j;OUTPUT SBT Signal output of transfer re- a 2
ference clock for LCD drive. 42 |
Pin
No.
1/0
Mark
Description
of
terminal
Waveforms
No.
pated
reference
clock
43
|OUTPUT|
DT
OUT|
Data
output
to
personal
com-
—
L
puter.
1
see
ian
Not
used
in
this
unit
ee
2usec
5V
44
|OUTPUT|
RF
ATT]
Gaincontrol
output
of
RF
=
2
OUTPUT
DAO1
Digital
—»
analog
conversion
signal
output
of
input
signal
terminal
39.
1)
iv
amplifier.
it
3~6
—
—_
Not
used
in
this
unit
—
45
—
—_
Not
used
in
this
unit
—
7
|
INPUT
AD13
Analog
—»digital
conversion
of
FM-RF
tuning
voltage
(auto
track)
input
signal.
2)
|
7
JOUTPUT
SBO
Reference
frequency
output.
cs
8
INPUT
AD12
Analog
—»digital
conversion
of
FM
station
tuning
voltage.
(3)
(Data
output)
@
63|
INPUT
|
OSC1
|
Connection
terminals
of
Sa
9
INPUT
AD11
Analog
—»digital
conversion
of
electric
field
strength
level
input.
(4)
|
8
output
SBI
541
INPUT
OSC2
ceramic
oscillator.
=
10,11 — a Not used in this unit ae. 9 | INPUT RST Microcomputer reset. Reset — Oscillating frequency is 2 MHz.
12
INPUT
Vret
Reference
voltage
input
of
digital
—»
analog
conversion
circuit.
(5
V)
—_
eS
a
coh
a
a
MOS
ey
ine
Uiayt
=
7m : : 10 JOUTPUT KOO Signal output for key scan 56
13
—_—
—
Not
used’in
this
unit
—
2
Q
®
57
—
Vss
Ground
terminal
—_
14
OUTPUT
ADO
Analog
—»
digital
conversion
output
of
data
of
input
terminals
7,
8
or
9.
6
7
KO?
58
|OUTPUT
A
FM/AM/REC
15
=
Vss
Ground
for
PLL
ei
18
|OUTPUT
cP
Pulse
waveform
output
for
>]
“selector
—_____
the
beginning
and
the
end
®
59
|
OUTPUT
B
[_
[em
|
am
[Rec
oe
16
—_
_
Not
used
in
this
unit
—
of
each
data.
45.2V
ae
7 7? — Bea [1 | Li fo]
17
INPUT
cP
Input
of
pulse
waveform
for
the
beginning
and
the
end
of
each
data
of
input
©
19
a
2
Not
used
in
this
unit
=
|
}
Oey
signal
terminal
39.
L
By
60
—
—
Not
used
in
this
unit
—
|
=
=e
Not
used
in
this
uni
JOUTP
IF
N
a“
18
;
;
x
in
this
ell
—
|
35
|
INPUT
VDD
Bower
sipply
terminal
as
61
TPUT
eae
neratiog:
select
19
OUTPUT
02
phase
comparison
output.
—
%6
—
—
Not
used
in
this
unit
—
output
"L”
(OV)
»FM
IF
20
—
—
Not
used
in
this
unit
os
7
band
is
super
narrow
:
7
“H'
(AV
F
21
OUTPUT
DET
PLL
lock
detection
output.
(7)
28
|OUTPUT
|
333
Hz
Reference
signal
output
®
Mande
As
Agia.
22 ~24 —_— — Not used in this unit a for record level check.
1 29 | INPUT | KIO. | Key input from external OF 2 = soiree SAA cca sal oe
25
OUTPUT
FO3
1
kHz
idea
ui
oe
drive
and
for
VCO
auto
adjustment
of
MPX
circuit.
C8)
2
2
key
matrix.
©
63
|OUTPUT!
MONO
Stereo/Monaural
switching
=
26
~
28
—_
~
Not
used
in
this
unit
=
32
KI3
signal.
(Monaural
-»5V,
29
INPUT
x1
Connecting
terminal
for
crystal
oscillator.
—_—
33
|
INPUT
VDD
Power
supply
terminal
=
siciee
Soe
[
30
INPUT
X2
The
crystal
connected
is
at
8.55
MHz
|
34
|
INPUT
ST
Stereo
detection.
Stereo
res,
64
|OUTPUT)
MUTE
Se
Ge
ee
ie
—
31,32
—_
—
Not
used
in
this
unit
ss
signal
with
input
at
“L”.
lock
failure.
When
CE
terminal
:
age
r
z
is
at
low
level,
the
output
to
33
|
OUTPUT
PSC
OUT
Terminal
to
put
out
frequency
dividing
ratio
changeover
signal
to
prescaler.
@
this
terminal
is
at
high
level.
34
—
—
Not
used
in
this
unit
—
|
“mono”
“stereo”
35
—_—
Vss
Ground
2eN
1.5sec
36
INPUT
FM
IN
FM
station
(VCO)
input,
frequency-divided
to
1/32
and
1/33
by
prescaler.
—
a
Power
“ON”
—Be
37 INPUT AM IN AM OSC input — Power *OFF”
$-—
38 INPUT VDD Power supply terminal (5 V) bons
39
INPUT
SBI
PLL
frequency
setting
and
digital
—»
analog
conversion
setting
signal
input.
@
40
INPUT
SBT
Signal
input
of
reference
clock
for
data
transfer
of
input
signal
terminal
39.
@
41 | — — Not used in this unit aa
|
42
INPUT
AVDD
Power
supply
terminal
(5
V)
=
|
m@ FUNCTION @
e COMMON
@
e SEGMENT
Terminal
No. of
1C904
@ Common output wavefo
Terminats, 34 and 17 alwa
waveforms are shown beld
(NOTE)
For the output waveform of ea
segment, the potential differen
from that of COM terminal wa
form is measured. So, do not cd
nect the groundign wire of ot
equipment to the oscilloscoq
Otherwise, |C904 will break do

Technics Quartz ST-G7 Specifications

General

Brand	Technics
Model	Quartz ST-G7
Category	Tuner
Language	English