Description
2.8JLsec
FM
programmable counter input terminal.
The
FM
local
osclll~al
which
is
divided
into 1/30 or 1/32 by the prescaler (IC6
RVITD6104P) is inputted to this terminal.
[Example]
FM
100 MHz
1.6 V
1 V
FM
IN
37
Pin
No.1
Symbol
Description
Muting output terminal.
The muting output
is
delivered from the MUTE
terminal at the time of key operation and other
cases.
STO IPreset memory storage terminal.
Pressing the memory switch (56) brings pin 13
to
"L"
to ready the circuitry for storage.
Mute
A·STOPIAuto·search stop input terminal.
When abroadcast is detected during auto·
search operation,
"H"
level signal
is
applied
from
03
(250601, SWITCHING)
to
the A·STOP
terminal
to
stop the auto·search.
36
12
13
38 IPSC IThis is the terminal
to
deliver the frequency
14-17
I
M1-M41
Memory addressing input terminals.
II
dividing ratio change over output signal
to
the
When the desired program switch (57, 58, 59or pre·scaler (IC6 RVITD6104P).
510)
IS
pressed
in
the memory set ready
condition, the corresponding terminal
(M1,
M2,
ffiJUlI6V
M3 or M4) goes
"L".
At this time the reception
frequency data
is
-stored. The stored data can
be read
by
simply pressing the corresponding
OV
program switch (57, 58, 59 or 510).
~JLsec-1
[Example]
FM
100 MHz
II
II
20-22
ICK·1 IReception frequency data and timing signal
CK·2 output terminals. 39
AM
IN
AM
programmable counter input terminal.
Data Acycle of data and signal is serially delivered The
AM
localoscillation signal
is
directlyapplied
only when the reception frequency is altered, from pin 8of
IC301
(PVIUPC1215VE)
to
the
AM
Le.,
when the UP/DOWN key
is
pressed, the
IN
terminal
in
the
AM
mode.
memory
is
read, or the band is changed. I
___
o.~-
The timing signals for data signal reading are
delivered from the
CK·1
(pin 20) and CK·2 (pin
4V
21) terminals.
The reception frequency data
is
delivered from
the DATA terminal (pill 22).
OV
JlII.Il.UJLJLIl
CK·1
J"lJUl.IlJlIlJlJl.lUlJl.JUlJll
CK·1
II
I I
7JLsec
~CK.2~CK.2
[Example]
AM
1000 kHz
Droa Droa
[Example]
AM
1000 kHz [Example]
FM
100 MHz
..
IINH
40 IInhibit input terminal.
When the power is turned on, the voltage rising
time at the INH terminal (pin 40) is delayed for a
Phase comparator output terminal.
II
IIcertain time [the time constant of R90 (100
kO)
34 I
00·1
Iand C94
(1JLF)].
The band mode selection data
When the phase ofthe frequency·divided output is read during this rising time.
of the programmable counter lags behind the
reference frequency, the output at the phase
comparator output terminal goes
"L"
for the
period corresponding to the phase difference.
When the counter output leads, the comparator
"
42 IVDD IAvoltage of 5
V±0.5
Vsupply'to this terminal
output goes
"H"
for the period corresponding
to
during device operation.
the phase difference.
Pin No. ISymbol
RM-1100 RM-1100
Fig.
26
Voo
psc
AM
IN
FM
IN
,
~
,
BI
B2
EI
E2
XT
XT
STO
2)
Block Diagram
Voo
TEST
INH
AM
IN
PSC
FM
IN
Mute
,n---Pee
00-1
00-2
HI
H2
H3
H4
h....--.-
H5
Li
L2
L3
b-----
L4
0/5
~tl-----
Dote
Fig.
25
RVITC9137P (IC7): EACH TERMINAL FUNCTION &
WAVEFORM
GND--d
XT
XT
81
82
EI
E2
OSC
AIM
UP
DOWN
A-STOP
STO
Mi
M2
M3
M4
-
M5
M6
CK-I
CK-2
3)
Explanation
of
each terminal
1) Terminal view
Pin No.
Symbol
Description Pin No.
Symbol
Description
1GND Ground terminal. 8OSC External CR connection terminal.
Externally connected C123 (10
V,
2.2
JLF)
and
XT,XT R133 (27 kO) determine the auto·search scan·
2,3
Used
to
connect aquartz oscillator (7.2 MHz). ning speed, automatic reset of the preset
memory storage state, and the shifting time of
manual tuning to fast scanning.
4,5
81,
82
Input terminals for FM/AM band switching and
IF fine tuning selection. AIM Auto/manual switching input terminal.
Applying the voltages shown below effects band 9
switching and IF selection. Selects manual or auto·search mode
in
the
up/down tuning mode.
"L"
level......manual mode
81
(Pin
4)
B2 (Pin
5)
"H"
level......auto·search mode
"l"
'ILl!
AM
(450 kHz) Sustained pressing ofthe UP/DOWN tuning key
for acertain time switches from manual mode
to
"HII
"H"
FM
(10.7 MHz) auto·search mode, and moves the
AIM
terminal
from
"L"
to
"H".
"H"
Level: 5 V
"L"
Level: 0 V
6,7
E1,
E2 Band-mode switching input terminals. 10,
11
UP, Tuning key input terminals.
Applying the voltages shown below switchesthe DOWN When the voltages shown below are applied to
band mode. the UP and DOWN terminals, the reception
frequency is raised or lowered.
E1
(Pin
6)
I
E2
(Pin
7)
IUP (Pin
10)
DOWN (Pin
11)
"H"
"H"
The reception frequency
is
locked.
ilL" I"HI! For U.S.A. BAND
"H"
"L"
The reception frequency lowers.
"L"
"H"
The reception frequency rises.
"H"
Level: 5 V
"L"
Level: 0 V
"H"
level: 5
V,
"L"
level: 0 V
[1]
[Ig]