Icom IC-R10 Service Manual

4-4
CPU
PORT
ALLOCATIONS
4-4-1
CPU
(IC1 on
the LOGIC
unit)
CPU (IC1)
—
continued
Pin
number
Port
name
Description
46 +3SC
Outputs
control
signal for the +3S
regulator circuit.
Low;
During
PLL unlock
or power
save.
48
VSCC
Outputs VSC
control
signals.
Low
: When
the VSC
function
is ON.
49
MUTE
Outputs
AF mute switch
(IC950)
control
signals.
Low ;
While
muted.
50
BEEP
Output
port for
beep audio
signals.
51
AFONC
Outputs a
control signal
for
AF
amplifier
regulator
circuit.
High:
When
squelch is open.
(FM mode
only)
52-59 1/00-1/07
Ouput
ports for
the LCD
control data.
60
RESET
Input port
for the
reset signal.
61 FUNG
Input
port for the
[FUNC]
switch.
Low : While
[FUNC]
switch is
pushed.
62
POWSW
Input
port for the
[PWR] switch.
Low:
While
[PWR] switch is
pushed.
63
D-UD
Input port
for the
[DIAL].
64
D-CK
65
SQL
Input
port for the
main band
noise
signals.
66
S-SQL
Input port
for the sub-band
noise
signals.
73
UL
Input port
for PLL unlock
signal
from
the
PLL ICs.
76
RSSI
Input
port
for
the
main
band
receive
signal
strength
level.
77
CENT
Input port
for the
AFC control
voltage.
78
B
Input
port
for the
sub-band receive
signal
strength
level.
79
BATT
Input port
for
connected
voltage low
battery
detection.
80
n
Input
port
for the PLL lock
voltage
information.
Pin
number
Port
name
Description
1
VSC
Input port for
VSC detected
signals.
High:
Unmodulated
or
beat
signals
are
received.
Low
:
Modulated
signals are
received.
3
BFOS2
Output
port for BFO
control
signal.
Low ; LSB/CW
mode (453.5
kHz)
High: USB
mode (456.5
kHz)
5
VXO
Output port
for VXO
frequency
control voltage.
6
TUNE
Outputs
tunable
band pass
filter
control voltage.
8
CLIN
Input port for the
cloning or
Cl-V
control
signals.
9
CLOUT
Output
port for the cloning
or Cl-V
control
signals.
10 BF03
Output
port for
BFO
regulator
control
signal.
Low :
While SSB/CW mode
is
selected.
12
SDATA
Outputs serial
data signals
to
the PLL
ICs,
EEPROM
(LOGIC unit,
1C41)
and I/O
expander ICs, etc.
13
SCK
Outputs
serial
clock
signal
to
the
PLL
ICs,
EEPROM
(LOGIC unit,
IC41)
and I/O expander
ICs, etc.
14
ISTB
Outputs
strobe
signals
for the I/O
expander
ICs.
15
VSCS
Outputs
VSC-time
constant
control
signal.
High:
While unmodulated
signal or no
RF signal is
received
Low :
While
receiving
modulated
signals.
16
ESO
Output
port for
serial data
signals to
the
EEPROM 1C
(LOGIC unit, IC41).
17
ESI
Input port
for serial data
signals from
the
EEPROM
1C
(LOGIC
unit. IC41).
18
ESCK
Output port
for clock
signal to
the
EEPROM 1C
(LOGIC
unit, IC41).
19-22
KS0-KS3
Output
strobe
signals to
the key
matrix.
25,26
PSTB1
,
PSTB2
Output
strobe
signals to the
PLL ICs.
27-31
K0-K4
Input
ports for the
key
matrix.
32,
34
MO,
Ml Input ports
for
the initial matrix.
44
3LCON
Outputs
control
signal for the +3C
and
+3L
regulator circuits.
High: While
turning power
ON.
45
LAMPO
Outputs
LCD and key
backlight
control
signal.
Low : While
backlight is
ON.

Icom IC-R10 Specifications

General

Brand	Icom
Model	IC-R10
Category	Receiver
Language	English