4 - 10
Outputs microphone mute signal for
right side display.
Low: While microphone is muting.
Output clock shift signal.
Outputs transmit mute control signal.
High:While transmit is muting.
Input port for microphone’s PTT detect-
ing signal.
Outputs sub band select signal.
Outputs RF transmit power supply cir-
cuit control signal for left side display.
High:While transmitting 400–479
MHz.
Outputs RF transmit power supply cir-
cuit control signal for right side display.
High:While transmitting 136–174
MHz.
Outputs DTCS filter select signal.
I/O port the data signal from/to the
EEPROM (IC2000, pin 5).
Outputs clock signal to the EEPROM
(IC2000, pin 6).
Input port for PTT detect signal in pack-
et mode.
Outputs modulation mute signal on
packet mode
Low: While packet mod. is muting.
Input port for data signal from HM-98.
Input port for up/down signal from the
microphone.
Outputs the microphone mute signal to
the CONTROL unit.
Low: While the microphone is muting.
Input port for the connecting micro-
phone detect signal for HM-98.
Low: While HM-98 is connecting.
Input port for the RSSI signal from the
FM IF IC (IC1004, pin 12) to detect
receiving signal strength for right side
display.
Input port for the RSSI signal from the
FM IF IC (IC1001, pin 12)to detect
receiving signal strength for left side
display.
Input port for chassis temperature
detecting signal.
Input port for the reverse power detect-
ing signal.
Input port for the squelch level for right
side display.
Input port for the DTCS or CTCSS sig-
nal for right side display.
Input port for the squelch level for the
left side display.
Input port for the DTCS or CTCSS sig-
nal for left side display.
Outputs DTMF, E-tone, beep signals.
Outputs DTCS and CTCSS signals
Outputs the packet squelch signal.
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17
18
20
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22
24
25
26
27
28
29
30
31
32
33
34
35
38
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40
41
44
45
47
UMMUTE
CK_SHIFT1
TX_MUTE
MIC_PTT
SUB_SEL
UTX_CTRL
VTX_CTRL
DTCS_SEL
ES_DATA
ES_CK
P_PTT
P_MOD_MUTE
98_DATA
MIC_U/D
CM_MUTE
MIC_SEL
R_RSSI
L_RSSI
TEMP
REV_DET
R_SQL
R_DTCS_IN
L_SQL
L_DTCS_IN
DTMF
DTCS
P_SQL
Pin
Port
Description
number
name
Outputs cooling fan control signal.
Outputs the cloing data signal.
Input port for the cloing data signal.
Outputs serial data to the D/A convert-
er IC (IC1, pins 15–17).
Outputs microphone mute control sig-
nal for MAIN unit.
Low: While the microphone is muting.
Outputs AF mute control signal for left
side display.
High:While AF audio is muting.
Outputs AF mute control signal for right
side display.
High:While AF audio is muting.
Outputs detector mute signal for left
side display.
Outputs detector mute signal for right
side display.
Outputs the volume serial signal.
Outputs the RX RF power supply con-
trol signal for left side display.
Outputs the VCO select signal for right
side display.
High:While receiving 320–999.9 MHz
on right side display.
Input port for the PLL unlock signal for
left side display (VCO unit; IC1, pin 7).
Low: The PLL Lock voltage is unlock
for left side display.
Outputs 1200or 9600 bps packet baud
rate select signal.
Low: 9600 bps baud rate is selected.
Outputs the 400 MHz receiver circuit
select signal for left side display.
High:While receiving 310–550 MHz
on left side display.
Outputs the 300 MHz receiver circuit
select signal for left side display.
High:While receiving 205–309.995
MHz on left side display.
Outputs receive mode select signal for
left side display.
Low: AM mode is selected.
Outputs receive mode select signal for
right side display.
Low: AM mode is selected.
Outputs the 220 MHz receiver circuit
select signal for left side display.
Low: While receiving 174–254.995
MHz on left side display.
Outputs the 144 MHz receiver circuit
select signal for left side display.
Low: While receiving 118–173.995
MHz on left side display.
Outputs the 800 MHz receiver circuit
select signal for right side display.
Low: While receiving 810–999.990
MHz on right side display.
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54
55
56
57
58
60
61
62
63
64
65
66
67
68
69
72
73
74
FAN_CTRL
CLONE_OUT
CLONE_IN
D/A_DATA
D/A_CK
D/A_STB
MM_MUTE
L_AF_MUTE
R_AF_MUTE
L_DET_MUTE
R_DET_MUTE
AF_VOL_CK
AF_VOL_DATA
L_R5CTRL
R_UVCO_SEL
L_UNLOCK
1200/9600SEL
L_RX400
L_RX300
L_AM
R_AM
R_RX220
L_RX140
R_RX800
Pin
Port
Description
number
name
4-5 PORT ALLOCATIONS
4-5-1 CPU (MAIN UNIT; IC2013)