Icom IC-7000 Service Manual - Page 15

MAIN CPU LOGIC UNIT; IC1302, I/O port for the EEPROM IC1301. - reset

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3-6-2 MAIN CPU (LOGIC UNIT; IC1302) Pin Port number name Description 26 CYDT Outputs data signal for the clock generator (IC1201) for display control. 27 CYCK Outputs clock signal for the clock generator (IC1201) for display control. I/O port for the data signal from/to the 29 RTCDT clock IC (IC1304) for clock indication and timer function. Outputs clock signal for the clock IC 30 RTCCK (IC1304) for clock indication and timer function. 42 LOST Outputs strobe signal for the D/A converter (DDS unit; IC901). Outputs strobe signal for the D/A 43 MST converter ICs (MAIN unit; IC2151- IC2154). Input port for the data signal from the 46 MMDK microphone that is connected to the rear [MIC] connector. 47 DRES Outputs the reset signal for the DSP ICs (IC301, IC2201). Outputs the reset signal for the LCD 48 PRES# controller (IC1226) and DDS IC (DDS unit; IC301). Outputs the squelch control signal for 49 SQSS the ACC connector and connected microphone. Outputs clock signal for the D/A 51 MCK converter ICs (MAIN unit; IC2151- IC2154). Outputs serial data signal for the D/A 52 MDT converter ICs (MAIN unit; IC2151- IC2154). Outputs the signal for H SEND or V 57 SDSS SEND selection. High: While V SEND is selected. 58 TDAT • Outputs data signal for AT-180. • Outputs start signal for AH-3/AH-4. 81 DTXD Outputs data signal for the DSP IC (IC301). 82 DRXD Input port for data signal from the DSP IC (IC301). Outputs the TX band signal. 83 2T8V High: While transmitting the 144 MHz band. Outputs the TX band signal. 104 4T8V High: While transmitting the 430 MHz band. Outputs R8 regulator (Q1701, Q1702) 105 RXS control signal. Low : While receiving. Outputs T8 regulator (Q1703, Q1704) 106 TXS control signal. Low :While transmitting. 107 POWS Outputs the power control signal . High:When IC-7000 is power ON. Pin number Port name Description 109 ECK Outputs clock signal to the EEPROM (IC1301). 110 EDT I/O port for the EEPROM (IC1301). 113 FORL Input port for the forward voltage. 114 REFL Input port for the reflection voltage . 115 ALCL Input port for ALC level. Input port for PTT control signal 116 SNDL from the FRONT unit or ACC con- nector. 117 DPTL Input port for PTT control signal from the DATA connector. 118 THML Input port for the temperature detection signal. Input port for [UP] and [DN] switch- 119 MUDL es from the optional microphone (HM-103, SM-20) that is connected to the rear [MIC] connector. 121, 122 DASK, DOTK Input ports for [KEY] jack. 124 MMSL Input port for the HM-151 connection detection. 127 TKEY Input port for tuner ON. 128 TRD Input port for the detected signal for the tuner unit connection. 133 LTXD Outputs data signal to the sub CPU (DISPLAY unit; IC2003). 134 LRXD Inputs data signal from the sub CPU (DISPLAY unit; IC2003). 135 PWRK Input port for [PWR] key. Low : While [PWR] key is pushed. Outputs strobe signal to the DDS 137 3DST IC (DDS unit; IC51) for the 3rd LO signal. Outputs clock signal for the DDS 138 PCK ICs (DDS unit; IC51, IC301) and D/A converter (DDS unit; IC901). Output strobe signal to the DDS IC 140 1DST (DDS unit; IC301) for the 1st LO signal. Outputs serial data signal for the 142 PDT DDS ICs (DDS unit; IC51, IC301) and D/A converter (DDS unit; IC901). 3 - 10

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3 - 10
3-6-2 MAIN CPU (LOGIC UNIT; IC1302)
Pin
number
Port
name
Description
26
CYDT
Outputs data signal for the clock gen-
erator (IC1201) for display control.
27
CYCK
Outputs clock signal for the clock gen-
erator (IC1201) for display control.
29
RTCDT
I/O port for the data signal from/to the
clock IC (IC1304) for clock indication
and timer function.
30
RTCCK
Outputs clock signal for the clock IC
(IC1304) for clock indication and timer
function.
42
LOST
Outputs strobe signal for the D/A con-
verter (DDS unit; IC901).
43
MST
Outputs strobe signal for the D/A
converter ICs (MAIN unit; IC2151–
IC2154).
46
MMDK
Input port for the data signal from the
microphone that is connected to the
rear [MIC] connector.
47
DRES
Outputs the reset signal for the DSP
ICs (IC301, IC2201).
48
PRES#
Outputs the reset signal for the LCD
controller (IC1226) and DDS IC (DDS
unit; IC301).
49
SQSS
Outputs the squelch control signal for
the ACC connector and connected
microphone.
51
MCK
Outputs clock signal for the D/A
converter ICs (MAIN unit; IC2151–
IC2154).
52
MDT
Outputs serial data signal for the D/A
converter ICs (MAIN unit; IC2151–
IC2154).
57
SDSS
Outputs the signal for H SEND or V
SEND selection.
High : While V SEND is selected.
58
TDAT
• Outputs data signal for AT-180.
• Outputs start signal for AH-3/AH-4.
81
DTXD
Outputs data signal for the DSP IC
(IC301).
82
DRXD
Input port for data signal from the
DSP IC (IC301).
83
2T8V
Outputs the TX band signal.
High :
While transmitting the 144 MHz
band.
104
4T8V
Outputs the TX band signal.
High:
While transmitting the 430 MHz
band.
105
RXS
Outputs R8 regulator (Q1701, Q1702)
control signal.
Low : While receiving.
106
TXS
Outputs T8 regulator (Q1703, Q1704)
control signal.
Low :While transmitting.
107
POWS
Outputs the power control signal .
High :When IC-7000 is power ON.
Pin
number
Port name
Description
109
ECK
Outputs clock signal to the EE-
PROM (IC1301).
110
EDT
I/O port for the EEPROM (IC1301).
113
FORL
Input port for the forward voltage.
114
REFL
Input port for the reflection voltage .
115
ALCL
Input port for ALC level.
116
SNDL
Input port for PTT control signal
from the FRONT unit or ACC con-
nector.
117
DPTL
Input port for PTT control signal
from the DATA connector.
118
THML
Input
port for the temperature de-
tection signal.
119
MUDL
Input port for [UP] and [DN] switch-
es from the optional microphone
(HM-103, SM-20) that is connected
to the rear [MIC] connector.
121,
122
DASK,
DOTK
Input ports for [KEY] jack.
124
MMSL
Input port for the HM-151 connec-
tion detection.
127
TKEY
Input port for tuner ON.
128
TRD
Input port for the detected signal for
the tuner unit connection.
133
LTXD
Outputs data signal to the sub CPU
(DISPLAY unit; IC2003).
134
LRXD
Inputs data signal from the sub
CPU (DISPLAY unit; IC2003).
135
PWRK
Input port for [PWR] key.
Low :
While [PWR] key is pushed.
137
3DST
Outputs strobe signal to the DDS
IC (DDS unit; IC51) for the 3rd LO
signal.
138
PCK
Outputs clock signal for the DDS
ICs (DDS unit; IC51, IC301) and
D/A converter (DDS unit; IC901).
140
1DST
Output strobe signal to the DDS IC
(DDS unit; IC301) for the 1st LO
signal.
142
PDT
Outputs serial data signal for the
DDS ICs (DDS unit; IC51, IC301)
and D/A converter (DDS unit;
IC901).