Port Allocations - Icom IC-M91D Service Manual Addendum

4-5 PORT ALLOCATIONS

• CPU (MAIN UNIT: IC360)
PIN LINE
No. NAME
[Y] key input.
10 UP
L=Pushed.
[Z] key input.
11 DN
L=Pushed.
[ ] key input.
12 LEFT
L=Pushed.
[ ] key input.
13 RIGHT
L=Pushed.
[ENT] key input.
14 ENT
L=Pushed.
[CLEAR] key input.
15 CLR
L=Pushed.
[MENU] key input.
18 MENU
L=Pushed.
[16/C] key input.
19 CH16
L=Pushed.
[DISTRESS] key input.
20 DIST
L=Pushed.
Soft key (S1*) input.
21 S1
L=Pushed.
Soft key (S2*) input.
22 S2
L=Pushed.
CPU reset.
25 NRST
L=The CPU is reset.
26 TEMPV Temperature sensing voltage.
27 TDETV Transmit output power sensing voltage.
28 LOINV Lock voltage input.
29 WDECV Weather alert signal detect.
Power switch input.
34 PWSW
L=Pushed.
AF power AMP (IC362) control.
36 MUTE
L= AF Mute.
40 DSCOUT DSC signal encoding output.
41 BEEP Beep audio. (Square waves)
44 NOISEV Noise level detect.
RSSI voltage from the IF IC (RF
45 RSSIV
UNIT: IC170).
46 BATTV Battery pack voltage.
External connection detect.
47 EXTDET
L=Connection is detected.
Soft key (S3*) input.
49 S3
L=Pushed.
Soft key (S4*) input.
50 S4
L=Pushed.
[PTT] input.
53 PTTIN
L=Pushed.
[VOL/SQL] key input.
54 MONI
L=Pushed.
External [PTT] input.
55 EXPTTIN
H=Pushed.
56,
DB0, DB1 LCD driver (DS246) control signal.
57
58 SDATA Common serial data.
59 SCK Common serial clock.
63 DASTB D/A converter (IC190) strobe.
64 PLSTB PLL (RF UNIT: IC1) strobe.
AF power AMP control.
79 AFVS H= AF power AMP (IC362) is acti-
vated.
DESCRIPTION
PIN LINE
I/O
No. NAME
I
80 SPON
I
81 LOW
I
85 PTTM
I
I
86 M5VS
I
87–
DB2–DB7 LCD driver (DS246) control signal.
92
I
93 WR0
I
98 G_HIB
I
99 G_WKUP
I
I 103 DSCIN
111 G_TXD
I
112 G_RXD
113 CLOTXD
I
114 DTEST
I
116 CLORXD
I
I
117 PON
I
118 T5VS
O
119 TXMS
O
O 122 RVS
I
123 RINTM
I
I
124 CD
I
125 CS
I
126 RESETB
I
132 AFVCTRL
I
I
135 UNLK
136 DIMM
I
141 ECK
142 EDATA
I/O
I
*; Soft key location
I
I
I
S2
O
S1
4 - 4
DESCRIPTION
RX AF line switching control.
H= AF signal is output from the inter-
nal speaker.
Transmit output power control.
L=High power is selected.
MIC mute switch control.
L=Internal MIC mute.
H= External microphone is used, or
while receiving.
Power supply line "M5V" control.
H=While transceiver's power is ON.
LCD driver (DS246) write mode switch. O
GPS module (CHASSIS: EP1) oper-
ating mode switching.
L=Standby mode.
GPS module (CHASSIS: EP1) status.
L= Low power state (Hibemate mode/
standby mode).
H=Operation mode.
Decoded DSC signal input.
GPS data output. (4800 bps)
GPS data input. (4800 bps)
Cloning data.
DSC loop back testing signal.
Cloning data.
Power supply line VCC control.
L=While transceiver's power is ON.
Power supply line "T5V" control.
H=While transmitting.
Transmission mute.
H=TX Mute.
Power supply line "R3V" control.
H=While receiving.
RX AF mute switch control.
H=AF mute.
LCD driver (DS246) mode switching
control.
L=While sending control data.
H=While sending display data.
LCD driver (DS246) chip select.
LCD driver (DS246) reset signal.
L=The LCD driver is reset.
AF circuit power supply voltage control.
L= While the internal speaker is
used.
PLL (RF UNIT: IC1) unlock detect.
L=Unlocked.
LCD brightness control.
EEPROM (IC340) serial clock.
EEPROM (IC340) serial data.
S3
S4
I/O
O
O
O
O
O
O
I
I
O
I
O
O
I
O
O
O
O
O
O
O
O
O
I
O
O
I/O