Port Allocations - Icom IC-9100 Service Manual

3-4 VOLTAGE BLOCK DIAGRAM
H3.3V
DC-IN HV H3.3V
13.8V REG
"PWRS"
SW
3-5 CPU PORT ALLOCATIONS
• FRONT CPU (DISPLAY BOARD; IC401)
Pin Line
No. Name
LCD contrast control. (segement area)
1 CNT2V
(1–2.3 V)
LCD contrast control. (dot area)
2 CNT1V
(1–2.3 V)
TX LED control. (SUB BAND)
8 STDS
H=Lights. (While transmitting)
RX LED control. (SUB BAND)
9 SRDS
H=Lights. (While receiving)
Front CPU reset.
10 FRES
L=Reset.
19 RITDBK [RIT/ TX] dial phase-B.
20 RITDAK [RIT/ TX] dial phase-A.
21 MAINDAK [MAIN] dial phase-A.
22 MAINDBK [MAIN] dial phase-B.
TX LED control. (MAIN BAND)
23 MTDS
H=Lights. (While transmitting)
24 BKLV LCD backlight control. (PWM)
RX LED control. (MAIN BAND)
25 MRDS
H=Lights. (While receiving)
29 DTXD UART port (TX)
30 DRXD UART port (RX)
Data output (UART) for the communication
33 LTXD
with the main CPU.
Data input (UART) for the communication
34 LRXD
with the main CPU.
"PWRK "
FRONT
FRONT
CPU POWER SW
H14V
+5V
+5V
REG
LOGIC
CIRCUITS
+1.2V
+3.3V
DC-DC
+3.3V
+1.2V
–8V
+3.3V
–8V
ANALOG
+13.8V
CIRCUITS
+8V
+8V
REG
+5V
+5V
REG
–12V
DC-DC
Description
Pin Line
No. Name
35 DOTK Ele-key input. (Dot)
36 DSHK Ele-key input. (Dash)
Headphones connection detect.
37 PHNK
H=Connected.
40 SPCHK [SPEECH/LOCK] input. (Pull-up)
43 PBCLK [PBT-CLK] input. (Pull-up)
45 RITCLK [CLEAR] input. (Pull-up)
[ TX] input. (Pull-up)
46 DTXK
47 FILK [FILTER] input. (Pull-up)
48 XFCK [XFC] input. (Pull-up)
49 MENUK [MENU] input. (Pull-up)
50 RITK [RIT] input. (Pull-up)
51 F5K [F-5] input. (Pull-up)
52 F4K [F-4] input. (Pull-up)
53 F3K [F-3] input. (Pull-up)
54 F2K [F-2] input. (Pull-up)
55 F1K [F-1] input. (Pull-up)
56 NOTK [NOTCH] input. (Pull-up)
57 NRK [NR] input. (Pull-up)
58 ANTK [ANT] input. (Pull-up)
59 TUNK [TUNER] input. (Pull-up)
61 TRAK [TRANSMIT] input. (Pull-up)
63–
LD7–LD0 LCD segment ports.
70
79 SDIALBK [SUB] dial phase-B.
80 SDIALAL [SUB] dial phase-A.
81 MCHBK [M-CH] dial phase-B.
82 MCHAK [M-CH] dial phase-A.
83 PBT2BK [PBT] outer dial phase-B.
84 PBT2AK [PBT] outer dial phase-A.
85 PBT1BK [PBT] inner dial phase-B.
86 PBT1AK [PBT] inner dial phase-A.
I/O
88 PITCHL [CW PITCH] dial input.
90 NRL [NR] dial input.
O
91 NOTL [NOTCH] dial input.
O
92 MUDL [MIC] Up/Down input.
98– ASL2–
Analog SW (CD4501) control.
O
100 ASL0
O
I
• EXPANDER (MAIN UNIT: IC1161)
Pin Line
I
No. Name
I
12 FORL Forward wave detect voltage. (A/D)
I
1 REFL Refl ected wave detect voltage. (A/D)
I
14 ALCL ALC meter voltage input. (A/D)
O
5 IDL Drive AMP current (ID) detect voltage. (A/D)
4 VDL Drive AMP voltage (VD). (A/D)
O
Temperature sensing voltage from the
15 THML
O
thermal sensor on the PA-A UNIT. (A/D)
O
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O
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Description
Description I/O
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