Icom IC-7600

3 - 10
Pin
No.
Line
Name
Description I/O
1 CNTV
TFT contrast control. (D/A)
(1–2.3 V)
O
2 PWRD
POWER LED control.
(0 V=Light OFF, 3.3 V=Light ON.)
O
3 LDAT Expander (BU2099) data. O
4 LST Expander (BU2099) strobe. O
5 RTCCK Expander (BU2099) clock. O
8 RTCCE Clock IC (RX-4581) chip enable. O
9 MOND [MONITOR] LED control signal. O
16 RTCIRQ Clock IC (RX-4581) interlude control. I
19 RSB RIT dial (24x4 pulses) phase-B input. I
20 RSA RIT dial (24x4 pulses) phase-A input. I
21 MSB Main dial (250x4 pulses) phase-B input. I
22 MSA Main dial (250x4 pulses) phase-A input. I
23 TMD
Timer LED control.
H=Light ON.
O
24 LEDV LED brightness control. (PWM, 600 Hz) O
25 BKLS
LCD backlight ON/OFF.
H=Backlight ON.
O
26 CFLV
CFL backlight brightness control. (PWM, 600
Hz)
O
28 PHNI
Headphone connection detect.
H=Connection detected.
I
29 DTXD Falsh read data. O
30 DRXD Flash write data. I
31 SLOS
Flash write clock.
H=While writing.
O
32 DBP1 Flash write "BUSY." O
33 LTXD
Data output (UART) for the communication
with main CPU.
O
34 LRXD
Data input (UART) for the communication with
main CPU.
I
35 DOTK Ele-key input. (Dot) I
36 DSHK Ele-key input. (Dash) I
37 SQSS
Squelch signal to the [MICROPHONE JACK].
H=Squelch open.
O
38 RTCDT Clock IC (RX-4581) data. I/O
40 TRAK [TRANSMIT] input. (Pull-up) I
41 F1K [F-1] input. (Pull-up) I
42 F2K [F-2] input. (Pull-up) I
43 F3K [F-3] input. (Pull-up) I
44 LOE Expander (BU2099) output enable. O
45 F4K [F-4] input. (Pull-up) I
46 F5K [F-5] input. (Pull-up) I
47 F6K [F-6] input. (Pull-up) I
49 SSBK [SSB] input. (Pull-up) I
50 CWK [CW] input. (Pull-up) I
51 RTYK [RTTY/PSK] input. (Pull-up) I
52 AMK [AM/FM] input. (Pull-up) I
53 FILK [FILTER] input. (Pull-up) I
55 EXTK [EXIT/SET] input. (Pull-up) I
56 PLYK [PLAY key input. (Pull-up) I
57 RECK [REC] input. (Pull-up) I
58 XFCK [XFC] input. (Pull-up) I
65 MPRK [MP-R] input. (Pull-up) I
66 MWK [MW] input. (Pull-up) I
67 UPK [
▲
] input. (Pull-up) I
• FRONT CPU (LOGIC UNIT: IC101)
Pin
No.
Line
Name
Description I/O
68 DWK [
▼
] input. (Pull-up) I
69 MPWK [MP-W] input. (Pull-up) I
70 VMK [V/M] input. (Pull-up) I
71 ATK [AUTO TUNE] input. (Pull-up) I
72 TSK [TS] input. (Pull-up) I
73 PWRK [POWER] input. (Pull-up) I
76 FPWRS
Analog circuit control signal.
H=Transceiver power ON.
I/O
83,
84
PB2B,
PB2A
Input ports for [PBT2] (outer control). I
85,
86
PB1B,
PB1A
Input ports for [PBT1] (inner control). I
87 LG_RES
Logic circuits reset signal.
H=Reset.
O
88
LG_
PWR
Logic circuits power control signal.
H=Transceiver power ON.
O
89 MUDL [MIC GAIN] input. (A/D) I
90 AS4
Voltage from the analog SW (CD4501). (A/D)
(0–3.3 V)
I
91 AS3
Voltage from the analog SW (CD4501). (A/D)
(0–3.3 V)
I
93 AS1
Voltage from the analog SW (CD4501). (A/D)
(0–3.3 V)
I
98 ASL2 Analog SW (CD4501) control signal. O
99 ASL1 Analog SW (CD4501) control signal. O
100 ASL0 Analog SW (CD4501) control signal. O
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