Icom IC-7100 Service Manual

3-10
3-4 PORT ALLOCATIONS
• MAIN CPU (MAIN UNIT: IC6202)
BALL
No.
LINE
NAME
DESCRIPTION I/O
A4 FORL Forward wave in the TX signal sensing volt-
age.
I
A5 MUDL Microphone [UP]/[DN] key input.
1.6 V or higher=”OFF”
1.2 to 1.6 V=[DN]
1.2 V or lower=[UP]
I
A6 FMTL Repeater tone, CTCSS and DTCS signals. I
A8 FRWT DSP fi rmware writing control.
High=Write mode.
O
A11 PWRS Main power line control.
High=While the transceiver's power IS ON.
O
A12 RTC_SCL Real-time clock IC serial clock. O
B4 THML TX power AMP temperature sensing volt-
age.
I
B5 ALCL ALC level sensing voltage. I
B7 DRESID DSP reset.
Low=Reset.
O
B9 MDAT Expander serial data. O
C2 REFV Reference frequency adjustment voltage. O
C4 IDL TX power AMP/driver AMP current sensing
voltage.
I
C5 DPTL SEND signal from the [DATA1]/[DATA2]
jack.
I
C7 WFML RSSI voltage in the WFM mode. I
C9 MSTB1 BPF select expander serial strobe. O
C11 UPWS USB peripheral devices power supply con-
trol.
High=A USB device is connected.
O
D1 RTC_IRQ Real-time clock interrupt request.
Real-time clock IC serial clock.
I
D2 UDRXD USB serial data. I
D4 VDL Power supply voltage. I
D5 REFL Refl ected wave in the TX signal sensing
voltage.
I
D8 MCK Expander serial clock. O
D9 MSTB2 DDS fi lter select expander serial strobe. O
D11
RTC_SDA Real-time clock IC serial data. I/O
D15 DSTB Main expander serial strobe. O
E4 UDTXD USB serial data. O
E13 EDT EEPROM serial data. I/O
E14 ECK EEPROM serial clock. O
G3 HSK0 DSP handshake data. (1 of 2) I
G4 HSK1 DSP handshake data. (2 of 2) I
J4 PDV Power down detect.
Low=Power line is shutting down.
I
K1 USSENI PTT input through the connected USB de-
vice.
High=While transmitting.
I
K2 MMDK Microphone control data. I
K3 USKI CW/RTTY input through the connected
USB device.
Low=While keying in the CW/RTTY.
I
M1 SKYS Keying input from the connected telegraph
key.
Low=While keying in the CW/RTTY.
I
M2 LTXD Front CPU communication data. O
M5 PLDA Record/Playback audio data. O
M7 DPWS The DSP IC power control.
High=While the DSP is used.
O
M9 DSPR DSP serial data. O
N1 LRXD Front CPU communication data. I
N2 RTKI RTTY keying input.
High=Inputting Space.
I
BALL
No.
LINE
NAME
DESCRIPTION I/O
N3 SD_TXD microSD card serial data. O
N4 REDA Record/Playback audio data. I
N5 CRXD/
CBSY
CI-V data/Bus busy signal. I
N7 SD_PTC microSD card write protect mode detect.
High=While in the write protect mode.
I
N9 DSPCK DSP data serial clock. O
N14 RXS RX circuit (All bands) control.
High=While receiving.
O
P1 SD_CS microSD card chip select.
Low= While the inserted microSD card is
busy.
O
P2 SD_SCK microSD card serial clock. O
P4 PLCK Record/Playback audio output control
clock.
O
P5 VBUS USB device connect detect.
High=A USB device is connected.
I
P7 ESTA External antenna tuner START signal.
Low=Tuning start.
O
P13 DRXD Low speed communication data from the
connected device.
I
P14 VRXS VHF band RX circuit control.
High=While receiving on the VHF band.
O
R1 SD_RXD microSD card serial data. I
R2 RECK Record/Playback audio input control clock. O
R4 CTXD CI-V data. O
R5 PWRK [PWR] input.
Low=Pushed.
I
R6 HSENI External SEND signal input.
High=Transmitting.
I
R7
SD_SENC microSD card insertion detect.
High=A microSD card is inserted.
I
R8 DSPX DSP serial data. I
R9 EKEY External antenna tuner KEY signal input.
Low= While tuning or when the tune is
failed.
I
R10 SCRES Sub CPU reset control.
Low=Reset.
O
R14 URXS UHF band RX circuit control.
High=While receiving on the UHF band.
O
R15 HRXS HF/50 MHz/70 MHz band RX circuit con-
trol.
High=While receiving on the HF band.
O

Icom IC-7100 Specifications

General

Brand	Icom
Model	IC-7100
Category	Transceiver
Language	English