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
