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4 - 4
BALL
No.
LINE
NAME
DESCRIPTION
I/O
A4
G_RES
GPS module (CHASSIS: EP1) controller
(IC1) reset.
L: Reset.
O
A5
REMOTE HM-75A key input detect.
I
A6
VIN
External power supply voltage.
I
A7
RTONE
DV signal/recorded audio.
I
A8
TTEMP
TX AMP (MAIN UNIT: Q45) temperature
sensing voltage.
I
A10
DICK1
[DIAL] (outer dial) (S12) phase-A
I
A11
UNLK
PLL unlock detect.
L: Unlock is detected.
I
A12
DALD
D/A converter (MAIN UNIT: IC11) strobe.
(“H” and “L” are reversed.)
O
A13,
A14
KS0,
KS2
Key matrix ports.
O
B1
DTMF
DTMF/European tone/Beep signal.
O
B5
LV
Lock voltage.
I
B7
TXI-V
TX current fl ow sensing voltage.
I
B8
TEMP
Temperature sensing voltage.
I
B10
DIUD1
[DIAL] (outer dial) (S12) phase-B
I
B11
CLSFT
CPU clock frequency control.
H: The clock frequency is shifted.
O
B13
KS1
Key matrix port.
O
B15
KR0
Key input detect.
I
C2
CTCSS
CTCSS/DTCS tone signal.
O
C5
VOX
VOX sensing voltage.
I
C7
CTCIN
CTCSS tone signal input.
I
C10
DIUD2
[DIAL] (inner dial) (S12) phase-B.
I
C11
DTCS
CTCSS/DTCS fi lter (R65, R68, C78, C80)
switching.
H: DTCS is in use.
O
C13
KS3
Key matrix port.
O
C14
KR1
Key input detect.
I
C15
DCIN
External power supply connection detect.
L: External DC input.
I
D1
DADATA
D/A converter serial data.
(“H” and “L” are reversed.)
O
D2
G_RXD
GPS data input.
I
D4
DCSFT
DSP clock frequency control.
L: Clock frequency is shifted.
O
D5
BTSENC
Battery type detect.
( Detecting intermediate voltage of the bat-
tery pack.)
I
D6
BTVIN
Battery pack voltage.
I
D7
RSSI
S-meter voltage.
I
D10
DICK2
[DIAL] (inner dial) (S12) phase-A.
I
D11
DACK
D/A converter (MAIN UNIT: IC11) clock.
(“H” and “L” are reversed.)
O
D12
KR2
Key input detect.
I
D13
BTDET
Battery attachment detect.
L: Battery attached.
I
D14
PWRSW
[POWER] key.
L: Pushed.
I
E4
G_TXD
GPS data output.
O
F12
CHGC
Charging ON/OFF control.
H: While charging.
O
F13
TXLED
TX LED (DS7) driver (Q9) control.
H: While transmitting.
O
F15
BLED
BUSY LED (DS7) driver (Q8) control.
H: While the squelch is open.
O
G1
RESET
CPU reset.
L: Reset.
I
BALL
No.
LINE
NAME
DESCRIPTION
I/O
G3
LIGHT
LCD and key backlight (DS1, DS3) driver
(Q23) control.
O
G4
DIM
LCD backlight (DS1, DS3) dimmer control.
H: Blight.
O
G12
INTMIC
Internal MIC (MAIN UNIT: MC1) control.
H: Internal microphone is in use.
O
G14
CHGH
Charging current control.
H: While charging.
O
G15
PCON
Power lines “PS3” and “5VS” SW (MAIN
UNIT: IC4) control.
H: While the transceiver’s power is ON.
O
H12
VCO_
SEL
VCO power supply control.
L: While the transceiver's power is ON.
O
J4
RTC_
IRQ
Real time clock “IRQ” input.
I
J12
MMUTE
MIC mute SW (IC16) control.
L: Mute.
O
J13
TXMUTE
TX mute SW (MAIN UNIT: Q43) control.
H: mute.
O
J15
PFMC
GPS/DSP operating mode control.
O
K1
NOIS
Noise level sensing voltage.
I
K4
DSP_
REQ
DSP “REQ” input.
I
K12
VCO_
MUTE
Modulation mute SW (MAIN UNIT: Q21)
control.
H: Mute.
O
K13
WN
2nd IF fi lter (MAIN UNIT: FI1 and FI2)
switching control.
L: FI1 is selected. (While in the FM-N or
DV mode.)
O
K14
MIC1
MIC gain control.
MIC1 MIC2
MIC gain
level
L
L
4
H
L
3
L
H
2
H
H
1
O
K15
MIC2
L12
SQL
[SQL] (MAIN UNIT: S1) input.
L: Pushed.
I
L14
PS3C
Power line “PS3C” SW (Q13) control.
L: While in the power save mode.
O
L15
R3C
Power line “R3C” SW (MAIN UNIT: Q24)
control.
L: While receiving.
O
M2
CLOUT
Cloning data.
O
M5
DSP_
STB
DSP (IC18) strobe.
O
M6
DSPC
Power line “CVDD_1.35V” SW (IC10) control.
H: While the DSP’s power is ON.
O
M7
PPS
PLL operating mode control.
H: While in the power save mode.
O
M8
LCDRS
LCD (DS10) reset.
O
M9
LCDCS
LCD (DS10) chip select.
O
M10
DSP_
REMP
DSP “REC EMP” input.
I
M12
TX232
RS-232C serial data output.
O
M14
ESIO
EEPROM (IC7) serial data.
I/O
M15
T3C
Power line “T3C” SW (MAIN UNIT: Q17,
Q19) control.
H: While transmitting.
O
N1
CLIN
Cloning data.
I
N2
SD_
SENC
SD Card insertion detect.
L: A microSD card is inserted.
I
N3
SD_TXD MicroSD card data output.
O
4-5 PORT ALLOCATIONS
• CPU (LOGIC UNIT: IC5)