4 - 5
LINE NAME DESCRIPTION
IN/
OUT
STATUS CONDITION
PTT Ext. [PTT] input. IN High While transmitting. (=[PTT] is pushed.)
UNLK PLL unlock signal from the PLL IC (IC29). IN Low While PLL is unlocked.
SCK Clock signal to the DAC (IC17). OUT – –
SDATA Serial data to the DAC (IC17). OUT – –
RSSI RSSI voltage from the IF IC (IC1). IN – –
RFDETV
TX power monitor.
(The DC voltage which is in proportional to the TX power.)
IN – –
THERMC
Internal temperature moniter.
(The DC voltage which is divided by thermistor (R701) and R702.)
IN – –
VOL_IN
[VOL] dial position detect.
(The DC voltage which is divided by R824.)
IN – –
VIN
Remaining battery capacity monitor.
(The voltage of "HV" line divided by R194 and R19.)
IN – –
DETO 1050 Hz tone (for weather alert) detect. IN – –
DA2STB Strobe signal to the DAC (IC17). OUT Low –
EDATA Serial data to the EEPROM (IC25). I /O High –
ECK Clock signal to the EEPROM (IC25). OUT High –
POW TX power setting voltage to the APC AMP (PA: IC27). OUT – –
PCON Control signal to the +3.6V regulator (Q89). OUT High
+3.6V regulator is activated.
(=+3.6V and +5V lines are ON.)
HOUT
Battery type detect.
(The voltage of +5V line which divided by R838 and R839.)
IN High Li-ion battery pack is attached.
HSW Battery type detect circuit control. OUT High Detect circuit is activated.
KR0–KR4 Key matrix. IN Low While the key is pushed.
PSTB Strobe signal to the PLL IC (IC29). OUT High –
PDATA Serial data to the PLL IC (IC29). OUT High –
PCK Clock signal to the PLL IC (IC29). OUT High –
TXC TXV regulator (Q7, 8) control signal. OUT High TXV regulator is activated.
LIGHTC Backlight (DS2, 3) driver (Q75, 76) control signal. OUT High Backlight is ON.
LIGHT [LIGHT] key input. IN Low While the key is pushed.
JACKDET Ext. speaker conection detect. IN High Ext.speaker is connected.
EXTREGC EXT-MIC regulator (Q25, 26) control signal. OUT High
While an ext. microphone is connected.
（
While the VOX circuit is activated; "Low."
）
KS0–KS3 Strobe signals for key matrix. OUT Low All the time "Low."
INI Initial matrix return signal. IN Low Any key is pushed.
EMBI Int. microphone control signal to the MIC controller (Q79). OUT High
Int. microphone is enable.
(While in VOX mode;"Low.")
INTPTT [PTT] key input. IN Low
While the key is pushed.
(=While transmitting)
BEEP Beep sounds (AF square waves). OUT – –
AGCOFF AGC SW (Q85) control signal. OUT High AGC function is disable.
NOISE Noise level for noise squelch. (pulse-type signal) IN High (Upper edge of the pulse)
SPCON
Speaker select signal to the AF power AMP (IC31).
(Switching to internal or External speaker)
OUT Low Ext. speaker is selected.
VOX
VOX control signal from the IC21.
(A portion of MIC signals which is amplifi d by IC21.)
IN A/D
TX=Voltage is high
RX=Voltage is low
AFC AF power AMP controller (Q36, 82) control signal. OUT High
AF power AMP is activated.
(=Squelch is open.)
ALCC ALC AMP controller (Q52) control signal. OUT High
ALC AMP is activated.
(=The ALC function is activated.)
R5C R5S line regulator (Q20, 90) control signal. OUT Low While receiving
ANLC ANL SW (Q21) control signal. OUT High
ANL circuit is activated.
(=The ANL function is activated.)
WXC AF/FM SW (IC2) control signal. OUT High While receiving an WX channel.
SHIFT VCO SW (Q57) control signal. OUT High
While transmitting. (=TX VCO is
activated.)
DETMUTE AF/FM SW (IC2) control signal. OUT High While RX AF is mute.
4-4 PORT ALLOCATIONS
• CPU (IC26)
To Next Page
Loading...
Need help?
General
