3 - 5
3-4 MAIN CPU (IC604) PORT ALLOCATIONS
Pin
No.
Description
IN/
OUT
Condtion
42
Clock signal to 4094/LMX2306 (PLL UNIT).
(DDS for 1st LO PLL-IC/DDS, 2nd TX LO DDS, 3rd TX LO)
O
43
"Serial data to 4094/LMX2306 (PLL UNIT).
(DDS for 1st LO PLL-IC/DDS, 2nd TX LO DDS, 3rd TX LO)
O
44 N/C
O
45 Mode status (1Lo or T2Lo) output.
O
46 Chip select siganl to PLL.
I/O
47 Strobe to the PLL.
O
51 Clock signal to units other than PLL and SCOPE.
O
52 Serial data (other than PLL, SCOPE and DSP).
O
53 N/C
O
54 CI-V format data (UART).
O
55 CI-V format data (UART).
I
56 Clock to the DSP IC.
O
57 Seral data (TXD/RXD) to the DSP.
O
58 START signal to the TUNER UNIT (UART, 9600).
O
142 Serial data to the DAC (BU9480) for ext. S-meter.
O
140 Clock (A-clock) to the DAC (BU9480) for ext. S-meter.
O
138 Clock (B-clock) to the DAC (BU9480) for ext. S-meter.
O
137 Power line for liner circuit control signal.
O
"H"=Power ON
113 Forword wave detected voltage (A/D).
I
114 Refl ected wave detected voltage (A/D).
I
115 ALC fedback voltage (A/D).
I
116 Drain current (fi nal amp.).
I
117 Drain voltage (fi nal amp.).
I
118 PA UNIT temparature.
I
119 Cooling fan motor current.
I
120 Voltage from key pad (rear panel).
I
133 Serial data to the FRONT CPU (UART, 38400).
O
134 Serial data from the FRONT CPU (UART, 38400).
I
135 CW/RTTY keying signal to the DSP.
O
"L"=Key pushed
81 Mute control signal.
I
"H"=Mute
82 TX power line control signal.
O
"L"=TX
83 Noise
pulse.
I
105 RX power line control signal.
O
"L"=RX
3
Serial communication with the scope DDS (AD9857) detect signal.
O
"H"=detected
33 Serial data to the SCOPE UNIT DDS/PLL/DSP.
O
34 Strobe to the scope PLL (LMX2306).
O
59 Chip selet signal to the scope DDS (AD9857).
O
"L"=AD9875 is slected
60 Profi le (0/1) select signal to the scope DDS (AD9857).
O
"H"=Profi le 1 is selected.
61 Clock signal to the DDS/PLL/DSP.
O
121 DSP data (TXD/RXD).
I
122 Hand shake signal from SCOPE DSP.
I
123 Extra port for SCOPE DSP.
I
124 Serial data from SCOPE DSP.
I
125 N/C
I
126 Through signal from the TUNER UNIT.
I
"H"=Through
127 Key input from the tUNER UNIT.
I
"H"=Tuner ON
128 Straight key input (A/D).
I
"L"=Key pushed
