Realistic PRO-2004 - Microprocessor Function Table

MICROPROCESSOR (lC-503) PORT FORMAT
Pin No.
Symbol Function
Pin No.
Symbol Function
1
VCC +5 V
33
P57 LCD Busy
2
P67
VCO filter 2 Output
34
P56 Low battery Input
3
P66
VCO filter 1 Output
35
P55 Carrier Squelch Input
4
P67 Memory CE Output
36
P54
Key Input
5
P64 Memory R/W Output 37 P53
Key Input
6
P63 Memory OE Output 38
P52 Key Input
7 P62
Memory address 10 (A10) 39 P51
Key Input
8
P61
Memory address 9 (A9)
40
P50
USA/etc., Cellular Switch
9
P60
Memory address 8 (A8)
41
P17 WFM Output
10 P47 Search Output
42
P16 NFM Output
11 P46 NC
43
P15 AM Output
12
P45 Mute Output 44 P14 RF filter Switch
13
P44
LCD Reset Output 45 P13 RF filter Switch
14
P43 LCD C/O Output 46 012 RF filter Switch
15 P42 LC 0 CS Output 47 P11
VCO 2 Output
16
P41
PLL 2 Latch Output
48
Pl0
VCO 1 Output
17 P40 PLL 1 Latch Output
49
P07 Memory a~dress 7 (A7)
18 P37/SRDY 5 kHz Step Output
50 P06
Memory address 6 (A6)
19 P36/CLK Serial Clock Output
51 P05
Memory address 5 (A5)
20 P35/TxD Serial Data Output
52
P04
Memory address 4 (A4)
21 P34/RxD NC
53 P03
Memory address 3 (A3)
22 P33/CNTR
Peep Output
54 P02
Memory address 2 (A2)
23
P32/INT2 Hold Input
55 POl
Memory address 1 (A1)
24
P31
Sound Squelch Input
56 POO
Memory address 0 (AO)
25
P30
NC 57 P27 Memory I/O 8
26
INTl +5 V
58 P26
Memory I/O 7
27
CNVSS
GND
59
P25 Memory I/O 6
28
RESET
Reset Input
60
P24 Memory I/O 5
29
XIN
Clock Input
61 P23
Memory I/O 4
30
XOUT
Clock Output
62
P22 Memory I/O 3
31
<P
Timing Output
63
P21 Memory I/O 2
32
VSS
OV
64
P20
Memory I/O 1
MICROPROCESSOR (lC-503) FUNCTION TABLE
(1) Outputs of veo (P10, P11) and veo filter (P66, P67)
Receiving
VCO
Output
VCO filter
Frequency (MHz)
Output
25.0000
to
VCO 1 (Pl0)
VCO filter
220.4950
"H"
1 (P66)
220.5000 to
VCO 2 (Pll)
"H" Level
520.0000
"H"
760.0000 to
VCO 1 (Pl0)
1052.4950
"H"
VCO filter
2 (P67)
1052.5000 to
VCO 2 (Pl1)
"H" Level
1300.0000
"H"
(3) Outputs of Search (P47) and 5 kHz Step (P37)
(2) Outputs of RF filter (P12, P13, P14)
Receiving Frequency (MHz)
P12
P13 P14
25.0000 to
39.9950
H L
L
40.0000 to
67.9950 L
H
L
68.0000
to
107.9950
H
H L
108.0000
to
173.9950 L
L
H
174.0000
to 279.9950 ;i
L
H
280.0000
to 520.0000
L
H
H
760.0000
to 1300.0000
H
H
H
Search Output (P47)
5 kHz Step
Output (P37)
MANUAL Operation
H L
PROGRAM Operation H L
SCAN Operation
H L
Receiving Frequency
at 5 kHz
Step
L
H
In SEARCH
25
to 520 MHz
at Other Step
L
L
Operation
Receiving Frequency
at 5 kHz
Step
L
H
760
to 1300 MHz
at Other Step
L
L