Icom ic-FR4000 Instruction Manual page 7

ACCESSORY CONNECTOR (continued)
Pin No. Pin Name
15 M/S OUT
16 D0
17 D2
18 D4
19 EXT PTT
20 RSSI
21–24 AGND
25 DC GND
• Pin 4, pin 5, pins 16–18 select one of the 32 pre-programmed memory channels. (see table below)
[0]: Hi-Z, [1]: 0 V (D0–D4: +5 V pull up)
D4 D3
Channel
(pin 18) (pin 5)
1 0 0
2 0 0
3 0 0
4 0 0
5 0 0
6 0 0
7 0 0
8 0 0
9 0 1
10 0 1
11 0 1
12 0 1
13 0 1
14 0 1
15 0 1
16 0 1
Description
Output terminal for master/slave signal.
Input terminal for selecting memory channel.
Input terminal for selecting memory channel.
Input terminal for selecting memory channel.
Input terminal for PTT signal.
Output terminal for RSSI (Received Signal Strength Indica-
tor) signal.
Analog ground
Ground for +15 V DC
D2 D1 D0
(pin 17) (pin 4) (pin16)
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
PANEL DESCRIPTION
Open collector=OFF, 0V=ON
+5 V pull up, Active=L
+5 V pull up, Active=L
+5 V pull up, Active=L
+5 V pull up, Active=L
Output impedance: 1 kΩ (approx.)
D4 D3
Channel
(pin 18) (pin 5)
17 1 0
18 1 0
19 1 0
20 1 0
21 1 0
22 1 0
23 1 0
24 1 0
25 1 1
26 1 1
27 1 1
28 1 1
29 1 1
30 1 1
31 1 1
32 1 1
1
Specification
D2 D1 D0
(pin 17) (pin 4) (pin16)
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
0 0 0
0 0 1
0 1 0
0 1 1
1 0 0
1 0 1
1 1 0
1 1 1
4