Icom IC-FR5100 Series - Accessory Connector Pinout

4-1-3 Connector Description
23
 Accessory connector
Pin No. Pin Name
Description Specification
1NC
No connection
—
2TXD
Output terminal for serial communication data.
—
3RXD
Input terminal for serial communication data.
—
4RTS
Output terminal for request-to-send data.
—
5CTS
Input terminal for clear-to-send data.
—
6NC
No connection
—
7GND
Serial/digital signal ground
—
8MOD IN
Modulator input from an external terminal unit.
Input level: 300 mV rms
9DISC OUT
Output terminal for AF signals from the AF detector circuit.
Output level is fixed, regardless of [AF] control.
Output level: 300 mV rms
10 EXT. D/A
The desired function can be assigned.*
(Default: Null)
—
11 VCC
13.6 V DC output
Output current: Less than 1 A
12 EXT. A/D
Customize A/D input (Not used)
—
13 NC
No connection
—
14 GND
Ground
—
15 EXT.I/O 15
The desired function can be assigned.*
(Default: Null)
+5 V pull up, Active=L
16 EXT.I/O 16
The desired function can be assigned.*
(Default: P0 Monitor Output)
+5 V pull up, Active=L
17 EXT.I/O 17
The desired function can be assigned.*
(Default: Busy Output)
+5 V pull up, Active=L
18 EXT.I/O 18
The desired function can be assigned.*
(Default: Null)
+5 V pull up, Active=L
19 EXT.I/O 19
The desired function can be assigned.*
(Default: EPTT Input)
+5 V pull up, Active=L
20 DATA IN
Input terminal for data.
—
21 EXT.I/O 21
The desired function can be assigned.*
(Default: analogue Audible Output)
+5 V pull up, Active=L
22 AF OUT
The AF detector Output.
—
23 EXT.I/O 23
The desired function can be assigned.*
(Default: Mic Mute Output)
+5 V pull up, Active=L
24 EXT.I/O 24
The desired function can be assigned.*
(Default: Null)
+5 V pull up, Active=L
25 EXT.I/O 25
The desired function can be assigned.*
(Default: Mic Hanger Output)
+5 V pull up, Active=L
* The desired function can be assigned using the optional CS-FR5100 cloning software. Ask your dealer for details.