data pin out micom

data pin out micom

Pinout of the 25 pin Accessory Connector (J3):
Pin No. Pin Name Description
1 SPKR- Differential output to the external 8ohm, 8W spkr
2 SPARE
3 SPKR+ Differential output to the external 8ohm, 8W speaker
4 RX AUDIO+ Differential output of received audio signals (0dBm; 600ohm; not controlled by volume)
5 RX AUDIO- Differential output of received audio signals (0dBm; 600ohm; not controlled by volume)
6 TX AUDIO+ Differential input received audio signals (600ohm impedance; -9 to 0dBm is required for full power)
7 TX AUDIO- Differential input audio signals (600ohm impedance; -9 to 0 dBm is required for full power)
8 PTT_IN VOICE Transmission command (by short to ground) for voice signals
9 PTT_IN DATA Transmission command (by short to ground) for data signals
10 PTT_IN CW Transmission command (by short to ground) for CW (Morse) signals
11 SW A+ 13.8V (nominal) current limited
12 KW_C_C KW option channel change
13 KW_ON/OFF KW option power ON/OFF
14 AGC FAST/SLOW AGC fast or slow release
15 RXD Point to point communication line to HOST/HLC
16 TXD Point to point communication line to HOST/HLC
17 RESET External RESET
18 GND Ground
19 KW PTT KW PTT
20 EXT_ALARM External Alarm Operation (open collector - pulled to ground when external alarm is activated)
21 VPP Flash programming voltage
22 KW_ALC KW_ALC
23 SQ_GATE Squelch indication
24 FAN ON/OFF FAN ON/OFF
25 KW TUNE KW t

Pinout of the Programming Cable
RJ-45 Plug / DB-9 Jack
Pin 7- Receive Data    -----   Pin 3- Transmit Data
Pin 6- Transmit Data   -----   Pin 2- Receive Data
Pin 5- Ground          -----   Pin 5- Ground