Difference between revisions of "RoIP: URI pin"

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Revision as of 08:21, 11 July 2014

Table 1. Connector Pin Assignments

Pin No. Name Description
1 PTT Push to talk, open collector output to radio transmitter, maximum off state voltage 45V, maximum on state current 0.75 amps
2 GPIO1 General purpose input or output (note 1)
3 GPIO2 General purpose input or output (note 1)
4 GPIO4 General purpose input or output (note 1)
5 GPIO5 General purpose input or output (note 1)
6 GPIO6 General purpose input or output (note 1)
7 CTCSS_DET Input, diode isolated, continuous tone-coded squelch system detect (note 2)
8 COR_DET Input, diode isolated, receive (carrier operated relay) detect (note 2)
9 MIC_IN Direct low-level audio input to CM119, must be AC coupled (note 3)
10 GPIO7 General purpose input or output (note 1)
11 GPIO8 General purpose input or output (note 1)
12 AOUT AC coupled output from 6dB gain amplifier
13 GND Ground
14 +5V 5 volts DC power output from USB bus
15 EEP_CS EEPROM chip select control
16 EEP_CK EEPROM serial clock 17 EEP_DI EEPROM data input
18 EEP_DO EEPROM data output
19 GND Ground
20 GND Ground
21 MIC_AC Audio input, line level, AC coupled
22 LEFT_OUT AC coupled left audio output, 4KHz bandwidth
23 RIGHT_OUT AC coupled right audio output, 4KHz bandwidth
24 AIN AC coupled input to 6dB gain amplifier
25 AVDD 12 volt DC power input required for 6dB gain amplifier