TM9100 Mobiles: 110 W Mobile Installation Guide
Installing the Radio
19
© Tait Electronics Limited
October 2005
Emergency Switch
The radio allows for connection of an emergency switch to any input line
to enter the emergency mode. If the switch is connected to the AUX GPI2
input line, the radio can also use ‘emergency power sense’ to power up the
radio to enter the emergency mode.
Note
The selected input line must be programmed to ‘Enter Emergency
Mode’ and active to ‘Low’. To use ‘emergency power sense’,
hardware link LK3 must be fitted (factory default), and AUX GPI2
Table 4.2
Auxiliary connector (radio)—pins and signals
Pinout
Pin Signal name
Description
Signal type
12
AUX GPI1
1
1. Used by the 100W RF amplifier
General purpose digital
input. Programmable
function
Digital,
3V3 CMOS.
5
AUX GPI2
4
AUX GPI3
General purpose input
(ignition sense)
3V3 levels.
Protected for
+13.8V.
10
AUX GPIO4
Programmable function and
direction
Pads available to fit a higher
power driver transistor on
GPIO4 line
Digital, 3V3
CMOS input;
open collector
output with
pullup
2
AUX GPIO5
1
9
AUX GPIO6
1
1
AUX GPIO7
1
11
AUX TXD
Asynchronous serial port -
Transmit data
Digital,
3V3 CMOS
3
AUX RXD
Asynchronous serial port -
Receive data
Digital,
3V3 CMOS
7
AUD TAP IN
Programmable tap point into
the Rx or Tx audio chain.
DC-coupled
Analog
13
AUD TAP OUT Programmable tap point out
of the Rx or Tx audio chain.
DC-coupled
Analog
14
AUX MIC AUD Auxiliary microphone input.
Electret microphone biasing
provided. Dynamic
microphones are not
supported
Analog
6
RSSI
Analog RSSI output
Analog
8
+13V8 SW
Switched 13.8V supply.
Supply is switched off when
radio body is switched off
Power
15
AGND
Analog ground
Ground
rear view
J
B
C
D
E
F
G
H
I
1)
1!
1@
1#
1$
1%
