Tait TM9100 - Page 21

22 Installing the Radio TM9100 Installation Guide
© Tait Electronics Limited August 2005
Table 2.2 Auxiliary connector (radio)—pins and signals
Pinout Pin Signal name Description Signal type
12 AUX GPI1 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
9 AUX GPIO6
1 AUX GPIO7
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%