Internal Options Connector; Provision For External Options Connector - Tait TM9100 Service Manual

2.3.4

Internal Options Connector

When installing an internal options board, the internal options connector is
the electrical interface to the main board of the radio body.
The internal options connector provides similar I/O to the auxiliary
connector. The internal options connector is an 18-pin 0.1 inch pitch
Micro-MaTch connector.
Important
Table 2.4 Internal options connector – pins and signals
Pinout
B
C
D
E
F
G
H
I
J
1)
1!
1@
1#
1$
1%
1^
1&
1*
top view
9...15 IOP_GPIO1...7
a. Can be switched or unswitched. For more information refer to
b. For more information on hardware links refer
2.3.5

Provision for External Options Connector

The radio has a mechanical interface for the external connector of an
internal options board. This external options connector can be a 9-way
standard-density or 15-way high-density D-range connector. If no internal
options board is installed (standard configuration), the hole for the external
options connector is sealed by a bung.
TM9100 Service Manual
© Tait Electronics Limited August 2005
The digital I/O signals are intended to interface directly
with compatible logic signals only. Do not connect these
signals to external devices without appropriate signal con-
ditioning and ESD protection.
Pin Signal Description
a
1 13V8_SW Switched 13V8 supply. Supply is switched
off when the Radio Body is switched off.
2 AUD_TAP_OUT Programmable tap point out of the Rx or
Tx audio chain. DC-coupled.
3 AGND Analog ground.
4 AUX_MIC_AUD Auxiliary microphone input.
Electret microphone biasing provided.
Dynamic microphones are not supported.
5 RX_BEEP_IN Receive sidetone input. AC-coupled.
6 AUD_TAP_IN Programmable tap point into the Rx or Tx
audio chain. DC-coupled.
7 RX_AUD Receive audio output. Post volume
control. AC-coupled.
8 RSSI Analog RSSI output.
General-purpose port for input and
output of data. Programmable function
and direction. With LK4 fitted, GPIO7 is a
power sense input
16 DGND Digital ground.
17 IOP_RXD Asynchronous serial port - Receive data.
18 IOP_TXD Asynchronous serial port - Transmit data.
to"Power-Sense Options" on page
b
.
"Connector Power Supply Options" on page
82.
Signal type
Power
Analog
Ground
Analog
Analog
Analog
Analog
Analog
Digital.
3V3 CMOS
Ground
Digital.
3V3 CMOS
Digital.
3V3 CMOS
85.
Description 39