Connectors And Pin Assignment Of The Radio; Transceiver Rear Side - Pin Function - Motorola MTM5400 Installation Manual

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Connectors and Pin Assignment of the Radio

Transceiver Rear Side - Pin Function

This section gives a description of the Accessory Connector pin functions.
Pin Function
1 UART1_TXD /
USBx_D+
2 UART1_RXD /
USBx_D-
3 UART1_RTS /
USBx_VBUS
4 GND_USBx
5 1-WIRE
6 KEYFAIL / FLASH
7 SWB +
8 GND_MAIN
9 SPEAKER-
10 SPEAKER+
11 TX_AUDIO
12 GND_ANA
13 MIC1 / EXT_MIC
MTM5400 Mobile Terminal Installation Manual
Figure 25 Location of Accessory Connector - Rear Side
The accessory connections shown are not compatible to
some other models of Motorola radios. Check the
appropriate accessory or technical manual for further
information.
Table 9 26-Pin Accessory Connector
1-Wire standard port (pulled via 2K2 to 5V inside U600)
Key load (pulled via 10K to 5V)
Flash input (>10V will trigger Flash mode)
A+ voltage (limited to 14V) with 1A current limitation
Main and power ground
Loudspeaker (PA) output – (NOT TO BE GROUNDED!)
Loudspeaker (PA) output +
TX audio output
Main audio ground
Ext mic input / MIC1 for noise cancelling dual mic input
*Note the location of Pin 1
Description
USB 1.1 – Default Host
RS232 or UART2 – Alternative Setting
INSTALLATION
Accessory Connector
2 26
1 25