Motorola MTM800 FuG Installation Manual page 102

68015000553-KC
Chapter 5: Connectors and PIN Assignment
NOTICE: Connectors on the Motorcycle Enhanced Control Head, and Remote Enhanced
Control Head are the same. The housings and the cables are different.
Number Description
1 10-Pin Telco Connector
2 25-Pin Back Connector
Table 57: 10-Pin Telco Connector
Pin Function
1 AUDIO +
2 NC
3 BUS +
4 AUDIO -
5 NC
6 GND
7 Radio On/Off
Control
8 SCI_TX
9 FLT_A +
10 Analog Ground
Table 58: 25-Pin Back Connector
Pin Function
1 GPIO_9
2 GPIO_6
3 GPIO_8
4 GPIO_3
5 VBUS_1B
102
Description
Balanced Audio + (Bidirectional)
Not Connected
This is used for communication between the radio and an Enhanced
Control Head.
Balanced Audio - (Bidirectional)
Not Connected
Ground
This is the Enhanced Control Head service request input. A level of 5 V
indicates that the Enhanced Control Head needs to communicate with
the radio. In addition, it switches on the voltage regulators of the radio.
The idle state is a level below 0.6 V.
This if for communication between the radio and the Enhanced Control
Head.
This voltage is at battery voltage level and is available as long as the
radio is connected to the supply voltage. The maximum current is 300
mA. A fuse in the radio prevents further circuit damage in case of short-
ing this pin to ground.
Analog Ground
Description
NGCH GPIO4
External PTT for MIC_REAR_2
NGCH GPIO2 (CPS configurable)
GCAI PIN 2 Mobile Microphone Port, Exter-
nal PTT or MIC_REAR_1, Ground Pin 8 to
activate MIC_REAR_1
GCAI PIN 6: 5 V Supply
Default
Output: Active for dura-
tion of call (car radio
mute). Can be used as
a trigger to a local log-
ger device.
PTT Input, TX audio
from MIC_REAR_2
Disabled
PTT Input, TX audio
from MIC_REAR_1
Disabled
Table continued...
Send Feedback