Table 53: 10-Pin Telco Connector; Table 54: 25-Pin Back Connector - Motorola MTM800 FuG Installationshandbuch

102 | Connectors and PIN Assignment
Note: Connectors on the Motorcycle Enhanced Control Head, and Remote Enhanced Control Head are the
same. The housings and the cables are different.
Number
1
2
Table 53: 10–PIN Telco Connector
Telco Connector Pin
1
2
3
4
5
6
7
8
9
10
Table 54: 25–PIN Back Connector
Back Connector Pin
1
2
3
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Function
AUDIO +
NC
BUS +
AUDIO -
NC
GND
Radio On/Off Control
SCI_TX
FLT_A +
Analog Ground
Function
GPIO_9
GPIO_6
GPIO_8
Description
10-Pin Telco Connector
25-Pin Back Connector
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 volts
indicates that the Enhanced Control Head
needs to communicate with the radio. In
addition it switches on the radio's voltage
regulators. The idle state is a level below
0.6V.
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 300mA. A fuse in
the radio prevents further circuit damage
in case of shorting this pin to ground.
Analog Ground
Description
NGCH GPIO4
External PTT for
MIC_REAR_2
NGCH GPIO2 (CPS
configurable)
Default
Output: Active for duration
of call (car radio mute).
Can be used as a trigger to
a local logger device.
PTT Input, TX audio from
MIC_REAR_2
Disabled
Table continued...