25-Pin Subd Connector; Table 47: 25-Pin Subd Connector Pins - Motorola MTM800 FuG Installationshandbuch

PIN Function
8 SCI_TX
9 FLT_A+
10 Analog Ground

25-Pin subD Connector

Data Expansion Head Enhanced:
The radio must be turned ON/OFF via the Ignition Sense Cable PMKN4120_, which has to be connected on Pin 10 of
the Accessory Connector on the rear side of the radio.
Table 47: 25–Pin subD Connector Pins
PIN Function
1 GND
2 RS232_SCI_TX
3 RS232_SCI_RX
4 RS232_RTS
5 RS232_CTS
6 FLT_A+
7 Signal_GND
9 NC
10 NC
11 NC
12 SW_B+
13
14 ON_OFF_CONTROL / FLASH_MODE
15
16 INT_MIC Microphone analogue input of
80mVRMS, 600ohm impedance, 9V=
17
18 NC
Connectors and PIN Assignment | 95
Description
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
Ground
Transceive data (RS232 line with RS232 level)
Receive data (RS232 line with RS232 level)
Request to Send (RS232 line with RS232 level)
Clear to Send (RS232 line with RS232 level)
Filtered unswitched UB+ / 200mA
Ground for RS232
Not Connected
Not Connected
Not Connected
Switched UB +/100mA
• Switch into flash mode (connect pin14 with 6)
• On/Off control for Std. Control Head
Not Connected
Table continued...
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