Accessory Connector 1 - Motorola Cleartone CM5000 Basic Service Manual

CONNECTOR PIN FUNCTION

Accessory Connector 1

This connector provides communication with External Speaker, External Microphone, External PTT
Switch, External Emergency Switch, Ignition Sense Cable External Alarm Switch, Buzzer and RS-
232C interface using 20-pin type connector.
Table 5. Accessory connector 1 pins
No.
1 External Speaker- output
2 External Microphone input
3 External PTT switch input
4 External Alarm output
5 TX Audio input
6 Keyfail / Flash input
7 Analogue Ground
8 Digital Ground
9 Emergency switch input
10 Ignition switch input
11 RX Audio output
12 Audio PA Enable input
13 SWB+
14 Hook switch input
15 SCI DTR
16 External Speaker+ output
17 SCI CTS
18 SCI RTS
19 SCI RXD
20 SCI TXD
CM5000 Mobile Repeater/Gateway - Basic Service Manual
Function Description
Speaker output (BTL) with Pin 16
Microphone off-hook signal (Active Low)
Ground
Microphone audio input
(-43 dBm@600 ohm with 9 V phantom powered circuit)
PTT switch signal (Active Low)
Ground for analogue input/output
Ground for digital input/output
To enable Emergency transmission with the Radio
turned on (Active Low)
To turn on the Radio with Ignition input (Active high)
Received RX signal output (no volume control)
775 mVRMS@600 ohm
To on/off Speaker input (SP active when High or Open)
Switched power supply (less than 1A)
Hook switch signal (High=Off hook, Low=On hook)
To communicate Personal Computer with 0 - 3.3 V inter-
face(DTR), Input to radio unit
Speaker output (BTL) with Pin 1
To communicate Personal Computer with 0 - 3.3 V interface
(CTS), Output from radio unit
To communicate Personal Computer with 0 - 3.3 V interface
(RTS), Input to radio unit
To communicate Personal Computer with 0 - 3.3 V interface
(RXD), Output from radio unit
To communicate Personal Computer with 0 - 3.3 V interface
(TXD), Input to radio unit
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