Motorola MTM800 FuG Installation Manual page 106

68015000553-KC
Chapter 5: Connectors and PIN Assignment
Pin Function
4 GPIO_3
5 VBUS_1B
6 REAR_D -
7 REAR_D +
8 GPIO_0
9 EXT_PWR_12V
10 1_Wire
11 MIC_HF1_GND
12 MIC_HF1
13 GND
14 GPIO_5
15 GPIO_7
16 1_WIRE
17 REAR_AUDIO
18 GND
19 MIC_MMP_REAR
20 GPIO_4
21 SPK +
22 SPK –
106
Description
GCAI PIN 2 GPIO
+5 V Supply,
Connected to Pin 6 of Mobile Microphone Port
Rear handset D+ line
Rear handset D- line
GCAI Pin 10 GPIO
External power supply,
12 V or 24 V for External Speaker
®
1-wire bi-directional serial bus,
Connected to GCAI Pin 1 of Mobile Microphone Port
Ground for external microphone MIC_HF_1
External microphone input (MIC_HF1),
Nominal sensitivity: 80 mV rms, Bias voltage: 9.3 V or 2.1 V (Selec-
ted accessory dependent)
GND Common Ground
Control Head GPIO1 (CPS configured/enabled)
4 Level Analogue Input, 33k to 5.0V PU
1-wire ® bi-directional serial bus,
Dedicated to power-up detection of IMPRES Visor Mic (input
MIC_HF1)
Handset VOL controlled audio output,
Min RL = 150 Ohm unbalanced,
Connected to GCAI Pin 3 Mobile Microphone Port Connector
GND,
Connected to GCAI Pin 5 Mobile Microphone Port
Rear microphone input MIC_MMP_REAR,
Input 80 mV rms, Bias voltage 7.7 V,
Connected to GCAI Pin 7 Mobile Microphone Port
GPIO, Hook Input,
Connected to GCAI Pin 9 Mobile Microphone Port.
Speaker positive line
WARNING: Do not ground!
Speaker negative line
WARNING: Do not ground!
Table continued...
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