Motorola MTM5400 Installation Manual page 67

INSTALLATION
Back
Connector Function
Pin
1 GPIO_9
2 GPIO_6
3 GPIO_8
4 GPIO_3
5 VBUS_1B
6 REAR_D -
7 REAR_D +
8 GPIO_0
9 VBUS_2
10
11
12 MIC_REAR_2
13 GND
14 GPIO_5
15 GPI_7
16 1_WIRE
17 HANDSET
18 GND
19 MIC_REAR_1
20 GPIO_4
21 USB_D +
22 USB_D -
23 RTS
24 CTS
25 PWR_ON
MTM5400 Mobile Terminal Installation Manual
Table 15 25-Pin Back Connector
GCAI PIN 6: 5V Supply
GCAI PIN 4: USB D -, GPIO_2
(Shared with the front MMP)
GCAI PIN 8: USB D +, GPIO_1
(Shared with the front MMP)
GCAI PIN 10: GPIO
Second USB 5 V Supply
TX 4-wire RS232 TX
RX 4-wire RS232 RX
Second Rear Microphone
4-Level Analogue Input
GCAI PIN 1: Bi-directional Serial Bus
GCAI PIN 3: Handset Audio Output
GCAI PIN 5: Ground
GCAI PIN 7: Microphone Input
GCAI PIN 9: GPIO
Second USB D +
Second USB D -
4-wire RS232 RTS
4-wire RS232 CTS
Enhanced Control Head Power On
Description
GPIO
GPIO
GPIO
GCAI PIN 2
Ground
GPIO
Input
Default
Output: Active for duration of call (car
radio mute)
PTT Input, TX audio from
MIC_REAR_2
Disabled
PTT Input, TX audio from
MIC_REAR_1
Disabled
Disabled
Disabled
Input: GCAI detection / Select Line
Disabled
Disabled
Disabled
Enabled
Disabled
Parallel to front GCAI
Disabled
Hook Input
67