Motorola MTM5400 ユーザーズマニュアル

INSTALLATION

MTM5400 Mobile Terminal Installation Manual

67

Table 15  25-Pin Back Connector

Back 

Connector 

Pin

Function

Description

Default

1

GPIO_9

GPIO

Output: Active for duration of call (car 

radio mute)

2

GPIO_6

GPIO

PTT Input, TX audio from 

MIC_REAR_2

3

GPIO_8

GPIO

Disabled

4

GPIO_3

GCAI PIN 2

PTT Input, TX audio from 

MIC_REAR_1

5

VBUS_1B

GCAI PIN 6: 5V Supply

Disabled

6

REAR_D -

GCAI PIN 4: USB D -, GPIO_2 

(Shared with the front MMP)

Disabled

7

REAR_D +

GCAI PIN 8: USB D +, GPIO_1 

(Shared with the front MMP)

Disabled

8

GPIO_0

GCAI PIN 10: GPIO

Input: GCAI detection / Select Line

9

VBUS_2

Second USB 5 V Supply

Disabled

10

TX

4-wire RS232 TX

11

RX

4-wire RS232 RX

12

MIC_REAR_2

Second Rear Microphone

Disabled

13

GND

Ground

14

GPIO_5

GPIO

Disabled

15

GPI_7

4-Level Analogue Input

Enabled

16

1_WIRE

GCAI PIN 1: Bi-directional Serial Bus

Disabled

17

HANDSET

GCAI PIN 3: Handset Audio Output

Parallel to front GCAI

18

GND

GCAI PIN 5: Ground

19

MIC_REAR_1

GCAI PIN 7: Microphone Input

Disabled

20

GPIO_4

GCAI PIN 9: GPIO

Hook Input

21

USB_D +

Second USB D +

22

USB_D -

Second USB D -

23

RTS

4-wire RS232 RTS

24

CTS

4-wire RS232 CTS

25

PWR_ON

Enhanced Control Head Power On 

Input