Motorola Crib Toy MTM5400 Manual Do Utilizador

INSTALLATION

MTM5400 Mobile Terminal Installation Manual

59

14

RX_AUDIO

RX audio output

15

MIC2

MIC2 for noise cancelling dual mic input

16

GND_MIC

Ground (for MIC)

17

EXTERNAL_PTT

PTT input (pulled via 4K7 to 5V)

18

UART2_DTR / 
USBy_ID

RS232 or UART1 / UART2 DTR / 2nd USB2.0 (OTG) ID

19

HOOK_PA_EN

HOOK_PA_EN input (or programmable 5V GPIO)

20

UART2_TXD / 
USBy_TX

RS232 or UART2 TXD / 2nd USB2.0 (OTG) D+ 

21

UART2_RTS / 
USBy_VBUS

RS232 or UART2 RTS / 2nd USB2.0 (OTG) VBUS – 100mA

22

UART2_RXD / 
USBy_RX

RS232 or UART2 RXD / 2nd USB2.0 (OTG) D-

23

EMERGENCY

Emergency Input (Pulled via 24K9 to A+) – Pull low to power on

24

UART_CTS

RS232 or UART1 / UART2 CTS input

25

IGNITION

Ignition input (through series 15K) – Pull > 5V to power on

26

EXTERNAL ALARM

External Alarm input (Pulled via 4K7 to A+) 

PIN 25: If the ignition line is not used, it needs to be 
grounded for example connected to pin 8. Interference can 
cause radio to hang.

Table 9  26-Pin Accessory Connector

Pin

Function

Description